Android – CheckBox Example – OnCheckedChangeListener
-
Paresh Mayani
- August 12, 2011
- 1 min read
- No Comments
Here I am going to give you a simple demo of CheckBox and its OnCheckedChangeListener. In this tutorial, we will see the toast notification whenever a particular CheckBox is checked.
main.xml
<?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">
<CheckBox
android:text="Android"
android:id="@+id/chkBoxAndroid"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</CheckBox>
<CheckBox
android:text="iPhone"
android:id="@+id/chkBoxIPhone"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</CheckBox>
<CheckBox
android:text="BlackBerry"
android:id="@+id/chkBoxBlackBerry"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</CheckBox>
</LinearLayout>
CheckBoxCheckedDemo.java
package com.technotalkative.checkboxdemo;
import android.app.Activity;
import android.os.Bundle;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.Toast;
public class CheckBoxCheckedDemo extends Activity
{
CheckBox chkBoxAndroid;
CheckBox chkBoxIPhone;
CheckBox chkBoxBlackBerry;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
initialUISetup();
}
public void initialUISetup() {
chkBoxAndroid = (CheckBox) findViewById(R.id.chkBoxAndroid);
chkBoxIPhone = (CheckBox) findViewById(R.id.chkBoxIPhone);
chkBoxBlackBerry = (CheckBox) findViewById(R.id.chkBoxBlackBerry);
chkBoxAndroid.setOnCheckedChangeListener(new myCheckBoxChnageClicker());
chkBoxIPhone.setOnCheckedChangeListener(new myCheckBoxChnageClicker());
chkBoxBlackBerry.setOnCheckedChangeListener(new myCheckBoxChnageClicker());
}
class myCheckBoxChnageClicker implements CheckBox.OnCheckedChangeListener
{
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
// TODO Auto-generated method stub
// Toast.makeText(CheckBoxCheckedDemo.this, "Checked => "+isChecked, Toast.LENGTH_SHORT).show();
if(isChecked) {
if(buttonView==chkBoxAndroid) {
showTextNotification("Android");
}
if(buttonView==chkBoxIPhone) {
showTextNotification("iPhone");
}
if(buttonView==chkBoxBlackBerry) {
showTextNotification("BlackBerry");
}
}
}
}
public void showTextNotification(String msgToDisplay) {
Toast.makeText(this, msgToDisplay, Toast.LENGTH_SHORT).show();
}
}
