标签:android io os ar java 文件 c on r
步骤如下:
1.先读取图片文件被旋转的角度:
/** * 通过ExifInterface类读取图片文件的被旋转角度 * @param path : 图片文件的路径 * @return 图片文件的被旋转角度 */ public static int readPicDegree(String path) { int degree = 0; // 读取图片文件信息的类ExifInterface ExifInterface exif = null; try { exif = new ExifInterface(path); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } if (exif != null) { int orientation = exif.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; } } return degree; }
/** * 将图片纠正到正确方向 * * @param degree : 图片被系统旋转的角度 * @param bitmap : 需纠正方向的图片 * @return 纠向后的图片 */ public static Bitmap rotateBitmap(int degree, Bitmap bitmap) { Matrix matrix = new Matrix(); matrix.postRotate(degree); Bitmap bm = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true); return bm; }
标签:android io os ar java 文件 c on r
原文地址:http://blog.csdn.net/berber78/article/details/39778181