java - 在 Android 中，如何让 Activity 在跳到下一个 Activity 之前等待？

Question

我想创建一个在启动应用程序时打开的 Activity ，等待一段时间并跳转到下一个 Activity ，而无需用户按任何操作。

这是我的代码:

public class MainActivity extends Activity {

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Thread thread = new Thread();
    thread.start();
}

public class waitSeconds extends Thread {

    public void run() {
        Log.i("MyActivity", "MyClass");
        try {
            wait(300);
            Intent intent = new Intent(MainActivity.this, main_window.class);
            startActivity(intent);

        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}

因为它似乎永远不会进入“run”方法。

我该怎么做？

Answer 1

将其包含在您的 Activity 中:

 public class MainActivity extends Activity{
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    SplashHandler handler=new SplashHandler();
    Message msg = new Message();
    msg.what = 0;
    handler.sendMessageDelayed(msg, 3000);

}

private class SplashHandler extends Handler {

            public void handleMessage(Message msg)
              {
                switch (msg.what)
                {
                default:
                case 0:
                  super.handleMessage(msg);

                  Intent intent = new Intent(MainActivity.this,main_window.class);
                  startActivity(intent);
                  MainActivity.this.finish();
                }
              }
        }