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service 四大组件之一，开启后可以一直运行在系统后台。至于其他概念性问题我就不说了，直接操作把 具体内容在代码注释中有
先看下效果图
上布局文件把
1 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 2 xmlns:tools="http://schemas.android.com/tools" 3 android:layout_width="match_parent" 4 android:layout_height="match_parent" 5 android:orientation="vertical" 6 tools:context=".MainActivity" > 7 8 <TextView 9 android:id="@+id/textView1" 10 android:layout_width="wrap_content" 11 android:layout_height="wrap_content" 12 android:text="@string/hello_world" /> 13 14 <Button 15 android:id="@+id/button1" 16 android:layout_width="wrap_content" 17 android:layout_height="wrap_content" 18 android:text="启动服务" 19 android:onClick="startService" /> 20 21 <Button 22 android:id="@+id/button2" 23 android:layout_width="wrap_content" 24 android:layout_height="wrap_content" 25 android:text="停止服务" 26 android:onClick="stopService" /> 27 28 <Button 29 android:id="@+id/button3" 30 android:layout_width="wrap_content" 31 android:layout_height="wrap_content" 32 android:text="绑定服务" 33 android:onClick="bindService" /> 34 35 <Button 36 android:id="@+id/button4" 37 android:layout_width="wrap_content" 38 android:layout_height="wrap_content" 39 android:text="解绑服务" 40 android:onClick="unbindService" /> 41 42 </LinearLayout>
重点看java代码把
package com.zw.service;
import android.os.Bundle;
import android.os.IBinder;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.view.Menu;
import android.view.View;
public class MainActivity extends Activity {
private Intent intent;
private MyServiceCon conn = new MyServiceCon();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
intent = new Intent("com.zw.service.MyService");
// Intent intent = new Intent(this,MyService.class);
}
public void startService(View v){
startService(intent);
}
public void stopService(View v){
stopService(intent);
}
//绑定服务
public void bindService(View v){
bindService(intent, conn, Context.BIND_AUTO_CREATE);
}
public void unbindService(View v){
unbindService(conn);
}
//
class MyServiceCon implements ServiceConnection{
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
//绑定完成后回调方法（Activity） 和 Service 的连接
}
@Override
public void onServiceDisconnected(ComponentName name) {
//服务解绑就调
}
}
}
service类
package com.zw.service;
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
public class MyService extends Service {
@Override
public void onCreate() {
// TODO Auto-generated method stub
super.onCreate();
System.out.println("MyService-----onCreate");
}
@Override
public void onStart(Intent intent, int startId) {
// TODO Auto-generated method stub
super.onStart(intent, startId);
System.out.println("MyService-----onStart");
}
@Override
public IBinder onBind(Intent arg0) {
System.out.println("MyService-----onBind");
return null;
}
@Override
public boolean onUnbind(Intent intent) {
System.out.println("MyService-----onUnbind");
return super.onUnbind(intent);
}
@Override
public void onDestroy() {
// TODO Auto-generated method stub
System.out.println("MyService-----onDestroy");
super.onDestroy();
}
}
接下来要说的是在清单文件中配置service
<service android:name="com.zw.service.MyService"> <intent-filter > <action android:name="com.zw.service.MyService"/> </intent-filter> </service>
好了 效果图自己运行看看把
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原文地址：http://www.cnblogs.com/Striver-zw/p/4191460.html
