android - Get Path of Gallery Image Xamarin? -


i trying path of gallery image. getting path of image stored in internal storage not of external storage. have enabled read-write storage , camera access permissions has been granted. here code

    void choosephoto()     {         try         {             var imageintent = new intent();             imageintent.settype("image/*");             imageintent.setaction(intent.actiongetcontent);             startactivityforresult(intent.createchooser(imageintent, "select photo"), 0);         }         catch (exception ex)         {             throw ex;         }     }   protected override void onactivityresult(int requestcode, result resultcode, intent data)     {         base.onactivityresult(requestcode, resultcode, data);          if (requestcode == camera_capture)         {         // camera operation         }         else         {             console.writeline("choose pic gallery");             var uri = data.data;             var path = getrealpathfromuri(uri); //path returns null when select image external storage;         }     }     private string getrealpathfromuri(uri contenturi)     {         string[] proj = { mediastore.images.imagecolumns.data };         string result;         var cursor = contentresolver.query(contenturi, proj, null, null, null);         if (cursor == null)             result = contenturi.path;         else         {             int idx= cursor.getcolumnindex(mediastore.images.imagecolumns.data);             cursor.movetofirst();             result = cursor.getstring(idx);             cursor.close();         }         return result;     }

i want selected image path have choose gallery

the problem change android.net.uri path, here solution :

private string getpathtoimage(android.net.uri uri) {     string doc_id = "";     using (var c1 = contentresolver.query(uri, null, null, null, null))     {         c1.movetofirst();         string document_id = c1.getstring(0);         doc_id = document_id.substring(document_id.lastindexof(":") + 1);     }      string path = null;      // projection contains columns want return in our query.     string selection = android.provider.mediastore.images.media.interfaceconsts.id + " =? ";     using (var cursor = contentresolver.query(android.provider.mediastore.images.media.externalcontenturi, null, selection, new string[] { doc_id }, null))     {         if (cursor == null) return path;         var columnindex = cursor.getcolumnindexorthrow(android.provider.mediastore.images.media.interfaceconsts.data);         cursor.movetofirst();         path = cursor.getstring(columnindex);     }     return path; }

when choose picture gallery :

choosephoto(); ...  protected override void onactivityresult(int requestcode, result resultcode, intent data) {     base.onactivityresult(requestcode, resultcode, data);     if (requestcode == 0)     {         var uri = data.data;         var path = getpathtoimage(uri);         system.diagnostics.debug.writeline("image path == " + path );         //my result ==> [0:] image path == /storage/emulated/0/dcim/camera/img_20170813_223324.jpg     }  }

most important, when use method, maybe come across problem :

java.lang.securityexception: permission denial: reading com.android.providers.media.mediaprovider uri content://media/external/images/media pid=21975, uid=10417 requires android.permission.read_external_storage, or granturipermission()

when api >= 23, requesting permissions @ run time, users grant permissions apps while app running, not when install app. should check if have android.permission.read_external_storage permission, if not, need request permissions.


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