Android Studio 生成自定义jar包的步骤详解

dependencies {
  compile fileTree(dir: 'libs', include: ['*.jar'])
  androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
    exclude group: 'com.android.support', module: 'support-annotations'
  })
  compile 'com.android.support:appcompat-v7:25.3.1'
  compile 'com.android.support.constraint:constraint-layout:1.0.0-beta4'
  testCompile 'junit:junit:4.12'
  compile project(':testlibrary')
}

public class TestShow {
  public void show(Context context, String msg, TextView textView) {
    textView.setText(msg);
    Toast.makeText(context, msg, Toast.LENGTH_SHORT).show();
  }
  public void test() {
    System.out.println("测试信息，test()方法");
  }
}

@Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    show_tv = ((TextView) findViewById(R.id.show_tv));
    ((Button) findViewById(R.id.btn)).setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v) {
        new TestShow().show(MainActivity.this, "调用jar包中的show方法", show_tv);
      }
    });
  }

def SDK_BASENAME = "TestSdk";
def SDK_VERSION = "_V1.0";
def sdkDestinationPath = "build";
def zipFile = file('build/intermediates/bundles/default/classes.jar')
task deleteBuild(type: Delete) {
  delete sdkDestinationPath + SDK_BASENAME + SDK_VERSION + ".jar"
}
task makeJar(type: Jar) {
  from zipTree(zipFile)
  from fileTree(dir: 'src/main',includes: ['assets/**'])//将assets目录打入jar包
  baseName = SDK_BASENAME + SDK_VERSION
  destinationDir = file(sdkDestinationPath)
}
makeJar.dependsOn(deleteBuild, build)