我将从Android源代码中提取drawables和xml，并将其颜色更改为红色。 以下是我如何完成mdpi drawables的示例:

自定义red_scrubber_control.xml(添加到res/drawable):

<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:drawable="@drawable/red_scrubber_control_disabled_holo" android:state_enabled="false"/>
    <item android:drawable="@drawable/red_scrubber_control_pressed_holo" android:state_pressed="true"/>
    <item android:drawable="@drawable/red_scrubber_control_focused_holo" android:state_selected="true"/>
    <item android:drawable="@drawable/red_scrubber_control_normal_holo"/>
</selector>

自定义:red_scrubber_progress.xml

<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >

    <item
        android:id="@android:id/background"
        android:drawable="@drawable/red_scrubber_track_holo_light"/>
    <item android:id="@android:id/secondaryProgress">
        <scale
            android:drawable="@drawable/red_scrubber_secondary_holo"
            android:scaleWidth="100%" />
    </item>
    <item android:id="@android:id/progress">
        <scale
            android:drawable="@drawable/red_scrubber_primary_holo"
            android:scaleWidth="100%" />
    </item>

</layer-list>

然后复制所需的绘图从Android源代码，我从这个链接

为每个hdpi, mdpi, xhdpi复制这些绘图是很好的。例如，我只使用mdpi:

然后用Photoshop把颜色从蓝色改为红色:

red_scrubber_control_disabled_holo.png:

red_scrubber_control_focused_holo.png:

red_scrubber_control_normal_holo.png:

red_scrubber_control_pressed_holo.png:

red_scrubber_primary_holo.9.png:

red_scrubber_secondary_holo.9.png:

red_scrubber_track_holo_light.9.png:

添加搜索栏布局:

<SeekBar
    android:id="@+id/seekBar1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:progressDrawable="@drawable/red_scrubber_progress"
    android:thumb="@drawable/red_scrubber_control" />

结果:

我改变了background_fill.xml

<?xml version="1.0" encoding="UTF-8"?>
  <shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="line" >
<size android:height="1dp" />
<gradient
    android:angle="0"
    android:centerColor="#616161"
    android:endColor="#616161"
    android:startColor="#616161" />
<corners android:radius="0dp" />
<stroke
    android:width="1dp"
    android:color="#616161" />
<stroke
    android:width="1dp"
    android:color="#616161" />
</shape>

和progress_fill。xml

<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="line" >
<size android:height="1dp" />
<gradient
    android:angle="0"
    android:centerColor="#fafafa"
    android:endColor="#fafafa"
    android:startColor="#fafafa" />
<corners android:radius="1dp" />
<stroke
    android:width="1dp"
    android:color="#cccccc" />
<stroke
    android:width="1dp"
    android:color="#cccccc" />
 </shape>

制作1dp高度的背景和进度。

只需用你的颜色替换颜色属性

background.xml

<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="line">

    <stroke android:width="1dp" android:color="#D9D9D9"/>
    <corners android:radius="1dp" />

</shape>

progress.xml

<shape xmlns:android="http://schemas.android.com/apk/res/android"
     android:shape="line">

    <stroke android:width="1dp" android:color="#2EA5DE"/>
    <corners android:radius="1dp" />

</shape>

style.xml

<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >

    <item
        android:id="@android:id/background"
        android:drawable="@drawable/seekbar_background"/>
    <item android:id="@android:id/progress">
        <clip android:drawable="@drawable/seekbar_progress" />
    </item>

</layer-list>

thumb.xml

<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="oval">

    <size android:height="30dp" android:width="30dp"/>
    <stroke android:width="18dp" android:color="#882EA5DE"/>
    <solid android:color="#2EA5DE" />
    <corners android:radius="1dp" />

</shape>

在材质组件库1.2.0版本中，你可以使用新的Slider组件。

 <com.google.android.material.slider.Slider
       android:valueFrom="0"
       android:valueTo="300"
       android:value="200"
       android:theme="@style/slider_red"
       />

你可以使用如下方法覆盖默认颜色:

  <style name="slider_red">
    <item name="colorPrimary">#......</item>
  </style>

否则，你可以在布局中使用这些属性来定义颜色或颜色选择器:

   <com.google.android.material.slider.Slider
       app:activeTrackColor="@color/...."
       app:inactiveTrackColor="@color/...."
       app:thumbColor="@color/...."
       />

或者你可以使用自定义样式:

 <style name="customSlider" parent="Widget.MaterialComponents.Slider">
    <item name="activeTrackColor">@color/....</item>
    <item name="inactiveTrackColor">@color/....</item>
    <item name="thumbColor">@color/....</item>
  </style>

如果你看一下Android资源，查找栏实际上使用图像。

你必须创建一个上下透明的可绘制对象，比如10px，中心5px的线是可见的。

参考附图。你需要把它转换成NinePatch。

输出:

更改进度颜色:

int normalColor = ContextCompat.getColor(context, R.color.normal_color);
int selectedColor = ContextCompat.getColor(context, R.color.selected_color);
Drawable normalDrawable = new ColorDrawable(normalColor);
Drawable selectedDrawable = new ColorDrawable(selectedColor);
ClipDrawable clipDrawable = new ClipDrawable(selectedDrawable, Gravity.LEFT, ClipDrawable.HORIZONTAL);
Drawable[] layers = {normalDrawable, clipDrawable, clipDrawable};
LayerDrawable seekbarDrawable = new LayerDrawable(layers);
seekBar.setProgressDrawable(seekbarDrawable);

改变拇指颜色:

int thumbColor = ContextCompat.getColor(context, R.color.thumb_color);
Drawable unwrappedDrawable = AppCompatResources.getDrawable(context, R.drawable.ic_seekbar_thumb);
assert unwrappedDrawable != null;
Drawable wrappedDrawable = DrawableCompat.wrap(unwrappedDrawable);
DrawableCompat.setTint(wrappedDrawable, thumbColor);
seekBar.setThumb(wrappedDrawable);