问android gridview图片设置可见性

EN

public void onItemClick(AdapterView<?> arg0, View arg1, int no,long lg) {
                // TODO Auto-generated method stub

                AlertDialog.Builder alert = new AlertDialog.Builder(MainActivity.this);
                id=no;
                alert.setTitle("Title");
                alert.setMessage("Message");
                alert.setIcon(flag[no]);

                // Set an EditText view to get user input 
                final EditText input = new EditText(MainActivity.this);
                alert.setView(input);

                alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int whichButton) {
                  String value = input.getText().toString();
                  // Do something with value!
                  System.out.println("mmmm"+value);
                  if(value.equalsIgnoreCase(country[id])){

                                 // here i want to set item visibility..

                  }
                  else
                    {}
                  }
                });

                alert.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                  public void onClick(DialogInterface dialog, int whichButton) {
                    // Canceled.
                  }
                });

                alert.show();
            }
        });