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>