安卓(Android) 怎么使用PropertyValueSholder创建动画(Animation)

2019年10月16日22:43:45安卓(Android) 怎么使用PropertyValueSholder创建动画(Animation)已关闭评论 258 1666字阅读5分33秒

1.简介

安卓(Android) 怎么使用PropertyValueSholder创建动画(Animation)?——请看下文。

2.示例代码

/**
 * 版权所有 编程十万个怎么办(www.tah1986.com)
 */


import android.animation.Keyframe;
import android.animation.ObjectAnimator;
import android.animation.PropertyValuesHolder;
import android.view.View;

public class Main {
    public static ObjectAnimator tada(View view) {
        return tada(view, 4f);
    }

    public static ObjectAnimator doAnimate(View view, float shakeFactor) {

        PropertyValuesHolder pvhScaleX = PropertyValuesHolder.ofKeyframe(
                "scaleX", Keyframe.ofFloat(0f, 1f),
                Keyframe.ofFloat(.1f, .9f), Keyframe.ofFloat(.2f, .9f),
                Keyframe.ofFloat(.3f, 1.1f), Keyframe.ofFloat(.4f, 1.1f),
                Keyframe.ofFloat(.5f, 1.1f), Keyframe.ofFloat(.6f, 1.1f),
                Keyframe.ofFloat(.7f, 1.1f), Keyframe.ofFloat(.8f, 1.1f),
                Keyframe.ofFloat(.9f, 1.1f), Keyframe.ofFloat(1f, 1f));

        PropertyValuesHolder pvhScaleY = PropertyValuesHolder.ofKeyframe(
                "scaleY", Keyframe.ofFloat(0f, 1f),
                Keyframe.ofFloat(.1f, .9f), Keyframe.ofFloat(.2f, .9f),
                Keyframe.ofFloat(.3f, 1.1f), Keyframe.ofFloat(.4f, 1.1f),
                Keyframe.ofFloat(.5f, 1.1f), Keyframe.ofFloat(.6f, 1.1f),
                Keyframe.ofFloat(.7f, 1.1f), Keyframe.ofFloat(.8f, 1.1f),
                Keyframe.ofFloat(.9f, 1.1f), Keyframe.ofFloat(1f, 1f));

        PropertyValuesHolder pvhRotate = PropertyValuesHolder.ofKeyframe(
                "rotation", Keyframe.ofFloat(0f, 0f),
                Keyframe.ofFloat(.1f, -3f * shakeFactor),
                Keyframe.ofFloat(.2f, -3f * shakeFactor),
                Keyframe.ofFloat(.3f, 3f * shakeFactor),
                Keyframe.ofFloat(.4f, -3f * shakeFactor),
                Keyframe.ofFloat(.5f, 3f * shakeFactor),
                Keyframe.ofFloat(.6f, -3f * shakeFactor),
                Keyframe.ofFloat(.7f, 3f * shakeFactor),
                Keyframe.ofFloat(.8f, -3f * shakeFactor),
                Keyframe.ofFloat(.9f, 3f * shakeFactor),
                Keyframe.ofFloat(1f, 0));

        return ObjectAnimator.ofPropertyValuesHolder(view, pvhScaleX,
                pvhScaleY, pvhRotate).setDuration(1000);
    }
}

 
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