Android IntentService 与Alarm开启任务关闭任务

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>