//假設 這是引導頁面最后一個界面public class MainActivity extends Activity { private TextView count_time; private MyCountDownTimer myCountDownTimer; @Override protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.activity_main);  count_time= (TextView) findViewById(R.id.count_time);  //new對象，傳入要停留的時間  myCountDownTimer=new MyCountDownTimer(5100,1000);  //開始倒計時  myCountDownTimer.start(); } //自定義一個類繼承自CountDownTimer，實現多少秒后的邏輯 class MyCountDownTimer extends CountDownTimer{  /**   *   * @param millisInFuture   * 表示以毫秒為單位 倒計時的總數   *   * 例如 millisInFuture=1000 表示1秒   *   * @param countDownInterval   * 表示 間隔 多少微秒 調用一次 onTick 方法   *   * 例如: countDownInterval =1000 ; 表示每1000毫秒調用一次onTick()   *   */  public MyCountDownTimer(long millisInFuture, long countDownInterval) {   super(millisInFuture, countDownInterval);  }  @Override  public void onTick(long millisUntilFinished) {   count_time.setText(millisUntilFinished/1000+"s");  }  @Override  public void onFinish() {   //停止倒計時   myCountDownTimer.cancel();   //實現頁面跳轉   startActivity(new Intent(MainActivity.this,SecondActivity.class));  } }}

//引導頁最后一個界面的.xml布局<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" > <TextView  android:id="@+id/count_time"  android:background="@drawable/bg"  android:textColor="@android:color/holo_blue_bright"  android:layout_width="60dp"  android:layout_height="30dp"  android:layout_centerInParent="true"/></RelativeLayout>

//這是跳轉后的界面public class SecondActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.activity_second); }}

//引導頁跳轉后界面的.xml布局<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" > <TextView  android:textColor="@android:color/holo_blue_bright"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:layout_centerInParent="true"  android:text="這是跳轉后的頁面"  android:textSize="30sp"  android:id="@+id/time" /></RelativeLayout>