The use of radio button (Radiogroup) in Android program development _android

has not introduced to everybody to introduce the radio button (Radiogroup) the use, first shows the effect chart for everybody:

XML file

<linearlayout
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 " 
android:orientation=" vertical > 
<textview 
android:id= "@+id/txt" 
android: Layout_width= "Fill_parent" 
android:layout_height= "wrap_content" 
android:text= "your sex for"/> 
< Radiogroup 
android:id= "@+id/sex" 
android:layout_width= fill_parent "android:layout_height=" Wrap 
_content "> 
<radiobutton 
android:id=" @+id/male "android:text= 
" male " 
/> <radiobutton 
android:id= "@+id/female" 
android:text= "female"/> 
</RadioGroup> 

Java files

 public class Mainactivity extends activity {private TextView txt=null; 
Private Radiogroup Sex=null; 
Private RadioButton Male=null; 
Private RadioButton Female=null; 
@Override protected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); 
Setcontentview (R.layout.activity_main); 
this.txt= (TextView) Super.findviewbyid (r.id.txt); 
this.sex= (Radiogroup) Super.findviewbyid (r.id.sex); 
This.male= (RadioButton) Super.findviewbyid (R.id.male); 
This.female= (RadioButton) Super.findviewbyid (R.id.female); 
This.sex.setOnCheckedChangeListener (New Oncheckedchangelistenerimp ()); Private class Oncheckedchangelistenerimp implements oncheckedchangelistener{public void oncheckedchanged (Radiogroup 
Group, int checkedid) {String temp=null; 
if (MainActivity.this.male.getId () ==checkedid) {temp= "male"; 
else if (MainActivity.this.female.getId () ==checkedid) {temp= "female"; 
} MainActivity.this.txt.setText ("Your gender is" +temp); } }

The above is a small set to introduce the Android program development in the radio button (Radiogroup) The use of detailed, I hope to help you!