The checkbox is a specific two-states button that can either be checked or unchecked. It is a widget and a subclass of CompoundButton class.
Available constructors for this class are the following:
public CheckBox (Context context)
public CheckBox (Context context, AttributeSet attrs)
public CheckBox (Context context, AttributeSet attrs, int defStyle)
Public methos are the following:
void onInitializeAccessibilityEvent(AccessibilityEvent event)
Initializes an AccessibilityEvent with information about this View which is the event source.void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info)
Initializes an AccessibilityNodeInfo with information about this view.
Below is a simple sample program for the checkbox.
Step 1:
Create an Android project named HelloCheckBox. The project structure will look like this:
Step 2:
Edit or create the layout view so that it will display the CheckBox widget.
Step 3:
Modify the Java source code so that it will handle the event when the checkbox object is clicked. We add the click listener so that it will display a message when the checkbox is clicked.
Below are the imported classes:
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.CheckBox;
import android.widget.Toast;
Step 4:
Run the program. Try checking or unchecking on the checkbox object and see the message that will be displayed.
