How to set bitmap in circular imageview?

I have 1 circular imageview and I want to place bitmap inside the imageview. but when I set the compressed bitmap image it is always rectangle. Please help me to set bitmap in circular imageview开发者_运维技巧.

Thanks

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I am curious about how you created a circular ImageView. Can you share that secret ?? As far as creating a circular Bitmap is concerned, create a BitmapShader from the bitmap you want to show. Then create a ShapeDrawable (Oval) and assign the bitmap shader to it. Draw the drawable. Bam! circular image!

Bitmap bitmap = getthebitmapyouwanttoshowinacirclefromsomewhere;
Bitmap circleBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888);

BitmapShader shader = new BitmapShader (bitmap,  TileMode.CLAMP, TileMode.CLAMP);
Paint paint = new Paint();
        paint.setShader(shader);
paint.setAntiAlias(true);
Canvas c = new Canvas(circleBitmap);
c.drawCircle(bitmap.getWidth()/2, bitmap.getHeight()/2, bitmap.getWidth()/2, paint);

myImageView.setImageBitmap(circleBitmap);

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Androidx released native support for this.

add to your build.gradle:

dependencies { 
  ...
  implementation "androidx.core:core-ktx:1.7.0"
  }

usage (kotlin is shown here, java is also supported):

import androidx.core.graphics.drawable.RoundedBitmapDrawable;
import androidx.core.graphics.drawable.RoundedBitmapDrawableFactory;



val bitmap: Bitmap = ... // get from somewhere

val roundedBitmapWrapper: RoundedBitmapDrawable =
          RoundedBitmapDrawableFactory.create(Resources.getSystem(), bitmap)

roundedBitmapWrapper.setCircular(true) // important! if you don't call this, the wrapper will just show the original rectangle bitmap


// and then you can display the roundedBitmap on an ImageView like this:
val imageView: ImageView = ... // get from somewhere
imageView.setImageDrawable(roundedBitmapWrapper)

P.S., the class RoundedBitmapDrawable has a lot of other cool stuff, for example if you don't want the bitmap to be completely circle, but instead just give some rounded-corners effect for the original rectangle bitmap, this can also be supported. check out the official doc at https://developer.android.com/reference/androidx/core/graphics/drawable/RoundedBitmapDrawable