在具有ALPHA_8配置的位图上调用getPixel（）将始终返回零。这似乎是一个错误
您可以通过将每个位图的像素存储为字节数组来解决此问题：
byte[] pixelData = getPixels(convert(bitmap, Bitmap.Config.ALPHA_8));... public byte[] getPixels(Bitmap bmp) { int bytes = bmp.getRowBytes() * bmp.getHeight(); ByteBuffer buffer = ByteBuffer.allocate(bytes); bmp.copyPixelsToBuffer(buffer); return buffer.array();}您将需要稍微修改碰撞检测功能：
public boolean isCollisionDetected(byte[] pixels1, Bitmap bitmap1, int x1, int y1, byte[] pixels2, Bitmap bitmap2, int x2, int y2) { int width1 =bitmap1.getWidth(); int height1=bitmap1.getHeight(); int width2 =bitmap2.getWidth(); int height2=bitmap2.getHeight(); Rect bounds1 = new Rect(x1, y1, x1 + width1, y1 + height1); Rect bounds2 = new Rect(x2, y2, x2 + width2, y2 + height2); if (Rect.intersects(bounds1, bounds2)) { Rect collisionBounds = getCollisionBounds(bounds1, bounds2); for (int i = collisionBounds.left; i < collisionBounds.right; i++) { for (int j = collisionBounds.top; j < collisionBounds.bottom; j++) { byte bitmap1Pixel = pixels1[((j - y1) * width1) + (i - x1)]; byte bitmap2Pixel = pixels2[((j - y2) * width2) + (i - x2)]; if (isFilled(bitmap1Pixel) && isFilled(bitmap2Pixel)) { return true; } } } } return false; }（…您可能希望将位图参数更改为这些位图的相应宽度和高度，然后调用recycle（）。）
