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[Android] BitmapHelper Class

Author: zemna
Date: April 17, 2021
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BitmapHelper 클래스는 인자로 넘겨받은 비트맵 이미지의 모서리를 둥글게 처리한 비트맵으로 변경하여 리턴하는 클래스이다.


[code lang="java"] import android.content.Context; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Paint; import android.graphics.PorterDuffXfermode; import android.graphics.Rect; import android.graphics.RectF; import android.graphics.Bitmap.Config; import android.graphics.PorterDuff.Mode;

public class BitmapHelper {

public static Bitmap getRoundedCornerBitmap(Context context, Bitmap bitmap , int roundLevel) {

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()); final RectF rectF = new RectF(rect); final float roundPx = convertDipsToPixels(context, roundLevel);

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(bitmap, rect, rect, paint);

return output; }

public static int convertDipsToPixels(Context context, int dips) {

final float scale = context.getResources().getDisplayMetrics().density; return (int) (dips * scale + 0.5f); }

} [/code]

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