Android: how to warp images?

Question

I want to warp images like this:

Added 08-04-2013: I used this code but it\'

Answer 1

This could be achieved by OpenCV so give a try to this

Answer 2

There is a much easier way than coding you own. See TransitionDrawable

An extension of LayerDrawables that is intended to cross-fade between the first and second layer. To start the transition, call startTransition(int). To display just the first layer, call resetTransition().
It can be defined in an XML file with the <transition> element. Each Drawable in the transition is defined in a nested <item>

You can find many examples on line, here is one:

<?xml version="1.0" encoding="utf-8"?>
<transition xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:drawable="@drawable/first_image" />
  <item android:drawable="@drawable/second_image" />
</transition>

and the code

final ImageView image = (ImageView) findViewById(R.id.image);
final ToggleButton button = (ToggleButton) findViewById(R.id.button);
button.setOnClickListener(new OnClickListener() {
  @Override
  public void onClick(final View v) {
    TransitionDrawable drawable = (TransitionDrawable) image.getDrawable();
    if (button.isChecked()) {
      drawable.startTransition(500);
    } else {
      drawable.reverseTransition(500);
    }
  }
});