Monday, May 20, 2013

Apply animations on layout changes using LayoutTransition

LayoutTransition (Added in API level 11) enables automatic animations on layout changes in ViewGroup objects.


LayoutTransition transition = new LayoutTransition();

It's the default animations effect apply on the dynamic view in last exercise "Add and Remove view dynamically".

Modify from last exercise.
- Apply LayoutTransition on container of LinearLayout.
- To made the effect noticeable, insert dynamic view in front by calling container.addView(addView, 0) instead of container.addView(addView).
- Modify AndroidManifest.xml to have minSdkVersion="11".

package com.example.androiddynamicview;

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.animation.LayoutTransition;
import android.content.Context;

public class MainActivity extends Activity {
 EditText textIn;
 Button buttonAdd;
 LinearLayout container;

 protected void onCreate(Bundle savedInstanceState) {
  textIn = (EditText)findViewById(;
  buttonAdd = (Button)findViewById(;
  container = (LinearLayout)findViewById(;
  buttonAdd.setOnClickListener(new OnClickListener(){

   public void onClick(View arg0) {
    LayoutInflater layoutInflater = 
      (LayoutInflater) getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    final View addView = layoutInflater.inflate(R.layout.row, null);
    TextView textOut = (TextView)addView.findViewById(;
    Button buttonRemove = (Button)addView.findViewById(;
    buttonRemove.setOnClickListener(new OnClickListener(){

     public void onClick(View v) {
    container.addView(addView, 0);
  LayoutTransition transition = new LayoutTransition();


download filesDownload the files.

To apply Android 3.0 animation API on old devices, NineOldAndroids is an alternative.


herrbert74 said...

You should note that you can use this class on pre-Honeycomb devices (almost 50% of the devices on Google Play!) with NineOldAndroids.

Andr.oid Eric said...

thx herrbert74

herrbert74 said...

Oh, sorry about this. I should check it before I post.
NineOldAndroids doesn't have LayoutTransition, beause it was not possible to implement. It is stated on the main page of the website. Sorry.

Andr.oid Eric said...

OK. I added remark on the post.

Many people want to implement HoneyComb animation, actionbar... for old device. It's a alternative choice. May be I will also try it later.

Francis Gregorio said...

I'm having a sort of problem here. In my layout, I have other views after the LinearLayout. It turns out that whenever I remove a childview, that childview is immediately removed from the hierarchy (the views after the LinearLayout adjust themselves), then the shrinking animation occurs. I think this works exactly like the reverse of adding a child. Now, is there a way for the animation to occur first before the other views readjust?

Andr.oid Eric said...

hello Francis Gregorio,

I think you can implement TransitionListener to adjust the views after animation ended.

Anonymous said...

Where is Source code please provide the another link.

Abhishek said...

edittext loading from bottom to top is it possible ??