我已经按照以下示例代码实现了Periodic后台服务。定期任务正确执行如果应用程序在第一次前景。如果，我关闭应用程序然后后台服务不起作用。
1）BootComplete的BroadcastReceiver服务
public class BootBroadcastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
// Launch the specified service when this message is received
Intent startServiceIntent = new Intent(context, MyTestService.class);
context.startService(startServiceIntent);
}
}
2）BroadcastReceiver启动服务
public class MyAlarmReceiver extends BroadcastReceiver {
public static final int REQUEST_CODE = 12345;
// Triggered by the Alarm periodically (starts the service to run task)
@Override
public void onReceive(Context context, Intent intent) {
Intent i = new Intent(context, MyTestService.class);
i.putExtra("foo", "bar");
context.startService(i);
Toast.makeText(context, "Welcome --------1", Toast.LENGTH_LONG).show();
}
}
3）IntenetService类：执行我的后台任务
public class MyTestService extends IntentService {
// Must create a default constructor
public MyTestService() {
// Used to name the worker thread, important only for debugging.
super("test-service");
}
@Override
public void onCreate() {
super.onCreate(); // if you override onCreate(), make sure to call super().
}
@Override
protected void onHandleIntent(Intent intent) {
}
}
4）服务从活动开始
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
scheduleAlarm();
}
// Setup a recurring alarm every half hour
public void scheduleAlarm() {
// Construct an intent that will execute the AlarmReceiver
Intent intent = new Intent(getApplicationContext(), MyAlarmReceiver.class);
// Create a PendingIntent to be triggered when the alarm goes off
final PendingIntent pIntent = PendingIntent.getBroadcast(this, MyAlarmReceiver.REQUEST_CODE,
intent, PendingIntent.FLAG_UPDATE_CURRENT);
// Setup periodic alarm every 5 seconds
long firstMillis = System.currentTimeMillis(); // alarm is set right away
AlarmManager alarm = (AlarmManager) this.getSystemService(Context.ALARM_SERVICE);
// First parameter is the type: ELAPSED_REALTIME, ELAPSED_REALTIME_WAKEUP, RTC_WAKEUP
// Interval can be INTERVAL_FIFTEEN_MINUTES, INTERVAL_HALF_HOUR, INTERVAL_HOUR, INTERVAL_DAY
alarm.setRepeating(AlarmManager.RTC_WAKEUP, firstMillis,
30000, pIntent);
}
}
5）清单文件
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="test.org.help">
<permission
android:name="test.org.help.permission.C2D_MESSAGE"
android:protectionLevel="signature" />
<uses-permission android:name="au.com.KPS.companion.ACCESS_DATA" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.VIBRATE" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.FLASHLIGHT" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="test.org.help.permission.UA_DATA" />
<!-- GCM requires a Google account. -->
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<!-- This app has permission to register with GCM and receive message -->
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<uses-permission android:name="test.org.help.permission.C2D_MESSAGE" />
<uses-feature
android:name="android.hardware.camera"
android:required="false" />
<uses-feature
android:name="android.hardware.camera.autofocus"
android:required="false" />
<uses-feature
android:name="android.hardware.camera.flash"
android:required="false" />
<uses-feature android:name="android.hardware.screen.landscape" />
<application
android:name="test.org.help.KPSApp"
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:logo="@drawable/ic_actionbar_logo"
android:theme="@style/AppTheme"
tools:replace="android:icon, android:logo">
<!-- Activities -->
<activity
android:name="test.org.help.ui.activity.SplashActivity"
android:label="@string/app_name"
android:screenOrientation="portrait"
android:theme="@style/SplashTheme">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".ui.activity.JanRainLoginActivity"
android:screenOrientation="portrait" />
<activity
android:name=".ui.activity.LinkListActivity"
android:screenOrientation="portrait" />
<activity
android:name="test.org.help.ui.activity.KPSFragmentActivity"
android:exported="true"
android:screenOrientation="portrait"
android:windowSoftInputMode="adjustResize"></activity>
<activity
android:name="test.org.help.ui.activity.NotificationDialogActivity"
android:excludeFromRecents="true"
android:label=""
android:launchMode="singleInstance"
android:noHistory="true"
android:screenOrientation="portrait"
android:taskAffinity=""
android:theme="@style/AppTheme.Dialog.Notification"></activity>
<receiver
android:name="test.org.help.receivers.NotificationReceiver"
tools:ignore="ExportedReceiver">
<intent-filter>
<action android:name="test.org.help.util.ACTION_SHOW_AGENDA" />
<action android:name="test.org.help.util.ACTION_SNOOZE" />
<action android:name="test.org.help.util.ACTION_DISMISS" />
<action android:name="test.org.help.util.ACTION_SHOW_DIALOG" />
<data android:scheme="KPS" />
<data android:mimeType="text/plain" />
<data android:pathPattern="au\.org\.KPS\.util/.*" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
<activity
android:name="com.google.zxing.client.android.CaptureActivity"
android:screenOrientation="landscape"
android:theme="@android:style/Theme.Light.NoTitleBar"
tools:replace="android:theme,android:screenOrientation"></activity>
<activity
android:name="test.org.help.ui.activity.AppTutorialActivity"
android:screenOrientation="portrait"
android:theme="@style/SplashTheme"></activity>
<activity
android:name="test.org.help.ui.activity.TermsAndConditionsActivity"
android:label="@string/title_terms_and_conditions"
android:screenOrientation="portrait"></activity>
<activity
android:name="test.org.help.ui.activity.WarningActivity"
android:label="@string/title_Warning"
android:screenOrientation="portrait"></activity>
<activity
android:name="test.org.help.ui.activity.DifferentUserWarningActivity"
android:label="@string/title_Warning"
android:screenOrientation="portrait"></activity>
<activity
android:name="test.org.help.ui.activity.AppWhatsNewActivity"
android:label="@string/title_Warning"
android:screenOrientation="portrait"></activity>
<activity
android:name=".ui.activity.UserUpgradeActivity"
android:label="@string/title_upgrade"
android:screenOrientation="portrait"></activity>
<activity
android:name="eu.janmuller.android.simplecropimage.CropImage"
android:label=""
android:screenOrientation="portrait"></activity>
<!-- Facebook -->
<meta-data
android:name="com.facebook.sdk.ApplicationId"
android:value="@string/facebook_app_id" />
<!-- Services -->
<receiver android:name="com.mobileapptracker.Tracker">
<intent-filter>
<action android:name="com.android.vending.INSTALL_REFERRER" />
</intent-filter>
</receiver>
<service
android:name="test.org.help.service.DBUpdateService"
android:exported="false"
android:label="@string/app_name">
<intent-filter>
<action android:name="test.org.help.service.DBUpdateService"></action>
</intent-filter>
</service>
<receiver android:name="test.org.help.receivers.TimeChangeReceiver">
<intent-filter>
<action android:name="android.intent.action.TIMEZONE_CHANGED" />
</intent-filter>
</receiver>
<activity
android:name="com.janrain.android.engage.ui.JRFragmentHostActivity"
android:configChanges="orientation|screenSize"
android:screenOrientation="portrait"
android:windowSoftInputMode="adjustResize|stateHidden" />
<activity
android:name="com.janrain.android.engage.ui.JRFragmentHostActivity$Fullscreen"
android:configChanges="orientation|screenSize"
android:screenOrientation="portrait"
android:windowSoftInputMode="adjustResize|stateHidden" />
<!--Hockey app crash report-->
<meta-data
android:name="net.hockeyapp.android.appIdentifier"
android:value="@string/hockey_app_id" />
<receiver android:name="test.org.help.syncmanager.Network.NetworkAvailability">
<intent-filter>
<action android:name=".android.action.broadcast" />
<action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
<action android:name="android.net.wifi.WIFI_STATE_CHANGED" />
</intent-filter>
</receiver>
<activity
android:name=".db.AndroidDatabaseManager"
android:theme="@style/Theme.AppCompat.Light" /><!-- ATTENTION: This was auto-generated to add Google Play services to your project for
App Indexing. See https://g.co/AppIndexing/AndroidStudio for more information. -->
<meta-data
android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />
<service
android:name=".syncmanager.auto.MyTestService"
android:exported="false" />
<receiver
android:name=".syncmanager.auto.MyAlarmReceiver"
android:process=":remote"></receiver>
<receiver android:name=".syncmanager.auto.BootBroadcastReceiver">
</receiver>
</application>
</manifest>
如果将上面作为示例项目实现为单独的那么，后台服务总是正常执行。但如果尝试与我现有的代码集成，那么就无法工作......
已编辑：已找到解决方案 它通过在AndroidManifest.xml
中添加完整路径android：name服务得到解决<service
android:name="test.org.help.syncmanager.auto.MyTestService"
android:exported="false" />