Reset All Values using Reset Button in Android

Main.Xml
<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="User Name" />
    <EditText android:layout_width="fill_parent"
              android:layout_height="wrap_content"
              android:id="@+id/username"/>
    <Button  android:layout_width="fill_parent"
              android:layout_height="wrap_content"
              android:id="@+id/reset"
              android:text="Reset Button"/>

</LinearLayout>


Activity(ResetExampleActivity )
package com.surya.resetvalues;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;

public class ResetExampleActivity extends Activity {
     EditText uname;
   
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        uname =(EditText)findViewById(R.id.username);
        Button reset=(Button)findViewById(R.id.reset);
        reset.setOnClickListener(new OnClickListener() {
           
            @Override
            public void onClick(View v) {
       
                uname.setText(" ");
            }  
    });
   
}
    }