What Android is about activity and common ADB commands as well as the Android project structure is understood

Summarize some of the things you learned about Android before

One: AndroidUsed in ADBCommand (ADB android Debug Bridge)

1.adb devices view the emulator device and reconnect.

2.adb kill-server turn off all simulator devices.

3.adb install-r URL (Installation path), installation,-R for replacement.

4. adb uninstall URL(unload path), uninstall.

5.adb push< local file >< remote path > upload file.

6.adb Pull < remote path >< local path > download file.

Two: AndroidProject structure

1.SRC Catalog: Java source files for applications

2.gen Catalog: The ADT plugin helps us generate the files.

3.assets Directory: General storage of large resource files.

4.bin directory: Compiled files.

5.libs Catalog: Deraicoux.

6.res Directory: Resource file.

7.res Directory: Resource files (especially when placing picture files, names can only be numbers and lowercase letters, otherwise it will make the program error)

Three: What is activity?

Android is divided into four components: the Activity user interaction component, the service background services component, the Broadcastreceiver broadcast notification component, and the ContentProvider data Provider component. Activity is a standalone, one of the Android application components that can interact with the user, it acts as an interface framework for the application, and is responsible for dynamically loading various user interface views, implementing message delivery and so on.

What Android is about activity and common ADB commands as well as the Android project structure is understood