以相機意圖旋轉照片在人像模式下旋轉android

Question

照片成功地用相機拍攝，但在三星Galaxy S3的肖像模式下，圖片旋轉。我該如何解決這個問題。 相機意圖如下：

Intent intent = new Intent("android.media.action.IMAGE_CAPTURE"); 
     intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(xdestination)); 
     startActivityForResult(intent, CAMERA_PIC_REQUEST); 

在活動結果

if (requestCode==CAMERA_PIC_REQUEST){ 

      // Bitmap bm = (Bitmap) data.getExtras().get("data"); 

       Uri photo_uri = Uri.fromFile(xdestination); 

       Editer.PHOTO_FROM=11; 

       Bitmap decodeSampledBitmapFromFile=null; 
       try { 
        decodeSampledBitmapFromFile = decodeUri(photo_uri); 
       } catch (FileNotFoundException e1) { 
        // TODO Auto-generated catch block 
        e1.printStackTrace(); 
       } 

       ByteArrayOutputStream bytes = new ByteArrayOutputStream(); 
       decodeSampledBitmapFromFile.compress(Bitmap.CompressFormat.JPEG,100, bytes); 

       File f = new File(Environment.getExternalStorageDirectory(), "user_image.jpg"); 

       try { 

        if(f.exists()) 
         f.delete(); 

        f.createNewFile(); 

        FileOutputStream fo = new FileOutputStream(f); 
        fo.write(bytes.toByteArray()); 
        fo.close(); 

       } catch (IOException e) { 

        e.printStackTrace(); 
        Log.d("ERROR", e.toString()); 
       } 

      } 

Answer 1

嘗試它像下面。

File photo = new File(Environment.getExternalStorageDirectory(), "user_image.jpg"); 
     if (photo.exists()) { 
      Bitmap myBitmap = BitmapFactory.decodeFile(photo 
        .getAbsolutePath()); 
      imageView.setImageBitmap(myBitmap); 
      imageView.setRotation(90); 
     } 

第1步：給你的照片的完整路徑類似File photo = new File(Environment.getExternalStorageDirectory() , "Face.jpg");

第2步：查看圖片是否存在與否，如果是，那麼將它設置爲圖像視圖，並將其旋轉到90度。

Answer 2

用途：

public int getCameraPhotoOrientation(Context context, Uri imageUri, String imagePath){ 
    int rotate = 0; 
    try { 
     context.getContentResolver().notifyChange(imageUri, null); 
     File imageFile = new File(imagePath); 

     ExifInterface exif = new ExifInterface(imageFile.getAbsolutePath()); 
     int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL); 

     switch (orientation) { 
     case ExifInterface.ORIENTATION_ROTATE_270: 
      rotate = 270; 
      break; 
     case ExifInterface.ORIENTATION_ROTATE_180: 
      rotate = 180; 
      break; 
     case ExifInterface.ORIENTATION_ROTATE_90: 
      rotate = 90; 
      break; 
     } 

     Log.i("RotateImage", "Exif orientation: " + orientation); 
     Log.i("RotateImage", "Rotate value: " + rotate); 
    } catch (Exception e) { 
     e.printStackTrace(); 
    } 
    return rotate; 
} 

Answer 3

通過你拍攝的照片和圖片變成下面的方法，這將返回正確的導向畫面的SD卡路徑...

private Bitmap imageOreintationValidator(Bitmap bitmap, String path) { 

    ExifInterface ei; 
    try { 
     ei = new ExifInterface(path); 
     int orientation = ei.getAttributeInt(ExifInterface.TAG_ORIENTATION, 
       ExifInterface.ORIENTATION_NORMAL); 
     switch (orientation) { 
     case ExifInterface.ORIENTATION_ROTATE_90: 
      bitmap = rotateImage(bitmap, 90); 
      break; 
     case ExifInterface.ORIENTATION_ROTATE_180: 
      bitmap = rotateImage(bitmap, 180); 
      break; 
     case ExifInterface.ORIENTATION_ROTATE_270: 
      bitmap = rotateImage(bitmap, 270); 
      break; 
     } 
    } catch (IOException e) { 
     e.printStackTrace(); 
    } 

    return bitmap; 
} 

private Bitmap rotateImage(Bitmap source, float angle) { 

    Bitmap bitmap = null; 
    Matrix matrix = new Matrix(); 
    matrix.postRotate(angle); 
    try { 
     bitmap = Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(), 
       matrix, true); 
    } catch (OutOfMemoryError err) { 
     err.printStackTrace(); 
    } 
    return bitmap; 
} 

Answer 4

你沒有選擇，只能讀將圖像旋轉並將結果寫回SD卡。直接的方法，使用BitmapFactory，將很容易run into OutOfMemory exception。可以使用JPEG lossless rotation，使用jpegtran。

在SourceForge上，有一個Java開源類LLJTran。 Android端口是on GitHub。