/**
* 读取图片属性:旋转的角度
* @param path 图片绝对路径
* @return degree旋转的角度
*/
public static int 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 (IOException e) {
e.printStackTrace();
}
return degree;
}
/**
* 旋转图片
*
* @param angle
* @param bitmap
* @return Bitmap
*/
public static Bitmap rotaingImageView(int angle, Bitmap bitmap) {
//旋转图片 动作
Matrix matrix = new Matrix();
matrix.postRotate(angle);
// 创建新的图片
Bitmap resizedBitmap = Bitmap.createBitmap(bitmap, 0, 0,
bitmap.getWidth(), bitmap.getHeight(), matrix, true);
return resizedBitmap;
}
//获取图片的旋转角度,有些系统把拍照的图片旋转了,有的没有旋转
int degree = AppUtils.readPictureDegree(mPicPath);
BitmapFactory.Options opts=new BitmapFactory.Options();//获取缩略图显示到屏幕上
opts.inSampleSize = 2;
Bitmap cbitmap = BitmapFactory.decodeFile(mPicPath,opts);
//把图片旋转为正的方向
Bitmap resultBitmap = AppUtils.rotaingImageView(degree, cbitmap);