设计只有图标的支持库选项卡 [英] Design support library tabs with only icons

问题描述

我正在使用设计支持库来创建选项卡.默认情况下，它会创建带有文本的选项卡.如何创建只有图标的选项卡?如果它是当前选定的选项卡，我还想更改图标颜色.

I am using design support library to create tabs. By default it creates tabs with text. How can I create tabs with only icons? Also I want to change the icons color if it's current selected tab.

推荐答案

使用它来填充 viewPager:

Use this to populate the viewPager:

public class SectionPagerAdapter extends FragmentPagerAdapter {

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

    @Override
    public Fragment getItem(int position) {
        switch (position) {
            case 0:
                return mFragmentA;
            case 1:
                return mFragmentB;
            case 2:
                return mFragmentC;
            default:
                return null;
        }
    }

    @Override
    public int getCount() {
        return 3;
    }

    @Override
    public CharSequence getPageTitle(int position) {
        return ""; // This removes the title, as you wish
    }
}

然后在 onCreateView 中:

And then this in onCreateView:

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

viewPager.setAdapter(new SectionPagerAdapter(getActivity().getSupportFragmentManager()));
tabLayout.setupWithViewPager(viewPager);

也方便知道:

for (int i = 0; i < tabLayout.getTabCount(); i++) {
    int iconId = -1;
    switch (i) {
        case 0:
            iconId = R.drawable.icon1;
            break;
        case 1:
            iconId = R.drawable.icon2;
            break;
        case 2:
            iconId = R.drawable.icon3;
            break;
    }
    tabLayout.getTabAt(i).setIcon(iconId);
}

// Needed since support libraries version 23.0.0 
viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
    @Override
    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
    }

    @Override
    public void onPageSelected(int position) {
       tabLayout.getTabAt(position).select();
    }

    @Override
    public void onPageScrollStateChanged(int state) {
    }

});

tabLayout.setOnTabSelectedListener(new TabLayout.ViewPagerOnTabSelectedListener(viewPager) {
    @Override
    public void onTabSelected(TabLayout.Tab tab) {
        super.onTabSelected(tab);
    }
});

并更改所选标签的颜色:

And to change the selected tab color:

   tabLayout.setSelectedTabIndicatorColor(colorId); // For the line
   if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        for (int i = 0; i < tabLayout.getTabCount(); i++) {
            tabLayout.getTabAt(i).getIcon().setTint(getResources().getColor(R.color.gray));
        }
        tabLayout.getTabAt(selectedTabPosition).getIcon().setTint(colorId);
    }

这篇关于设计只有图标的支持库选项卡的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！