Android拍照后图片旋转问题
16lz
2021-01-23
/** * 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);