Android Development note--hello World and directory structure

Original: Android Development note--hello World and directory structure

Every touch of a new thing has an example of Hello World.

1. New Project

2. Configuring the AVD

AVD does not want to create a new one if it cannot be created

Run the SDK Manager update

3. Then you can run it.

The first boot is 1 minutes, don't turn it off.

4. Add code

5. Then the operation isOKthe

Directory structure

1. SRC-for placing the source program

2. Gen-automatically generates R.java files for referencing resource files (i.e., data in res directory)

3, assets-for placing the original file, Android will not do any of the files in this directory, which is different from the Res directory

4, res/drawable-for the placement of pictures and other resources; res/layout-XML file for placement of layouts; res/values-for placing some constant data

5. Androidmanifest.xml-android program manifest file, equivalent to configuration file, configure application name, icon, Activity, Service, receiver, etc.

Android Development note--hello World and directory structure