CN107168905B - File display method and device, storage medium and mobile terminal - Google Patents

File display method and device, storage medium and mobile terminal Download PDF

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Publication number
CN107168905B
CN107168905B CN201710329994.5A CN201710329994A CN107168905B CN 107168905 B CN107168905 B CN 107168905B CN 201710329994 A CN201710329994 A CN 201710329994A CN 107168905 B CN107168905 B CN 107168905B
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mtp
file
directory structure
initiating
folder
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CN107168905A (en
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闫森
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/382—Information transfer, e.g. on bus using universal interface adapter
    • G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
    • G06F13/4265—Bus transfer protocol, e.g. handshake; Synchronisation on a point to point bus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/10—File systems; File servers
    • G06F16/16—File or folder operations, e.g. details of user interfaces specifically adapted to file systems
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/10—File systems; File servers
    • G06F16/17—Details of further file system functions
    • G06F16/178—Techniques for file synchronisation in file systems

Abstract

The embodiment of the invention discloses a file display method, a file display device, a storage medium and a mobile terminal. The method comprises the following steps: receiving a first message sent by an MTP (multiple time protocol) initiating terminal, feeding back an access interface of a preset virtual directory structure to the MTP initiating terminal, and feeding back folder information in the preset virtual directory structure to the MTP initiating terminal when receiving an access request aiming at the preset virtual directory structure sent by the MTP initiating terminal so that the MTP initiating terminal displays a corresponding folder; when receiving an access request of the MTP initiating terminal for the displayed target folder, acquiring a file handle of a file corresponding to the target folder, and feeding back the acquired file handle to the MTP initiating terminal so as to enable the MTP initiating terminal to display the corresponding file. By adopting the technical scheme, the file access and display efficiency can be improved.

Description

File display method and device, storage medium and mobile terminal
Technical Field
The embodiment of the invention relates to the technical field of computers, in particular to a file display method, a file display device, a storage medium and a mobile terminal.
Background
In order to facilitate viewing and managing files on a mobile terminal, many users typically connect the mobile terminal to a terminal such as a Personal Computer (PC) and perform related operations on the PC.
Currently, the Media Transfer Protocol (MTP) is the most common Media file Transfer Protocol at present, and is proposed by microsoft corporation, and an electronic device supporting the MTP Protocol can perform Media file Transfer based on an interface provided by the MTP Protocol. The application of MTP is divided into two roles, one is used as an Initiator, such as a PC or a notebook; and the other is used as a Responder, such as a mobile phone or a digital camera. When the electronic device communicates through the MTP, folders and files in each storage directory in the response can be displayed on the screen of the Initiator. However, the storage space of the current mobile terminal is getting larger, the used memory is gradually developed from 4G several years ago to 256G or even larger, the storage space is calculated as T in the near future due to the development of moore's law, and the storage quantity of files is huge, so that the current file display strategy based on MTP is difficult to adapt.
Disclosure of Invention
The embodiment of the invention provides a file display method, a file display device, a storage medium and a mobile terminal, which can solve the problem of optimizing the existing file display scheme based on MTP.
In a first aspect, an embodiment of the present invention provides a file display method, including:
receiving a first message sent by a MTP (media transfer protocol) initiating terminal;
feeding back an access interface of a preset virtual directory structure of an MTP response end to the MTP initiating end according to the first message, wherein the preset virtual directory structure comprises folders with preset classifications;
when receiving an access request aiming at the preset virtual directory structure sent by the MTP initiating terminal, feeding back folder information in the preset virtual directory structure to the MTP initiating terminal so that the MTP initiating terminal displays a corresponding folder;
when receiving an access request of the MTP initiating terminal for the displayed target folder, acquiring a file handle of a file corresponding to the target folder, and feeding back the acquired file handle to the MTP initiating terminal, so that the MTP initiating terminal displays the corresponding file.
In a second aspect, an embodiment of the present invention provides a file display apparatus, including:
the message receiving module is used for receiving a first message sent by a MTP (media transfer protocol) initiating terminal;
an access interface feedback module, configured to feed back an access interface of a preset virtual directory structure of the MTP response end to the MTP initiation end according to the first message, where the preset virtual directory structure includes folders of preset classifications;
the folder information feedback module is used for feeding back the folder information in the preset virtual directory structure to the MTP initiating terminal when receiving an access request aiming at the preset virtual directory structure and sent by the MTP initiating terminal, so that the MTP initiating terminal displays the corresponding folder;
and the file handle feedback module is used for acquiring the file handle of the file corresponding to the target folder when receiving an access request of the MTP initiating terminal for the displayed target folder, and feeding back the acquired file handle to the MTP initiating terminal so as to enable the MTP initiating terminal to display the corresponding file.
In a third aspect, a computer-readable storage medium has a computer program stored thereon, where the computer program is used to implement a file display method provided by an embodiment of the present invention when the computer program is executed by a processor.
In a fourth aspect, an embodiment of the present invention provides a mobile terminal, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor executes the computer program to implement the file display method provided in the embodiment of the present invention.
According to the file display scheme provided by the embodiment of the invention, when a first message sent by an MTP initiating terminal is received, an access interface of a preset virtual directory structure containing preset classified folders of the MTP responding terminal is fed back, and when an access request aiming at the preset virtual directory structure sent by the MTP initiating terminal is received, corresponding folder information is fed back to the MTP initiating terminal so that the MTP initiating terminal displays the corresponding folders. By adopting the technical scheme, a quick access interface of the preset classified folders can be provided for the user, the user can conveniently and quickly access the interested classified files, and the file access and display efficiency is improved.
Drawings
Fig. 1 is a schematic flowchart of a file display method according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an MTP protocol stack according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an MTP command processing flow according to an embodiment of the present invention;
fig. 4 is a schematic flowchart of a file display method according to an embodiment of the present invention;
FIG. 5 is a block diagram of a file display apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the steps as a sequential process, many of the steps can be performed in parallel, concurrently or simultaneously. In addition, the order of the steps may be rearranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figure. The processes may correspond to methods, functions, procedures, subroutines, and the like.
Fig. 1 is a flowchart illustrating a file display method according to an embodiment of the present invention, where the method may be executed by a file display apparatus, where the apparatus may be implemented by software and/or hardware, and may be generally integrated in a mobile terminal. As shown in fig. 1, the method includes:
step 101, receiving a first message sent by an MTP initiating terminal.
For example, the mobile terminal in this embodiment may specifically be a mobile phone, a smart watch, a tablet computer, a game machine, a personal digital assistant, a digital multimedia player, and the like.
The application of MTP is divided into two roles, one is used as an Initiator; and the other as the Responder. The initiator and the responder are usually connected via a Universal Serial Bus (USB). The initiating terminal generally refers to a USB Host (Host), such as a PC or a notebook computer; the answering end can be a mobile terminal in the embodiment of the invention. The MTP protocol specifies that all MTP operations are initiated by the initiator, and the role of the Responder in MTP includes handling initiator-initiated requests, while it also sends events to notify the initiator based on changes in its status.
For example, the first message may be a message that is newly added according to actual requirements and is used for displaying the preset virtual directory structure access interface according to the embodiment of the present invention, or may be an original message in the MTP. It should be noted that, when the first message is the original message in the MTP, the original response policy of the MTP answering end may be changed to implement the subsequent steps of the embodiment of the present invention.
And step 102, feeding back an access interface of a preset virtual directory structure of the MTP response end to the MTP initiating end according to the first message.
And the preset virtual directory structure comprises folders with preset classifications.
For example, the preset classification can be set by default of the system, and can also be set by the user according to personal needs. For example, before receiving the first message sent by the MTP originating terminal, the method may further include: and changing a preset virtual directory structure according to the setting operation of a user, wherein the setting operation comprises increasing, decreasing or modifying preset classified folders contained in the preset virtual directory structure.
Optionally, the preset classification may include a classification that images, videos, audios, documents, installation packages, compression packages, and the like are distinguished by storage types; the system also can comprise classification of WeChat transceiving files, QQ transceiving files, mailing transceiving files and the like for distinguishing actual storage directories in the MTP response end; classifications that distinguish by file attributes, such as recent changes, recent accesses, and file sizes may also be included. The preset classification may also include other classifications, which are not limited in the embodiments of the present invention. It will be appreciated that the files corresponding to folders of different predetermined categories may be repeated, for example, picture a may correspond to both the picture folder and the WeChat Transmit folder, and may also correspond to the most recently changed folder. Furthermore, several categories may be combined, such as recently accessed pictures.
Illustratively, the access interface may be an interface in the form of a drive letter, an interface in the form of a folder, or an interface in the form of an icon. The access request to the preset virtual directory structure corresponding to the access interface can be initiated through a preset operation (such as an operation in the form of clicking, long pressing or double clicking) acting on the access interface.
Preferably, after receiving the first message sent by the MTP originating terminal, the MTP originating terminal may further include an access interface for feeding back the storage directory structure of the MTP answering terminal to the MTP originating terminal according to the first message. The storage directory structure may be understood as an actual storage directory structure, and in the MTP reply end, a file usually has its own storage logic, and all files are stored according to the storage logic. For example, most of files in Android mobile phones are stored in units of application programs, and files related to the same application program are usually stored in a file directory corresponding to the application program. The embodiment of the invention has the advantages that the preset virtual directory structure usually comprises folders which are commonly used or interested by the user, generally does not cover all files, and besides the access interface for the preset virtual directory structure, the access interface for storing the directory structure is also provided, so that a comprehensive file access way can be provided for the user, and the user can be ensured to view all the files.
Further, the first message is a drive letter acquisition command. The method for feeding back the access interface of the preset virtual directory structure of the MTP response end to the MTP initiating end according to the first message comprises the following steps: and feeding back the first drive letter of the preset virtual directory structure of the MTP response end to the MTP initiating end according to the drive letter acquisition command. The access interface for feeding back the storage directory structure of the MTP response end to the MTP originating end according to the first message includes: and feeding back a second drive letter of a storage directory structure of the MTP response end to the MTP initiating end according to the drive letter acquisition command, wherein the second drive letter is different from the first drive letter. The optimization has the advantage that the access interfaces are distinguished by the drive letter, so that the user can conveniently and quickly find different access interfaces. Preferably, the name of the first drive letter can be "quick access", "quick presentation" or "common file", and the like, so as to provide simple and clear prompt for the user.
Preferably, the access right of the first drive letter is read only, and the remaining space is 0. The method has the advantages that the user is prevented from operating the files in the first disk character to influence the original storage directory structure of the MTP response end, and the stability and the safety of file storage in the MTP response end are guaranteed.
Step 103, when receiving an access request for the preset virtual directory structure sent by the MTP originating terminal, feeding back folder information in the preset virtual directory structure to the MTP originating terminal, so that the MTP originating terminal displays a corresponding folder.
Illustratively, the folder information may be a folder name or a folder handle. The folder information may be packaged in a data packet (Package), and the data packet containing the folder information is fed back to the MTP initiator, and the MTP initiator analyzes the data packet and displays the folder corresponding to the folder information. For example, if the folder information in the preset virtual directory structure includes a picture, a video, an audio, a document, an installation package, a compression package, a wechat file, a QQ file, a mailer file, and a recent change, the folders may be simultaneously displayed on the screen of the MTP initiator.
And 104, when receiving an access request of the MTP initiating terminal for the displayed target folder, acquiring a file handle of a file corresponding to the target folder, and feeding back the acquired file handle to the MTP initiating terminal so that the MTP initiating terminal displays the corresponding file.
Illustratively, the access request for the file corresponding to the target folder can be initiated through a preset operation (e.g., an operation in the form of clicking, long-pressing or double-clicking) acting on the target folder. For example, when a user double-clicks a picture folder, the MTP initiating terminal sends an access request to the MTP responding terminal for the picture folder, and the MTP responding terminal obtains file handles of all picture files and feeds the file handles back to the MTP initiating terminal, so that all picture files can be displayed on a screen of the MTP initiating terminal.
The file display method provided in the embodiment of the invention feeds back the access interface of the MTP response end, which contains the preset virtual directory structure of the preset classified folder, when receiving the first message sent by the MTP initiating end, and feeds back the corresponding folder information to the MTP initiating end when receiving the access request aiming at the preset virtual directory structure sent by the MTP initiating end, so that the MTP initiating end displays the corresponding folder. By adopting the technical scheme, a quick access interface of the preset classified folders can be provided for the user, the user can conveniently and quickly access the interested classified files, and the file access and display efficiency is improved.
On the basis of the above embodiment, when receiving an access request of the MTP originating terminal for the displayed target folder, obtaining a file handle of a file corresponding to the target folder, and feeding back the obtained file handle to the MTP originating terminal, so that the MTP originating terminal may display the corresponding file including any one or more of the following:
1. when receiving an access request of the MTP initiating terminal for the displayed first folder, acquiring a file type corresponding to the first folder; searching the files matched with the file types in the storage directory structure of the MTP response end, and feeding back the file handles corresponding to the searched files to the MTP initiating end so as to enable the MTP initiating end to display the corresponding files. The file types may include pictures, video, audio, documents, installation packages, compression packages, and the like. Illustratively, taking the file type as an example of a picture, the search can be performed in the storage directory structure by the extension of the picture file (e.g.,. jpg,. bmp,. gif,. jpeg, and. tiff, etc.).
2. When receiving an access request of the MTP initiating terminal for the displayed second folder, acquiring a corresponding storage path of the second folder in a storage directory structure of the MTP responding terminal; and acquiring a file handle of the file contained in the storage path, and feeding back the acquired file handle to the MTP initiating terminal so that the MTP initiating terminal displays the corresponding file. Taking a wechat transceiving file as an example, such a file is usually stored in a directory corresponding to a wechat application program, but a situation of folder nesting often exists, so that a user is very troublesome to search for the wechat transceiving file in a storage directory structure, often needs to open a plurality of folders or a plurality of layers of folders to find the wechat transceiving file, and is time-consuming and labor-consuming.
3. When an access request of the MTP initiating terminal for the displayed third folder is received, acquiring a preset range of file attributes corresponding to the third folder, wherein the file attributes comprise modification time, access time or file size; searching the files matched with the preset range in the storage directory structure of the MTP response end, and feeding back the file handle corresponding to the searched files to the MTP initiating end so that the MTP initiating end displays the corresponding files. The preset range may be a range of the number of files, a range of the start and end of time, a range of the size of the file, and the like. For example, the range of the number of files is 10, and when the file attribute is modification time, the most recently modified 10 files may be displayed. If the starting and ending range of time is within 24 hours and the file attribute is access time, the files accessed within the last 24 hours can be displayed. If the numerical range of the file size is more than 500M and the file attribute is the file size, all files with the capacity size of more than 500M can be displayed, and a user can conveniently and intensively view files occupying more storage space.
The specific modes for displaying the three different types of folders are provided, and the mode for acquiring the file handle can be selected according to respective characteristics, so that the aim of displaying files corresponding to the different types of folders is fulfilled.
In order to enhance the understanding of the embodiments of the present invention, the following further description will take the MTP initiating terminal as a PC and the MTP responding terminal as a smart phone. The smart phone can be a mobile phone loaded with an Android operating system.
First, an MTP protocol stack is introduced, and fig. 2 is a schematic diagram of an MTP protocol stack provided in an embodiment of the present invention, where the MTP protocol stack includes, from bottom to top, a physical layer, a transport layer, and a command layer.
Pyshical Layer (physical Layer): the physical layer is used in the MTP protocol to transfer data. Currently, there are three physical layers available for MTP. They are USB, Internet Protocol (IP) and Bluetooth (BT), respectively. The USB has the main characteristics that the speed is high when files are transmitted and media files are synchronized, and the USB can work and charge at the same time, which is the most mode used at present; the MTP (MTP/IP for short) based on IP can match and discover the equipment through UPnP, which is an ideal transmission mode in the home network; bluetooth, i.e. MTP/BT, is a relatively power-saving, but at the same time, it is also the slowest transmission mode and is applied less frequently. Therefore, the embodiment of the invention preferably adopts a USB mode.
A transmission layer: in MTP, the data transfer format conforms to the Picture Transfer Protocol (PTP) (USB Still Image Class, which describes the USB static Image capturing behavior).
A command layer: various commands in the MTP protocol are implemented, and specific reference may be made to the relevant description in MTP Spec.
The MTP works in a command-response mode (an initiator sends a command to a Responder for processing, and the Responder feeds back a processing result), and the mode has the main characteristics that: all MTP commands are delivered in a Package across the device. The Initiator must receive the result of the previous message processing (either successful or timeout) before sending the next message.
Taking an example that a PC opens a file through MTP, fig. 3 is a schematic diagram of an MTP command processing flow provided in the embodiment of the present invention, where the default MTP command processing flow is: after MTP of the mobile phone terminal is started, MtpServer in MtpServer. cpp, run () can continuously read a message sent by PC from "/dev/MTP _ usb" through read (). After reading the message from the PC, read () is handed to MtpServer:: handleRequest () for processing. The processing is performed according to the ID of the message of 'PC reads the file content', and the common ID comprises the following steps:
MTP_OPERATION_GET_DEVICE_INFO
MTP_OPERATION_OPEN_SESSION
MTP_OPERATION_CLOSE_SESSION
MTP_OPERATION_GET_STORAGE_IDS
MTP_OPERATION_GET_STORAGE_INFO
MTP_OPERATION_GET_NUM_OBJECTS
MTP_OPERATION_GET_OBJECT_HANDLES
MTP_OPERATION_GET_OBJECT_INFO
MTP_OPERATION_GET_OBJECT
in the open file flow, the ID of the message "PC reads file content" in fig. 3 is MTP _ OPERATION _ GET _ OBJECT; therefore, it will be processed by doGetObject (), which will call getObjectFilePath (), which will look up the corresponding file from the MediaProvider's database mtpdatabase.
The following is a brief introduction to the interaction between a PC and a mobile phone:
(1) when the mobile phone is connected to the PC for the first time, the Initiator (i.e., the PC) first sends a request named GetDeviceInfo to obtain information of the mobile phone, where the information includes the degree of PTP version Supported by the mobile phone, which is expressed by percentage (default is 100), MTP command Supported (Operation Supported), Event type Supported, and the like.
(2) The PC sends an OpenSession command to create a session that remains until the handset is disconnected from the PC. All commands (except the GetDeviceInfo command) must then be sent during the lifetime of this session. The session is identified in the MTP protocol by the SessionID, which is a 32-bit unsigned integer selected by the PC and passed to the handset.
(3) The PC side needs to return the storage id corresponding to a certain drive letter through the getstorage ids command. In MTP, the StorageID is a 32-bit unsigned integer, each representing a logical drive letter. The PC side can use GetStorageInfo operation to obtain the information of the storage device, such as the remaining storage space, the file system type and the access right, according to the StorageID number of the previous step.
(4) The PC obtains the handles ObjectHandles of the files and subdirectories under this drive via the GetObjectHandles command (an Object Handle represents a file or directory.
(5) The PC transfers file information (such as a file name and a file size) and the like to the mobile phone through the SendObjectInfo command. The handset needs to check whether the target directory has sufficient space and corresponding permissions. If everything is normal, the PC will pass data to the handset by SendObject. It is the response in the handset that really writes the file to the device memory space.
(6) After the transmission of the media file is finished, the mobile phone updates the information into the media database.
In the embodiment of the invention, in order to realize the purpose of quick browsing, improvement is mainly carried out on a command layer.
For the above-mentioned (3), when the mobile phone receives MTP _ OPERATION _ GET _ NUM _ obsetcs, and the mobile phone performs processing, adding one to the total number of Storage in the current mobile phone, that is, returning one more Storage for quick display. That is, the original Storage corresponding to the drive letter of the mobile phone is the second drive letter (the number is not limited) described in the embodiment of the present invention, and the Storage corresponding to the fast display is the first drive letter (generally 1) described in the embodiment of the present invention.
When the mobile phone receives MTP _ OPERATION _ GET _ STORAGE _ IDS and MTP _ OPERATION _ GET _ STORAGE _ INFO, the mobile phone analyzes, and if the PC terminal wants to access the id (namely the first drive symbol) of the STORAGE displayed quickly, returns the information of the virtual STORAGE displayed quickly: the access authority is read-only, the residual space is 0, and the name is 'quick access' or 'common file' and the like which indicate the storage name of quick display.
For the above (4), when the mobile phone receives the access request MTP _ OPERATION _ GET _ OBJECT, the id of the Storage that is quickly displayed is accessed in the current session, and if the id is the root directory of the access (i.e. the access for the first identifier), the current virtual directory structure is returned: pictures, videos, documents, audio, installation packages, compression packages, newly changed files, WeChat Transceiver files, QQ Transceiver files, and mailer files. The virtual directory structure supports user editing, and a user can increase the directory name and the corresponding file type or directory, the latest changed file, and support the user to modify the display number.
When the mobile phone receives an access request MTP _ OPERATION _ GET _ OBJECT _ HANDLES, the current session accesses the id of the Storage which is rapidly displayed, if the accessed directory is a picture, all pictures are searched in a media library of the mobile phone, and the handle of the searched result is fed back to the PC. If the accessed video, document, audio, installation package and compression package are accessed, the corresponding database is changed to search the keywords.
When the mobile phone receives an access request MTP _ OPERATION _ GET _ OBJECT _ HANDLES, the current session access is the id of the Storage which is rapidly displayed, and if the accessed directory is a WeChat transceiving file, a QQ transceiving file, a mail transceiving file and the like, the handle of the corresponding actual file directory is fed back to the PC.
When the mobile phone receives an access request MTP _ OPERATION _ GET _ OBJECT _ HANDLES, the id of the Storage which is rapidly displayed is accessed in the current session, if the accessed directory is the document which is changed recently, the recently modified file is searched in the media library of the mobile phone according to the display number set by the user, and the handle of the searched result is fed back to the PC.
Fig. 4 is a flowchart illustrating a file display method according to an embodiment of the present invention, and fig. 4 illustrates an interaction process between an MTP initiating terminal and an MTP responding terminal according to an embodiment of the present invention.
Step 401, after detecting that the MTP initiating terminal establishes connection with the MTP responding terminal, the MTP initiating terminal sends a device information acquisition request to the MTP responding terminal.
Step 402, the MTP answering end feeds back the device information to the MTP initiating end.
Step 403, the MTP originating terminal creates a session and sends a drive letter acquisition command to the MTP answering terminal.
Step 404, the MTP answering end feeds back the first drive letter of the preset virtual directory structure and the second drive letter of the storage directory structure to the MTP initiating end.
Step 405, the MTP initiating terminal displays the first drive letter and the second drive letter on the screen, and sends a first access request for the preset virtual directory structure to the MTP responding terminal when detecting that the user double-clicks the first drive letter.
It should be noted that the user can also access the files or folders therein by double-clicking the second drive. The embodiment of the present invention takes a double click as an example, but is not limited to the double click, and other ways are also possible.
And step 406, the MTP response end feeds back the folder information in the preset virtual directory structure to the MTP initiating end according to the first access request.
Step 407, the MTP initiating terminal displays all folders corresponding to the preset virtual directory structure according to the folder information, and sends a second access request for the target folder to the MTP responding terminal when detecting that the user double-clicks the target folder.
And step 408, the MTP response end acquires the corresponding file handle according to the second access request and feeds back the file handle to the MTP initiation end.
And step 409, the MTP initiating terminal displays the corresponding file according to the received file handle.
It can be seen from the above contents that, in the embodiment of the present invention, folders and files in a preset virtual directory structure can be displayed by adding a drive letter displayed at an MTP initiating terminal, so that a more friendly display is provided, a user can quickly find the files, file access efficiency is improved, and an original storage directory structure is not affected.
Fig. 5 is a block diagram of a file display apparatus according to an embodiment of the present invention, where the apparatus may be implemented by software and/or hardware, and is generally integrated in a mobile terminal, and may perform file display by executing a file display method. As shown in fig. 5, the apparatus includes:
a message receiving module 501, configured to receive a first message sent by an MTP originating end;
an access interface feedback module 502, configured to feed back an access interface of a preset virtual directory structure of the MTP response end to the MTP initiating end according to the first message, where the preset virtual directory structure includes folders of preset classifications;
a folder information feedback module 503, configured to feed back, to the MTP originating terminal, folder information in the preset virtual directory structure when receiving an access request for the preset virtual directory structure sent by the MTP originating terminal, so that the MTP originating terminal displays a corresponding folder;
a file handle feedback module 504, configured to, when receiving an access request from the MTP originating terminal for a displayed target folder, obtain a file handle of a file corresponding to the target folder, and feed back the obtained file handle to the MTP originating terminal, so that the MTP originating terminal displays the corresponding file.
The file display device provided by the embodiment of the invention can provide a quick access interface for the preset classified folders for the user, so that the user can conveniently and quickly access the interested classified files, and the file access and display efficiency is improved.
Optionally, the access interface feedback module is further configured to, after receiving a first message sent by the MTP initiating terminal, feed back an access interface of the storage directory structure of the MTP responding terminal to the MTP initiating terminal according to the first message.
Optionally, the first message is a drive letter acquisition command;
the access interface feedback module is specifically configured to: feeding back a first drive letter of a preset virtual directory structure of an MTP response end to the MTP initiating end according to the drive letter acquisition command; and feeding back a second drive letter of a storage directory structure of the MTP response end to the MTP initiating end according to the drive letter acquisition command, wherein the second drive letter is different from the first drive letter.
Optionally, the file handle feedback module is configured to:
when receiving an access request of the MTP initiating terminal for the displayed first folder, acquiring a file type corresponding to the first folder; searching a file matched with the file type in a storage directory structure of the MTP response end, and feeding back a file handle corresponding to the searched file to the MTP initiating end so that the MTP initiating end displays the corresponding file; or the like, or, alternatively,
when receiving an access request of the MTP initiating terminal for the displayed second folder, acquiring a corresponding storage path of the second folder in a storage directory structure of the MTP responding terminal; acquiring a file handle of a file contained in the storage path, and feeding back the acquired file handle to the MTP initiating terminal to enable the MTP initiating terminal to display the corresponding file; or the like, or, alternatively,
when an access request of the MTP initiating terminal for the displayed third folder is received, acquiring a preset range of file attributes corresponding to the third folder, wherein the file attributes comprise modification time, access time or file size; searching the files matched with the preset range in the storage directory structure of the MTP response end, and feeding back the file handle corresponding to the searched files to the MTP initiating end so that the MTP initiating end displays the corresponding files.
Optionally, the apparatus further comprises:
the structure changing module is used for changing a preset virtual directory structure according to the setting operation of a user before receiving a first message sent by an MTP (multiple time transfer protocol) initiating terminal, wherein the setting operation comprises increasing, decreasing or modifying preset classified folders contained in the preset virtual directory structure.
Embodiments of the present invention also provide a storage medium containing computer-executable instructions, which when executed by a computer processor, perform a method for displaying a document, the method comprising:
receiving a first message sent by a MTP (media transfer protocol) initiating terminal;
feeding back an access interface of a preset virtual directory structure of an MTP response end to the MTP initiating end according to the first message, wherein the preset virtual directory structure comprises folders with preset classifications;
when receiving an access request aiming at the preset virtual directory structure sent by the MTP initiating terminal, feeding back folder information in the preset virtual directory structure to the MTP initiating terminal so that the MTP initiating terminal displays a corresponding folder;
when receiving an access request of the MTP initiating terminal for the displayed target folder, acquiring a file handle of a file corresponding to the target folder, and feeding back the acquired file handle to the MTP initiating terminal, so that the MTP initiating terminal displays the corresponding file.
Storage medium-any of various types of memory devices or storage devices. The term "storage medium" is intended to include: mounting media such as CD-ROM, floppy disk, or tape devices; computer system memory or random access memory such as DRAM, DDR RAM, SRAM, EDO RAM, Lanbas (Rambus) RAM, etc.; non-volatile memory such as flash memory, magnetic media (e.g., hard disk or optical storage); registers or other similar types of memory elements, etc. The storage medium may also include other types of memory or combinations thereof. In addition, the storage medium may be located in a first computer system in which the program is executed, or may be located in a different second computer system connected to the first computer system through a network (such as the internet). The second computer system may provide program instructions to the first computer for execution. The term "storage medium" may include two or more storage media that may reside in different locations, such as in different computer systems that are connected by a network. The storage medium may store program instructions (e.g., embodied as a computer program) that are executable by one or more processors.
Of course, the storage medium provided by the embodiment of the present invention includes computer-executable instructions, and the computer-executable instructions are not limited to the operations of the file display method described above, and may also perform related operations in the file display method provided by any embodiment of the present invention.
The embodiment of the invention provides a mobile terminal, and an information acquisition device of the mobile terminal provided by the embodiment of the invention can be integrated in the mobile terminal. Fig. 6 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention. As shown in fig. 6, the mobile terminal may include: a housing (not shown), a memory 601, a Central Processing Unit (CPU) 602 (also called a processor, hereinafter referred to as CPU), a circuit board (not shown), and a power circuit (not shown). The circuit board is arranged in a space enclosed by the shell; the CPU602 and the memory 601 are disposed on the circuit board; the power supply circuit is used for supplying power to each circuit or device of the mobile terminal; the memory 601 is used for storing executable program codes; the CPU602 executes a computer program corresponding to the executable program code by reading the executable program code stored in the memory 601 to implement the steps of:
receiving a first message sent by a MTP (media transfer protocol) initiating terminal;
feeding back an access interface of a preset virtual directory structure of an MTP response end to the MTP initiating end according to the first message, wherein the preset virtual directory structure comprises folders with preset classifications;
when receiving an access request aiming at the preset virtual directory structure sent by the MTP initiating terminal, feeding back folder information in the preset virtual directory structure to the MTP initiating terminal so that the MTP initiating terminal displays a corresponding folder;
when receiving an access request of the MTP initiating terminal for the displayed target folder, acquiring a file handle of a file corresponding to the target folder, and feeding back the acquired file handle to the MTP initiating terminal, so that the MTP initiating terminal displays the corresponding file.
The mobile terminal further includes: peripheral interfaces 603, RF (Radio Frequency) circuitry 605, audio circuitry 606, speakers 611, power management chip 608, input/output (I/O) subsystem 609, touch screen 612, other input/control devices 610, and external ports 604, which communicate via one or more communication buses or signal lines 607.
It should be understood that the illustrated mobile terminal 600 is merely one example of a mobile terminal and that the mobile terminal 600 may have more or fewer components than shown, may combine two or more components, or may have a different configuration of components. The various components shown in the figures may be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.
The following describes in detail the mobile terminal for touch operation processing provided in this embodiment, which is exemplified by a mobile phone.
A memory 601, the memory 601 being accessible by the CPU602, the peripheral interface 603, and the like, the memory 601 may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other volatile solid state storage devices.
A peripheral interface 603, said peripheral interface 603 may connect input and output peripherals of the device to the CPU602 and the memory 601.
An I/O subsystem 609, the I/O subsystem 609 may connect input and output peripherals on the device, such as a touch screen 612 and other input/control devices 610, to the peripheral interface 603. The I/O subsystem 609 may include a display controller 6091 and one or more input controllers 6092 for controlling other input/control devices 610. Where one or more input controllers 6092 receive electrical signals from or transmit electrical signals to other input/control devices 610, the other input/control devices 610 may include physical buttons (push buttons, rocker buttons, etc.), dials, slide switches, joysticks, click wheels. It is noted that the input controller 6092 may be connected to any one of: a keyboard, an infrared port, a USB interface, and a pointing device such as a mouse.
A touch screen 612, which touch screen 612 is an input interface and an output interface between the user's mobile terminal and the user, displays visual output to the user, which may include graphics, text, icons, video, and the like.
The display controller 6091 in the I/O subsystem 609 receives electrical signals from the touch screen 612 or transmits electrical signals to the touch screen 612. The touch screen 612 detects a contact on the touch screen, and the display controller 6091 converts the detected contact into an interaction with a user interface object displayed on the touch screen 612, that is, to implement a human-computer interaction, where the user interface object displayed on the touch screen 612 may be an icon for running a game, an icon networked to a corresponding network, or the like. It is worth mentioning that the device may also comprise a light mouse, which is a touch sensitive surface that does not show visual output, or an extension of the touch sensitive surface formed by the touch screen.
The RF circuit 605 is mainly used to establish communication between the mobile phone and the wireless network (i.e., network side), and implement data reception and transmission between the mobile phone and the wireless network. Such as sending and receiving short messages, e-mails, etc. In particular, RF circuitry 605 receives and transmits RF signals, also referred to as electromagnetic signals, through which RF circuitry 605 converts electrical signals to or from electromagnetic signals and communicates with a communication network and other devices. RF circuitry 605 may include known circuitry for performing these functions including, but not limited to, an antenna system, an RF transceiver, one or more amplifiers, a tuner, one or more oscillators, a digital signal processor, a CODEC (CODEC) chipset, a Subscriber Identity Module (SIM), and so forth.
The audio circuit 606 is mainly used to receive audio data from the peripheral interface 603, convert the audio data into an electric signal, and transmit the electric signal to the speaker 611.
The speaker 611 is used to convert the voice signal received by the handset from the wireless network through the RF circuit 605 into sound and play the sound to the user.
And a power management chip 608 for supplying power and managing power to the hardware connected to the CPU602, the I/O subsystem, and the peripheral interface.
The mobile terminal provided by the embodiment of the invention can provide a quick access interface for the preset classified folders for the user, so that the user can conveniently and quickly access the interested classified files, and the file access and display efficiency is improved.
The file display device, the computer-readable storage medium and the mobile terminal provided in the above embodiments can execute the file display method provided in any embodiment of the present invention, and have corresponding functional modules and beneficial effects for executing the method. For technical details that are not described in detail in the above embodiments, reference may be made to a file display method provided in any embodiment of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (8)

1. A file display method, comprising:
receiving a first message sent by a MTP (media transfer protocol) initiating terminal;
feeding back an access interface of a preset virtual directory structure of an MTP response end to the MTP initiating end according to the first message, wherein the preset virtual directory structure comprises folders with preset classifications; the folders of the preset classification are folders commonly used or interested by the user;
when receiving an access request aiming at the preset virtual directory structure sent by the MTP initiating terminal, feeding back folder information in the preset virtual directory structure to the MTP initiating terminal so that the MTP initiating terminal displays a corresponding folder;
when receiving an access request of the MTP initiating terminal for the displayed target folder, acquiring a file handle of a file corresponding to the target folder, and feeding back the acquired file handle to the MTP initiating terminal so as to enable the MTP initiating terminal to display the corresponding file;
after receiving the first message sent by the MTP originating terminal, the method further includes:
and feeding back an access interface of a storage directory structure of the MTP response end to the MTP initiating end according to the first message.
2. The method of claim 1, wherein the first message is a drive letter get command;
the feeding back the access interface of the preset virtual directory structure of the MTP response end to the MTP originating end according to the first message includes:
feeding back a first drive letter of a preset virtual directory structure of an MTP response end to the MTP initiating end according to the drive letter acquisition command;
the access interface for feeding back the storage directory structure of the MTP response end to the MTP originating end according to the first message includes:
and feeding back a second drive letter of a storage directory structure of the MTP response end to the MTP initiating end according to the drive letter acquisition command, wherein the second drive letter is different from the first drive letter.
3. The method according to any one of claims 1-2, wherein upon receiving an access request from the MTP initiator for the displayed target folder, obtaining a file handle of a file corresponding to the target folder, and feeding back the obtained file handle to the MTP initiator, so that the MTP initiator displays the corresponding file, comprises:
when receiving an access request of the MTP initiating terminal for the displayed first folder, acquiring a file type corresponding to the first folder; searching a file matched with the file type in a storage directory structure of the MTP response end, and feeding back a file handle corresponding to the searched file to the MTP initiating end so that the MTP initiating end displays the corresponding file; or the like, or, alternatively,
when receiving an access request of the MTP initiating terminal for the displayed second folder, acquiring a corresponding storage path of the second folder in a storage directory structure of the MTP responding terminal; acquiring a file handle of a file contained in the storage path, and feeding back the acquired file handle to the MTP initiating terminal to enable the MTP initiating terminal to display the corresponding file; or the like, or, alternatively,
when an access request of the MTP initiating terminal for the displayed third folder is received, acquiring a preset range of file attributes corresponding to the third folder, wherein the file attributes comprise modification time, access time or file size; searching the files matched with the preset range in the storage directory structure of the MTP response end, and feeding back the file handle corresponding to the searched files to the MTP initiating end so that the MTP initiating end displays the corresponding files.
4. The method of claim 1, further comprising, before receiving the first message sent by the MTP originating terminal:
and changing a preset virtual directory structure according to the setting operation of a user, wherein the setting operation comprises increasing, decreasing or modifying preset classified folders contained in the preset virtual directory structure.
5. A document display apparatus, comprising:
the message receiving module is used for receiving a first message sent by a MTP (media transfer protocol) initiating terminal;
an access interface feedback module, configured to feed back an access interface of a preset virtual directory structure of the MTP response end to the MTP initiation end according to the first message, where the preset virtual directory structure includes folders of preset classifications; the folders of the preset classification are folders commonly used or interested by the user;
the folder information feedback module is used for feeding back the folder information in the preset virtual directory structure to the MTP initiating terminal when receiving an access request aiming at the preset virtual directory structure and sent by the MTP initiating terminal, so that the MTP initiating terminal displays the corresponding folder;
a file handle feedback module, configured to, when receiving an access request from the MTP originating terminal for a displayed target folder, obtain a file handle of a file corresponding to the target folder, and feed back the obtained file handle to the MTP originating terminal, so that the MTP originating terminal displays the corresponding file;
the access interface feedback module is further configured to feed back an access interface of a storage directory structure of the MTP response end to the MTP originating end according to the first message after receiving the first message sent by the MTP originating end.
6. The apparatus of claim 5, wherein the first message is a drive letter get command;
the access interface feedback module is specifically configured to: feeding back a first drive letter of a preset virtual directory structure of an MTP response end to the MTP initiating end according to the drive letter acquisition command; and feeding back a second drive letter of a storage directory structure of the MTP response end to the MTP initiating end according to the drive letter acquisition command, wherein the second drive letter is different from the first drive letter.
7. A computer-readable storage medium on which a computer program is stored, the program, when being executed by a processor, implementing a file display method according to any one of claims 1 to 4.
8. A mobile terminal comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the file display method according to any one of claims 1 to 4 when executing the computer program.
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