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**How to Properly Set a Listener for a Checkbox in Android?**

Patricia Arquette
Patricia ArquetteOriginal
2024-10-26 16:29:30761browse

**How to Properly Set a Listener for a Checkbox in Android?**

Android Checkbox Listener: Resolving the OnCheckedChangeListener Issue

When utilizing a CheckBox in Android, you may encounter the need to attach a listener to track its checked state changes. However, it's essential to use the appropriate listener to avoid compilation errors.

The code you provided attempts to set a listener on a CheckBox using the setOnCheckedChangeListener(OnCheckedChangeListener) method, which is intended for RadioGroups. This incompatibility results in Eclipse flagging the code as incorrect.

Solution

To correctly set a listener on a CheckBox, you should use the setOnCheckedChangeListener(CompoundButton.OnCheckedChangeListener) method instead. Here's the corrected code:

satView.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

    @Override
    public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {
        // perform logic
    }
});     

In this updated code, CompoundButton.OnCheckedChangeListener is the correct listener interface for CheckBoxes. The buttonView parameter represents the CheckBox that generated the event, and isChecked indicates the new checked state of the CheckBox.

By using the correct listener interface, you can effectively monitor the check state changes of your CheckBox and perform the desired actions accordingly.

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