CN114371978B - Method, device, apparatus and system for android to acquire data - Google Patents
Method, device, apparatus and system for android to acquire data Download PDFInfo
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- CN114371978B CN114371978B CN202210018033.3A CN202210018033A CN114371978B CN 114371978 B CN114371978 B CN 114371978B CN 202210018033 A CN202210018033 A CN 202210018033A CN 114371978 B CN114371978 B CN 114371978B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3089—Monitoring arrangements determined by the means or processing involved in sensing the monitored data, e.g. interfaces, connectors, sensors, probes, agents
- G06F11/3093—Configuration details thereof, e.g. installation, enabling, spatial arrangement of the probes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3003—Monitoring arrangements specially adapted to the computing system or computing system component being monitored
- G06F11/3041—Monitoring arrangements specially adapted to the computing system or computing system component being monitored where the computing system component is an input/output interface
Abstract
The invention relates to a method for android to acquire data, which monitors a trigger event of a file system through a file listener of an android layer; in response to the fact that the monitor monitors a preset trigger event, acquiring original data of input equipment of a specified type through a Linux core layer; passing the raw data of the specified type of input device into an android layer. The invention enables developers to directly use the original data of the input equipment acquired by the Linux core layer, thereby reducing the process of decapsulation, improving the efficiency and reducing errors.
Description
Technical Field
The invention relates to the field of interaction, in particular to a method, equipment, a device and a system for obtaining data by an android.
Background
In the prior art, when the android layer is used for collecting the keyboard and the original mouse protocol data and controlling other computers, the mouse and the keyboard data collected by the android layer are packaged and are not standard mouse and original keyboard protocol data, the other computers need to unpack the mouse and keyboard data of the android layer again and then restore the mouse and the keyboard data into mouse and key values, so that the efficiency is low, and the problem that the data caused by the fact that the android layer or other computers do not have or cannot map key values is not complete is solved.
Disclosure of Invention
For the above prior art, an embodiment of the present invention provides a method for acquiring data by an android, where the method includes:
monitoring a trigger event of a file system through a file monitor of an android layer;
responding to the condition that the monitor monitors a preset triggering event, and acquiring original data of input equipment of a specified type through a Linux kernel layer; and
passing the raw data of the specified type of input device into an android layer.
According to some embodiments of the present invention, the listening of the trigger event of the file system by the file listener of the android layer includes:
and monitoring the creation of a device file corresponding to the input device in the Linux kernel layer in the file system through a file listener of the android layer.
According to some embodiments of the present invention, the obtaining raw data of the input device of the specified type through the Linux kernel layer in response to the listener monitoring the predetermined trigger event comprises:
responding to the condition that the monitor monitors that the device file corresponding to the input device is created, and acquiring structural body information of the input device under the Linux core layer;
judging whether the input equipment is input equipment of a specified type or not according to the structural body information of the input equipment;
and acquiring the original data of the input device of the specified type in response to the input device of the specified type.
According to some embodiments of the invention, said passing said raw data of said specified type of input device into an android layer comprises:
and reading the original data in an NDK mode, and transmitting the original data to an android layer.
According to some embodiments of the invention, the original data is read in an NDK manner, and after the original data is transmitted to an android layer, the android layer receives the original data through a JNI.
The present application also provides a data processing apparatus, comprising:
the file system monitoring module is configured to monitor a trigger event of a file system through a file listener of an android layer;
the system comprises a first data reading module, a second data reading module and a monitor, wherein the first data reading module is configured to respond to the monitor monitoring a preset triggering event and acquire raw data of a specified type of input equipment through a Linux core layer; and
a second data reading module configured to pass the raw data of the specified type of input device into an android layer.
The present application also provides a data processing apparatus, which includes:
the file system monitoring module is used for monitoring a trigger event of the file system through a file listener in an android layer so as to identify hot plug of the input equipment;
the device type detection module is used for finding a path of a file of the input device of the specified type in a Linux core layer;
the input equipment structure information processing module is used for acquiring the structure information of the input equipment under the path of the file of the input equipment of the specified type and acquiring original data corresponding to the input equipment according to the structure information;
and the raw data receiving module is used for receiving the raw data corresponding to the input equipment, which is obtained by the input equipment structure information processing module.
The present application further provides a control apparatus, wherein the control apparatus is communicatively connected to a specified type of input device, and the control apparatus is configured to receive a hot plug of the specified type of input device to perform the method as described above.
The present application also provides a control system, comprising:
an input device;
a control apparatus communicatively coupled to the input device, the control apparatus configured to receive a hot-plug of the input device to perform the method as described above; and
at least one terminal;
the terminal is in communication connection with the control device to receive original data of the control device;
the terminal is configured to execute a corresponding instruction on the terminal after converting the raw data into an input event;
the terminal is in communication connection with a video input interface of the control device through a video output interface; the terminal is further configured to feed back the display interface after the corresponding instruction is executed to the control device in a video stream mode.
According to some embodiments of the invention, wherein the input device comprises a mouse, a keyboard, a touch screen, and a sensor, wherein the specified type of input device is any one of the input devices; and the at least one terminal comprises a serial port, a USB port, a network adapter and a video output interface.
According to some embodiments of the invention, the terminal is communicatively connected to the control device via at least one of a serial port, a USB port, or a network adapter.
The technical scheme of the embodiment of the invention can avoid a series of processes of packaging and de-packaging the input equipment data, has high efficiency and is not easy to make mistakes, and also avoids the problems caused by the failure or no mapping of key values in each link in the prior art.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a control system according to some embodiments of the present invention;
FIG. 2 is a schematic view of an operating system of a control device according to some embodiments of the present invention;
FIG. 3 is a flow diagram of a method of android get data, in accordance with some embodiments of the present invention;
FIG. 4 is a flow diagram of obtaining raw data for a specified type of input device for a Linux kernel according to some embodiments of the present invention;
FIG. 5 is a schematic diagram of a data processing apparatus according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a data processing apparatus of yet another embodiment of the present invention;
fig. 7 is a schematic diagram of a control device according to some embodiments of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention.
Furthermore, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.
Unless the context clearly requires otherwise, throughout the description, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including but not limited to".
In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
FIG. 1 is a schematic diagram of a control system according to some embodiments of the present invention.
As shown in fig. 1, the control system of the embodiment of the present invention includes a control apparatus 10, a terminal 20, and an input device 30.
The input device 30 of the present embodiment includes a mouse, a keyboard, a touch screen, and a sensor.
FIG. 2 is a schematic diagram of an operating system of a control device according to some embodiments of the invention.
Referring to fig. 1, an operating system adopted by the control apparatus 10 according to the embodiment of the present invention is an android operating system 14. Referring to FIG. 2, the android operating system 14 includes an android layer 15 and a Linux kernel layer 16.
In the prior art, the Linux kernel 16 obtains original data of the input device 30 through a hardware driver, the Linux kernel sends the original data to the android layer 15, and the android layer 15 packages the original data into second data and provides the second data for developers to use.
For example, the input device 30 is a mouse, and after the mouse is accessed to the android operating system 14, the mouse is used to generate original data in a Linux kernel layer, at this time, the Linux kernel layer 16 sends the original data to the android layer 15, then, the android layer converts or encapsulates the data into second data again and transmits the second data to users of other terminals, and then, the other terminals convert the second data into original mouse data which can be used by the terminal. The user of other terminal can identify and obtain the mouse data only after installing the corresponding conversion program, and the condition that the mapped key value is not complete exists in any one of the two conversion processes. For example, for a kvm, when a key value is transmitted to a kvm terminal, original data generally needs to be transmitted, and a kvm user cannot obtain the corresponding key value due to an existing data processing mode; for another example, windows keys are not needed in a mobile phone before, but when the mobile phone can be externally connected with a keyboard and a mouse, some key values may not be mapped, so that a user cannot receive an event of a corresponding key.
Referring to fig. 1, when a developer desires to control the terminal 20 through the input device 30, the developer needs to restore the second data to the original data of the mouse on the control apparatus 10 or the terminal 20, which is inefficient and error-prone.
With continued reference to fig. 1, the control device 10 according to the embodiment of the present invention includes a first USB port 12, a video input interface 11, and a third USB port 13. The third USB port 13 is communicatively connected to the input device 30, and the communication connection may be a wired connection or a wireless connection.
The control system of the embodiment of the present invention is configured to control at least one terminal 20. The terminal 20 may be an electronic device such as a cell phone, a tablet, a multimedia player, a wearable device, a personal computer, etc. The terminal 20 may be a general-purpose device or a dedicated device.
The terminal 20 includes a serial port (not shown), a second USB port 22, a network adapter (not shown), a video output interface 21, and the like.
The terminal 20 is in communication connection with the control device 10 through at least one of a serial port, a second USB port or a network adapter to receive raw data of the control device 10.
In the embodiment of the present invention, the terminal 20 converts the raw data into a mouse and/or keyboard event and then executes a corresponding instruction on the terminal 20.
In another embodiment of the present invention, the raw data may be converted into a mouse and/or keyboard event on the control device 10 and then transmitted to the terminal 20, and the terminal 20 directly executes the mouse and keyboard event.
In still another embodiment of the present invention, a hardware conversion device may be provided, which receives the raw data sent by the control device 10, converts the raw data into mouse and/or keyboard events by the conversion device, and then sends the converted mouse and/or keyboard events to the terminal 20. The conversion device may be disposed at one end of the control device 10, or may be disposed at one end of the terminal 20, and those skilled in the art may determine that the hardware conversion device is disposed at one end of the control device 10 or at one end of the terminal 20 according to the actual situation.
After the terminal 20 of the embodiment of the present invention executes the command corresponding to the mouse and/or keyboard event, the terminal 20 sends the display interface of the terminal 20 to the control device 20 through the video output interface 21 in a video stream manner. Specifically, the terminal 20 of the embodiment of the present invention is communicatively connected to the video input interface 11 of the control device 10 through the video output interface 21, so as to transmit the display interface of the terminal 20 to the control device 10 in a video stream manner.
The embodiment of the invention provides a method for android to acquire data, so that a developer can directly use original data of input equipment acquired by a Linux core layer, the process of unpacking is reduced, the efficiency is improved, and errors are reduced.
FIG. 3 is a flow diagram of a method for android to obtain data, in accordance with some embodiments of the present invention.
Referring to fig. 3, the method for acquiring data by an android according to the embodiment of the present invention includes steps 100, 200, and 300.
Specifically, in the embodiment of the present invention, a listener is used to listen to a trigger event of the file system of the android layer 15 shown in fig. 2. For example, as shown in fig. 1, the input device 30 accesses the control apparatus 10 in a hot plug manner, and specifically, in the embodiment of the present invention, the file listener of the android layer listens for creation of a device file corresponding to the input device in the Linux core layer in the file system. That is, when an input device accesses the Linux kernel, the Linux kernel creates a corresponding device file for the input device. When the device file is created, a listener of the android layer can listen to the trigger event of the device file being created.
However, since it is not determined that the input device that is hot-plugged into the Linux core is not a specified type of input device, specifically, the process is continued through step 200.
FIG. 4 is a flow diagram of obtaining raw data for a specified type of input device for a Linux kernel in accordance with some embodiments of the present invention.
Referring to fig. 4, step 200 includes 3 sub-steps, step 210-step 230, respectively.
Specifically, when an input device is accessed to the linux system through hot plugging, the linux system creates a new device file for the input device. After the hot plug event of the input device is detected by the listener, the embodiment of the present invention obtains the structure information of the input device under the new device file through step 210 because the new device file is monitored. The structure information is a specific content analyzed from the data type and the value of the structure.
And step 220, judging whether the input equipment is the input equipment of the specified type according to the structural body information of the input equipment.
Input devices of embodiments of the present invention include, but are not limited to, a mouse, a keyboard, a touch screen, and a sensor.
When the input device is accessed to the control system in the hot plug mode, the developer does not know the type of the input device, and therefore, in step 220, the structural information of the input device accessed to the Linux core layer is obtained, and after the structural information is analyzed, whether the input device is the input device of the specified type is judged.
Specifically, the specified type of input device may be any one of a mouse, a keyboard, a touch screen, and a sensor.
Taking a mouse as an example, it is determined whether the input device is a mouse through step 220.
Similarly, if the developer needs to obtain the raw data of the keyboard, it is determined whether the input device is a keyboard, via step 220.
Specifically, step 220 gives a result of whether the input device is the input device of the specified type, for example, the specified input device is a keyboard, and if the input device is determined to be a keyboard in step 220, the result given in step 220 is true; if the input device is not a keyboard as determined by step 220, then step 220 gives false results.
And 300, transmitting the original data of the input device of the specified type to an android layer.
According to some embodiments of the present invention, the original data may be read by means of an NDK (Native Development Kit), and then transferred to the android layer.
And the android layer receives the original data of the input equipment through a JNI (Java Native Interface).
The technical scheme of the embodiment of the invention can avoid a series of encapsulation and de-encapsulation processes of the input equipment data, has high efficiency and is not easy to make mistakes, and avoids the problems caused by the failure or no mapping of key values in each link in the prior art.
FIG. 5 is a schematic diagram of a data processing apparatus of some embodiments of the inventions.
Referring to fig. 5, a data processing apparatus 50 of an embodiment of the present invention includes: a file system monitoring module 51, a first data reading module 52 and a second data reading module 53.
The file system monitoring module 51 is configured to monitor a trigger event of the file system through a file listener of an android layer;
the first data reading module 52 is configured to obtain raw data of a specified type of input device through the Linux kernel in response to the listener listening to a predetermined trigger event; and
the second data reading module 53 is configured to pass the raw data of the specified type of input device into the android layer.
Fig. 6 is a schematic diagram of a data processing apparatus according to yet another embodiment of the present invention.
The data processing device of the embodiment of the invention comprises: a file system monitoring module 31, a device type detection module 32, an input device structure information processing module 33, and a raw data receiving module 34.
Referring to fig. 2, an operating system of a control apparatus according to another embodiment of the present invention is the same as that of the foregoing embodiment.
The system monitoring module 31 according to another embodiment of the present invention is configured to monitor, in the android layer 15, a trigger event of the file system through a file monitor to identify hot plug of the input device. When an input device is connected to the control apparatus 10, the file listening system can monitor that a new device file is created by the Linux core layer 16. The system listening module 31 sends the monitored device file change of the Linux core layer 16 and the device file path of the Linux core layer 16 to the device type detection module 32.
The device type detection module 32 according to another embodiment of the present invention is configured to find a device file path corresponding to an input device of a specified type in the device files of the Linux core layer 16, for example, if the input device of the specified type is a mouse, the device detection module 32 finds a device file created by the Linux core layer 16 for a newly inserted mouse after the mouse is hot-plugged in the Linux core layer 16.
The input device structure information processing module 33 according to another embodiment of the present invention is configured to obtain structure information of the input device in the path of the device file, and obtain original data corresponding to the input device according to the structure information. For example, when the input device is a mouse, the input device structure information processing module 33 obtains structure information of the mouse under a path of a device file created by the Linux core layer 16 for the newly inserted mouse, so as to obtain original data of the mouse.
The raw data receiving module 34 according to still another embodiment of the present invention is configured to receive the raw data of the input device sent by the input device structure information processing module 33, and provide the raw data for the developer to use. Therefore, the original data of the input device in the Linux kernel layer can be provided for developers, when the developers use the original data to control the terminal, the data processing device adopting the embodiment of the invention can easily obtain the original data in the Linux kernel layer, the efficiency of controlling the terminal by adopting the original data is high, and errors are not easy to occur.
Fig. 7 is a schematic diagram of a control device according to some embodiments of the invention.
The control apparatus of some embodiments of the present invention can be communicatively connected to an input device of a specified type, and the control apparatus is configured to receive hot-plug of the input device of the specified type to execute the method for obtaining data by an android of the embodiments of the present invention.
The control device of some embodiments of the present invention may be a dedicated device or a general-purpose device.
When the control apparatus of the embodiment of the present invention is a general-purpose control device, as shown in fig. 7, the control apparatus 800 includes a computing unit 801, which can execute the method for obtaining data of an android according to the embodiment of the present invention according to a computer program stored in a Read Only Memory (ROM) 802 or a computer program loaded from a storage unit 808 into a Random Access Memory (RAM) 803. The calculation unit 801, the ROM 802, and the RAM803 are connected to each other by a bus 804. An input/output (I/O) interface 805 is also connected to bus 804.
A plurality of components in the control apparatus 800 are connected to the I/O interface 805. An output unit 807 such as various types of displays, speakers, and the like; a storage unit 808, such as a magnetic disk, optical disk, or the like; and a communication unit 809 such as a network card, modem, wireless communication transceiver, etc. The communication unit 809 allows the control apparatus 800 to exchange information/data with other devices through a computer network such as the internet and/or various telecommunication networks.
Program code for implementing the methods of the present disclosure may be written in any combination of one or more programming languages. These program codes can be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the methods of android acquisition data specified in the flowchart and/or block diagrams to be implemented. The program code may execute entirely on the machine, partly on the machine, as a stand-alone software package partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In order to provide interaction with a user, the control device has: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user.
The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), and the Internet.
It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the embodiments of the present invention may be executed in parallel, sequentially, or in different orders, and are not limited herein as long as the desired results of the technical solutions disclosed in the present disclosure can be achieved.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A method of android acquisition data, the method comprising:
monitoring a trigger event of a file system through a file listener of an android layer;
in response to the fact that the monitor monitors a preset trigger event, acquiring original data of input equipment of a specified type through a Linux core layer; and
transmitting the raw data of the input equipment of the specified type to an android layer, so that the android layer can send the raw data to at least one terminal, and the terminal is configured to execute a corresponding instruction on the terminal after converting the raw data into an input event;
said passing the raw data of the input device of the specified type into an android layer comprises:
reading the original data in an NDK mode, and transmitting the original data to an android layer;
and reading the original data in an NDK mode, and after the original data is transmitted to an android layer, the android layer receives the original data through JNI.
2. The android get data method of claim 1, wherein the listening, by the file listener of the android layer, for the triggering event of the file system comprises:
and monitoring the creation of a device file corresponding to the input device in the file system in the Linux core layer through a file listener of the android layer.
3. The android get data method of claim 1, wherein the obtaining raw data of a specified type of input device through a Linux kernel in response to the listener listening to a predetermined triggering event comprises:
responding to the fact that the monitor monitors that the device file corresponding to the input device is created, and acquiring structure body information of the input device under the Linux core layer;
judging whether the input equipment is input equipment of a specified type or not according to the structural body information of the input equipment;
and acquiring the original data of the input device of the specified type in response to the input device of the specified type.
4. A data processing apparatus comprising:
the file system monitoring module is configured to monitor a trigger event of a file system through a file listener of an android layer;
the first data reading module is configured to respond to the monitor monitoring a preset triggering event, and obtain raw data of an input device of a specified type through a Linux kernel layer; and
the second data reading module is configured to transmit the original data of the input device of the specified type to an android layer, so that the android layer can send the original data to at least one terminal, and the terminal is configured to convert the original data into an input event and then execute a corresponding instruction on the terminal;
said passing the raw data of the input device of the specified type into an android layer comprises:
reading the original data in an NDK mode, and transmitting the original data to an android layer;
and reading the original data in an NDK mode, and after the original data is transmitted to an android layer, the android layer receives the original data through JNI.
5. A control apparatus, wherein the control apparatus is communicatively coupled to a specified type of input device, the control apparatus configured to receive a hot-plug of the specified type of input device to perform the method of any of claims 1-3 above.
6. A control system, comprising:
an input device;
a control apparatus communicatively coupled to the input device, the control apparatus configured to receive a hot-plug of the input device to perform the method of any of claims 1-3 above; and
at least one terminal;
the terminal is in communication connection with the control device to receive original data of the control device;
the terminal is configured to execute a corresponding instruction on the terminal after converting the raw data into an input event;
the terminal is in communication connection with a video input interface of the control device through a video output interface; the terminal is further configured to feed back the display interface after the corresponding instruction is executed to the control device in a video stream mode.
7. The control system of claim 6, wherein the input devices include a mouse, a keyboard, a touch screen, and a sensor, wherein the specified type of input device is any one of the input devices; and the at least one terminal comprises a serial port, a USB port, a network adapter and a video output interface.
8. The control system of claim 7, wherein the terminal is communicatively coupled to the control device via at least one of a serial port, a USB port, and a network adapter.
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| CN107015803A (en) * | 2017-03-21 | 2017-08-04 | 武汉斗鱼网络科技有限公司 | Button monitor method and system based on Linux inner core |
| CN109260701A (en) * | 2018-07-10 | 2019-01-25 | 广州小鸡快跑网络科技有限公司 | A kind of conversion method and device of Android system standard incoming event |
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