如何处理来自Dropbox等外部源的图像的图像路径

Question

我开发了图像裁剪器，这样用户就可以裁剪从图库中选择的图像。当用户用相机拍摄或从图库中选择一张图片时，通过查询图像uri获取图像元数据，并将图像文件路径传递给各种位图方法进行位图创建。

01-08 09:11:21.051: I/DROPBOX(2761): file:///storage/emulated/0/Android/data/com.dropbox.android/files/u98667695/scratch/Capture.PNG

    private void getImageData(Uri selectedImage){

        String[] filePathColumn = { MediaStore.Images.Media.DATA };
        String[] fileOrientationColumn = { MediaStore.Images.Media.ORIENTATION };

        Cursor cursor = context.getContentResolver().query(selectedImage,
                filePathColumn, null, null, null);
/*      if(cursor == null){
            imageFilePath = selectedImage.toString().substring(6);
            return;
        }
*/      cursor.moveToFirst();
        int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
        imageFilePath = cursor.getString(columnIndex);

        Log.i("CURSOR path", imageFilePath);

        cursor = context.getContentResolver().query(selectedImage,
                fileOrientationColumn, null, null, null);
        cursor.moveToFirst();
        columnIndex = cursor.getColumnIndex(fileOrientationColumn[0]);
        String fileOrientation = cursor.getString(columnIndex);

        // Izmena
        if(fileOrientation == null)fileOrientation = "0";

        imageOrientation = Integer.parseInt(fileOrientation);
        cursor.close();     

        Log.i("CURSOR orientation", fileOrientation);

    }

Answer 1

在上述情况下，您可以执行以下操作。

String filePath="I/DROPBOX(2761): file:///storage/emulated/0/Android/data/com.dropbox.android/files/u98667695/scratch/Capture.PNG";
int firstIndex=filePath.indexOf("file");
String actualPath=filePath.subString(firstIndex);

因此，actualPath包含如下所示的必需路径，与根目录或文件位置无关。

actualPath="file:///storage/emulated/0/Android/data/com.dropbox.android/files/u98667695/scratch/Capture.PNG"