Android自定义ProgressBar写法

效果预览

<ProgressBar
            android:id="@+id/progressBar"
            app:layout_constraintTop_toBottomOf="@id/layout_clock_logo"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            android:layout_marginTop="30dp"
            android:layout_width="@dimen/progress_bar_width"
            android:layout_height="wrap_content"
            android:max="100"
            android:progress="15"
            style="@style/MyProgressBar"/>

 <style name="MyProgressBar" parent="@android:style/Widget.ProgressBar.Horizontal">
        <item name="android:maxHeight">20dip</item>
        <item name="android:minHeight">15dip</item>
        <item name="android:indeterminateOnly">false</item>
        <item name="android:indeterminateDrawable">@android:drawable/progress_indeterminate_horizontal</item>
        <item name="android:progressDrawable">@drawable/progressbar_h1</item>
</style>

progressbar_h1.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:id="@android:id/background">
        <shape>
            <corners android:radius="20dp" />
            <stroke
                android:width="1dp"
                android:color="#ffffff" />
            <gradient
                android:angle="0"
                android:endColor="@color/transparent"
                android:startColor="@color/transparent" />
            <padding
                android:bottom="3dp"
                android:left="3dp"
                android:right="3dp"
                android:top="3dp" />
        </shape>
    </item>
    <item android:id="@android:id/progress">
        <clip>
            <scale
                android:drawable="@drawable/progressbar_h_shape1"
                android:scaleWidth="100%" />
        </clip>
    </item>
</layer-list>

progressbar_h_shape1.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">

    <corners android:radius="20dp" />
    <gradient
        android:angle="0"
        android:endColor="@color/progress_color"
        android:startColor="@color/progress_color" />

</shape>

本文地址：https://blog.csdn.net/lujianfeiccie2009/article/details/108864261