The first program in Android, hello World

Source: Internet
Author: User

Create a project in eclipse and select Android-android Project

 

 

 

Next, continue

 

Explain

  • Package name: This programmer should be familiar with it. Like namespace, everything you define will not be renamed with other packages in one package.
  • Create activity: In the Android system, every program is connected by the running of each activity. This is equivalent to creating the program entry activity, which is equivalent to the main () function.
  • Min SDK version: The minimum SDK version is supported. 2 corresponds to 1.1, 3 corresponds to 1.5, and 4 corresponds to 1.6.

 

 

After the project is created, there should be the following files:

 

 

 

Then select Run as Android Application. Everything will be fine.

 

Android simulator requires 1 ~ 2 minutes. At the beginning, only "android" may appear. You just have to wait.

 

At the beginning:

 

 

After normal operation:

 

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