1:MyService

public class MyService  extends IntentService{
AlarmManager alarmManager = null;
PendingIntent alarmIntent = null; public MyService(){
super("MyService");
} public MyService(String name){
super(name);
} @Override
public IBinder onBind(Intent arg0) {
return null;
} @Override
public void onCreate() {
super.onCreate();
alarmManager = (AlarmManager)this.getSystemService(Context.ALARM_SERVICE);
Intent intentTo = new Intent("com.yan.receive.MY_ALARM");
alarmIntent = PendingIntent.getBroadcast(this, 0, intentTo, 0);
} @Override
protected void onHandleIntent(Intent arg0) {
//final Context context = this.getApplicationContext(); int alarmType = AlarmManager.ELAPSED_REALTIME_WAKEUP;
long triggerAtMillis = SystemClock.elapsedRealtime()+(5*1000);//执行间隔时间5s
long intervalMillis = 2*1000;
alarmManager.setInexactRepeating(alarmType, triggerAtMillis, intervalMillis, alarmIntent); System.out.println("============执行============");
}
}

2:MyAlarmReceiver

public class MyAlarmReceiver  extends BroadcastReceiver {

    @Override
public void onReceive(Context context, Intent arg1) {
Intent startIntent = new Intent(context, MyService.class);
context.startService(startIntent);
} }

3:MainActivity

public class MainActivity extends ActionBarActivity {

    @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main); if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment()).commit();
}
} @Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
} @Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
} /**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
Button btnStart;
Button btnClose;
AlarmManager alarmManager = null;
PendingIntent alarmIntent = null; public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container,false); btnStart = (Button)rootView.findViewById(R.id.btnStart);
btnClose = (Button)rootView.findViewById(R.id.btnClose); btnStart.setOnClickListener(btnClickLIstener());
btnClose.setOnClickListener(btnClickLIstener()); return rootView;
} OnClickListener btnClickLIstener(){
return new OnClickListener(){
@Override
public void onClick(View arg0) {
switch(arg0.getId()){
case R.id.btnStart:
// 启动服务
Intent myIntent = new Intent(getActivity(), MyService.class);
getActivity().startService(myIntent);
System.out.println("=========启动服务");
break;
case R.id.btnClose:
alarmManager = (AlarmManager)getActivity().getSystemService(Context.ALARM_SERVICE);
Intent intentTo = new Intent("com.yan.receive.MY_ALARM");
alarmIntent = PendingIntent.getBroadcast(getActivity(), 0, intentTo, 0);
if(null != alarmIntent){
alarmManager.cancel(alarmIntent);
}
System.out.println("=========停止Alarm");
getActivity().stopService(new Intent(getActivity(), MyService.class));
System.out.println("=========停止服务");
break;
}
}
};
}
}
}

4:activity_main.xml

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.intentservice.MainActivity"
tools:ignore="MergeRootFrame" />

5:fragment_main.xml

<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="com.example.intentservice.MainActivity$PlaceholderFragment" > <Button
android:id="@+id/btnStart"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="开启任务" /> <Button
android:layout_below="@id/btnStart"
android:id="@+id/btnClose"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="关闭任务" />
</RelativeLayout>

6:AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.intentservice"
android:versionCode="1"
android:versionName="1.0" > <uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" /> <application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" > <receiver
android:name="com.yan.receive.MyAlarmReceiver"
android:enabled="true"
android:exported="false" >
<intent-filter>
<action android:name="com.yan.receive.MY_ALARM" />
</intent-filter>
</receiver> <service
android:name="com.yan.service.MyService"
android:enabled="true"
android:exported="false" /> <activity
android:name="com.example.intentservice.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application> </manifest>

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