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android – Why I am Getting Error 'Channel is unrecoverably broken and will be disposed!'

Posted by: admin March 11, 2020 Leave a comment


When I try to launch my AndEngine Activity, I get this error:

ERROR/InputDispatcher(21374): channel '4122e148 my.package.AcGame (server)' ~ Channel is unrecoverably broken and will be disposed!

The app doesn’t crash, but there’s a black screen and the device doesn’t react to pressing the ‘back’ or ‘home’ buttons.

Does anyone know what the problem is?

How to&Answers:

One of the most common reasons I see that error is when I am trying to display an alert dialog or progress dialog in an activity that is not in the foreground. Like when a background thread that displays a dialog box is running in a paused activity.


I think that You have memory leaks somewhere. You can find tips to avoid leaking memory here. Also you can learn about tools to track it down here.


Have you used another UI thread? You shouldn’t use more than 1 UI thread and make it look like a sandwich. Doing this will cause memory leaks.

I have solved a similar issue 2 days ago…

To keep things short: The main thread can have many UI threads to do multiple works, but if one sub-thread containing a UI thread is inside it, The UI thread may not have finished its work yet while it’s parent thread has already finished its work, this causes memory leaks.

For example…for Fragment & UI application…this will cause memory leaks.

getActivity().runOnUiThread(new Runnable(){

   public void run() {//No.1


getActivity().runOnUiThread(new Runnable(){

    public void run() {//No.2

Toast.makeText(getActivity(), "This is error way",Toast.LENGTH_SHORT).show();

    }});// end of No.2 UI new thread

}});// end of No.1 UI new thread

My solution is rearrange as below:

getActivity().runOnUiThread(new Runnable(){

   public void run() {//No.1


}});// end of No.1 UI new thread        

getActivity().runOnUiThread(new Runnable(){

   public void run() {//No.2

Toast.makeText(getActivity(), "This is correct way",Toast.LENGTH_SHORT).show();

}});// end of No.2 UI new thread

for you reference.

I am Taiwanese, I am glad to answer here once more.


You can see the source code about this output here:

void InputDispatcher::onDispatchCycleBrokenLocked(
        nsecs_t currentTime, const sp<Connection>& connection) {
    ALOGE("channel '%s' ~ Channel is unrecoverably broken and will be disposed!",
    CommandEntry* commandEntry = postCommandLocked(
            & InputDispatcher::doNotifyInputChannelBrokenLockedInterruptible);
    commandEntry->connection = connection;

It’s cause by cycle broken locked…


I got similar error (my app crashes) after I renamed something in strings.xml and forgot to modify other files (a preference xml resource file and java code).

IDE (android studio) didn’t showed any errors. But, after I repaired my xml files and java code, app ran okay. So, maybe there are some small mistakes in your xml files or constants.


I had the same problem. Mine was due to a third jar, but the logcat did not catch the exception, i solved by update the third jar, hope these will help.


I had the same problem but mine was Due To an Android database memory leak. I skipped a cursor. So the device crashes so as to fix that memory leak. If you are working with the Android database check if you skipped a cursor while retrieving from the database


It happened for me as well while running a game using and-engine.
It was fixed after i added the below code to my manifest.xml. This code should be added to your mainactivity.



I had the same problem.
To solve the error:
Close it on the emulator and then run it using Android Studio.

The error happens when you try to re-run the app when the app is already running on the emulator.

Basically the error says – “I don’t have the existing channel anymore and disposing the already established connection” as you have run the app from Android Studio again.


I was having the same problem too. In my case was caused when trying to reproduce videos with a poor codification (demanded too much memory).
This helped me to catch the error and request another version of the same video.


In my case these two issue occurs in some cases like when I am trying to display the progress dialog in an activity that is not in the foreground. So, I dismiss the progress dialog in onPause of the activity lifecycle. And the issue is resolved.

Cannot start this animator on a detached view! reveal effect BUG

ANSWER: Cannot start this animator on a detached view! reveal effect

Why I am Getting Error ‘Channel is unrecoverably broken and will be disposed!

ANSWER: Why I am Getting Error 'Channel is unrecoverably broken and will be disposed!'

protected void onPause() {


private void dismissProgressDialog() {
    if(progressDialog != null && progressDialog.isShowing())


I had this issue and the cause was actually a NullPointerException. But it was not presented to me as one!

my Output:
screen was stuck for a very long period and ANR

My State :
the layout xml file was included another layout, but referenced the included view without giving id in the attached layout. (i had two more similar implementations of the same child view, so the resource id was created with the given name)

Note : it was a Custom Dialog layout, so checking dialogs first may help a bit

Conclusion :
There is some memory leak happened on searching the id of the child view.


As I faced this error, somewhere in your code your funcs or libraries that used run on different threads, so try to call all code on the same thread , it fixed my problem.

If you call methods on WebView from any thread other than your app’s UI thread, it can cause unexpected results. For example, if your app uses multiple threads, you can use the runOnUiThread() method to ensure your code executes on the UI thread:

Google reference link


Reading through all contributions, it looks like many different origins exhibit cause this same problem symptoms.

In my case for instance – I got this problem as soon as I added


to my progress bar properties.
I think the GUI designer of ADT is known for several bugs. Hence I assume this is one of them. So if you encounter similar problem symptoms (that just do not make sense) after playing with your GUI setup, just try to roll back what you did and undo your last GUI modifications.

Just press Ctrl+z with the recently modified file on screen.


The Version Control tool could be helpful. Open the Version Control panel – choose Local Changes tab and see recently modified (perhaps .xml) files.

Right click some most suspicious one and click Show Diff.
Then just guess which modified line could be responsible.

Good luck 🙂


This error occurred in case of memory leak. For example if you have any static context of an Android component (Activity/service/etc) and its gets killed by system.

Example: Music player controls in notification area. Use a foreground service and set actions in the notification channel via PendingIntent like below.

Intent notificationIntent = new Intent(this, MainActivity.class);
                | Intent.FLAG_ACTIVITY_CLEAR_TASK);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0,
                notificationIntent, 0);

        Intent previousIntent = new Intent(this, ForegroundService.class);
        PendingIntent ppreviousIntent = PendingIntent.getService(this, 0,
                previousIntent, 0);

        Intent playIntent = new Intent(this, ForegroundService.class);
        PendingIntent pplayIntent = PendingIntent.getService(this, 0,
                playIntent, 0);

        Intent nextIntent = new Intent(this, ForegroundService.class);

        Bitmap icon = BitmapFactory.decodeResource(getResources(),

        NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        String NOTIFICATION_CHANNEL_ID = "my_channel_id_01";

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            NotificationChannel notificationChannel = new NotificationChannel(NOTIFICATION_CHANNEL_ID, "My Notifications", NotificationManager.IMPORTANCE_HIGH);

            // Configure the notification channel.
            notificationChannel.setDescription("Channel description");
            notificationChannel.setVibrationPattern(new long[]{0, 1000, 500, 1000});

        NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID);
        Notification notification = notificationBuilder
                .setContentTitle("Foreground Service")
                .setContentText("Foreground Service Running")
                .setLargeIcon(Bitmap.createScaledBitmap(icon, 128, 128, false))

And if this notification channel get broken abruptly (may be by system, like in Xiomi devices when we clean out the background apps), then due to memory leaks this error is thrown by system.


For me it was caused by a splash screen image that was too big (over 4000×2000). The problem disappeared after reducing its dimensions.


In my case, I was using Glide library and the image passed to it was null. So it was throwing this error. I put a check like this:

if (imageData != null) {
    // add value in View here 

And it worked fine. Hope this helps someone.


One of the reasons I see that error my backend(node.js) packages too old. When I updated all my packages solved my problem.

npm update **or** npm [email protected] --save