Rounded corners with Picasso

Question

Is there a reasonable way to do rounded corners with Picasso that

1. Doesn\'t significantly slow down drawing
2. Works with hardware layers
3. Doesn\'t create a

Answer 1

this will work for any image of any size--

1) first create an empty image container for different resolution 2) then on runtime get its height and width by this-------

BitmapFactory.Options dimensions = new BitmapFactory.Options(); 
dimensions.inJustDecodeBounds = true;
Bitmap mBitmap = BitmapFactory.decodeResource(activity.getResources(), R.drawable.icon, dimensions);
        int height = dimensions.outHeight;
        int width =  dimensions.outWidth;

3)

Picasso.with(getActivity())
            .load(url)
            .error(R.drawable.image2)
            .placeholder(R.drawable.ic_drawer)
           .resize(width, height )
            .transform(new ImageTrans_roundedcorner())
            .into(imageView1);

4) now transformation class----

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;
import android.graphics.Bitmap.Config;
import android.graphics.Rect;
import android.graphics.RectF;
import com.squareup.picasso.Transformation;

public class ImageTrans_roundedcorner implements Transformation{

    private int mBorderSize=10;
    private int mCornerRadius = 20;
    private int mColor=Color.BLACK;

    @Override
    public Bitmap transform(Bitmap source) {
        // TODO Auto-generated method stub
        Bitmap output = Bitmap.createBitmap(source.getWidth(), source.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, source.getWidth(), source.getHeight());
        final RectF rectF = new RectF(rect);
        final float roundPx = mCornerRadius;

        paint.setAntiAlias(true);
        canvas.drawARGB(0, 0, 0, 0);
        paint.setColor(color);
        canvas.drawRoundRect(rectF, roundPx, roundPx, paint);

        paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
        canvas.drawBitmap(source, rect, rect, paint);

     // draw border
        paint.setColor(color);
        paint.setStyle(Paint.Style.STROKE);
        paint.setStrokeWidth((float) mBorderSize);
        canvas.drawRoundRect(rectF, mCornerRadius, mCornerRadius, paint);
        //-------------------

            if(source != output) source.recycle();

            return output;
    }

    @Override
    public String key() {
        // TODO Auto-generated method stub
        return "grayscaleTransformation()";
    }

}