Image transition animation in Android

By | December 29, 2011

Hello all…

I have shown a lot of examples of animations in android.
Today I will show you how to show an image transition animation between two images. For that you have to create an xml named “expand_collapse.xml” inside the res/drawable folder.

The contents of “expand_collapse.xml” are

<transition xmlns:android="http://schemas.android.com/apk/res/android">
      <item android:drawable="@drawable/android_1" />
      <item android:drawable="@drawable/android_2" />
</transition>

Now in the main.xml place an imageView to show the transition

<?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"
    >
<ImageView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:id="@+id/toggle_image"
    />
</LinearLayout>

Now in the main java file I will show you how to apply this transition.

package com.coderzheaven.pack;

import android.app.Activity;
import android.content.res.Resources;
import android.graphics.drawable.TransitionDrawable;
import android.os.Bundle;
import android.widget.ImageView;

public class TransitionDrawableDemo extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        Resources res = getApplicationContext().getResources();
        TransitionDrawable transition = (TransitionDrawable) res.getDrawable(R.drawable.expand_collapse);
        ImageView image = (ImageView) findViewById(R.id.toggle_image);
        image.setImageDrawable(transition);

        transition.startTransition(5000);
   }
}
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