Android How to - Create Circular Bitmap

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Question

We would like to know how to create Circular Bitmap.

Answer

The following code shows how to create a circular Bitmap.

/* w w w.ja va2s . c  o  m*/
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;

public class Main {
  public static Bitmap getCircularBitmap(Bitmap bitmap)
  {
    Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),
              bitmap.getHeight(), Config.ARGB_8888);
      Canvas canvas = new Canvas(output);

      final int color = 0xff424242;
      final Paint paint = new Paint();
      final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());

      paint.setAntiAlias(true);
      canvas.drawARGB(0, 0, 0, 0);
      paint.setColor(color);
      // canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
      canvas.drawCircle(bitmap.getWidth() / 2, bitmap.getHeight() / 2,
              bitmap.getWidth() / 2, paint);
      paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
      canvas.drawBitmap(bitmap, rect, rect, paint);
      //Bitmap _bmp = Bitmap.createScaledBitmap(output, 60, 60, false);
      //return _bmp;
      return output;
  }
}

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