CN114385304B - Method for calling Linux screenshot tool by android application - Google Patents
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- CN114385304B CN114385304B CN202210284988.3A CN202210284988A CN114385304B CN 114385304 B CN114385304 B CN 114385304B CN 202210284988 A CN202210284988 A CN 202210284988A CN 114385304 B CN114385304 B CN 114385304B
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/451—Execution arrangements for user interfaces
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/542—Event management; Broadcasting; Multicasting; Notifications
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- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/543—User-generated data transfer, e.g. clipboards, dynamic data exchange [DDE], object linking and embedding [OLE]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
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Abstract
The application discloses a method for calling a Linux screenshot tool by Android application, which is characterized in that a Linux compatible Android system is set, a communication channel between a Linux operating system and the Android system arranged in a container is established in the system, and the Linux screenshot tool is called by the Android application to perform custom screenshot and store. The Linux window program sends the software package name and the screenshot path to the Android system through the socket, the Android end event service program informs the Android application to read the screenshot file according to the software package name and the screenshot saving path and call the sharing interface to share, and the functions of calling the Linux screenshot tool one key and sharing the screenshot are achieved. The technical problem that the picture content of the screenshot of the Linux operating system in the existing Linux-compatible Android system cannot be directly called by the Android system and needs to be realized by accessing the Linux file system, so that the screenshot sending link is complex in the Android environment is solved.
Description
Technical Field
The application belongs to the technical field of Android, and particularly relates to a method for calling a Linux screenshot tool by Android application.
Background
In recent years, with the increase of Android users and the maturity and development of Android software and hardware products, the Android application ecology presents explosive development, exceeds the Windows application ecology and the iOS application ecology in many fields, and becomes the most widely used application ecology at present. With the rapid development of information technology, the national attention degree on information security is increasingly promoted, and domestic autonomous operating systems based on open source Linux operating systems are increasingly developed, but the serious shortage of the ecological application of the Linux operating systems still is a pain point which puzzles the real market promotion of the Linux operating systems. In order to solve the ecological problem of the Linux operating system, two key points of insufficient user number and insufficient number of platform application software must be solved. Android has a wide user group in the field of mobile terminals, a mature development platform and an application software group, and has a certain reference value for solving the current embarrassment of a Linux operating system.
The Android operating system is developed based on the Linux kernel, and the characteristics of the mobile terminal device are greatly improved and enhanced in the user space, so that great possibility and convenience are provided for the Linux operating system to be compatible with Android applications, and rich applications of a mobile terminal can be successfully operated on a PC terminal. In recent years, compatible support of an Android application ecology on a Linux operating system becomes a research focus, many researchers at home and abroad try to transfer an Android operating environment to a Linux computer platform to achieve the effect of compatible support of the Android application ecology on the Linux operating system, and meanwhile various compatible technologies are derived, so that the development of the Linux application ecology is greatly promoted, the defects of Linux application are overcome to a great extent, the daily office work, entertainment and other requirements of Linux operating system users are facilitated, and the pace of the Linux operating system reaching the consumption market is accelerated.
The screenshot tool is also one of the indispensable functions for the Linux operating system. However, Android communication applications such as WeChat and QQ cannot directly call a Linux screenshot tool to complete screenshot and share, so that some bad experiences are caused, and the gap of the system is deepened. At present, picture contents of screenshots of a Linux operating system in an existing Linux compatible Android system cannot be directly called by the Android system, and the screenshots need to be searched and selected for sending by accessing the Linux file system, so that the screenshot sending link under the Android environment is complex, and if the screenshot is sent each time and needs to be achieved by accessing the Linux file system, the problem becomes more complex.
Disclosure of Invention
The application provides a method for calling a Linux screenshot tool by an Android application, which is used for solving the technical problem that the picture content of the screenshot of a Linux operating system in the existing Linux-compatible Android system cannot be directly called by the Android system and needs to be realized by accessing a Linux file system, so that the screenshot sending link is complex in the Android environment.
In view of this, the present application provides a method for invoking a Linux screenshot tool by an android application, including:
performing Android system operation compatible environment preparation on a Linux operating system to obtain the Linux compatible Android system, wherein the Android system comprises an Android application and an Android end event service program, the Linux operating system comprises a Linux window program and a Linux screenshot tool, and an Android application picture is displayed in the Linux window program;
establishing a communication channel between a Linux operating system and an Android system arranged in a container;
the Android application initiates a screenshot sharing request to a Linux screenshot tool through a Linux window program;
the Linux screenshot tool carries out screenshot and stores a screenshot file;
the Linux window program sends a software package name and a screenshot path to the Android event service program through a socket;
and the Android end event service program informs the Android application to read the screenshot file according to the software package name and the screenshot saving path and calls a sharing interface to share.
Optionally, performing environment preparation compatible with the Android system operation on the Linux operating system to obtain the Linux compatible with the Android system, including:
loading an Android mirror image by using a docker on a Linux operating system, so that the Linux operating system and the Android system share the same Linux kernel;
and starting the Android system in the container to obtain a Linux compatible Android system, wherein files between the Linux operating system and the Android system are intercommunicated, and a data sharing directory is obtained.
Optionally, establishing a communication channel between the Linux operating system and the Android system disposed in the container includes:
compiling a Linux window displaying program to enable each Android application to correspond to one graphic window at the Linux end;
writing an event service program of which the Android end is based on a Unix domain socket;
and the Linux window program and the event service program establish a socket communication channel.
Optionally, the Android application initiates a screenshot sharing request to the Linux screenshot tool through a Linux window program, including:
starting an Android application and logging in;
and initiating a screenshot sharing request on a graphic window corresponding to the Android application picture displayed on the Linux end.
Optionally, the Linux screenshot tool performs screenshot and stores the screenshot file, including:
starting a Linux screenshot tool, and monitoring screenshot related signals or clipboard data change signals in a graphic window displaying an Android application picture at a Linux end;
and (3) a user self-defines and selects a screenshot area, the Linux screenshot tool performs screenshot when monitoring screenshot related signals or clipboard data change signals, and the obtained screenshot file is stored as a clipboard screenshot or a local screenshot.
Optionally, the method for sharing the software package includes the following steps that the Android end event service program informs the Android application to read a screenshot file according to the software package name and a screenshot saving path and call a sharing interface to share the screenshot file, and the method includes the following steps:
the Linux terminal is connected with the Android terminal event service program according to the identity of the client terminal, and after the connection is successful, the software package name and the screenshot saving path corresponding to the Android system are sent to the Android terminal event service program;
after receiving the software package name and the screenshot saving path, the Android end event service program starts to send system broadcast messages;
after receiving the system broadcast message, the Android system carries out matching according to the software package name in the system broadcast message;
and the matched Android application starts a sharing process according to a screenshot saving path in the system broadcast message, and calls a sharing interface to share.
According to the technical scheme, the embodiment of the application has the following advantages:
according to the method for calling the Linux screenshot tool by the Android application, the Linux compatible Android system is set, and a communication channel between the Linux operating system and the Android system arranged in the container is established in the system. And the Android application initiates a screenshot sharing request to a Linux screenshot tool through a Linux window program, and then the Linux screenshot tool performs screenshot and stores a screenshot file. And then the Linux window program sends the software package name and the screenshot path to the Android end event service program through the socket, and the Android end event service program informs the Android application to read the screenshot file and call the sharing interface for sharing according to the software package name and the screenshot saving path, so that the Android application running in the Linux-compatible Android system can realize the function of calling a Linux screenshot tool and sharing the screenshot, the threshold caused by a container is reduced, the problems of inflexible screenshot of the Android application, inflexible screenshot file sharing and the like are avoided, and the experience of users is improved. The technical problem that the picture content of the screenshot of the Linux operating system in the existing Linux-compatible Android system cannot be directly called by the Android system and needs to be realized by accessing the Linux file system, so that the screenshot sending link is complex in the Android environment is solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic flow diagram of a method for calling a Linux screenshot tool by an android application provided in the present invention;
FIG. 2 is a schematic flow diagram illustrating a prior art process for calling a screenshot tool by an Android compatible application in a Linux operating system;
fig. 3 is another schematic flow diagram of a method for calling a Linux screenshot tool by using an android application provided by the present invention.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example 1
For convenience of understanding, please refer to fig. 1 and fig. 2, an embodiment of a method for invoking a Linux screenshot tool by an android application provided in the present application includes:
and S11, performing Android system running compatible environment preparation on the Linux operating system to obtain the Linux compatible Android system, wherein the Android system comprises an Android application and an Android end event service program, the Linux operating system comprises a Linux window program and a Linux screenshot tool, and the Android application picture is displayed in the Linux window program.
S12, establishing a communication channel between the Linux operating system and the Android system arranged in the container.
And S13, the Android application initiates a screenshot sharing request to the Linux screenshot tool through the Linux window program.
And S14, carrying out screenshot by the Linux screenshot tool and saving the screenshot file.
And S15, sending the software package name and the screenshot path to the Android end event service program through the socket by the Linux window program.
And S16, the Android end event service program informs the Android application to read the screenshot file according to the software package name and the screenshot saving path and calls the sharing interface to share.
It should be noted that, as shown in fig. 2, the screenshot process of the existing Linux-compatible Android system is that a user performs screenshot by using a Linux screenshot tool in the Linux system, firstly, screenshot content is obtained, then, the user selects whether to store the screenshot, and if the user does not store the screenshot, the screenshot work is ended; and if the user selects to store the screenshot, storing the screenshot into the Linux file system, and sending the screenshot after the user needs to access the Linux file system to search and select the screenshot. The operation steps lead to complex links for sending the screenshot in the Android environment, and if the screenshot is sent each time and needs to be achieved by accessing the Linux file system, the problem becomes more complex. Therefore, in order to solve the problem, in the embodiment of the present application, firstly, an environment preparation compatible with the Android system operation is performed on the Linux operating system, so as to obtain the Linux compatible Android system. And secondly, establishing a communication channel between the Linux operating system and the Android system arranged in the container, communicating the Android application with a using channel of a Linux screenshot tool of the Linux system, and providing a one-key call Linux screenshot tool and a sharing function for the Android application. When a user conducts screenshot, the Android application launches a screenshot sharing request to the Linux screenshot tool through the Linux window program, and then the Linux screenshot tool conducts screenshot and stores a screenshot file. And then, the Linux window program sends the software package name and the screenshot path to the Android end event service program through the socket. And finally, the Android event service program informs the Android application of reading the screenshot file and calling the sharing interface for sharing according to the software package name and the screenshot saving path, so that the function that a user can call a Linux screenshot tool for screenshot and sharing by one key when using the Android application in a Linux-compatible Android system can be realized, the operation is convenient and fast, the problems that the screenshot of the Android application is not flexible, the screenshot file is not flexible and the like are solved, and the user experience feeling is greatly improved.
A container is a lightweight virtual technology supported by the Linux kernel. A new Linux system (including other systems customized based on the Linux system, such as an Android system) can be run in the Linux operating system through a container technology, and the client system and the host system are isolated from each other by the container. In the Linux-compatible Android system, the operating environment of the Android system is run in a container. The Linux compatible Android system comprises a Linux operating system and an Android system running on the Linux operating system, and Android applications on the Android system can run on the Linux operating system to realize corresponding functions. socket communication channel, also called socket, is an abstraction of an endpoint for two-way communication between application processes on different hosts in a network, which is a convention or a way for communication between computers. A socket is the end of a process's communication over a network and provides a mechanism for application layer processes to exchange data using a network protocol.
According to the method for calling the Linux screenshot tool by the Android application, the types of the Android-side event service programs are selected in various manners, and a user can set the Android-side event service programs according to needs. The method comprises the steps of performing Android system running compatible environment preparation on a Linux operating system to obtain the Linux compatible Android system, and then establishing a communication channel between the Linux operating system and the Android system arranged in a container. When a user conducts screenshot, the Android application launches a screenshot sharing request to the Linux screenshot tool through the Linux window program, conducts screenshot and stores a screenshot file. And then the Linux window program starts to send the software package name and the screenshot path to the Android end event service program through the socket, and the Android application is informed by the Android end event service program to read the screenshot file according to the software package name and the screenshot saving path and call the sharing interface for sharing. The technical problem that the picture content of the screenshot of the Linux operating system in the existing Linux-compatible Android system cannot be directly called by the Android system and needs to be realized by accessing the Linux file system, so that the screenshot sending link is complex in the Android environment is solved.
Example 2
As a further improvement to embodiment 1, please refer to fig. 3, the present application provides another embodiment of a method for invoking a Linux screenshot tool by an android application, including:
and S21, loading the Android image by using a docker on the Linux operating system, and enabling the Linux operating system and the Android system to share the same Linux kernel.
And S22, starting the Android system in the container to obtain a Linux-compatible Android system, wherein the Linux operating system and the Android system are in file intercommunication and share a directory.
S23, compiling and displaying a Linux window program, enabling each Android application to correspond to a graphic window at the Linux end, compiling an event service program of which the Android end is based on a Unix domain socket, and establishing a socket communication channel between the Linux window program and the event service program.
And S24, starting the Android application and logging in, and initiating a screenshot sharing request on a graphic window corresponding to the Android application picture displayed on the Linux end.
And S25, starting a Linux screenshot tool, and monitoring screenshot related signals or clipboard data change signals in a graphic window displaying an Android application picture at a Linux end.
And S26, selecting a screenshot area by a user, carrying out screenshot when the Linux screenshot tool monitors a screenshot related signal or a clipboard data change signal, and storing an obtained screenshot file as a clipboard screenshot or a local screenshot.
And S27, the Linux window program sends the software package name and the screenshot path to the Android end event service program through the socket.
And S28, connecting the Linux end with the Android end event service program according to the identity of the client, and sending the software package name and the screenshot storage path corresponding to the Android system to the Android end event service program after the connection is successful.
And S29, after receiving the software package name and the screenshot preservation path, the Android end event service program starts to send system broadcast messages, after receiving the system broadcast messages, the Android system performs matching according to the software package name in the system broadcast messages, the matched Android application starts a sharing process according to the screenshot preservation path in the system broadcast messages, and a sharing interface is called to share.
It should be noted that docker is a container technology that effectively partitions resources of a single operating system into isolated groups, so as to better balance conflicting resource usage requirements among the isolated groups. The Android mirror image is loaded by using the docker on the Linux operating system, so that the Linux operating system and the Android system share the same Linux kernel. And starting the Android system in the container to obtain a Linux compatible Android system, so that files between the Linux operating system and the Android system are intercommunicated, and a data sharing directory is formed. By compiling and displaying the Linux window program, each Android application corresponds to one graphic window at the Linux end, and compiling the event service program of which the Android end is based on the Unix domain socket. The Unix domain socket is used for interprocess communication (IPC) of the same host, does not need to pass through a network protocol stack, does not need to pack and unpack, calculate and check, maintain sequence numbers, respond and the like, only copies application layer data from one process to another process, and can be used for two processes without genetic relationship. Starting the Android application and logging in, for example, running and logging in WeChat, and establishing a socket communication channel between a Linux window program and an Android-end event service program based on a Unix domain socket, wherein the Android-end event service program in the example is an Android-end event service program based on the Unix domain socket. When a user starts the Linux screenshot tool, the Linux screenshot tool monitors screenshot related signals or clipboard data change signals in a graphic window displaying an Android application picture at a Linux end. When a user selects a screenshot area in a self-defined mode, a Linux screenshot tool carries out screenshot when monitoring screenshot related signals or clipboard data change signals, and an obtained screenshot file is stored as a clipboard screenshot or a local screenshot, for example, picture data in a clipboard is stored as a local png picture. And then the Linux window program sends the software package name and the screenshot path to the Android end event service program through the socket. And the Linux end is connected with the Android end event service program by the identity of the client, and after the connection is successful, the software package name and the screenshot preservation path corresponding to the Android system are sent to the Android end event service program. And after receiving the software package name and the screenshot saving path, the Android end event service program starts to send system broadcast messages. And after receiving the system broadcast message, the Android system performs matching according to the software package name in the system broadcast message, starts a sharing process for the matched Android application according to the screenshot storage path in the system broadcast message, and calls a sharing interface for sharing. The method has the advantages that a user only needs to select a screenshot area in a user-defined mode, and the Linux screenshot tool and the sharing function are called in a one-touch mode, so that the technical problem that in an existing Linux compatible Android system, the picture content of screenshot of a Linux operating system cannot be directly called by the Android system and needs to be achieved by accessing a Linux file system, and therefore the screenshot sending link under the Android environment is complex is solved.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (1)
1. A method for calling, capturing and sharing a picture by a Linux screenshot tool by Android application is characterized by comprising the following steps:
s1, loading the Android mirror image on the Linux operating system by using a docker, and enabling the Linux operating system and the Android system to share the same Linux kernel;
s2, starting an Android system in the container to obtain a Linux-compatible Android system, wherein files of the Linux operating system and the Android system are intercommunicated, and a data sharing directory is shared;
s3, compiling and displaying a Linux window program, enabling each Android application to correspond to a graphic window at the Linux end, compiling an event service program of which the Android end is based on a Unix domain socket, and establishing a socket communication channel by the Linux window program and the event service program;
s4, starting Android application and logging in, and initiating a screenshot sharing request on a graphic window corresponding to the Android application picture displayed on the Linux end;
s5, starting a Linux screenshot tool, and monitoring screenshot related signals or clipboard data change signals in a graphic window displaying an Android application picture at a Linux end;
s6, selecting a screenshot area by a user, carrying out screenshot when the Linux screenshot tool monitors a screenshot related signal or a clipboard data change signal, and saving an obtained screenshot file as a clipboard screenshot or a local screenshot;
s7, the Linux window program sends the software package name and the screenshot path to the Android event service program through the socket;
s8, connecting the Linux end with the Android end event service program according to the identity of the client, and sending the software package name and the screenshot storage path corresponding to the Android system to the Android end event service program after the connection is successful;
and S9, after receiving the software package name and the screenshot preservation path, the Android end event service program starts to send system broadcast messages, after receiving the system broadcast messages, the Android system performs matching according to the software package name in the system broadcast messages, the matched Android application starts a sharing process according to the screenshot preservation path in the system broadcast messages, and a sharing interface is called to share.
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