Border over a bitmap with rounded corners in Android
android, bitmap, border, rounded-corners
Solution
I put the following together for myself.
public static Bitmap getRoundedCornerBitmap(Bitmap bitmap, int color, int cornerDips, int borderDips, Context context) {
Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(),
Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(output);
final int borderSizePx = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, (float) borderDips,
context.getResources().getDisplayMetrics());
final int cornerSizePx = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, (float) cornerDips,
context.getResources().getDisplayMetrics());
final Paint paint = new Paint();
final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
final RectF rectF = new RectF(rect);
// prepare canvas for transfer
paint.setAntiAlias(true);
paint.setColor(0xFFFFFFFF);
paint.setStyle(Paint.Style.FILL);
canvas.drawARGB(0, 0, 0, 0);
canvas.drawRoundRect(rectF, cornerSizePx, cornerSizePx, paint);
// draw bitmap
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
canvas.drawBitmap(bitmap, rect, rect, paint);
// draw border
paint.setColor(color);
paint.setStyle(Paint.Style.STROKE);
paint.setStrokeWidth((float) borderSizePx);
canvas.drawRoundRect(rectF, cornerSizePx, cornerSizePx, paint);
return output;
}
Credits, of course, to http://ruibm.com/?p=184
Problem
I used the below to make a bitmap with rounded corners. Now I want to draw a line around the bitmap. ``` private BitmapDrawable roundCornered(BitmapDrawable scaledBitmap, int i) { Bitmap bitmap = scaledBitmap.getBitmap(); result = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888); canvas = new Canvas(result); color = 0xff424242; paint = new Paint(); rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight()); rectF = new RectF(rect); roundPx = i; paint.setAntiAlias(true); canvas.drawARGB(0, 0, 0, 0); paint.setColor(Color.BLUE); canvas.drawRoundRect(rectF, roundPx, roundPx, paint); paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN)); canvas.drawBitmap(bitmap, rect, rect, paint); BitmapDrawable finalresult = new BitmapDrawable(result); return finalresult; } ``` I got the image below, but my actual need is that I must draw a border around the image.