Notes Android development Environment configuration and HelloWorld program

Android Development requires the following four tools:

1.JDK

2.Eclipse

3.Android SDK

4.ADT

Specific features:

1.JDK. The JDK is the Java Development Kit (Java SDK), which includes the Java Runtime Environment, the base Class library, and the Java tools, which are the basis for running Java.

2.Eclipse. Eclipse is a software tool for developing Java programs.

3.Android SDK. The SDK is Software Development Kit ( Software Development Kit). ANDROIDSDK refers to the Android -specific software development Kit .

4. ADT. ADT, the Android development tools (Android development tool), is a plugin for developing Android apps in Eclipse.

Development environment Building and Hello World tutorial:

Click to open link

How to connect a phone test:

Click to open link

The first Hello World program:

1.file->new->project->android->android Application Project

2. Final phone running interface

3.project Explorer

A. src source file

B Gen ADT automatically generated Java files, programmers must not modify

C Android 4.2.2+android Private Libraries jar file

D Assets resource files, pictures, audio, videos, etc.

E bin binary files, compiled files

F Libs Third-party jar files, which refer to third-party code

G Res is also a resource file, unlike assets, where the generated files have IDs

Summarize:

1. The previous development program used the app inventor and did not develop an Android program with Eclipse. There is no need for detailed configuration of the environment in app inventor, but there are not many features.

2. Your own mobile phone system is Android 4.2.2.

3. Always feel that the app inventor development is simple, but it brings the workload has been neglected.

4. It has always been felt that Eclipse development app is difficult, but as long as the hands-on practice, there will be a great harvest.