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copied!<p>Well, we would need a bit more information to help you. However, I assume you are trying to use the <a href="http://developer.android.com/reference/android/widget/CompoundButton.OnCheckedChangeListener.html" rel="nofollow">OnCheckedChangeListener</a> which is implemented by your main Activity? If you are having trouble with referencing IDs, you can always just implement an individual lisenter on a specific element, for example:</p> <pre><code>checkBox.setOnCheckedChangeListener(new OnCheckedChangeListener() { public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { if ( isChecked ) { prevChecked = true; Log.d("CHECKBOX","Previously Checked = "+prevChecked); }else{ prevChecked = false; Log.d("CHECKBOX","Previously Checked = "+prevChecked); } } }); </code></pre> <p>Where prevChecked is a global variable. I have also thrown in a couple of Log's so you can output the information to the LogCat. Hope that helps in your debugging.</p> <p><em><strong></em>**<em>*</em>**</strong> EDIT TO SUIT YOUR ADDED COMMENT <strong><em>*</em>**<em>*</em>**<em>*</em>**<em>*</em>***</strong></p> <p>Have you tried to swap your switch statement with and if statement. e.g.</p> <pre><code>if(v.getId() == R.id.checkbox1){ }else if(v.getId() == R.id.checkbox2){ } </code></pre> <p>Additionally, what interface is <code>onCheckboxClicked(View v)</code>, is this a custom element? How have you defined your check boxes in your R.layout.activity_main.xml? If you have a checkbox interface you need to implement a listener like my example above. I can't see that your setting a listener anywhere, nor are you implementing it in your activity. For example:</p> <pre><code>public class MainActivity extends Activity implements onCheckChangedListener { </code></pre> <p>But as far as I can tell, unless it is a custom element it doesn't make any sense that <code>public void onCheckboxClicked(View v)</code> Even get's called. This <a href="http://vimaltuts.com/androids/android-checkbox-example" rel="nofollow">example</a> might help.</p>

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