/**

* 读取照片exif信息中的旋转角度

*

* @return角度 获取从相册中选中图片的角度

*/

public static float readPictureDegree(String path) {

int degree = 0;

try {

ExifInterface exifInterface = new ExifInterface(path);

int orientation = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);

switch (orientation) {

case ExifInterface.ORIENTATION_ROTATE_90:

degree = 90;

break;

case ExifInterface.ORIENTATION_ROTATE_180:

degree = 180;

break;

case ExifInterface.ORIENTATION_ROTATE_270:

degree = 270;

break;

}

} catch (Exception e) {

e.printStackTrace();

}

return degree;

}

/**

* 旋转图片，使图片保持正确的方向。

*/

public static Bitmap rota(float degrees,Bitmap bitmap){

Matrix matrix = new Matrix();

matrix.setRotate(degrees, bitmap.getWidth() / 2, bitmap.getHeight() / 2);

Bitmap bmp = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);

if (null != bitmap) {

bitmap.recycle();

}

return bmp;

}