应用程序崩溃，甚至与startforeground

Question

即使有前台服务，我的android应用程序在后台死亡。 这里是孔清单：

<?xml version="1.0" encoding="utf-8"?> 

<supports-screens 
    android:anyDensity="true" 
    android:largeScreens="true" 
    android:normalScreens="true" 
    android:smallScreens="true" > 
</supports-screens> 

<application 
    android:debuggable="true" 
    android:icon="@drawable/icon" 
    android:label="TritonHK" 
    android:theme="@android:style/Theme.NoTitleBar" > 
    <activity 
     android:name=".LoginActivity" 
     android:screenOrientation="portrait" > 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 

      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 

    <service 
     android:name=".MyService" 
     android:icon="@drawable/icon" 
     android:label="TritonHK" 
     android:process=":my_process" > 
    </service> 

    <activity 
     android:name="Setting" 
     android:configChanges="orientation" 
     android:screenOrientation="portrait" > 
    </activity> 
    <activity 
     android:name="MenuScreen" 
     android:configChanges="orientation" 
     android:screenOrientation="portrait" > 
    </activity> 
    <activity 
     android:name="TaskSheetList" 
     android:configChanges="orientation" 
     android:screenOrientation="portrait" > 
    </activity> 
    <activity 
     android:name="TaskDetails" 
     android:configChanges="orientation" 
     android:screenOrientation="portrait" > 
    </activity> 
    <activity 
     android:name="CreditsList" 
     android:configChanges="orientation" 
     android:screenOrientation="portrait" > 
    </activity> 
    <activity 
     android:name="SectionsList" 
     android:configChanges="orientation" 
     android:screenOrientation="portrait" > 
    </activity> 
    <activity 
     android:name="SuperDashboard" 
     android:configChanges="orientation" 
     android:screenOrientation="portrait" > 
    </activity> 
    <activity 
     android:name="InspectionActivity" 
     android:configChanges="orientation" 
     android:screenOrientation="portrait" > 
    </activity> 
    <activity 
     android:name="Inbox" 
     android:configChanges="orientation" 
     android:screenOrientation="portrait" > 
    </activity> 
    <activity 
     android:name="InspectionDetail" 
     android:configChanges="orientation" 
     android:screenOrientation="portrait" > 
    </activity> 
    <activity 
     android:name="StaffListView" 
     android:configChanges="orientation" 
     android:screenOrientation="portrait" > 
    </activity> 
    <activity 
     android:name="MultiTaskSheetListView" 
     android:configChanges="orientation" 
     android:screenOrientation="portrait" > 
    </activity> 
    <activity 
     android:name="CheckListItemDetails" 
     android:configChanges="orientation" 
     android:screenOrientation="portrait" > 
    </activity> 
    <activity 
     android:name="OpenJobs" 
     android:configChanges="orientation" 
     android:screenOrientation="portrait" > 
    </activity> 
    <activity 
     android:name="GuestDetails" 
     android:configChanges="orientation" 
     android:screenOrientation="portrait" > 
    </activity> 
    <activity 
     android:name="MessageList" 
     android:configChanges="orientation" 
     android:screenOrientation="portrait" > 
    </activity> 
    <activity 
     android:name="ImageCollectionActivity" 
     android:configChanges="orientation" 
     android:screenOrientation="portrait" > 
    </activity> 
    <activity 
     android:name="NewBGMessages" 
     android:configChanges="orientation" 
     android:screenOrientation="portrait" > 
    </activity> 
</application> 
<!-- Added for 4.1 Android os --> 
<uses-sdk android:minSdkVersion="7" /> 

<uses-feature android:name="android.hardware.camera" /> 
<uses-feature android:name="android.hardware.camera.autofocus" /> 
<uses-feature android:name="android.hardware.telephony" /> 

<uses-permission android:name="android.permission.CAMERA" /> 
<uses-permission android:name="android.permission.INTERNET" > 
</uses-permission> 
<uses-permission android:name="android.permission.READ_PHONE_STATE" > 
</uses-permission> 
<uses-permission android:name="android.permission.CALL_PHONE" > 
</uses-permission> 
<uses-permission android:name="android.permission.VIBRATE" /> 
<uses-permission android:name="android.permission.SET_WALLPAPER" > 
</uses-permission> 
<uses-permission android:name="android.permission.GET_TASKS" /> 
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> 

这里是service

MLog.w(getClass().getName(), "TritonHK started"); 

     Notification note=new Notification(R.drawable.icon, 
              "TritonHK is running", 
              System.currentTimeMillis()); 
     Intent i=new Intent(this, BGMessages.class); 

     i.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP| 
        Intent.FLAG_ACTIVITY_SINGLE_TOP); 

     PendingIntent pi=PendingIntent.getActivity(this, 0, 
                i, 0); 

     note.setLatestEventInfo(this, "TritonHK", 
           "TritonHK", 
           pi); 
     note.flags|=Notification.FLAG_NO_CLEAR; 

     startForeground(1337, note); 

的代码，这里是我如何我开始我的service：

Intent i=new Intent(this, MyService.class); 

     startService(i); 

这里只是当时的logcat的时候被打死：

02-05 10:04:16.676 D/dalvikvm(20458): GC_CONCURRENT freed 2010K, 54% free 3862K/8327K, external 11961K/14009K, paused 13ms+2ms 
02-05 10:04:20.576 D/dalvikvm(19610): GC_CONCURRENT freed 511K, 52% free 2973K/6151K, external 2171K/2711K, paused 2ms+2ms 
02-05 10:04:28.256 D/dalvikvm(19610): GC_CONCURRENT freed 449K, 52% free 2966K/6151K, external 2112K/2638K, paused 2ms+11ms 
02-05 10:04:32.626 D/dalvikvm(20458): GC_CONCURRENT freed 1970K, 54% free 3862K/8327K, external 11961K/14009K, paused 7ms+2ms 
02-05 10:04:43.216 D/dalvikvm(19610): GC_CONCURRENT freed 498K, 52% free 2974K/6151K, external 2140K/2672K, paused 2ms+2ms 
02-05 10:04:48.266 D/dalvikvm(20458): GC_CONCURRENT freed 1974K, 54% free 3869K/8327K, external 11961K/14009K, paused 3ms+3ms 
02-05 10:04:58.746 D/dalvikvm(19610): GC_CONCURRENT freed 510K, 52% free 2973K/6151K, external 2140K/2672K, paused 1ms+2ms 
02-05 10:05:00.176 D/kernel ( 120): [40912.899353] max17040 0-0036: batt:100%, 4126 mV 
02-05 10:05:03.686 D/dalvikvm(20458): GC_CONCURRENT freed 1979K, 54% free 3862K/8327K, external 11961K/14009K, paused 7ms+3ms 
02-05 10:05:13.616 D/dalvikvm(19610): GC_CONCURRENT freed 510K, 52% free 2973K/6151K, external 2202K/2750K, paused 2ms+2ms 
02-05 10:05:19.706 D/dalvikvm(20458): GC_CONCURRENT freed 1970K, 54% free 3862K/8327K, external 11961K/14009K, paused 14ms+2ms 
02-05 10:05:21.346 D/dalvikvm(19610): GC_CONCURRENT freed 449K, 52% free 2962K/6151K, external 2112K/2638K, paused 2ms+3ms 
02-05 10:05:35.526 D/dalvikvm(20458): GC_CONCURRENT freed 2038K, 54% free 3871K/8327K, external 11961K/14009K, paused 1ms+3ms 
02-05 10:05:36.676 D/skia (20458): purging 194K from font cache [25 entries] 
02-05 10:05:36.936 D/dalvikvm(19610): GC_CONCURRENT freed 498K, 52% free 2974K/6151K, external 2202K/2750K, paused 1ms+5ms 
02-05 10:05:44.656 D/dalvikvm( 238): GC_CONCURRENT freed 1828K, 42% free 7427K/12743K, external 6677K/8035K, paused 5ms+20ms 
02-05 10:05:46.206 I/ActivityManager( 238): Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10100000 cmp=com.tritonhk.android/.LoginActivity } from pid 238 
02-05 10:05:46.266 I/ActivityManager( 238): Start proc com.tritonhk.android for activity com.tritonhk.android/.TaskDetails: pid=20479 uid=10124 gids={1006, 3003, 1015} 
02-05 10:05:46.336 W/InputManagerService( 238): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@2b4a1708 

我在我的first activity的onCreate开始service。

请帮我这个。

Answer 1

你有2个独立的过程。您的活动在一个流程中运行，您的服务在另一个流程中运行。你已经告诉Android，你的服务是一个前台服务，它应该可以防止Android杀死它。但是，您的活动正在另一个进程中运行，并且当该进程进入后台时，Android会将其关闭。

要解决此问题，请将您的服务和活动置于相同的过程中。然后，Android将不会因为您运行了前台服务而终止该进程。当然，不能保证Android不会终止你的进程（如果它需要这些资源的话），但是如果你的应用程序不是资源管理器，它将会保持活力。

为了把服务和在同一进程的活动，在您的清单从<service>描述删除此行：

android:process=":my_process" 

Answer 2

偏偏有没有那么garanties您的服务将不会受到机器人杀死任何可能性：见http://www.androidguys.com/2009/09/09/diamonds-are-forever-services-are-not/

保持服务活着的时间无限量也不是一个好主意：http://www.androidguys.com/2010/03/29/code-pollution-background-control/

你可以使用一些方法来增加服务的优先级，但是在某一时刻，这个服务会被杀死。