合并两个图片

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;?
? ? }?

如果要缩小比例

Bitmap scaledBitmap = Bitmap.createScaledBitmap(src, dstWidth, dstHeight, filter);?