要在Android中创建具有不同颜色的水平标签，您可以使用TabLayout和TabItem来实现。以下是一个示例代码：

1. 在XML布局文件中添加TabLayout和ViewPager：

2. 在Java代码中设置ViewPager适配器和TabLayout：

TabLayout tabLayout = findViewById(R.id.tab_layout);
ViewPager viewPager = findViewById(R.id.view_pager);

TabAdapter adapter = new TabAdapter(getSupportFragmentManager());
adapter.addFragment(new Fragment1(), "Tab 1");
adapter.addFragment(new Fragment2(), "Tab 2");
adapter.addFragment(new Fragment3(), "Tab 3");

viewPager.setAdapter(adapter);
tabLayout.setupWithViewPager(viewPager);

3. 创建TabAdapter类来设置ViewPager适配器：

public class TabAdapter extends FragmentPagerAdapter {
    private List fragmentList = new ArrayList<>();
    private List fragmentTitleList = new ArrayList<>();

    public TabAdapter(FragmentManager fm) {
        super(fm);
    }

    public void addFragment(Fragment fragment, String title) {
        fragmentList.add(fragment);
        fragmentTitleList.add(title);
    }

    @Override
    public Fragment getItem(int position) {
        return fragmentList.get(position);
    }

    @Override
    public int getCount() {
        return fragmentList.size();
    }

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

4. 创建不同颜色的Fragment，并在其中设置标签的颜色：

public class Fragment1 extends Fragment {
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_layout, container, false);
        TextView textView = view.findViewById(R.id.tab_text);
        textView.setText("Fragment 1");
        textView.setBackgroundColor(getResources().getColor(R.color.colorFragment1));
        return view;
    }
}

public class Fragment2 extends Fragment {
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_layout, container, false);
        TextView textView = view.findViewById(R.id.tab_text);
        textView.setText("Fragment 2");
        textView.setBackgroundColor(getResources().getColor(R.color.colorFragment2));
        return view;
    }
}

public class Fragment3 extends Fragment {
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_layout, container, false);
        TextView textView = view.findViewById(R.id.tab_text);
        textView.setText("Fragment 3");
        textView.setBackgroundColor(getResources().getColor(R.color.colorFragment3));
        return view;
    }
}

5. 创建fragment_layout.xml文件来定义标签的布局：

确保在res/values/colors.xml文件中定义了颜色资源，例如：

    #3F51B5
    #FF0000
    #00FF00
    #0000FF

这样，您就可以创建具有不同颜色的水平标签了。