Working with TextView

Screen Shots:

1.main.xml:

<?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:background="#EEA9B8"

    android:orientation="vertical" >

    <TextView

        android:id="@+id/textview"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:layout_marginTop="120dp"

        android:gravity="center"

        android:text="TextView"

        android:textColor="#ffffff"

        android:textSize="25dp"

        android:textStyle="bold" />

    <Button

        android:id="@+id/button"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:textSize="18dp"

        android:layout_gravity="center"

        android:layout_marginTop="50dp"

        android:text="Change Text" />

</LinearLayout>

2.Activity:

package com.venky.textview;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.TextView;

public class TextViewActivity extends Activity {

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

    TextView textview;

    Button button;

    @Override

    public void onCreate(Bundle savedInstanceState) {

         super.onCreate(savedInstanceState);

         setContentView(R.layout.main);

         textview = (TextView) findViewById(R.id.textview);

         button = (Button) findViewById(R.id.button);

         button.setOnClickListener(new OnClickListener() {

             public void onClick(View v) {

                  // TODO Auto-generated method stub

                  textview.setText("Text Changed");

             }

         });

    }

}

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