Android CheckBox Example
In this tutorial we show you how to create checkbox in android with code sample. This example creates three checkbox and handles users input.
December 22, 2013 · 5 min read
In this tutorial, we show you how to use check box in android with example.
Checkbox is a two-states button that can be either checked or unchecked. When the radio button is unchecked, the user can click it to check it or vice-versa. Unlike RadioButton, android check box works like toggle between two states.
Android CheckBox Example
Let us create a example that displays three checkbox and responds to user click event. When user selects or un-select the button, it displays a toast with its state. Create a new layout file named activity_main.xml under layout resource folder and add the following code snippets. The code will generate the layout as shown in the screenshot below.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="@dimen/activity_vertical_margin">
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hint"
android:textAppearance="?android:attr/textAppearanceLarge" />
<CheckBox
android:id="@+id/music"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/music" />
<CheckBox
android:id="@+id/game"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="true"
android:text="@string/game" />
<CheckBox
android:id="@+id/blogging"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/blogging" />
</LinearLayout>
In the above layout class, we are using below strings
<resources>
<string name="app_name">My Application</string>
<string name="blogging">Write Blog</string>
<string name="music">Listen Music</string>
<string name="game">Play Games</string>
<string name="submit">Submit</string>
<string name="hint">What do you like do in your free time?</string>
</string>
</resources>Using CheckBox from Activity
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.CheckBox;
import android.widget.Toast;
public class MainActivity extends Activity {
private CheckBox blogging, game, music;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
blogging = (CheckBox) findViewById(R.id.blogging);
game = (CheckBox) findViewById(R.id.game);
music = (CheckBox) findViewById(R.id.music);
music.setOnClickListener(checkboxClickListener);
game.setOnClickListener(checkboxClickListener);
blogging.setOnClickListener(checkboxClickListener);
/* Set blogging by default */
blogging.setChecked(true);
}
View.OnClickListener checkboxClickListener = new View.OnClickListener() {
@Override
public void onClick(View view) {
boolean checked = ((CheckBox) view).isChecked();
if (checked) {
String text = null;
switch (view.getId()){
case R.id.game:
text = "Play Game";
break;
case R.id.music:
text = "Listen Music";
break;
case R.id.blogging:
text="Write blog";
break;
}
Toast.makeText(MainActivity.this, text, Toast.LENGTH_LONG).show();
}
}
};
}