This is a simple example showing how to listen to checkbox in android. To check whether the checkbox is in on state or in off state just add a listener to the checkbox you want to listen.
This is how we do this.
ch.setOnCheckedChangeListener(new OnCheckedChangeListener() {
});
This is the layout contaning a checkbox.
<? xml version = "1.0" encoding = "utf-8" ?> < LinearLayout xmlns:android = "http://schemas.android.com/apk/res/android" android:orientation = "vertical" android:layout_width = "fill_parent" android:layout_height = "fill_parent" > < TextView android:layout_width = "fill_parent" android:layout_height = "wrap_content" android:text = "Coderzheaven CheckBox Demo" /> < CheckBox android:text = "Check Me" android:id = "@+id/CheckBox01" android:layout_width = "wrap_content" android:layout_height = "wrap_content" > </ CheckBox > </ LinearLayout > |
This is the java code for listening to the state change
package com.coderzheaven.pack; import android.app.Activity; import android.os.Bundle; import android.widget.CheckBox; import android.widget.CompoundButton; import android.widget.Toast; import android.widget.CompoundButton.OnCheckedChangeListener; public class CheckBoxDemo extends Activity { CheckBox ch; @Override public void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView(R.layout.main); ch = (CheckBox)findViewById(R.id.CheckBox01); ch.setOnCheckedChangeListener( new OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { if (isChecked){ Toast.makeText(getApplicationContext(), "Checked" , Toast.LENGTH_SHORT).show(); } else { Toast.makeText(getApplicationContext(), "Not Checked" , Toast.LENGTH_SHORT).show(); } } }); } } |
Download the sample code here
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