我有一个带有 TabActivity 的应用程序，每次从我的引擎(NDK C 代码)收到回调时，我都会在其中显示一个对话框。我确保当应用程序处于恢复状态时显示对话框。

收到引擎的回调后，我启动了 NetworkDownDialog Activity ，但这会导致对话框停留一秒钟然后消失。如果我使用 Dialog 或 AlertDialog，也会发生同样的事情。最奇怪的是，失踪似乎是随机的(并不总是发生)。

这是一个 S3 设备。怎么回事？

编辑于 23/05/2013

网络关闭对话框代码

public class NetworkDownDialog extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.network_down);
        Logger.d("NetworkDownDialog", "----------onCreate-----------");
        registerReceiver(mNetworkDownReceiver, new IntentFilter("NetworkDown"));
    }
    @Override
    protected void onDestroy() {
        super.onDestroy();
        unregisterReceiver(mNetworkDownReceiver);
        Logger.d("NetworkDownDialog", "------onDestroy-------");
    }
    @Override
    protected void onResume() {
        super.onResume();
        Logger.d("NetworkDownDialog", "------onResume-------");
    }
    @Override
    protected void onRestart() {
        super.onRestart();
        Logger.d("NetworkDownDialog", "------onRestart-------");
    }
    @Override
    protected void onStart() {
        super.onStart();
        Logger.d("NetworkDownDialog", "------onStart-------");
    }
    @Override
    protected void onStop() {
        super.onStop();
        Logger.d("NetworkDownDialog", "------onStop-------");
    }
    @Override
    public void onBackPressed() {
        Logger.d("NetworkDownDialog", "------onBackPressed Do nothing-------");
    }
    private BroadcastReceiver mNetworkDownReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            finish();
        }
    };
}

在日志中，这是我看到的:

05-15 20:48:02.981 D/NetworkDownDialog( 1050): ------onCreate-------
05-15 20:48:02.981 D/alsa_ucm(  202): Setting mixer control: RX5 MIX1 INP2, value: RX2
05-15 20:48:02.991 D/alsa_ucm(  202): Setting mixer control: RX6 DSM MUX, value: DSM_INV
05-15 20:48:02.991 D/alsa_ucm(  202): Setting mixer control: LINEOUT2 Volume, value: 100
05-15 20:48:02.991 D/alsa_ucm(  202): Setting mixer control: LINEOUT4 Volume, value: 100
05-15 20:48:02.991 D/NetworkDownDialog( 1050): ------onStart-------
05-15 20:48:02.991 D/alsa_ucm(  202): Setting mixer control: RX5 Digital Volume, value: 65
05-15 20:48:02.991 D/NetworkDownDialog( 1050): ------onResume-------

显示 Activity 对话框

 **05-15 20:48:05.073 W/InputDispatcher(  716): channel ~ Consumer closed input channel or an error occurred.  events=0x9
05-15 20:48:05.073 E/InputDispatcher(  716): channel ~ Channel is unrecoverably broken and will be disposed!**
05-15 20:48:05.073 W/InputDispatcher(  716): Attempted to unregister already unregistered input channel
05-15 20:48:05.083 I/SurfaceFlinger(  195): id=2033 Removed idx=5 MapSz=4
05-15 20:48:05.083 D/KeyguardViewMediator(  716): setHidden false
05-15 20:48:05.103 I/Adreno200-EGLSUB(  195): <CreateImage:897>: Android Image
05-15 20:48:05.103 I/Adreno200-EGLSUB(  195): <GetImageAttributes:1106>: RGBA_8888
**05-15 20:48:05.103 E/BufferQueue(  195): [mypackage.NetworkDownDialog] dequeueBuffer: SurfaceTexture has been abandoned!
05-15 20:48:05.103 E/SurfaceTextureClient( 1050): dequeueBuffer failed (No such device**)
05-15 20:48:05.103 D/PhoneStatusBar(  894): addNotification score=0
05-15 20:48:05.123 E/ViewRootImpl( 1050): Could not lock surface
05-15 20:48:05.123 E/ViewRootImpl( 1050): java.lang.IllegalArgumentException
05-15 20:48:05.123 E/ViewRootImpl( 1050):   at android.view.Surface.lockCanvasNative(Native Method)
05-15 20:48:05.123 E/ViewRootImpl( 1050):   at android.view.Surface.lockCanvas(Surface.java:88)
05-15 20:48:05.123 E/ViewRootImpl( 1050):   at android.view.ViewRootImpl.drawSoftware(ViewRootImpl.java:2314)
05-15 20:48:05.123 E/ViewRootImpl( 1050):   at android.view.ViewRootImpl.draw(ViewRootImpl.java:2277)
05-15 20:48:05.123 E/ViewRootImpl( 1050):   at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:2145)
05-15 20:48:05.123 E/ViewRootImpl( 1050):   at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1956)
05-15 20:48:05.123 E/ViewRootImpl( 1050):   at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1110)
05-15 20:48:05.123 E/ViewRootImpl( 1050):   at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4472)
05-15 20:48:05.123 E/ViewRootImpl( 1050):   at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
05-15 20:48:05.123 E/ViewRootImpl( 1050):   at android.view.Choreographer.doCallbacks(Choreographer.java:555)
05-15 20:48:05.123 E/ViewRootImpl( 1050):   at android.view.Choreographer.doFrame(Choreographer.java:525)
05-15 20:48:05.123 E/ViewRootImpl( 1050):   at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
05-15 20:48:05.123 E/ViewRootImpl( 1050):   at android.os.Handler.handleCallback(Handler.java:615)
05-15 20:48:05.123 E/ViewRootImpl( 1050):   at android.os.Handler.dispatchMessage(Handler.java:92)
05-15 20:48:05.123 E/ViewRootImpl( 1050):   at android.os.Looper.loop(Looper.java:137)
05-15 20:48:05.123 E/ViewRootImpl( 1050):   at android.app.ActivityThread.main(ActivityThread.java:4918)
05-15 20:48:05.123 E/ViewRootImpl( 1050):   at java.lang.reflect.Method.invokeNative(Native Method)
05-15 20:48:05.123 E/ViewRootImpl( 1050):   at java.lang.reflect.Method.invoke(Method.java:511)
05-15 20:48:05.123 E/ViewRootImpl( 1050):   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1004)
05-15 20:48:05.123 E/ViewRootImpl( 1050):   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:771)
05-15 20:48:05.123 E/ViewRootImpl( 1050):   at dalvik.system.NativeStart.main(Native Method)

在这种情况下，ActivityDialog 在上述操作之后消失了。

为什么我的对话框消失了？我的 C 级 native 代码的内存损坏是否可能导致此问题？我在用户界面方面做错了什么吗？我完全卡住了...

编辑于 24 -05 -2013

05-24 19:49:00.025 I/SurfaceFlinger( 1901): id=2147 Removed NainTabActivity idx=3 MapSz=4

05-24 19:49:00.025 I/SurfaceFlinger( 1901): id=2147 Removed NainTabActivity idx=-2 MapSz=4

SurfaceFlinger 删除了我的 tabactivity。这会导致对话框删除吗？

最佳答案

1. 确保您正在显示带有应用程序上下文的对话框。
2. 确保没有两个事件发生并击中代码的同一部分。即，当您要显示对话框时，来自 C 代码的另一个事件用于显示对话框。
3. 确保您的应用程序有足够的内存来顺利运行。

关于Android: Activity 对话框/对话框意外消失，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/16564068/