In this tutorial basic concepts of CheckBox control of Android is shown.<\/p>\n
Code:<\/p>\n
activity_main.xml<\/p>\n
<RelativeLayout xmlns:android=”http:\/\/schemas.android.com\/apk\/res\/android”
\nxmlns:tools=”http:\/\/schemas.android.com\/tools”
\nandroid:layout_width=”match_parent”
\nandroid:layout_height=”match_parent”
\nandroid:paddingBottom=”@dimen\/activity_vertical_margin”
\nandroid:paddingLeft=”@dimen\/activity_horizontal_margin”
\nandroid:paddingRight=”@dimen\/activity_horizontal_margin”
\nandroid:paddingTop=”@dimen\/activity_vertical_margin”
\ntools:context=”.MainActivity” ><\/p>\n
<TextView
\nandroid:id=”@+id\/textView1″
\nandroid:layout_width=”wrap_content”
\nandroid:layout_height=”wrap_content”
\nandroid:layout_alignParentLeft=”true”
\nandroid:layout_alignParentTop=”true”
\nandroid:layout_marginLeft=”46dp”
\nandroid:layout_marginTop=”55dp”
\nandroid:text=”Hobbies” \/><\/p>\n
<CheckBox
\nandroid:id=”@+id\/c1″
\nandroid:layout_width=”wrap_content”
\nandroid:layout_height=”wrap_content”
\nandroid:layout_alignBaseline=”@+id\/textView1″
\nandroid:layout_alignBottom=”@+id\/textView1″
\nandroid:layout_marginLeft=”40dp”
\nandroid:layout_toRightOf=”@+id\/textView1″
\nandroid:onClick=”onCheck”
\nandroid:text=”Reading” \/><\/p>\n
<CheckBox
\nandroid:id=”@+id\/c2″
\nandroid:layout_width=”wrap_content”
\nandroid:layout_height=”wrap_content”
\nandroid:layout_alignLeft=”@+id\/c1″
\nandroid:layout_below=”@+id\/c1″
\nandroid:layout_marginTop=”18dp”
\nandroid:onClick=”onCheck”
\nandroid:text=”Collecting coins” \/><\/p>\n
<CheckBox
\nandroid:id=”@+id\/c3″
\nandroid:layout_width=”wrap_content”
\nandroid:layout_height=”wrap_content”
\nandroid:layout_alignLeft=”@+id\/c2″
\nandroid:layout_below=”@+id\/c2″
\nandroid:layout_marginTop=”18dp”
\nandroid:onClick=”onCheck”
\nandroid:text=”Sports” \/><\/p>\n
<CheckBox
\nandroid:id=”@+id\/c4″
\nandroid:layout_width=”wrap_content”
\nandroid:layout_height=”wrap_content”
\nandroid:layout_alignLeft=”@+id\/c3″
\nandroid:layout_centerVertical=”true”
\nandroid:onClick=”onCheck”
\nandroid:text=”Others” \/><\/p>\n
<Button
\nandroid:id=”@+id\/b1″
\nandroid:layout_width=”wrap_content”
\nandroid:layout_height=”wrap_content”
\nandroid:layout_below=”@+id\/c4″
\nandroid:layout_marginTop=”44dp”
\nandroid:layout_toRightOf=”@+id\/textView1″
\nandroid:onClick=”onSubmit”
\nandroid:text=”Submit” \/><\/p>\n
<TextView
\nandroid:id=”@+id\/t2″
\nandroid:layout_width=”wrap_content”
\nandroid:layout_height=”wrap_content”
\nandroid:layout_alignParentBottom=”true”
\nandroid:layout_centerHorizontal=”true”
\nandroid:layout_marginBottom=”41dp” \/><\/p>\n
<\/RelativeLayout><\/p>\n
MainActivity.java<\/p>\n
package com.example.demo;<\/p>\n
import android.os.Bundle;
\nimport android.app.Activity;
\nimport android.view.Menu;
\nimport android.view.View;
\nimport android.widget.CheckBox;
\nimport android.widget.TextView;<\/p>\n
public class MainActivity extends Activity{<\/p>\n
TextView t2;
\nString mes=””;<\/p>\n
@Override
\nprotected void onCreate(Bundle savedInstanceState) {
\nsuper.onCreate(savedInstanceState);
\nsetContentView(R.layout.activity_main);
\nt2=(TextView)findViewById(R.id.t2);
\n}<\/p>\n
public void onCheck(View v)
\n{
\nBoolean ch=((CheckBox)v).isChecked();<\/p>\n
switch(v.getId())
\n{
\ncase R.id.c1:
\nif(ch)
\nmes=mes+”Reading “;
\nbreak;
\ncase R.id.c2:
\nif(ch)
\nmes=mes+”Collecting Coins “;
\nbreak;
\ncase R.id.c3:
\nif(ch)
\nmes=mes+”Sports “;
\nbreak;
\ncase R.id.c4:
\nif(ch)
\nmes=mes+”Others “;
\nbreak;
\n}
\n}<\/p>\n
public void onSubmit(View v)
\n{
\nt2.setText(mes);
\n}<\/p>\n
@Override
\npublic boolean onCreateOptionsMenu(Menu menu) {
\n\/\/ Inflate the menu; this adds items to the action bar if it is present.
\ngetMenuInflater().inflate(R.menu.main, menu);
\nreturn true;
\n}<\/p>\n
}<\/p>\n