Android Uri获取真实路径转换成File的方法

有的时候要将android uri如content://media/external/image/media/102这样格式转换成File类型或者获取真实文件路径,可以用以下方法:

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Uri uri = data.getData();  

String[] proj = { MediaStore.Images.Media.DATA };

Cursor actualimagecursor = managedQuery(uri,proj,null,null,null);

int actual_image_column_index = actualimagecursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);

actualimagecursor.moveToFirst();

String img_path = actualimagecursor.getString(actual_image_column_index);

File file = new File(img_path);
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