This class extends the Animation class and provide extra APIs to perform a horizontal and vertical view flip. It uses the Camera class for transformations to provide a smooth 3D feel.
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Download: JAR library
When using this library, simply add the JAR to your project:
Right click on project --> Properties --> Java Build Path --> Libraries --> Add External JARs
// Flag to keep track of which view is on top
boolean mIsTopView = true;
// Setting the top and bottom view for flip animation
final FlipAnimation flipAnimation = new FlipAnimation(topView, bottomView);
// Setting a horizontal flip; the other option is a vertical flip
flipAnimation.setOrientation(FlipAnimation.HORIZONTAL);
// Listening to button clicks to perform the flip
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
final boolean flipSuccessful;
if (mIsTopView) {
flipSuccessful = flipAnimation.flip(mIsTopView);
} else {
flipSuccessful = flipAnimation.flip(mIsTopView);
}
// If flip was not successful, that means the animation wasn't
// done
if (flipSuccessful) {
mIsTopView = !mIsTopView;
}
}
});