Android 广播接收机接收动作\媒体\弹出的问题

我们使用以下代码来识别用户是否卸载/装载sd卡。从主活动的oncreate方法调用registerExternalStorageListener

不幸的是，它不起作用。卸载sd卡时，我们的应用程序崩溃并重新启动

你知道为什么会这样吗

    public void registerExternalStorageListener() {
    if (mUnmountReceiver == null) {
        mUnmountReceiver = new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                String action = intent.getAction();
                if (action.equals(Intent.ACTION_MEDIA_EJECT)) {
                    mSdCardAvailable = false;
                } else if (action.equals(Intent.ACTION_MEDIA_MOUNTED)) {
                    mSdCardAvailable = true;
                }
            }
        };
        IntentFilter iFilter = new IntentFilter();
        iFilter.addAction(Intent.ACTION_MEDIA_EJECT);
        iFilter.addAction(Intent.ACTION_MEDIA_MOUNTED);
        iFilter.addDataScheme("file");
        registerReceiver(mUnmountReceiver, iFilter);
    }
}

stacktrace在这里。最后一个条目之一：WIN DEATH:Window{40957bf8 com.ichi2.anki/com.ichi2.anki.StudyOptions paused=false}

10-30 13:57:31.335: DEBUG/VoldCmdListener(109): storage users /mnt/sdcard
10-30 13:57:36.179: INFO/PackageManager(190): Updating external media status from mounted to unmounted
10-30 13:57:36.214: DEBUG/VoldCmdListener(109): asec list
10-30 13:57:36.226: WARN/InputManagerService(190): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@408f1a00
10-30 13:57:36.410: DEBUG/VoldCmdListener(109): asec path com.teamviewer.teamviewer.market.mobile-1
10-30 13:57:36.417: INFO/PackageManager(190): Removing non-system package:com.teamviewer.teamviewer.market.mobile
10-30 13:57:36.417: INFO/ActivityManager(190): Force stopping package com.teamviewer.teamviewer.market.mobile uid=10130
10-30 13:57:37.117: INFO/ActivityManager(190): Force stopping package com.teamviewer.teamviewer.market.mobile uid=10130
10-30 13:57:37.214: DEBUG/dalvikvm(10593): GC_EXPLICIT freed 430K, 50% free 2971K/5895K, external 0K/0K, paused 44ms
10-30 13:57:37.355: DEBUG/szipinf(190): Initializing inflate state
10-30 13:57:37.402: DEBUG/szipinf(190): Initializing inflate state
10-30 13:57:37.453: DEBUG/szipinf(190): Initializing inflate state
10-30 13:57:37.511: DEBUG/szipinf(190): Initializing inflate state
10-30 13:57:37.558: DEBUG/szipinf(190): Initializing inflate state
10-30 13:57:37.613: DEBUG/szipinf(190): Initializing inflate state
10-30 13:57:37.636: DEBUG/szipinf(190): Initializing inflate state
10-30 13:57:37.652: DEBUG/szipinf(190): Initializing inflate state
10-30 13:57:38.121: DEBUG/szipinf(190): Initializing inflate state
10-30 13:57:38.156: INFO/MonitorSver(7625): externalAppsListener -- action: android.intent.action.EXTERNAL_APPLICATIONS_UNAVAILABLE
10-30 13:57:38.394: DEBUG/dalvikvm(190): GC_EXPLICIT freed 970K, 46% free 7837K/14407K, external 1569K/2073K, paused 80ms
10-30 13:57:38.617: DEBUG/dalvikvm(9161): GC_CONCURRENT freed 242K, 48% free 3610K/6855K, external 0K/0K, paused 30ms+6ms
10-30 13:57:38.644: DEBUG/dalvikvm(190): GC_EXPLICIT freed 244K, 47% free 7727K/14407K, external 1569K/2073K, paused 116ms
10-30 13:57:38.699: DEBUG/VoldCmdListener(109): asec unmount com.teamviewer.teamviewer.market.mobile-1 force
10-30 13:57:38.773: DEBUG/VoldCmdListener(109): storage users /mnt/sdcard
10-30 13:57:39.015: DEBUG/dalvikvm(9161): GC_CONCURRENT freed 474K, 47% free 3647K/6855K, external 0K/0K, paused 1ms+5ms
10-30 13:57:39.226: WARN/ActivityManager(190): Killing processes unmount media at adjustment 7
10-30 13:57:39.226: WARN/ActivityManager(190): Killing ProcessRecord{40910cc8 10313:com.cooliris.media/10029} (adj 8): unmount media
10-30 13:57:39.230: DEBUG/VoldCmdListener(109): storage users /mnt/sdcard
10-30 13:57:39.378: DEBUG/VoldCmdListener(109): storage users /mnt/emmc
10-30 13:57:39.535: WARN/ActivityManager(190): Killing processes unmount media at adjustment 4
10-30 13:57:39.535: WARN/ActivityManager(190): Killing ProcessRecord{409e8130 10333:com.ichi2.anki/10081} (adj 4): unmount media
10-30 13:57:39.535: DEBUG/VoldCmdListener(109): storage users /mnt/emmc
10-30 13:57:39.742: DEBUG/dalvikvm(190): GC_EXPLICIT freed 521K, 47% free 7652K/14407K, external 1561K/2073K, paused 65ms
10-30 13:57:39.742: INFO/PackageManager(190): Updating external media status from unmounted to unmounted
10-30 13:57:39.746: DEBUG/VoldCmdListener(109): volume unmount /mnt/sdcard force
10-30 13:57:39.746: DEBUG/Vold(109): Volume emmc state changing 4 (Mounted) -> 5 (Unmounting)
10-30 13:57:39.765: INFO/ActivityManager(190): Start proc com.cooliris.media for broadcast com.cooliris.media/com.cooliris.cache.BootReceiver: pid=10606 uid=10029 gids={1015, 3003}
10-30 13:57:39.937: INFO/k9(2322): storage path "/mnt/sdcard" unmounting
10-30 13:57:39.964: DEBUG/szipinf(10606): Initializing inflate state
10-30 13:57:39.972: INFO/ActivityThread(10606): Pub com.cooliris.picasa.contentprovider: com.cooliris.picasa.PicasaContentProvider
10-30 13:57:40.214: INFO/Database(10606): sqlite returned: error code = 0, msg = Recovered 10 frames from WAL file /data/data/com.cooliris.media/databases/picasa.db-wal
10-30 13:57:40.285: INFO/BootReceiver(10606): Got intent with action android.intent.action.MEDIA_EJECT
10-30 13:57:40.339: WARN/ActivityManager(190): Scheduling restart of crashed service com.ichi2.anki/.AnkiDroidWidgetMedium$UpdateService in 5000ms
10-30 13:57:40.339: WARN/ActivityManager(190): Scheduling restart of crashed service com.ichi2.anki/.AnkiDroidWidgetSmall$UpdateService in 15000ms
10-30 13:57:40.339: INFO/WindowManager(190): WIN DEATH: Window{40957bf8 com.ichi2.anki/com.ichi2.anki.StudyOptions paused=false}
10-30 13:57:40.359: VERBOSE/MediaProvider(7827): Detached volume: external
10-30 13:57:40.421: DEBUG/dalvikvm(9161): GC_CONCURRENT freed 611K, 51% free 3421K/6855K, external 0K/0K, paused 18ms+2ms
10-30 13:57:40.472: DEBUG/szipinf(10593): Initializing inflate state
10-30 13:57:40.496: DEBUG/szipinf(10593): Initializing inflate state
10-30 13:57:40.519: DEBUG/szipinf(10593): Initializing inflate state

请参阅打开的错误：