android花了点时间研究三种方法实现旋转动画

简书链接:android花了点时间研究三种方法实现旋转动画
文章字数：991,阅读全文大约需要3分钟
这里不介绍自定义的了,我之前用的是spinkit的动画,360加固后各种无响应,搞得我恐惧了,

第一种

public class ProgressBar extends androidx.appcompat.widget.AppCompatImageView {
    /*    public ProgressBar(Context context, Style style, int color) {
        super(context, null, color);
        initAnimator();
    }*/

    public ProgressBar(Context context) {

        super(context);
        initAnimator(context);
    }

    public ProgressBar(Context context, AttributeSet attrs) {
        super(context, attrs);
        initAnimator(context);
    }

    public ProgressBar(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        initAnimator(context);
    }

    private void initAnimator(Context context) {
//        setImageResource(R.drawable.loading_progress);

// 开始播放动画


   /*     ColorStateList colorStateList = new ColorStateList(new int[][]{{android.R.attr.state_pressed, android.R.attr.state_enabled}, {android.R.attr.state_pressed}}, new int[]{Color.RED, Color.BLUE});
        setImageTintList(colorStateList);*/
//        setImageTintList(ColorStateList.valueOf(AppUtils.attrFetchAttrValue(getContext(), R.attr.defaultThemeColor)));

        Drawable up = ContextCompat.getDrawable(context, R.drawable.icon_loading_progress);
        Drawable drawableUp = DrawableCompat.wrap(up);
        DrawableCompat.setTint(drawableUp, AppUtils.attrFetchColor(context, R.attr.defaultThemeColor));
        this.setImageDrawable(drawableUp);

// 设置动画播放的时间
        AnimationSet animationSet = new AnimationSet(true);
        //参数1：从哪个旋转角度开始
        //参数2：转到什么角度
        //后4个参数用于设置围绕着旋转的圆的圆心在哪里
        //参数3：确定x轴坐标的类型，有ABSOLUT绝对坐标、RELATIVE_TO_SELF相对于自身坐标、RELATIVE_TO_PARENT相对于父控件的坐标
        //参数4：x轴的值，0.5f表明是以自身这个控件的一半长度为x轴
        //参数5：确定y轴坐标的类型
        //参数6：y轴的值，0.5f表明是以自身这个控件的一半长度为x轴
        RotateAnimation rotateAnimation = new RotateAnimation(0, 360*4,
                Animation.RELATIVE_TO_SELF, 0.5f,
                Animation.RELATIVE_TO_SELF, 0.5f);
        rotateAnimation.setDuration(6000);
        rotateAnimation.setRepeatMode(Animation.INFINITE);
        rotateAnimation.setRepeatCount(Animation.INFINITE);
        animationSet.addAnimation(rotateAnimation);
        animationSet.setRepeatMode(Animation.INFINITE);
        animationSet.setRepeatCount(Animation.INFINITE);
        this.startAnimation(animationSet);
    }

    @Override
    protected void onAttachedToWindow() {
        super.onAttachedToWindow();
    }

    @Override
    protected void onVisibilityChanged(@NonNull View changedView, int visibility) {
        super.onVisibilityChanged(changedView, visibility);
    }

    @Override
    protected void onDetachedFromWindow() {
        super.onDetachedFromWindow();
    }
}

设置setRepeatMode 得设置在子动画否则无法重复

第二种

java基于progressbar设置

public class ProgressBar1 extends ProgressBar {

    public ProgressBar1(Context context) {

        super(context);
        init(context);
    }

    public ProgressBar1(Context context, AttributeSet attrs) {
        super(context, attrs);
        init(context);
    }

    public ProgressBar1(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init(context);
    }

    public ProgressBar1(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);
        init(context);
    }

    private void init(Context context) {
        RotateDrawable rotateDrawable = new RotateDrawable();
        Drawable drawable = ContextCompat.getDrawable(context, R.drawable.drawable_progerss1);
        drawable.setTint(AppUtils.attrFetchColor(context, R.attr.defaultThemeColor));
        rotateDrawable.setDrawable(drawable);
        rotateDrawable.setPivotX(0.5f);
        rotateDrawable.setPivotXRelative(true);
        rotateDrawable.setPivotYRelative(true);
        rotateDrawable.setPivotY(0.5f);
        rotateDrawable.setFromDegrees(0);
        rotateDrawable.setToDegrees(360);
        setIndeterminateDrawable(drawable);
/*setind
//setInd
        android:indeterminateDuration="2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:indeterminateBehavior="repeat"*/
    }

    @Override
    protected void onAttachedToWindow() {
        super.onAttachedToWindow();
    }

    @Override
    protected void onDetachedFromWindow() {
        super.onDetachedFromWindow();
    }
}

需要借助drawalbe/xml drawable_progerss1

<?xml version="1.0" encoding="utf-8"?>
<animated-rotate android:drawable="@drawable/icon_loading_progress"
    android:fromDegrees="0"
    android:pivotX="50%"
    android:pivotY="50%"
    android:toDegrees="5000"
    xmlns:android="http://schemas.android.com/apk/res/android"></animated-rotate>

第三种也是如此,第二种由于无法代码修改(除非反射) 速度,第二种通常只能通过设置大角度来加速了

第三种

自带 drawable_progress或者drawable_progress1一样的

<ProgressBar
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:indeterminateBehavior="repeat"
        android:indeterminateDrawable="@drawable/drawable_progress"
        android:indeterminateDuration="3000" />

drawable_progress

<animated-rotate xmlns:android="http://schemas.android.com/apk/res/android"
    android:fromDegrees="0"
    android:pivotX="50%"
    android:pivotY="50%"
    android:toDegrees="360">
    <shape
        android:innerRadius="8dp"
        android:shape="ring"
        android:thickness="3dp"
        android:useLevel="false">
        <gradient
            android:centerY="0.50"
            android:endColor="#cccccc"
            android:startColor="?attr/defaultThemeColor"
            android:type="sweep"
            android:useLevel="false" />
    </shape>

    <!--  android:pivotX     动画执行的起点x坐标 50%代表相对自身宽度的
    android:innerRadius  内环的半径
    android:thickness  环的厚度
    android:useLevel  只有当我们的shape使用在LevelListDrawable中时，这个值为true，否则为false
    android:centerY 渐变中心Y的相对位置，值为0-1
    android:type  渐变类型，还有linear,radial两种类型，线性渐变和放射渐变-->

</animated-rotate>

文章中的图片资源 icon_loading_progress

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="210.4dp"
    android:height="200dp"
    android:viewportWidth="1077"
    android:viewportHeight="1024">
  <path
      android:pathData="M89.8,178.1a149.7,148.4 0,1 0,299.4 0,149.7 148.4,0 1,0 -299.4,0Z"
      android:fillColor="#E44232"/>
  <path
      android:pathData="M0,504.6a119.8,118.7 0,1 0,239.5 0,119.8 118.7,0 1,0 -239.5,0Z"
      android:fillColor="#E44232"
      android:fillAlpha="0.9"/>
  <path
      android:pathData="M104.8,794a112.3,111.3 0,1 0,224.6 0,112.3 111.3,0 1,0 -224.6,0Z"
      android:fillColor="#E44232"
      android:fillAlpha="0.8"/>
  <path
      android:pathData="M434.2,920.1a104.8,103.9 0,1 0,209.6 0,104.8 103.9,0 1,0 -209.6,0Z"
      android:fillColor="#E44232"
      android:fillAlpha="0.7"/>
  <path
      android:pathData="M763.5,808.8a97.3,96.5 0,1 0,194.6 0,97.3 96.5,0 1,0 -194.6,0Z"
      android:fillColor="#E44232"
      android:fillAlpha="0.6"/>
  <path
      android:pathData="M913.2,482.3a82.3,81.6 0,1 0,164.7 0,82.3 81.6,0 1,0 -164.7,0Z"
      android:fillColor="#E44232"
      android:fillAlpha="0.5"/>
  <path
      android:pathData="M808.4,185.5a67.4,66.8 0,1 0,134.7 0,67.4 66.8,0 1,0 -134.7,0Z"
      android:fillColor="#E44232"
      android:fillAlpha="0.4"/>
  <path
      android:pathData="M524,51.9a52.4,51.9 0,1 0,104.8 0,52.4 51.9,0 1,0 -104.8,0Z"
      android:fillColor="#E44232"
      android:fillAlpha="0.3"/>
</vector>