Example of the Android Radiogroup and RadioButton controls simple usage _android

The examples in this article describe the simple use of the Android Radiogroup and RadioButton controls. Share to everyone for your reference, specific as follows:

Radiogroup and RadioButton represent a control of the radio button in Android, and write a simple code that is familiar:

Import android.app.Activity;
Import Android.os.Bundle;
Import Android.widget.RadioButton;
Import Android.widget.RadioGroup;
Import Android.widget.RadioGroup.OnCheckedChangeListener;
Import Android.widget.TextView;
  public class Radio extends activity {private TextView Mytextview;
  Private RadioButton chinabtn;
  Private RadioButton ukbtn;
  Private RadioButton usabtn;
  Private Radiogroup RG; /** called the activity is a.
    * * @Override public void onCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);
    Setcontentview (R.layout.main);
    Find TextView Mytextview = (TextView) Findviewbyid (r.id.mytextview) by ID;
    Find RadioButton chinabtn = (RadioButton) Findviewbyid (R.id.china_button) by ID;
    UKBTN = (RadioButton) Findviewbyid (R.id.uk_button);
    USABTN = (RadioButton) Findviewbyid (R.id.usa_button);
    Find Radiogroup RG = (radiogroup) Findviewbyid (r.id.rbtngroup) by ID; Just listen to the Radiogroup rg.setoncheckedchangelisteNER (new Oncheckedchangelistener () {@Override public void oncheckedchanged (radiogroup group, int checkedid) { TODO auto-generated Method Stub if (R.id.china_button = = Checkedid) {mytextview.settext ("your Chosen country
        Home is: "+ chinabtn.gettext (). toString ());
        else if (R.id.uk_button = = Checkedid) {Mytextview.settext ("The country you selected is:" + ukbtn.gettext (). toString ()); else if (R.id.usa_button = = Checkedid) {Mytextview.settext ("The country you selected is:" + usabtn.gettext (). toString
        ());
  }
      }
    });

 }
}

The

Main.xml file is as follows:

<?xml version= "1.0" encoding= "Utf-8"?> <linearlayout xmlns:android= "http://schemas.android.com/apk/res/" Android "android:orientation=" vertical "android:layout_width=" fill_parent "android:layout_height=" "Fill_parent"
  ; <textview android:id= "@+id/mytextview" android:layout_width= wrap_content "android:layout_height=" Wrap_cont Ent "android:text=" @string/hello "/> <radiogroup android:id=" @+id/rbtngroup "Android:layout_width=" W Rap_content "android:layout_height=" wrap_content "> <radiobutton android:id=" @+id/china_bu Tton "android:layout_width=" wrap_content "android:layout_height=" wrap_content "android:text=" "China"/&G
    T <radiobutton android:id= "@+id/uk_button" android:layout_width= "Wrap_content" W Rap_content "android:text=", "British"/> <radiobutton android:id= "@+id/usa_button" android:layout
_width= "Wrap_content"      android:layout_height= "Wrap_content" android:text= "USA"/> </RadioGroup> </LinearLayout>

The effect is as follows:

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I hope this article will help you with the Android program.