package com.luck.picture.lib.tools;
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import android.animation.AnimatorSet;
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import android.animation.ObjectAnimator;
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import android.view.View;
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import android.view.animation.RotateAnimation;
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import android.widget.ImageView;
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/**
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* @author：luck
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* @date：2019-11-21 19:20
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* @describe：动画相关
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*/
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public class AnimUtils {
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private final static int DURATION = 450;
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public static void zoom(View view, boolean isZoomAnim) {
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if (isZoomAnim) {
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AnimatorSet set = new AnimatorSet();
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set.playTogether(
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ObjectAnimator.ofFloat(view, "scaleX", 1f, 1.12f),
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ObjectAnimator.ofFloat(view, "scaleY", 1f, 1.12f)
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);
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set.setDuration(DURATION);
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set.start();
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}
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}
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public static void disZoom(View view, boolean isZoomAnim) {
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if (isZoomAnim) {
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AnimatorSet set = new AnimatorSet();
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set.playTogether(
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ObjectAnimator.ofFloat(view, "scaleX", 1.12f, 1f),
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ObjectAnimator.ofFloat(view, "scaleY", 1.12f, 1f)
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);
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set.setDuration(DURATION);
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set.start();
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}
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}
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/**
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* 箭头旋转动画
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*
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* @param arrow
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* @param flag
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*/
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public static void rotateArrow(ImageView arrow, boolean flag) {
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float pivotX = arrow.getWidth() / 2f;
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float pivotY = arrow.getHeight() / 2f;
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// flag为true则向上
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float fromDegrees = flag ? 180f : 180f;
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float toDegrees = flag ? 360f : 0f;
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//旋转动画效果 参数值 旋转的开始角度 旋转的结束角度 pivotX x轴伸缩值
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RotateAnimation animation = new RotateAnimation(fromDegrees, toDegrees,
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pivotX, pivotY);
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//该方法用于设置动画的持续时间，以毫秒为单位
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animation.setDuration(350);
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//启动动画
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arrow.startAnimation(animation);
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}
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}
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