CODEWITHSUNDEEP
xamarinxamarin.androidxamarin.formsout-of-memory
tanktaeyang
tanktaeyang

Reputation: 13

Xamarin.Forms App Crash in Android

What is the issue which will cause the app crash when a user opens the app?

I integrate with HockeyApp, the error shown:

VMRuntime.newNonMovableArray java.lang.OutOfMemoryError: Failed to allocate a 63701004 byte allocation with 16777056 free bytes and 41MB until OOM

Xamarin caused by: java.lang.OutOfMemoryError: Failed to allocate a 63701004 byte
allocation with 16777056 free bytes and 41MB until OOM
dalvik.system.VMRuntime.newNonMovableArray(Native Method)
android.graphics.BitmapFactory.nativeDecodeStream(Native Method)
android.graphics.BitmapFactory.decodeStreamInternal()BitmapFactory.java:639
android.graphics.BitmapFactory.decodeStream()BitmapFactory.java:615
android.graphics.BitmapFactory.decodeStream()BitmapFactory.java:653

Answer I already solve the problems with

  1. Update the Xamarin.Forms Nuget.
  2. Delete the package file in the solution.
  3. Build the Solution again.

Upvotes: 1

Views: 1576

Answers (2)

Quality Catalyst
Quality Catalyst

Reputation: 6795

I had the same issue. It turned out that multiple changes solved the problem.

Firstly, I ensured that my app can deal with large memory heaps. This is a setting you can set/change in the app's manifest:

<application
    ...
    android:largeHeap="true"> <!-- This line does the trick. -->

Secondly, I made sure that I enforce small image sizes wherever possible. In my case I decided to limit the max resolution to either 720 pixels or the screen resolution, whatever is smaller. As a result I resized large images:

int maxImageSideLength = Math.Min(720, Math.Max(myScreenHeight, myScreenWidth));
// see tutorials how to resize the image now

Lastly, I ensured to dispose image bitmaps (used memory) that where assigned to image views before I assigned a new image. I am uncertain whether this is really necessary as I can't believe that assigning a new image bitmap isn't cleaned up properly, but I left this in my code and I am still happy with a smoothly running app. Example:

Bitmap resizedImage = ResizeImage(fileName, maxImageSideLength);
imageView.SetImageBitmap(null); // this is to free allocated memory
imageView.SetImageBitmap(resizedImage);
GC.Collect(); // dispose of the Java side bitmap

Upvotes: 0

casillas
casillas

Reputation: 16793

Add in your manifest these lines android:hardwareAccelerated="false" , android:largeHeap="true" it may solve your issue(s).

<application
    android:allowBackup="true"
    android:hardwareAccelerated="false"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:largeHeap="true"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">

Upvotes: 2

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