simple android program using button and onclickListener

simple android program using button and onclickListener

RelativelayoutActivity.java

package a.b;

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;

import android.widget.TextView;

public class RelativelayoutActivity extends Activity implements OnClickListener {

Button b1;

EditText e;

TextView t1;

String s1;

    /** Called when the activity is first created. */

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        e=(EditText)findViewById(R.id.ediUserName);

        b1=(Button)findViewById(R.id.btnGo);

        t1=(TextView)findViewById(R.id.lblUserName);

        b1.setOnClickListener(this);

        

    }

public void onClick(View v) {

// TODO Auto-generated method stub

s1=e.getText().toString();

if(v==b1)

{

t1.setText(s1);

}

}

}

main.xml

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout

android:id="@+id/myRelativeLayout"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:background="#ff000000"

xmlns:android="http://schemas.android.com/apk/res/android">

<TextView

android:id="@+id/lblUserName"

android:layout_width="fill_parent"

android:layout_height="100dp"

android:background="#ff000066"

android:text="User Name"

android:textStyle="bold"

android:textColor="#ff00ff00"

android:layout_alignParentTop="true"

android:layout_alignParentLeft="true">

</TextView>

<EditText

android:id="@+id/ediUserName"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_below="@+id/lblUserName"

android:layout_alignParentLeft="true"

android:layout_alignLeft="@+id/myRelativeLayout"

 android:padding="20dip">

 </EditText>

 <Button 

 android:id="@+id/btnGo"

 android:layout_width="wrap_content" 

 android:layout_height="wrap_content"

  android:layout_below="@+id/ediUserName" 

  android:layout_alignRight="@+id/ediUserName" 

  android:text="Go" 

  android:textStyle="bold">

  </Button>

  <Button

   android:id="@+id/btnCancel" 

   android:layout_width="wrap_content" 

   android:layout_height="wrap_content"

 android:layout_toLeftOf="@+id/btnGo" 

 android:layout_below="@+id/ediUserName" 

 android:text="Cancel" 

 android:textStyle="bold">

 </Button>

 </RelativeLayout>