private static boolean rotateImage(
String imageFile, String outputFile, int quality, Bitmap.CompressFormat compressFormat) {
int degree = ImageUtils.getExifOrientation(imageFile);
if (degree != 0) {
Log.i(TAG, "rotate image from:" + degree);
Bitmap origin = BitmapFactory.decodeFile(imageFile);
Bitmap rotate = ImageUtils.rotateImage(degree, origin);
if (rotate != null) {
ImageUtils.saveBitmap(rotate, outputFile, compressFormat, quality);
rotate.recycle();
origin.recycle();
return true;
} else {
Log.i(TAG, "rotate image failed:" + imageFile);
Log.i(TAG, "use origin image");
}
origin.recycle();
}
return false;
}
/**
* 压缩图片文件
*
* @param srcFile 源文件
* @param dstFile 目标文件
* @param maxWidth 最大宽度
* @param maxHeight 最大高度
* @return true进行了压缩，false无需压缩
*/
public static boolean compressImageFile(
String srcFile,
String dstFile,
int maxWidth,
int maxHeight,
int quality,
Bitmap.CompressFormat compressFormat) {
Log.i(TAG, "compress file:" + srcFile);
Log.i(TAG, "file length:" + (int) (new File(srcFile).length() / 1024d) + "kb");
Log.i(TAG, "output size:(" + maxWidth + ", " + maxHeight + ")");
BitmapFactory.Options decodeOptions = new BitmapFactory.Options();
decodeOptions.inJustDecodeBounds = true;
BitmapFactory.decodeFile(srcFile, decodeOptions);
int actualWidth = decodeOptions.outWidth;
int actualHeight = decodeOptions.outHeight;
Log.i(TAG, "input size:(" + actualWidth + ", " + actualHeight + ")");
if (actualWidth < maxWidth && actualHeight < maxHeight) {
Log.i(TAG, "stop compress: input size < output size");
return rotateImage(srcFile, dstFile, quality, compressFormat);
}
int sampleSize;
int w;
int h;
if (actualWidth * maxHeight > maxWidth * actualHeight) {
w = maxWidth;
h = (int) (w * actualHeight / (double) actualWidth);
sampleSize = (int) (actualWidth / (double) maxWidth);
} else {
h = maxHeight;
w = (int) (h * actualWidth / (double) actualHeight);
sampleSize = (int) (actualHeight / (double) maxHeight);
}
Log.i(TAG, "in simple size:" + sampleSize);
decodeOptions.inJustDecodeBounds = false;
decodeOptions.inSampleSize = sampleSize;
decodeOptions.inPreferredConfig = Bitmap.Config.RGB_565;
decodeOptions.inPurgeable = true;
decodeOptions.inInputShareable = true;
Bitmap bitmap = null;
try {
bitmap = BitmapFactory.decodeFile(srcFile, decodeOptions);
} catch (OutOfMemoryError error) {
error.printStackTrace();
Log.i(
TAG, "OutOfMemoryError:" + srcFile + ", size(" + actualWidth + ", " + actualHeight + ")");
}
if (bitmap == null) {
Log.i(TAG, "stop compress:decode file error");
return false;
}
Log.i(TAG, "origin bitmap size:(" + bitmap.getWidth() + ", " + bitmap.getHeight() + ")");
if (bitmap.getWidth() > maxWidth || bitmap.getHeight() > maxHeight) {
Bitmap tempBitmap = Bitmap.createScaledBitmap(bitmap, w, h, true);
bitmap.recycle();
bitmap = tempBitmap;
Log.i(TAG, "scale down:(" + bitmap.getWidth() + ", " + bitmap.getHeight() + ")");
}
int degree = ImageUtils.getExifOrientation(srcFile);
if (degree != 0) {
Log.i(TAG, "rotate image from:" + degree);
Bitmap rotate = ImageUtils.rotateImage(degree, bitmap);
bitmap.recycle();
bitmap = rotate;
}
ImageUtils.saveBitmap(bitmap, dstFile, compressFormat, quality);
Log.i(TAG, "output file length:" + (int) (new File(dstFile).length() / 1024d) + "kb");
Log.i(TAG, "------------------ compress file complete ---------------");
return true;
}