Android“计时器”

1.Chronometer 布局组件
2. android:format=“倒计时：%s”；时间格式

布局：

<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".TimeActivity" >

    <Chronometer
        android:id="@+id/chronometer1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="190dp"
        android:format="倒计时：%s"
        android:text="Chronometer" />

</RelativeLayout>

方法

package com.wlw.grzn.e811;

import android.os.Bundle;
import android.os.SystemClock;
import android.app.Activity;
import android.view.Menu;
import android.view.WindowManager;
import android.widget.Chronometer;

public class TimeActivity extends Activity {
    
    

	 Chronometer time;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
    
    
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_time);
        //现实全面		
		getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
				WindowManager.LayoutParams.FLAG_FULLSCREEN);
		
		time= (Chronometer) findViewById(R.id.chronometer1);		
		
		time.setBase(SystemClock.elapsedRealtime());
		
		time.setFormat("%s");
		
		time.start();
		
		time.setOnChronometerTickListener(new Chronometer.OnChronometerTickListener() {
    
    
			
			@Override
			public void onChronometerTick(Chronometer arg0) {
    
    
				// TODO Auto-generated method stub
				
				if (SystemClock.elapsedRealtime()-time.getBase()>=60000) {
    
    
					time.stop();
				}
				
			}
		}) ;
		
	}

}