三星手机的问题 :竖着拍照 ,保存的照片确是横着的,

 

下面上代码,

  /***  file:  照片文件*  quality:新生成的照片压缩质量*/@Throws(FileNotFoundException::class)fun compressImageAndSave(file: File, quality: Int): String {var bm = BitmapFactory.decodeFile(file.absolutePath)val degree = readPictureDegree(file.absolutePath)if (degree != 0) {//旋转照片角度bm = rotateBitmap(bm, degree)}val out = FileOutputStream(file.absolutePath)bm!!.compress(Bitmap.CompressFormat.JPEG, quality, out)return file.path}/*** 旋转图片*/fun rotateBitmap(bitmap: Bitmap?, degress: Int): Bitmap? {var bitmap = bitmapif (bitmap != null) {val m = Matrix()m.postRotate(degress.toFloat())bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.width,bitmap.height, m, true)return bitmap}return bitmap}/*** 读取照片的旋转角度*/fun readPictureDegree(path: String): Int {var degree = 0try {val exifInterface = ExifInterface(path)val orientation = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION,ExifInterface.ORIENTATION_NORMAL)when (orientation) {ExifInterface.ORIENTATION_ROTATE_90 -> degree = 90ExifInterface.ORIENTATION_ROTATE_180 -> degree = 180ExifInterface.ORIENTATION_ROTATE_270 -> degree = 270}} catch (e: IOException) {e.printStackTrace()}return degree}

 

用的话 只要一行compressImageAndSave(mTmpFile,100);

这里拿到拍完照的照片定义为mTmpFile,然后根据照片旋转的角度,  我断点 orientation 得到是这个

public static final int ORIENTATION_ROTATE_90 = 6;  // rotate 90 cw to right it

根据实际拍到的图片 是逆时针转了90度

所以 我们只要顺时针再转90就能解决这个问题,对于英文的这个注释我也不是很懂

 

 

下面是别人给我的方法:

仅供参考

public static String compressImageAndSave(String imageDir, String filePath, String fileName, int q) throws FileNotFoundException {Bitmap bm = getSmallBitmap(filePath);int degree = readPictureDegree(filePath);if (degree != 0) {//旋转照片角度bm = rotateBitmap(bm, degree);}File outputFile = new File(imageDir, fileName);FileOutputStream out = new FileOutputStream(outputFile);bm.compress(Bitmap.CompressFormat.JPEG, q, out);return outputFile.getPath();}