Android: Uri to File -

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I need to send a file through httppost. The image uri has been returned after clicking on the image But I can not make the file from the given Yuri.

I tried: 

  New file (mediaUri.getPath ()); // Error: There is no such file or new file (MediaURI); New file ("file: //" + mediaUri.getPath ());   
 But nothing works. Can anyone help?   
 
 
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