安卓生成主页欢迎页

public class MainActivity extends AppCompatActivity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button btn1 = (Button) findViewById(R.id.leah1);

        /*
        Timer timer = new Timer();
        TimerTask task = new TimerTask() {
            @Override
            public void run() {
                Intent intent = new Intent();
                intent.setClass(MainActivity.this, ForwardTarget.class);
                startActivity(intent);
            }
        };
        timer.schedule(task, 1000 * 2);
        设置主页延时进入代码。
        */
        btn1.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setClass(MainActivity.this, Data.class);
                startActivity(intent);
                //finish();//停止当前的Activity,如果不写,则按返回键会跳转回原来的Activity
            }
        });
    }
}