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Android

Constantine Antonakos
Constantine Antonakos
9,741 Points
Posted by Constantine Antonakos
Constantine Antonakos
9,741 Points

Android Animations

Can anyone point me to good Android tutorials for animations, such as tween animations as show in Google's DevBytes series with Chet Haas?

Or could we perhaps get an awesome Treehouse-style Android animation tutorial (any, but perhaps ListView?) from our very awesome Ben Jakuben? :)

I'm trying to create ListView animations for my Android app.

2 Answers

Ben Jakuben
STAFF
Ben Jakuben
Treehouse Teacher
Ben Jakuben
Ben Jakuben
Treehouse Teacher

This is a good idea, I'll keep this in mind for my next workshop or tip video. In the meantime, here is some sample animation code that might help you get started. You can find more information about each type of animation in the Android documentation.

MainActivity.java

public class MainActivity extends Activity {

    protected ImageView mRotatingImage;
    protected ImageView mSlidingImage;
    protected ImageView mScaleImage;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // Rotate an image
        mRotatingImage = (ImageView) findViewById(R.id.rotatingImage);
        Animation rotation = AnimationUtils.loadAnimation(this, R.anim.rotate);
        rotation.setRepeatCount(Animation.INFINITE);
        mRotatingImage.startAnimation(rotation);

        // Slide an image back and forth horizontally
        mSlidingImage = (ImageView) findViewById(R.id.slidingImage);
        Animation translation = new TranslateAnimation(0, 320,0, 0);
        translation.setDuration(1000);
        translation.setRepeatCount(Animation.INFINITE);
        translation.setRepeatMode(Animation.REVERSE);
        mSlidingImage.startAnimation(translation);

        // Zoom in and out of an image
        mScaleImage = (ImageView) findViewById(R.id.scaleImage);
        Animation resize = new ScaleAnimation(1, 2, 1, 2, 200, 50);
        resize.setDuration(2000);
        resize.setRepeatCount(Animation.INFINITE);
        resize.setRepeatMode(Animation.REVERSE);
        mScaleImage.startAnimation(resize);
    }
}

rotate.xml (in res/anim)

<?xml version="1.0" encoding="UTF-8"?>
<rotate
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/linear_interpolator"
    android:fromDegrees="0"
    android:toDegrees="360"
    android:pivotX="50%"
    android:pivotY="50%"
    android:repeatCount="2"
    android:duration="1500" />
Constantine Antonakos
Constantine Antonakos
9,741 Points
Constantine Antonakos
Constantine Antonakos
9,741 Points

Thank you! I'm excited to see your future Android videos. :)

Constantine Antonakos
Constantine Antonakos
9,741 Points
Constantine Antonakos
Constantine Antonakos
9,741 Points

Thank you so much!! I'm incredibly grateful for your thoughtful response! :)