slide up /down translate

Many would be interested to perform some kindaa of slide up or bottom up animation of images on a button click.

Translate animation can be used to perform this.
public TranslateAnimation (float fromXDelta, float toXDelta, float fromYDelta, float toYDelta)

FromX - 0
ToX - 0
FromY - 100
ToY - 0

// This means from the height of 100px, the animation will move up the view upwards untill toY becomes 0. THis looks like the view is moved from bottom up or slide up

What i tried out here

1 - A Linearlayout of height 100px is created and set a edit text inside it.
Intially edit text is set to invisible state.So that first time, application
started you will see nothing.
2 - On the onlick() of Button object
- created a translate animation with fromY = 100
- Set the fillafter(true) so that when animation ends, the position of view will be retained. else the view will not be visible.

3 - start the animation on the edit text object.

   public void onClick(View v) {
    edit.setVisibility(View.VISIBLE);
    TranslateAnimation slide = new TranslateAnimation(0, 0, 100,0 ); 
    slide.setDuration(1000); 
    slide.setFillAfter(true); 
    edit.startAnimation(slide);
   }
  });

edittext.java
----------------

package com.android.edittext;

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

public class edittext extends Activity {
 Button b;
 EditText edit;
 View layout;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        edit = (EditText)findViewById(R.id.edittext);
        b = (Button)findViewById(R.id.button);
        layout = (View) findViewById(R.id.layout);
        b.setOnClickListener(new View.OnClickListener() {
   
   @Override
   public void onClick(View v) {
    edit.setVisibility(View.VISIBLE);
    TranslateAnimation slide = new TranslateAnimation(0, 0, 100,0 ); 
    slide.setDuration(1000); 
    slide.setFillAfter(true); 
    edit.startAnimation(slide);
   }
  });
    }
}

layout.xml
------------

<?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:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello"
    />
    <Button
    android:id="@+id/button"
    
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="slideup"
    />
    
<LinearLayout
 android:id="@+id/layout"
 android:orientation="vertical"
  android:layout_width="fill_parent" 
  android:layout_height="100px" 
 >
    
<EditText
android:id="@+id/edittext"
android:visibility="gone"  
android:layout_width="fill_parent" 
android:layout_height="wrap_content" 
android:scrollHorizontally="true"
/>   
  
</LinearLayout>

</LinearLayout>