Basic Android Training: Using RadioButton and RadioGroup Example

Create android project MyFeelingApp.

Then copy the following files:

<?xml version="1.0" encoding="utf-8"?> <resources>     <string name="app_name">My Feeling App</string>     <string name="hello">Hello World, MyFeelingAppActivity!</string>     <string name="instruction">How are you?</string>     <string name="radioStressLbl">Stress</string>     <string name="radioHappyLbl">Happy</string> </resources>

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="fill_parent"     android:layout_height="fill_parent"     android:orientation="vertical" >     <TextView         android:layout_width="fill_parent"         android:layout_height="wrap_content"         android:text="@string/instruction" />        <RadioGroup         android:id="@+id/radioFeelings"         android:layout_width="wrap_content"         android:layout_height="wrap_content" >                       <RadioButton                   android:id="@+id/radioStress"                   android:layout_width="wrap_content"                   android:layout_height="wrap_content"                   android:text="@string/radioStressLbl" />                      <RadioButton                   android:id="@+id/radioHappy"                   android:layout_width="wrap_content"                   android:layout_height="wrap_content"                   android:text="@string/radioHappyLbl" />                    </RadioGroup>    </LinearLayout>

package com.kent; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.RadioButton; import android.widget.RadioGroup; import android.widget.Toast; public class MyFeelingAppActivity extends Activity        implements RadioButton.OnClickListener{               private RadioGroup radioFeelings;            @Override     public void onCreate(Bundle savedInstanceState) {                super.onCreate(savedInstanceState);         setContentView(R.layout.main);                ((RadioButton)findViewById(R.id.radioStress)).setOnClickListener(this);         ((RadioButton)findViewById(R.id.radioHappy)).setOnClickListener(this);     }        public void onClick(View v) {                                           radioFeelings = (RadioGroup) findViewById(R.id.radioFeelings);                             // Get selected option ID from RadioGroup               int iSelectedID = radioFeelings.getCheckedRadioButtonId();               // Return the RadioButton object with selected ID               RadioButton radioFeeling = (RadioButton) findViewById(iSelectedID);               Toast.makeText(MyFeelingAppActivity.this,                            radioFeeling.getText().toString(), Toast.LENGTH_SHORT).show();                            } }