uri,file,path互相转化

uri转file:

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file = new File(new URI(uri.toString()));  

uri转path:

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1. private String getPath(Uri uri) {  

2.        String[] projection = {MediaStore.Video.Media.DATA};  

3.        Cursor cursor = managedQuery(uri, projection, null, null, null);  

4.        int column_index = cursor  

5.                .getColumnIndexOrThrow(MediaStore.Audio.Media.DATA);  

6.        cursor.moveToFirst();  

7.        return cursor.getString(column_index);  

8.    }  

file转uri:

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1. URI uri = file.toURI();  

file转path:

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1. String path = file.getPath()  

path转uri:

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1. Uri uri = Uri.parse(path);  

path转file:

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1. File file = new File(path)  

2.