CN105204881A - Method and device for operating J2me application program on Android system - Google Patents
Method and device for operating J2me application program on Android system Download PDFInfo
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- CN105204881A CN105204881A CN201410295046.0A CN201410295046A CN105204881A CN 105204881 A CN105204881 A CN 105204881A CN 201410295046 A CN201410295046 A CN 201410295046A CN 105204881 A CN105204881 A CN 105204881A
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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
- G06F9/445—Program loading or initiating
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Abstract
The invention provides a method and device for operating a J2me application program on the Android system. The method comprises the steps that after an Android application is started on the Android system, a J2me virtual machine is started to operate the corresponding J2me application program; when the J2me application program needs to call a grafport, a Java local interface of the Android application is called through the J2me virtual machine; a graph application program interface of the of Android application is called through the Java local interface, a graph in the J2me application program is drawn and rendered into a screen window provided by the Android application, and thus the J2me application can normally operate on the Android system.
Description
Technical field
The present invention relates to field of computer technology, particularly relate to a kind of method and apparatus running J2me (Java2PlatformMicroEdition, Java2 Platform MicroEdition) and apply in Android (Android) system.
Background technology
To be SUN company run identical Java application and being directed to of design is embedded, consumer electronics product and the development platform released to solve to J2me platform on different mobile terminal, such as J2me can be Set Top Box, mobile phone and PDA (PersonalDigitalAssistant), palm PC) and so on the Java language platform that provides of embedded consumer-elcetronics devices.
Along with the development of Intelligent set top box, progressively replacing Linux Set Top Box, the J2me originally run on linux game urgent need operates in Android Set Top Box in the past.
But, current network there are thousands of the game run in traditional Linux Set Top Box, these game are all that J2me develops based on QT (a kind of cross-platform C++ graphical user interface application program development framework) graph API, owing to lacking the assembly that QT accelerates in Android Set Top Box, if continue to use original QT graph API, the speed of running game in Android Set Top Box can be caused slowly, thus Consumer's Experience to be affected.
Summary of the invention
In view of above-mentioned technical matters, the invention provides a kind of method and apparatus running J2me application program in android system overcoming above-mentioned technical matters or solve the problems of the technologies described above at least in part, realize J2me and be applied in android system and normally run.
According to one aspect of the present invention, provide a kind of method running J2me application program in android system, comprising: start Android application in android system after, start J2me virtual machine and run corresponding J2me application program; When described J2me application program needs to call grafport, by the Java local interface of Android application described in described J2me virtual machine call; Call by described Java local interface the graph API that described Android applies, and the graphic plotting in described J2me application program is rendered into described Android and applies in the screen window provided.
Alternatively, described method also comprises: when the download command downloading described Android application being detected, download the installation kit that described Android applies; After the download is complete, described android system is installed described Android and applies, and start described Android and apply.
Alternatively, the described graph API being called described Android application by described Java local interface, and the graphic plotting in described J2me application program is rendered into the step that described Android applies in the screen window provided and comprises: call by described Java local interface the Java layer that described Android applies and carry out graphic plotting, and be stored in default graphic buffer; After drafting terminates, call and refresh Refresh interface, notice renderer Renderer plays up thread and refreshes described screen window; Thread is played up after the request receiving refreshing, by the graph rendering in default graphic buffer in open GL OpenGL texture at described Renderer; Figure in OpenGL texture is presented in described screen window, the picture when J2me application program finally seen to form user is run.
Alternatively, described Android applies the screen window provided is OpenGL view window GLSurfaceview.
Alternatively, described method also comprises: when described J2me application program is run, receive key-press event; Send to described Android to apply the described key-press event received, notify described J2me virtual machine stored in queue; Obtain described key-press event by described J2me virtual machine, and send to described J2me application program, carry out key-press event process by described J2me application program.
According to another aspect of the present invention, additionally provide a kind of equipment running J2me application program in android system, comprise: start module, after start Android application in android system, start J2me virtual machine and run corresponding J2me application program; Interface interchange module, for when described J2me application program needs to call grafport, by the Java local interface of Android application described in described J2me virtual machine call; Pattern process module, for being called the graph API that described Android applies by described Java local interface, and is rendered into described Android applies the graphic plotting in described J2me application program in the screen window provided.
Alternatively, described equipment also comprises: download detection module, for detecting the download command downloading described Android application; Download module, for when the download command downloading described Android application being detected, downloads the installation kit that described Android applies; Installation module, for after the download is complete, android system is installed the installation kit that described Android applies, and starts described Android and apply.
Alternatively, the Java layer that described pattern process module is further used for being called by described Java local interface described Android application carries out graphic plotting, and is stored in default graphic buffer; After drafting terminates, described J2me application call refreshes Refresh interface, and notice renderer Renderer plays up thread and refreshes described screen window; Described Renderer plays up thread after the request receiving refreshing, by the graph rendering in default graphic buffer in open GL OpenGL texture; Figure in OpenGL texture is presented in described screen window, the picture when J2me application program finally seen to form user is run.
Alternatively, described Android applies the screen window provided is OpenGL view window GLSurfaceview.
Alternatively, described equipment also comprises: key-press event receiver module, for when described J2me application program is run, receives key-press event; Key-press event sending module, for sending to described Android to apply the described key-press event received, notifies described J2me virtual machine stored in queue; Key-press event processing module, for obtaining described key-press event by described J2me virtual machine, and sending to described J2me application program, carrying out key-press event process by described J2me application program.
The invention has the beneficial effects as follows: in an embodiment of the present invention, Android application start J2me virtual machine runs corresponding J2me application program, J2me application program operates on J2me virtual machine, the graphic interface of amendment J2me virtual machine call, when the interface of J2me application call figure, call the JNI (the local calling interface of Java) of Android application, the Java layer being called back J2me application program by JNI carries out drawing and being rendered on screen window, thus realizes J2me and be applied in android system and normally run.
Accompanying drawing explanation
Fig. 1 represents one of process flow diagram of the method running J2me application program in embodiments of the invention in android system;
Fig. 2 represents the schematic diagram of J2me application program running environment in embodiments of the invention;
Fig. 3 represents the sequential chart of graphic plotting in embodiments of the invention;
Fig. 4 represents the process flow diagram two of the method running J2me application program in embodiments of the invention in android system;
Fig. 5 represents that embodiments of the invention run the process flow diagram two of the method for J2me application program in android system;
Fig. 6 represents the process flow diagram of J2me game running in embodiments of the invention; And
Fig. 7 represents the block diagram of the equipment running J2me application program in embodiments of the invention in android system.
Embodiment
Below with reference to accompanying drawings exemplary embodiment of the present disclosure is described in more detail.Although show exemplary embodiment of the present disclosure in accompanying drawing, however should be appreciated that can realize the disclosure in a variety of manners and not should limit by the embodiment set forth here.On the contrary, provide these embodiments to be in order to more thoroughly the disclosure can be understood, and complete for the scope of the present disclosure can be conveyed to those skilled in the art.
As shown in Figure 1, for running the method for J2me application program in embodiments of the invention in android system, comprise the steps:
Step S101, in android system, start Android application after, start J2me virtual machine and run corresponding J2me application program.
Wherein, Android (Android) system is the electronic equipment operating system of an open source code based on Linux, and wherein electronic equipment can be the equipment such as Set Top Box, mobile phone, panel computer.
Android application (APP) can be the application program run on the equipment such as Set Top Box, mobile phone, panel computer of android system, and such as Android application can be game application.At embodiments of the invention, Android application may be used for: the display of (1) figure; (2) open thread and start J2me virtual machine; (3) key-press event reception and issue J2me virtual machine; (4) provide graph API (API) for J2me virtual machine; (4) receive WatchService (providing the standard interface to file monitor inside WatchService) the transparent transmission parameter of coming and deposit in database, this Android application is the bridge that android system and J2me virtual machine are linked up.
J2me virtual machine is a kind of Java Virtual Machine (JVM, JavaVirtualMachine), and Java Virtual Machine is a kind of specification for computing equipment.
Step S103, when J2me application program needs to call graph API, by J2me virtual machine call Android apply Java local interface.
The local calling interface (JavaNativeInterface, JNI) of Java, from Java1.1, JNI standard becomes a part for Java platform, and the code that JNI standard allows Java code and other language to write carries out alternately.
Step S105, to be called the graph API of Android application by JNI, and the graphic plotting in J2me application program is rendered into Android and applies in the screen window provided.
The graph API of Android application can be called by LibJavaprocess.so, parameter LibJavaprocess.so is provided by product line, be responsible for the parsing of bytecode in J2me application program, the data transmitted be converted to interface data and control graphic plotting in J2me application program.
In an embodiment of the present invention, can keep J2me application program and J2me virtual machine constant, only original QT graph API is modified, in Fig. 2, J2ME virtual machine applies by calling Android the JNI provided, the graph API of Android application is called again by JNI, by the graphic plotting in J2me application program on screen window (also can be described as screen container), this screen window is applied by Android and is provided.
As shown in Figure 3, be the sequential chart of graphic plotting in embodiments of the invention, this graphic plotting flow process comprises:
Step S301, J2me application call JNI start to draw;
Step S303, notice Renderer play up thread and upgrade screen.
Step S305, by graph rendering in OpenGL texture;
Step S307, figure is updated to screen window.Alternatively, Android applies the screen window provided is OpenGL view window (GLSurfaceview).
Particularly, J2me application program is called by JNI the Java layer stating Android application and is carried out graphic plotting, and is stored in default graphic buffer; After drafting terminates, J2me application call Refresh interface, notice Renderer plays up thread redraw window.Renderer plays up thread after the request receiving refreshing, by the graph rendering in default graphic buffer in OpenGL texture, finally the figure in texture is presented in screen window, the picture when J2me application program finally seen to form user is run.
In an embodiment of the present invention, based on the function of the graph API of QT before API (application programming interface) realization of Android application, use the API that Android applies, first be exactly establishment Android application, it is GLSurfaceview that this Android applies the view used, three thread: UIThread (user-interface thread) will be created in this Android applies, GLRenderThread (GL plays up thread) and appThread, wherein UIThread is the content of Android framework, obtain button by UIThread to suspend, the button such as to exit, stored in notifying appThread in queue after receiving button, get button in appThread to queue and pass to J2me virtual machine by JNI, complete key-press event transmission.GLRenderThread is the thread that GLSurfaceview plays up for GL, it has periodic refreshing and dirty refreshing two kinds of patterns, such as its refresh mode is set to dirty refreshing, when refresh interface is called in drawing end, notice Renderer (renderer) refreshes.AppThread is the JVM process of former Linux platform, is responsible for resolving bytecode and controlling to draw.
As shown in Figure 4, for running the process flow diagram two of the method for J2me application program in embodiments of the invention in android system, with the method shown in Fig. 1 unlike, also comprised before step S101 in Fig. 4:
Step S107, when detect download Android application download command time, download Android application installation kit;
Step S109, after the download is complete, android system is installed and starts Android application.
Particularly, download command is detected by the WatchService (WatchService is used for Monitoring Files system variation) of Java, this WatchService is started by android system, when download command being detected, download and install and wrap and start Android application, Android application start J2me virtual machine runs corresponding J2me application program, J2me application program operates on J2me virtual machine, the graphic interface of amendment J2me virtual machine call, when the interface of J2me application call figure, call the JNI of Android application, the Java layer being called back J2me application program by JNI carries out drawing and being rendered on screen window.
As shown in Figure 5, be in embodiments of the invention J2me application program run process flow diagram three, with the method shown in Fig. 1 unlike, in Figure 5, after step slol, the method also comprises:
Step S111, reception key-press event;
Step S113, the key-press event received to be sent to Android to apply stored in queue, and notify J2me virtual machine;
Step S115, J2me virtual machine obtain key-press event, and send to J2me application program, carry out keystroke handling by J2me application program.
Understand embodiments of the invention for the ease of those skilled in the art, in android system, run the flow process of J2me game below in conjunction with Fig. 6 introduction, concrete steps are as follows:
Step S601, WatchService monitor download command;
Step S603, receive download command after, download games bag;
Such as be connected to by IPTV (IPTV) the web download game package that broadcasting and TV provide.
Step S605, downloaded after, install and start game device APP;
Game device APP is for providing the display of display window for playing and providing JNI, and namely game needs the graph API that uses.Installing and after starting game device APP, J2me game started with the form of a thread.
Step S607, startup J2me virtual machine;
Step S609, by J2me virtual machine resolve game package run J2me game, then enter step S611 and step S617;
Step S611, JNI by J2me virtual machine call game device APP;
Step S613, call the graph API of game device APP;
Step S615, J2me is played in graphic plotting and be rendered in the screen window that game device APP provides;
Step S617, reception key-press event;
Step S619, the key-press event received is sent to game device APP, notify J2me virtual machine stored in queue;
Step S621, by J2me virtual machine obtain key-press event;
Step S623, send to J2me to play key-press event, played by J2me and carry out key-press event process.
In flow process as shown in Figure 6, Java game and J2me virtual machine can remain unchanged, only original QT interface is modified, the illustraton of model of whole amendment as shown in Figure 2, exactly by JNI that J2me virtual machine call game device APP provides, called the figure API of game device APP again by JNI, by the graphic plotting in game on screen window, screen window is provided by game device APP.
As shown in Figure 7, for running the block diagram of the equipment of J2me application program in embodiments of the invention in android system, this equipment 700 comprises: start module 701, after start Android application in android system, starts J2me virtual machine and runs corresponding J2me application program;
Interface interchange module 703, for when described J2me application program needs to call grafport, by the JNI of Android application described in described J2me virtual machine call;
Pattern process module 705, for being called the graph API that described Android applies by described JNI, and is rendered into described Android applies the graphic plotting in described J2me application program in the screen window provided.
Alternatively, in another embodiment of the present invention, described equipment also comprises:
Download detection module, for detecting the download command downloading described Android application;
Download module, for when the download command downloading described Android application being detected, downloads the installation kit that described Android applies;
Installation module, for after the download is complete, android system is installed the installation kit that described Android applies, and starts described Android and apply.
Alternatively, in another embodiment of the present invention, the Java layer that described pattern process module 705 is further used for being called by described Java local interface described Android application carries out graphic plotting, and is stored in default graphic buffer; After drafting terminates, described J2me application call refreshes Refresh interface, and notice renderer Renderer plays up thread and refreshes described screen window; Described Renderer plays up thread after the request receiving refreshing, by the graph rendering in default graphic buffer in open GL OpenGL texture; Figure in texture is presented in described screen window, the picture when J2me application program finally seen to form user is run.
Alternatively, in another embodiment of the present invention, described Android applies the screen window provided is OpenGL view window GLSurfaceview.
Alternatively, in another embodiment of the present invention, described equipment also comprises:
Key-press event receiver module, for when described J2me application program is run, receives key-press event;
Key-press event sending module, for sending to described Android to apply the described key-press event received, notifies described J2me virtual machine stored in queue;
Key-press event processing module, for obtaining described key-press event by described J2me virtual machine, and sending to described J2me application program, carrying out key-press event process by described J2me application program.
Above-described is the preferred embodiment of the present invention; should be understood that the ordinary person for the art; can also make some improvements and modifications not departing under principle prerequisite of the present invention, these improvements and modifications are also in protection scope of the present invention.
Claims (10)
1. in android system, run a method for J2me application program, it is characterized in that, comprising:
After android system starts Android application, start J2me virtual machine and run corresponding J2me application program;
When described J2me application program needs to call grafport, by the Java local interface of Android application described in described J2me virtual machine call;
Call by described Java local interface the graph API that described Android applies, and the graphic plotting in described J2me application program is rendered into described Android and applies in the screen window provided.
2. method according to claim 1, is characterized in that, described method also comprises:
When the download command downloading described Android application being detected, download the installation kit that described Android applies;
After the download is complete, described android system is installed described Android and applies, and start described Android and apply.
3. method according to claim 1, it is characterized in that, describedly call by described Java local interface the graph API that described Android applies, and the graphic plotting in described J2me application program be rendered into the step that described Android applies in the screen window provided and comprise:
The Java layer being called described Android application by described Java local interface carries out graphic plotting, and is stored in default graphic buffer;
After drafting terminates, call and refresh Refresh interface, notice renderer Renderer plays up thread and refreshes described screen window;
Thread is played up after the request receiving refreshing, by the graph rendering in default graphic buffer in open GL OpenGL texture at described Renderer;
Figure in OpenGL texture is presented in described screen window, the picture when J2me application program finally seen to form user is run.
4. method according to claim 3, is characterized in that, the screen window that described Android applies to be provided is OpenGL view window GLSurfaceview.
5. the method according to any one of Claims 1 to 4, is characterized in that, described method also comprises:
When described J2me application program is run, receive key-press event;
Send to described Android to apply the described key-press event received, notify described J2me virtual machine stored in queue;
Obtain described key-press event by described J2me virtual machine, and send to described J2me application program, carry out key-press event process by described J2me application program.
6. in android system, run an equipment for J2me application program, it is characterized in that, comprising:
Start module, after start Android application in android system, start J2me virtual machine and run corresponding J2me application program;
Interface interchange module, for when described J2me application program needs to call grafport, by the Java local interface of Android application described in described J2me virtual machine call;
Pattern process module, for being called the graph API that described Android applies by described Java local interface, and is rendered into described Android applies the graphic plotting in described J2me application program in the screen window provided.
7. equipment according to claim 6, is characterized in that, described equipment also comprises:
Download detection module, for detecting the download command downloading described Android application;
Download module, for when the download command downloading described Android application being detected, downloads the installation kit that described Android applies;
Installation module, for after the download is complete, android system is installed the installation kit that described Android applies, and starts described Android and apply.
8. equipment according to claim 6, is characterized in that, the Java layer that described pattern process module is further used for being called by described Java local interface described Android application carries out graphic plotting, and is stored in default graphic buffer; After drafting terminates, call and refresh Refresh interface, notice renderer Renderer plays up thread and refreshes described screen window; Thread is played up after the request receiving refreshing, by the graph rendering in default graphic buffer in open GL OpenGL texture at described Renderer; Figure in OpenGL texture is presented in described screen window, the picture when J2me application program finally seen to form user is run.
9. equipment according to claim 8, is characterized in that, the screen window that described Android applies to be provided is OpenGL view window GLSurfaceview.
10. the equipment according to any one of claim 6 ~ 9, is characterized in that, described equipment also comprises:
Key-press event receiver module, for when described J2me application program is run, receives key-press event;
Key-press event sending module, for sending to described Android to apply the described key-press event received, notifies described J2me virtual machine stored in queue;
Key-press event processing module, for obtaining described key-press event by described J2me virtual machine, and sending to described J2me application program, carrying out key-press event process by described J2me application program.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410295046.0A CN105204881A (en) | 2014-06-25 | 2014-06-25 | Method and device for operating J2me application program on Android system |
| PCT/CN2014/094434 WO2015196756A1 (en) | 2014-06-25 | 2014-12-19 | Method and device for running applications |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410295046.0A CN105204881A (en) | 2014-06-25 | 2014-06-25 | Method and device for operating J2me application program on Android system |
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| CN201410295046.0A Pending CN105204881A (en) | 2014-06-25 | 2014-06-25 | Method and device for operating J2me application program on Android system |
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| WO (1) | WO2015196756A1 (en) |
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| CN110865894B (en) * | 2019-11-22 | 2023-09-22 | 腾讯科技（深圳）有限公司 | Method and device for controlling application program across terminals |
| WO2023065740A1 (en) * | 2021-10-21 | 2023-04-27 | 北京字节跳动网络技术有限公司 | Window display method and apparatus, device, and storage medium |
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Also Published As
| Publication number | Publication date |
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| WO2015196756A1 (en) | 2015-12-30 |
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Application publication date: 20151230 |