旋转从相机或画廊拍摄的图像 [英] Rotate image taken from camera or gallery

问题描述

我从相机捕捉图像并从图库中选择图像。在三星设备中，图像在捕获后会旋转。

我想将图像旋转成直线。

<我尝试这样做但是没有用。尽管图像旋转，但我的EXIF方向始终为0。

  private void onCaptureImageResult（Intent data）{
 
 try {
 
位图缩略图=（位图）data.getExtras（）。get（data）; 
 
 Uri tempUri = getImageUri（getApplicationContext（），thumbnail）; 
 
 //调用此方法获取实际路径
文件finalFile = new File（getRealPathFromURI（tempUri））; 
 
 ExifInterface ei = new ExifInterface（String.valueOf（finalFile））; 
 int orientation = ei.getAttributeInt（ExifInterface.TAG_ORIENTATION，
 ExifInterface.ORIENTATION_UNDEFINED）; 
 
 Bitmap bitmap = BitmapFactory.decodeFile（String.valueOf（finalFile））; 
 
 Bitmap rotateBitmap = null; 
 
开关（方向）{
案例ExifInterface.ORIENTATION_ROTATE_90：
 rotateBitmap = rotateImage（bitmap，90）; 
休息; 
 case ExifInterface.ORIENTATION_ROTATE_180：
 rotateBitmap = rotateImage（bitmap，180）; 
休息; 
 case ExifInterface.ORIENTATION_ROTATE_270：
 rotatingBitmap = rotateImage（bitmap，270）; 
休息; 
 case ExifInterface.ORIENTATION_NORMAL：
默认值：
 rotateBitmap = bitmap; 
休息; 
} 
 
 if（rotateBitmap！= null）
 {
 profile_image.setImageBitmap（rotatingBitmap）; 
 thumbnail = rotatingBitmap; 
} 
} 
 catch（IOException ex）{} 
 
 
 public Uri getImageUri（Context inContext，Bitmap inImage）{
 ByteArrayOutputStream bytes = new ByteArrayOutputStream（）; 
 inImage.compress（Bitmap.CompressFormat.PNG，100，bytes）; 
 String path = MediaStore.Images.Media.insertImage（inContext.getContentResolver（），inImage，Title，null）; 
返回Uri.parse（路径）; 
} 
 
 public String getRealPathFromURI（Uri uri）{
 Cursor cursor = getContentResolver（）。query（uri，null，null，null，null）; 
 cursor.moveToFirst（）; 
 int idx = cursor.getColumnIndex（MediaStore.Images.ImageColumns.DATA）; 
返回cursor.getString（idx）; 
} 
 
 public static Bitmap rotateImage（Bitmap source，float angle）{
 Matrix matrix = new Matrix（）; 
 matrix.postRotate（angle）; 
返回Bitmap.createBitmap（source，0,0，source.getWidth（），source.getHeight（），matrix，
 true）; 
} 
  

这里出了什么问题？请帮忙..谢谢..

解决方案

替换

  int orientation = ei.getAttributeInt（ExifInterface.TAG_ORIENTATION，ExifInterface.ORIENTATION_UNDEFINED）; 
  

使用

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

告诉它是否有效

I am capturing image from camera and selecting image from gallery. In samsung devices the images gets rotate after captured.

I want to rotate image to straight if they are rotated.

I tried to do it but its not working. I am getting EXIF orientation as 0 always though the image is rotated.

private void onCaptureImageResult(Intent data) {

    try {

    Bitmap thumbnail = (Bitmap) data.getExtras().get("data");

    Uri tempUri = getImageUri(getApplicationContext(), thumbnail);

    // CALL THIS METHOD TO GET THE ACTUAL PATH
    File finalFile = new File(getRealPathFromURI(tempUri));

        ExifInterface ei = new ExifInterface(String.valueOf(finalFile));
        int orientation = ei.getAttributeInt(ExifInterface.TAG_ORIENTATION,
                ExifInterface.ORIENTATION_UNDEFINED);

        Bitmap bitmap = BitmapFactory.decodeFile(String.valueOf(finalFile));

        Bitmap rotatedBitmap = null;

        switch (orientation) {
            case ExifInterface.ORIENTATION_ROTATE_90:
                rotatedBitmap = rotateImage(bitmap, 90);
                break;
            case ExifInterface.ORIENTATION_ROTATE_180:
                rotatedBitmap = rotateImage(bitmap, 180);
                break;
            case ExifInterface.ORIENTATION_ROTATE_270:
                rotatedBitmap = rotateImage(bitmap, 270);
                break;
            case ExifInterface.ORIENTATION_NORMAL:
            default:
                rotatedBitmap = bitmap;
                break;
        }

        if(rotatedBitmap != null)
        {
            profile_image.setImageBitmap(rotatedBitmap);
            thumbnail = rotatedBitmap;
        }
    }
    catch (IOException ex) {     }


  public Uri getImageUri(Context inContext, Bitmap inImage) {
    ByteArrayOutputStream bytes = new ByteArrayOutputStream();
    inImage.compress(Bitmap.CompressFormat.PNG, 100, bytes);
    String path = MediaStore.Images.Media.insertImage(inContext.getContentResolver(), inImage, "Title", null);
    return Uri.parse(path);
}

public String getRealPathFromURI(Uri uri) {
    Cursor cursor = getContentResolver().query(uri, null, null, null, null);
    cursor.moveToFirst();
    int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
    return cursor.getString(idx);
}

public static Bitmap rotateImage(Bitmap source, float angle) {
    Matrix matrix = new Matrix();
    matrix.postRotate(angle);
    return Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(), matrix,
            true);
}

What is going wrong here? Please help.. Thank you..

解决方案

Replace

int orientation = ei.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_UNDEFINED);

With

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

And tell if it works

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