从 inputStream 获取文件路径

Question

我正在从图库中加载图片并将其设置为图像视图，但我有一个旋转图像的功能，并且该功能需要图像 Uri。当我从内存中读取图片时，我使用以下代码

if(ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED){
        ActivityCompat.requestPermissions(this, new String[] {Manifest.permission.READ_EXTERNAL_STORAGE}, EXTERNAL_STORAGE_PERMISSION);
    }else{
        Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
        photoPickerIntent.setType("image/*");
        startActivityForResult(photoPickerIntent, SELECT_FILE);
    }

然后

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if(requestCode == SELECT_FILE){
        if(resultCode == RESULT_OK){
            imageUri = data.getData();
            InputStream imageStream = null;
            try {
                imageStream = getContentResolver().openInputStream(imageUri);
            }catch (IOException e){e.printStackTrace();}
            final Bitmap selectedImage = BitmapFactory.decodeStream(imageStream);
            final Bitmap rotatedImage = rotateBitmap(selectedImage, **image file path**);
            profilePic.setImageBitmap(rotatedImage);
        }
    }
}

函数rotateBitmap()需要图片的文件路径，不知如何获取...

Answer 1

使用光标：

Uri selectedImageUri = data.getData();
String[] proj = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(selectedImageUri, proj, null, null, null);
if (cursor.moveToFirst()) {
    int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
    String  file_path = cursor.getString(column_index);
}
cursor.close();

Answer 2

使用Uri你可以得到图片的路径... 试试这个代码，可能对你有帮助

    Cursor cursor = getContentResolver().query(Use_Uri_Here, null, null, null, null); 
cursor.moveToFirst(); 
int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA); 
String imagePath = cursor.getString(idx);

从 inputStream 获取文件路径

Get filepath from inputStream

file-io

android

image

inputstream