Android应用中怎么对图片进行压缩

 private Bitmap compressPixel(String filePath){  Bitmap bmp = null;  BitmapFactory.Options options = new BitmapFactory.Options();  //setting inSampleSize value allows to load a scaled down version of the original image  options.inSampleSize = 2;  //inJustDecodeBounds set to false to load the actual bitmap  options.inJustDecodeBounds = false;  options.inTempStorage = new byte[16 * 1024];  try {   //load the bitmap from its path   bmp = BitmapFactory.decodeFile(filePath, options);   if (bmp == null) {    InputStream inputStream = null;    try {     inputStream = new FileInputStream(filePath);     BitmapFactory.decodeStream(inputStream, null, options);     inputStream.close();    } catch (FileNotFoundException exception) {     exception.printStackTrace();    } catch (IOException exception) {     exception.printStackTrace();    }   }  } catch (OutOfMemoryError exception) {   exception.printStackTrace();  }finally {   return bmp;  } }