Android - รบกวนสอบถามเกี่ยวกับการคลิก เพื่อขยายรูปในหน้าของ GridView หน่ะครับ

  final AlertDialog.Builder imageDialog = new AlertDialog.Builder(getApplicationContext());
    		    	        final LayoutInflater inflater = (LayoutInflater) this.getSystemService(LAYOUT_INFLATER_SERVICE);
    		    	        
    		    	      //Onclick 
    		    	        gridV.setOnItemClickListener(new OnItemClickListener() {
    		    				@Override
    		    				
    		    				public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
			            
    		    			            View layout = inflater.inflate(R.layout.activity_album_dialog,
    		    		                        (ViewGroup) findViewById(R.id.Imagesfull));
    		    			            ImageView image = (ImageView) layout.findViewById(R.id.imageDialog);
    		    			            
    		    			       	 try
    		    		           	 {
    		    		           		
    		    		           	  image.setImageBitmap((Bitmap)MyArrList.get(position).get("ImagePathBitmap"));
    		    		            	 } catch (Exception e) {
    		    		           		 // When Error
    		    		           		image.setImageResource(android.R.drawable.ic_menu_report_image);
    		    		           	 }
    		    					
    		    	                imageDialog.setIcon(android.R.drawable.btn_star_big_on);	
    		    	        		imageDialog.setTitle("View : ");
    		    	                imageDialog.setView(layout);
    		    	                imageDialog.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener(){

    		    		                    public void onClick(DialogInterface dialog, int which) {
    		    		                        dialog.dismiss();
    		    		                    }

    		    		                });


    		    		                imageDialog.create();
    		    		                imageDialog.show(); 
    		    			            
    		    				}
        	
    		    			});