La fuite de mémoire se produit dans Xamarin Forms Android lors de l'utilisation de Bitmap

Question

Lors de l'utilisation de bitmap dans Xamarin Forms Android, je suis en train de télécharger des images dont la taille est supérieure à la taille habituelle.

vide getImage() {------- imageView.setImageBitmap (Bitmap.createScaledBitmap (getBitmapFromViewUpdated (_view), (int) largeur, (int) hauteur, true)); tempView = imageView; } -------- } statique Bitmap getBitmapFromView publique (vue Vue finale) {

 view.setLayoutParams(new LayoutParams(view.getWidth(), 
       view.getHeight())); 
     view.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED), 
       MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED)); 
     view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight()); 
     final Bitmap bitmap_ = Bitmap 
       .createBitmap(view.getMeasuredWidth(), 
         view.getMeasuredHeight(), 
         Bitmap.Config.ARGB_8888); 
     Canvas c = new Canvas(bitmap_); 
     view.draw(c); 

     return bitmap_; 

    } 

    Bitmap getBitmapFromViewUpdated(final View view) { 
     if (view.getWidth() == 0 || view.getHeight() == 0) 
      view.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 
        ViewGroup.LayoutParams.MATCH_PARENT)); 
     else 
      view.setLayoutParams(new LayoutParams(view.getWidth(), 
        view.getHeight())); 
     view.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED), 
       MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED)); 
     view.layout(0, 0, viewWidth, viewHeight); 
     final Bitmap bitmap_; 
     if(viewWidth>0 && viewHeight>0) { 
      bitmap_ = Bitmap 
        .createBitmap(viewWidth, 
          viewHeight, Bitmap.Config.ARGB_8888); 
     } 
     else 

     { 
      bitmap_= Bitmap 
        .createBitmap(view.getMeasuredWidth(), 
          view.getMeasuredHeight(), 
          Bitmap.Config.ARGB_8888); 
     } 
     Canvas c = new Canvas(bitmap_); 
     view.draw(c); 

     return bitmap_; 

    } 

} 

J'ai essayé android: largeHeap = true, peut atteindre le résultat tout en utilisant cela, mais je dois savoir comment corriger avec le redimensionnement des bitmaps.

Merci à l'avance ...

Answer 1

Vous pouvez vérifier ces deux liens pour la gestion bitmap efficace Xamarin android

https://forums.xamarin.com/discussion/5716/disposing-of-bitmaps-properly

https://developer.xamarin.com/recipes/android/resources/general/load_large_bitmaps_efficiently/

GoodLuck!