Android-Project directory structure

Androidmanifest.xml------The entire Android configuration file

<activity Android:name

　　　　

</intent-filter></activity>

The two lines of code in Intent-filter are very important,

<action android:name= "Android.intent.action.MAIN"/> and <category android:name= " Android.intent.category.LAUNCHER "/>

Indicates that helloworldactivity is the main activity of the project, click on the app icon on the phone, the first thing to start is this activity. Can be used as an app landing interface and the like;

Res folder-----An android resource file

1. drawable folders are placed in a picture file.
2. The price of the layout type placed in the Layouts folder
3. The values folder puts a bunch of string files

Android-Project directory structure