Android Activity 活动窗口 设置及跳转 代码实现

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
//        setContentView(R.layout.activity_my);						//初始化时组活动窗口

          findViewById(R.id.buttonmy01).setOnClickListener(new OnClickListener() {      //单击按钮事件监听
              @Override
              public void onClick(View v) {
                  startActivity(new Intent(MainActivity.this,MyActivity.class));        //启动新的Activity活动窗口
              }
          });
    }