start Upsidedown Animation - Android android.view.animation

Android examples for android.view.animation:Rotate Animation

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Description

start Upsidedown Animation

Demo Code

import android.view.View;
import android.view.animation.Animation;
import android.view.animation.LinearInterpolator;
import android.view.animation.RotateAnimation;

public class Main{

    public static void startUpsidedownAnimation(View view,
            boolean clockwise, long durationMillis) {
        startAnimation(view,//  w  ww .j a  v a2 s  . c om
                getUpsidedownAnimation(clockwise, durationMillis));
    }
    public static RotateAnimation getUpsidedownAnimation(boolean clockwise,
            long durationMillis) {
        float fromDegrees, toDegrees;
        if (clockwise) {
            fromDegrees = -180;
            toDegrees = 0;
        } else {
            fromDegrees = 0;
            toDegrees = -180;
        }
        RotateAnimation anim = new RotateAnimation(fromDegrees, toDegrees,
                RotateAnimation.RELATIVE_TO_SELF, 0.5f,
                RotateAnimation.RELATIVE_TO_SELF, 0.5f);
        anim.setInterpolator(new LinearInterpolator());
        anim.setDuration(durationMillis);
        anim.setFillAfter(true);
        return anim;
    }
    public static void startAnimation(View view, Animation anim) {
        view.clearAnimation();
        view.startAnimation(anim);
        //view.invalidate();
    }

}

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