Tablayout with icons only

问题:

I am using design support to create tabs. I am also using ViewPager for swipable tabs.

Now, I don't know how to use only icons instead of texts in tabs. I tried finding out but didn't get any success.

My code:

Toolbar toolbar;
private TabLayout tabLayout;
private ViewPager viewPager;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    viewPager = (ViewPager) findViewById(R.id.pager);
    setupViewPager(viewPager);
    setupTablayout();
}

private void setupTablayout() {
    tabLayout = (TabLayout) findViewById(R.id.tabLayout);
    tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
    tabLayout.setupWithViewPager(viewPager);
}

class MyPagerAdapter extends FragmentPagerAdapter {

    private final List<Fragment> mFragmentList = new ArrayList<>();
    private final List<String> mFragmentTitleList = new ArrayList<>();

    public MyPagerAdapter(FragmentManager manager) {
        super(manager);
    }

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

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

    public void addFrag(Fragment fragment, String title) {
        mFragmentList.add(fragment);
        mFragmentTitleList.add(title);
    }

    @Override
    public CharSequence getPageTitle(int position) {
        mFragmentTitleList.get(position)
    }
}

private void setupViewPager(ViewPager viewPager) {
    MyPagerAdapter adapter = new MyPagerAdapter(getSupportFragmentManager());
    adapter.addFrag(new frag(), "CAT");
    adapter.addFrag(new frag(), "DOG");
    adapter.addFrag(new frag(), "BIRD");
    viewPager.setAdapter(adapter);
}

回答1:

One approach is setting the icons after TabLayout.setupWithViewPager() method.

mTabLayout.setupWithViewPager(mViewPager);
for (int i = 0; i < mTabLayout.getTabCount(); i++) {
  mTabLayout.getTabAt(i).setIcon(R.drawable.your_icon);
}

回答2:

The tutorial shown in the following link should cover what you want. https://github.com/codepath/android_guides/wiki/Google-Play-Style-Tabs-using-TabLayout#add-icons-to-tablayout

I copied the relevant section below.

Add Icons to TabLayout

Currently, the TabLayout class does not provide a clean abstraction model that allows for icons in your tab. There are many posted workarounds, one of which is to return a SpannableString, containing your icon in an ImageSpan, from your PagerAdapter's getPageTitle(position) method as shown in the code snippet below:

private int[] imageResId = {
        R.drawable.ic_one,
        R.drawable.ic_two,
        R.drawable.ic_three
};

// ...

@Override
public CharSequence getPageTitle(int position) {
    // Generate title based on item position
    // return tabTitles[position];
    Drawable image = context.getResources().getDrawable(imageResId[position]);
    image.setBounds(0, 0, image.getIntrinsicWidth(), image.getIntrinsicHeight());
    SpannableString sb = new SpannableString(" ");
    ImageSpan imageSpan = new ImageSpan(image, ImageSpan.ALIGN_BOTTOM);
    sb.setSpan(imageSpan, 0, 1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    return sb;
}

By default, the tab created by TabLayout sets the textAllCaps property to be true, which prevents ImageSpans from being rendered. You can override this behavior by changing the tabTextAppearance property.

  <style name="MyCustomTabLayout" parent="Widget.Design.TabLayout">
        <item name="tabTextAppearance">@style/MyCustomTextAppearance</item>
  </style>

  <style name="MyCustomTextAppearance" parent="TextAppearance.Design.Tab">
        <item name="textAllCaps">false</item>
  </style>

回答3:

In new version of TabLayout, google added TabItem which easily can add Icon through your XML with following code:

<android.support.design.widget.TabLayout
         app:tabTextColor="@color/gray"
         app:tabMode="fixed"
         app:tabBackground="@color/red"
         app:tabIndicatorHeight="4dp"
         app:tabIndicatorColor="@color/purple"
         app:tabPadding="2dp"
         app:tabSelectedTextColor="@color/white"
         app:tabMinWidth="64dp"
         android:layout_height="wrap_content"
         android:layout_width="match_parent">

     <!--add height and width to TabItem -->
     <android.support.design.widget.TabItem 
             android:text="@string/tab_text"/>

     <android.support.design.widget.TabItem
             android:icon="@drawable/ic_android"/>

 </android.support.design.widget.TabLayout>

See more here.

回答4:

try this

    public class GlobalActivity extends AppCompatActivity {
    Toolbar toolbar;
    ViewPager viewPager;
    TabLayout tabLayout;
    ViewPagerAdapter adapter;
    private int[] tabIcons = {
            R.drawable.home_ic,
            R.drawable.biz_ic,
            R.drawable.network_ic,
            R.drawable.offers_ic,
            R.drawable.message_ic_b
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_global_hub);
        tab();
    }
    public void tab(){
        viewPager = (ViewPager) findViewById(R.id.viewpager);
        setupViewPager(viewPager);
        tabLayout = (TabLayout) findViewById(R.id.tablayout);
        tabLayout.setupWithViewPager(viewPager);
        setupTabIcons();

    }
    private void setupTabIcons() {
        tabLayout.getTabAt(0).setIcon(tabIcons[0]);
        tabLayout.getTabAt(1).setIcon(tabIcons[1]);
        tabLayout.getTabAt(2).setIcon(tabIcons[2]);
        tabLayout.getTabAt(3).setIcon(tabIcons[3]);
        tabLayout.getTabAt(4).setIcon(tabIcons[4]);

    }
    public void setupViewPager(ViewPager viewPager){
        adapter = new ViewPagerAdapter(getSupportFragmentManager());
        adapter.addFrag(new GlHubFragment(),"HOME");
        adapter.addFrag(new BizForumFragment(), "BIZ FORUM");
        adapter.addFrag(new NetworkFragment(), "NETWORK");
        adapter.addFrag(new MessagesFragment(), "MESSAGEs");
        adapter.addFrag(new OfferFragmentActivity(), "OFFER");
        viewPager.setAdapter(adapter);
    }

    public class ViewPagerAdapter extends FragmentPagerAdapter{
        private final List<Fragment> mfragmentlist =new ArrayList<>();
        private final List<String> mFragmentTitleList = new ArrayList<>();
        public ViewPagerAdapter(FragmentManager fm) {
            super(fm);
        }

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

        @Override
        public int getCount() {
            return mfragmentlist.size();
        }
        public void addFrag(Fragment fragment,String title){
            mfragmentlist.add(fragment);
            mFragmentTitleList.add(title);
        }
        @Override
        public CharSequence getPageTitle(int position){
            return mFragmentTitleList.get(position);
        }
    }
}

回答5:

The easiest way I've found to use icons is to use Tablayout.Tab.setIcon(drawable). This also makes it easy to highlight the selected icon. If you want to do this, follow these steps.

Step 1. Add your images to the res.mipmap folders. (mipmap-mdpi, hdpi etc.) Judging by the other answers here it's also fine to put then in the res.drawable folders.

Step 2. Call setIcon on all your tabs after setting up your TabLayout and ViewPager. I did this in my AdapterTabs to keep the Activity tidy. So in your activity do this:

    tablayout = (TabLayout) findViewById(R.id.tab_layout);
    viewPager = (ViewPager) findViewById(R.id.viewPager);
    adapterTabs = new AdapterTabs(this, getSupportFragmentManager(), fragments, tablayout, viewPager);

    viewPager.setAdapter(adapterTabs);
    tablayout.setupWithViewPager(viewPager);
    adapterTabs.setTabIcons();

and in your AdapterTabs, which should extend FragmentPagerAdapter, put your setTabIcons() method.

    public void setTabTitlesToIcons() {
    Drawable icon1 = context.getResources().getDrawable(R.mipmap.ic_1);
    Drawable icon2 = context.getResources().getDrawable(R.mipmap.ic_2);
    Drawable icon3 = context.getResources().getDrawable(R.mipmap.ic_3);
    Drawable icon1Hilighted = context.getResources().getDrawable(R.mipmap.ic_1_selected);
    Drawable icon2Hilighted = context.getResources().getDrawable(R.mipmap.ic_2_selected);
    Drawable icon3Hilighted = context.getResources().getDrawable(R.mipmap.ic_3_selected);

    icons.add(icon1);
    icons.add(icon2);
    icons.add(icon3);
    iconsHilighted.add(icon1Hilighted);
    iconsHilighted.add(icon2Hilighted);
    iconsHilighted.add(icon3Hilighted);

    for(int i = 0; i < icons.size(); i++) {
        if(i == 0) {
            //noinspection ConstantConditions
            tabLayout.getTabAt(i).setIcon(iconsSelected.get(i));
        }
        else {
            //noinspection ConstantConditions
            tabLayout.getTabAt(i).setIcon(icons.get(i));
        }
    }
}

Make sure to store a reference to the two lists 'icons' and 'iconsHilighted'. You'll need them later. Also store a reference to the TabLayout and the ViewPager which you passed in from the activity.

Step 3. Make sure AdapterTabs.getPageTitle() returns null. At this point, if you run it you should see that the first icon is highlighted.

Step 4. Implement ViewPager.OnPageChangeListener in AdapterTabs and add that listener to your viewPager

    public AdapterTabs(Context context, FragmentManager fragmentManager, List<Fragment> fragments, TabLayout tabLayout, ViewPager viewPager) {
    super(fragmentManager);
    this.context = context;
    this.tabLayout = tabLayout;
    this.viewPager = viewPager;
    this.viewPager.addOnPageChangeListener(this);

    tabs.add(fragments.get(0));
    tabs.add(fragments.get(1));
    tabs.add(fragments.get(2));
}

Step 5. Update the icons in the tabs in the onPageSelected callback in your AdapterTabs.

    @Override
public void onPageSelected(int position) {
    for (int i = 0; i < tabs.size(); i++) {
        if(i == position) {
            //noinspection ConstantConditions
            tabLayout.getTabAt(i).setIcon(iconsSelected.get(i));
        }
        else {
            //noinspection ConstantConditions
            tabLayout.getTabAt(i).setIcon(icons.get(i));
        }
    }
}

Now you should see the hilighted icon being updated when you change tabs.

回答6:

None of these methods are elegant when using TabLayout as the ViewPager "decor" scenario. TabLayout Documentation Here is a simple extension of TabLayout and PagerAdapter that provides a simple drop in replacement for TabLayout that should be able to be used in either scenario without manually adding icons outside of the TabLayout class and following the usage of PagerAdapter to get the tab information.

/**
 * Created by JDL on 1/18/2017.
 */
public class TabLayoutExt extends TabLayout {

    protected ViewPager mViewPager;

    public abstract static class TabLayoutViewPagerAdapter extends PagerAdapter {
        public TabLayoutViewPagerAdapter() {
        }

        /**
         * This method may be called by the TabLayout to obtain an icon drawable
         * to for the specified tab. This method may return null
         * indicating no tab icon for this page. The default implementation returns
         * null.
         *
         * @param position The position of the title requested
         * @return A drawable icon for the requested page
         */
        public Drawable getPageIcon(Context context, int position) {
            return null;
        }
    }

    public TabLayoutExt(Context context) {
        super(context);
    }

    public TabLayoutExt(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public TabLayoutExt(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    protected void onAttachedToWindow() {
        //Cover the implicit setup in TabLayout
        if (mViewPager == null) {
            final ViewParent vp = getParent();
            if (vp instanceof ViewPager) {
                mViewPager = (ViewPager)vp;
            }

        }
        super.onAttachedToWindow();
    }

    public void addTab(@NonNull Tab tab, int position, boolean setSelected) {
        if (mViewPager != null && mViewPager.getAdapter() instanceof TabLayoutViewPagerAdapter) {
            Drawable icon = ((TabLayoutViewPagerAdapter) mViewPager.getAdapter()).getPageIcon(getContext(),position);
            tab.setIcon(icon);
        }
        super.addTab(tab,position,setSelected);

    }

    @Override
    public void setupWithViewPager(@Nullable ViewPager viewPager, boolean autoRefresh) {
        mViewPager = viewPager;
        super.setupWithViewPager(viewPager, autoRefresh);
    }
}

So all that needs be done is extend TabLayoutViewPagerAdapter instead of PageAdapter and implement getPageIcon(Context,int) instead of or in addition to title. The drop in TabLayoutExt in your XML file, instead of the normal TabLayout. This could be extended for further modifying the tab, either with a custom view instead or something else.

回答7:

In TabLayout, setting icon is easy:

getPageTitle(position) should return null (if you don't want title to show).

Next :

tabLayout.getTabAt(0).setIcon(resId);

tabLayout.getTabAt(1).setIcon(resId);

......

回答8:

Try this this will definitely work .

private TabLayout tabLayout;
private ViewPager viewPager;
private int[] tabIcons = {
        R.drawable.single,
        R.drawable.multiple};

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_contact_picker);

    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    toolbar.setTitle("Choose contact");
    setSupportActionBar(toolbar);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    tab();
}


public void tab(){
    viewPager = (ViewPager) findViewById(R.id.viewpager);
    setupViewPager(viewPager);
    tabLayout = (TabLayout) findViewById(R.id.tabs);
    tabLayout.setupWithViewPager(viewPager);
    setupTabIcons();
}

private void setupTabIcons() {
    tabLayout.getTabAt(0).setIcon(tabIcons[0]);
    tabLayout.getTabAt(1).setIcon(tabIcons[1]);

}

private void setupViewPager(ViewPager viewPager) {
    ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
    adapter.addFragment(new Login());
    adapter.addFragment(new Register());
    viewPager.setAdapter(adapter);
}

class ViewPagerAdapter extends FragmentPagerAdapter {
    private final List<Fragment> mFragmentList = new ArrayList<>();

    public ViewPagerAdapter(FragmentManager manager) {
        super(manager);
    }

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

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

    public void addFragment(Fragment fragment) {
        mFragmentList.add(fragment);

    }


}

回答9:

the simplest way is create new table by setting Icon on tablayout. below code will create two tab with icon only. use this code on onCreate() method

 tablayout = (TabLayout) findViewById(R.id.order_tablayout);
 tablayout.addTab( tablayout.newTab().setIcon(getResources().getDrawable(R.mipmap.ic_shopping_cart_white_24dp)) );
 tablayout.addTab( tablayout.newTab().setIcon(getResources().getDrawable(R.mipmap.ic_like2_fille_white_24dp)) );

回答10:

This may not be the best answer for all cases, but what I found did not solve my problem yet.

After having a look at Androids implementation of tabLayout.setupWithViewPager(ViewPager pager) I came up with a solution using just listeners.

The layout structure:

| LinearLayout (vertical)
|-- TabLayout (width: match_parent)
|---- TabItem (without text, just icons)
|---- TabItem
|---- ...
|-- ViewPager

Code for the both listeners:

tabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
    @Override
    public void onTabSelected(TabLayout.Tab tab) {
        pager.setCurrentItem(tab.getPosition());
    }

    @Override
    public void onTabUnselected(TabLayout.Tab tab) {
    }

    @Override
    public void onTabReselected(TabLayout.Tab tab) {
    }
});
pager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
    @Override
    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
        tabLayout.setScrollPosition(position, positionOffset, false);
    }

    @Override
    public void onPageSelected(int position) {
        TabLayout.Tab tab = tabLayout.getTabAt(position);
        if (tab != null) {
            tab.select();
        }
    }

    @Override
    public void onPageScrollStateChanged(int state) {
    }
});

Have a look at the tabLayout.setScrollPosition call inside OnPageChangeListener.onPageScrolled for the more or less good moving of the indicator while scrolling.

This may not work if the TabLayout's width is not set to match_parent (or must be scrollable).

Greetings