Android 实现广告欢迎界面(倒计时)

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >
 <alpha
  android:duration="1000"
  android:fromAlpha="0.0"
  android:toAlpha="1.0" />
 <scale
  android:duration="800"
  android:fromXScale="1.5"
  android:fromYScale="1.5"
  android:pivotX="50%"
  android:pivotY="50%"
  android:toXScale="1.0"
  android:toYScale="1.0" />
</set>

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:background="@drawable/page24"
 tools:context="${relativePackage}.${activityClass}" >
 <LinearLayout
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_gravity="right"
  android:orientation="horizontal" >
  <TextView
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:layout_gravity="right"
   android:text="广告倒计时："
   android:textColor="#ffffff"
   android:textSize="20sp" />
  <TextView
   android:id="@+id/textView"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:layout_gravity="right"
   android:text="5"
   android:textColor="#ffffff"
   android:textSize="20sp" />
  <TextView
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:layout_gravity="right"
   android:text="s"
   android:textColor="#ffffff"
   android:textSize="20sp" />
 </LinearLayout>
</FrameLayout>

/**
 * 
 * 1.声明界面
 * 2.定义变量
 * 3.调用类Animation
 * 4.写方法让它动起来
 * @author Rain
 *
 */
public class WelcomeActivity extends Activity{
  // 声明控件对象
 private TextView textView;
 //声明时间有多少;
 private int count = 5;
 private Animation animation;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  // 下面的话就是去除标题的方法
  requestWindowFeature(Window.FEATURE_NO_TITLE);
  setContentView(R.layout.activity_welcome);
  // 初始化控件对象textView
  textView = (TextView) findViewById(R.id.textView);
  animation = AnimationUtils.loadAnimation(this, R.anim.animation_text);
  handler.sendEmptyMessageDelayed(0, 1000);
 }
 //咱在写一个计算Welcome界面的广告时间结束后进入主界面的方法
 private int getCount() {
  count--;
  if (count == 0) {
   Intent intent = new Intent(this, MainActivity.class);
   startActivity(intent);
   finish();
  }
  return count;
 }
 //进行一个消息的处理
 @SuppressLint("HandlerLeak")
 private Handler handler = new Handler() {
  public void handleMessage(android.os.Message msg) {
   if (msg.what == 0) {
    textView.setText(getCount()+"");
    handler.sendEmptyMessageDelayed(0, 1000);
    animation.reset();
    textView.startAnimation(animation);
   }
  };
 };
}