android 固定进度无限旋转的环形效果

效果图

Activity 中使用

val rotation: ObjectAnimator = ObjectAnimator.ofFloat(progressBar, "rotation", 0f, 360f)
rotation.duration = ·000 // 旋转持续时间为2秒
rotation.repeatCount = ObjectAnimator.INFINITE // 设置为无限循环
rotation.interpolator = LinearInterpolator() // 设置匀速插值器
rotation.start()

布局样式

<ProgressBarandroid:id="@+id/progressBar"android:background="@drawable/pb_circular_bg"android:progressDrawable="@drawable/pd_circular_progress"android:indeterminateOnly="false"android:indeterminate="false"android:layout_width="50dp"android:layout_height="50dp"android:max="100"android:progress="25"/>

背景样式 pb_circula_bg.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"android:innerRadiusRatio="3"android:shape="ring"android:thicknessRatio="8"android:useLevel="false"><solid android:color="@color/theme_c_d9" />
</shape>

进度样式 pd_circular_progress.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"android:innerRadiusRatio="3"android:shape="ring"android:thicknessRatio="8"android:useLevel="true"><solid android:color="@color/colorPrimary" />
</shape>