Develop tool: IntelliJ IDEA
Coding below:
src/com.hhy.OnCheckedChangeListener/MyActivity:
package com.hhy.OnCheckedChangeListener;
import android.app.Activity;
import android.os.Bundle;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.TextView;
import org.w3c.dom.Text;
public class MyActivity extends Activity {
private CheckBox eat, drink, play, fun, all;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
eat = (CheckBox)findViewById(R.id.eat);
drink = (CheckBox)findViewById(R.id.drink);
play = (CheckBox)findViewById(R.id.play);
fun = (CheckBox)findViewById(R.id.fun);
all = (CheckBox)findViewById(R.id.all);
AllCheckedListener listener = new AllCheckedListener();
all.setOnCheckedChangeListener(listener);
}
class AllCheckedListener implements CompoundButton.OnCheckedChangeListener{
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
eat.setChecked(isChecked);
drink.setChecked(isChecked);
play.setChecked(isChecked);
fun.setChecked(isChecked);
}
}
}
res/layout/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:id="@+id/eat"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Eat"
/>
<CheckBox
android:id="@+id/drink"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Drink"
/>
<CheckBox
android:id="@+id/play"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Play"
/>
<CheckBox
android:id="@+id/fun"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Fun"
/>
<CheckBox
android:id="@+id/all"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Select All"/>
</LinearLayout>