android两张片合成一张,android 两张片叠放

合成两张图片

通过canvas绘制合成

private Bitmap mergeBitmap(Bitmap firstBitmap, Bitmap secondBitmap) { int w1 = firstBitmap.getWidth(); int h1 = firstBitmap.getHeight(); int w2 = secondBitmap.getWidth(); int h2 = secondBitmap.getHeight(); int space = 20; Bitmap bitmap = Bitmap.createBitmap(w1, h1 + h2 + 40, firstBitmap.getConfig()); Canvas canvas = new Canvas(bitmap); canvas.drawRGB(255, 255, 255); canvas.drawBitmap(firstBitmap, new Matrix(), null); int left = w1 - w2 > 0 ? ((w1 - w2) / 2) : 0; canvas.drawBitmap(secondBitmap, left, h1 + 20, null); return bitmap; }

代码很简单，代码是将两张图片上下衔接。