Android cainiao study notes 16 ---- Android project package installation process (Run as Android Application), androidapplication

Android cainiao study notes 16 ---- Android project package installation process (Run as Android Application), androidapplication

Right-click the project name and Run as Android Appication,Android project package and Installation Process:

1.generate The. APK file:

1) Compile the. java file in the source code to generate the. class file.

2) generate all. class files into the classes. dex file through dex. bat.

3) generate the resource index table file resources. ap _

4) convert the configuration file Manifest. xml of the project to a binary file.

5) use debug. keystore to package and sign the entire project. If the environment variable ANDROID_SDK_HOME is configured to store the simulator, debug. keystore will be in the. android directory of this directory. If no configuration is available, it is generally stored in the C: \ Users \ USERNAME \. android directory.

2.load the generated .apk file to the simulator:

By default, it is stored in/data/local/tmp.

3. Install the apk file loaded to the simulator.:

1) Cut the/data/local/tmp/xxx.apk file to the/data/app/directory, and rename it to xxx-1.apk1_xxx-2.apk.

2) create a folder with the package name under the/data/folder to store the data of the current program

3) Add a record to the/data/system/packages. xml and/data/system/packages. list files to facilitate system management of the application.

 

View specific process, You can create a project and Run as Android Application to view it, as shown below:

Create an android project named 011launch_process:

 

Note that there is only one res directory under bin, and res is empty at this time.

Open the File Explorer view: (window-> show view-> other)

Note: The/data/local/tmp directory is empty.

 

Right-click the project name and Run as Android Application:

 

At this time, the bin directory contains many more files.

In addition, if you observe the/data/local/tmp directory, you will find an extra file, and then it disappears.

 

Then enter/data/app/, and you will find that there is an extra file in this directory, and it will always exist.

 

In addition, the/data/directory contains a directory with the same name as the project package.

 

Export/data/system/packages. xml and/data/system/packages. list, and view the content:

The following package nodes are added to packages. xml:

 1 <package name="cn.csc.launch_process" codePath="/data/app/cn.csc.launch_process-1.apk" nativeLibraryPath="/data/data/cn.csc.launch_process/lib" flags="0" ft="14e6b736328" it="14e6b737636" ut="14e6b737636" version="1" userId="10049"> 2  3 <sigs count="1"> 4  5 <cert index="1" /> 6  7 </sigs> 8  9 <perms />10 11 </package>

In packages. list, the following row is added:

cn.csc.launch_process 10049 1 /data/data/cn.csc.launch_process

 

The above is the complete process of running as Android Application.