效果图

app项目中build.gradle添加：

implementation 'com.yayaG.colorTrackTabLayout:colortracklayout:1.0.0'

在主项目中的build.gradle添加

maven { url 'https://dl.bintray.com/wangjinya/maven' }

allprojects {
    repositories {
        google()
        jcenter()
        maven { url 'https://maven.google.com' }
        maven { url 'https://dl.bintray.com/wangjinya/maven' }
    }
}

Adapter 可继承：

ColorTrackFragmentAdapter

ColorTrackAdapter

xml中：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="10dp"
    tools:context=".MainActivity">

    <com.jackwang.colortracklayout.ColorTrackLayout
        android:id="@+id/tab_layout"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        app:tabMode="scrollable"
        />

    <androidx.viewpager.widget.ViewPager
        android:id="@+id/viewpager"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"/>

</LinearLayout>

怎么用呢？

用法很简单。可以直接继承

public class MyAdapter extends ColorTrackFragmentAdapter {
    private List<String> titles = new ArrayList<>();
    .....
   
    @Nullable
    @Override
    public List<String> getTitles() {
        return titles;
    }

    @Nullable
    @Override
    public CharSequence getPageTitle(int position) {
        return titles.get(position);
    }
}

Activity中调用：

MyAdapter adapter = new MyAdapter(getSupportFragmentManager(), this);
mViewPager.setAdapter(adapter);

//默认颜色和字体滑动颜色
mTabLayout.setNormalColorAndSelectedColor(Color.BLACK, Color.GREEN);
//字体大小
mTabLayout.setTabLayoutTextSize(18);

mTabLayout.setupWithViewPager(mViewPager, adapter);

基本就是这样，喜欢就点个star。你的赞美是我的努力源泉。