CheckBox Example

activity_main.xml:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".MainActivity" >

    <CheckBox

        android:id="@+id/checkBox1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentLeft="true"

        android:layout_alignParentTop="true"

        android:layout_marginLeft="87dp"

        android:layout_marginTop="54dp"

        android:text="CheckBox" />

    <Button

        android:id="@+id/button1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_centerHorizontal="true"

        android:layout_centerVertical="true"

        android:text="Show" />

</RelativeLayout>

public class MainActivity extends Activity {
CheckBox check;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
       
        check = (CheckBox)findViewById(R.id.checkBox1);
       
       check.setOnCheckedChangeListener(new OnCheckedChangeListener() {

@Override
public void onCheckedChanged(CompoundButton arg0, boolean arg1) {
// TODO Auto-generated method stub
if(arg0.isChecked()){
check.setText("Checked");
}else{
check.setText("UnChecked");
}
}
});

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public class MainActivity extends Activity {
CheckBox check;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
       
        check = (CheckBox)findViewById(R.id.checkBox1);
       
       Button showButton = (Button)findViewById(R.id.button1);

       
       showButton.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
if(check.isChecked()){
Toast.makeText(getApplicationContext(), "Checked", Toast.LENGTH_LONG).show();
}else{
Toast.makeText(getApplicationContext(), "UnChecked", Toast.LENGTH_LONG).show();
}
}
});
    }

      
}