我正在尝试将图像水印添加到另一个图像。我有以下代码,但我遇到了问题。我不知道'资源资源'是什么。
有人可以帮忙吗?
public static Bitmap addWatermark(Resources res, Bitmap source)
{
int w, h;
Canvas c;
Paint paint;
Bitmap bmp, watermark;
Matrix matrix;
float scale;
RectF r;
w = source.getWidth();
h = source.getHeight();
bmp = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
paint = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.DITHER_FLAG |Paint.FILTER_BITMAP_FLAG);
c = new Canvas(bmp);
c.drawBitmap(source, 0, 0, paint);
watermark = BitmapFactory.decodeResource(res, R.drawable.android_mo);
scale = (float) (((float) h * 0.10) / (float) watermark.getHeight());
matrix = new Matrix();
matrix.postScale(scale, scale);
r = new RectF(0, 0, watermark.getWidth(), watermark.getHeight());
matrix.mapRect(r);
matrix.postTranslate(w - r.width(), h - r.height());
c.drawBitmap(watermark, matrix, paint);
watermark.recycle();
return bmp;
}
答案 0 :(得分:1)
您可以通过activity.getResources()
或fragment.getResources()
答案 1 :(得分:1)
Resources res
是您需要从调用的Activity / Fragment中传递的资源对象。
假设,如果该方法在Utility类中,则以
调用该方法//Add watermark to the selected image
Bitmap markedBitmap = Utility.addWatermark(context.getResources(), bitmap);
答案 2 :(得分:0)
主位图是bmp1和bmp2 transparante位图:
public static Bitmap overlay(Bitmap bmp1, Bitmap bmp2) {
Bitmap bmOverlay = Bitmap.createBitmap(bmp1.getWidth(), bmp1.getHeight(), bmp1.getConfig());
Canvas canvas = new Canvas(bmOverlay);
canvas.drawBitmap(bmp1, new Matrix(), null);
canvas.drawBitmap(bmp2, 0, 0, null);
return bmOverlay;
}