Android实现闪屏页和右上角的倒计时跳转实例代码

package com.example.shanping;
import java.lang.ref.WeakReference;
import com.example.shanping.MyActivity.MyCountDownTimer;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.os.Handler;
import android.os.Message;
import android.app.Activity;
import android.content.Intent;
import android.util.Log;
import android.view.Menu;
import android.widget.TextView;
public class MainActivity extends Activity {
private MyCountDownTimer mc; 
private TextView tv;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tv = (TextView) findViewById(R.id.textView1); 
mc = new MyCountDownTimer(3000, 1000); 
mc.start();
handler.postDelayed(new Runnable() {
@Override
public void run() {
Intent intent=new Intent(MainActivity.this,MyActivity.class);
startActivity(intent);
}
}, 3000);
}
private Handler handler=new Handler();
/** 
* 继承 CountDownTimer 防范 
* 
* 重写 父类的方法 onTick() 、 onFinish() 
*/
class MyCountDownTimer extends CountDownTimer { 
/** 
* 
* @param millisInFuture 
* 表示以毫秒为单位 倒计时的总数 
* 
* 例如 millisInFuture=1000 表示1秒 
* 
* @param countDownInterval 
* 表示 间隔 多少微秒 调用一次 onTick 方法 
* 
* 例如: countDownInterval =1000 ; 表示每1000毫秒调用一次onTick() 
* 
*/
public MyCountDownTimer(long millisInFuture, long countDownInterval) { 
super(millisInFuture, countDownInterval); 
} 
public void onFinish() { 
tv.setText("正在跳转"); 
} 
public void onTick(long millisUntilFinished) { 
tv.setText("倒计时(" + millisUntilFinished / 1000 + ")"); 
} 
}
}

package com.mstar;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
public class ActSplashScreen extends Activity{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.shan);
// 闪屏的核心代码
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
Intent intent = new Intent(ActSplashScreen.this,DialogTest.class); //从启动动画ui跳转到主ui
startActivity(intent);
ActSplashScreen.this.finish(); // 结束启动动画界面
}
}, 3000); //启动动画持续3秒钟
}
}

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