Try changing the id and see if it makes any difference.
-Dan
On Tue, Mar 17, 2009 at 9:46 AM, zeeshan <genx...@gmail.com> wrote:
>
> Hi Android Experts,
>
> why CheckBox is always null.
>
> please find the error in my code:
>
> xml-
>
> <CheckBox id="@+id/checkbox"
> android:layout_width="wrap_content"
> android:layout_height="wrap_content"
> />
>
> code file-
>
> package com.reblogr.reblogrclient;
>
>
>
>
>
> public class Test extends Activity {
> /** Called when the activity is first created. */
>
> public CheckBox checkbox;
>
> @Override
> public void onCreate(Bundle savedInstanceState) {
>
> super.onCreate(savedInstanceState);
> setContentView(R.layout.login);
> Button connectButton = (Button)findViewById(R.id.objBtn1);
>
> checkbox= (CheckBox)findViewById(R.id.checkbox);
>
> connectButton.setOnClickListener(connectButtonListener);
> }
> public OnClickListener connectButtonListener = new OnClickListener
> ()
> {
> public void onClick(View v)
> {
>
> Athenticate();
>
>
>
> }
> };
> public void Athenticate(){
>
> if(checkbox.isChecked()){ //
> NullPointerException here
> //do something
>
> }
>
>
> }
>
> }
>
> why checkbox is null?
> >
>
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