如何剪切位图的中间区域? 这是我的示例代码:
public void onPictureTaken(byte[] paramArrayOfByte, Camera paramCamera)
{
FileOutputStream fileOutputStream = null;
try {
File saveDir = new File("/sdcard/CameraExample/");
if (!saveDir.exists())
{
saveDir.mkdirs();
}
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 5;
Bitmap myImage = BitmapFactory.decodeByteArray(paramArrayOfByte, 0,paramArrayOfByte.length, options);
Bitmap bmpResult = Bitmap.createBitmap(myImage.getWidth(), myImage.getHeight(),Config.RGB_565);
int length = myImage.getHeight()*myImage.getWidth();
int[] pixels = new int[length];
myImage.getPixels(pixels, 0, myImage.getWidth(), 0,0, myImage.getWidth(), myImage.getHeight());
Bitmap TygolykovLOL = Bitmap.createBitmap(pixels, 0, myImage.getWidth(), myImage.getWidth(),myImage.getHeight(), Config.RGB_565);
Paint paint = new Paint();
Canvas myCanvas = new Canvas(bmpResult);
myCanvas.drawBitmap(TygolykovLOL, 0, 0, paint);
fileOutputStream = new FileOutputStream("/sdcard/CameraExample/" + "1ggggqqqqGj2.bmp");
BufferedOutputStream bos = new BufferedOutputStream(fileOutputStream );
bmpResult.compress(CompressFormat.PNG, 100, bos);
bos.flush();
bos.close();
答案 0 :(得分:8)
您可能希望使用createBitmap
的其他重载 - 它具有x,y,width和height参数,您可以使用这些参数将位图的中间部分裁剪为新的位图。
这样的事情:
Bitmap cropped = Bitmap.createBitmap(sourceBitmap, 50, 50, sourceBitmap.getWidth() - 100, sourceBitmap.getHeight() - 100);
从边缘剪切50像素的所有内容。