How to make scrollable tab in Android?

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后悔当初
后悔当初 2020-12-13 21:19

I have 9 tab but in fill mode. I want to make these thabs scrollable. But i dont know the trick. I tried many methods but still nothing.

My Activity :



        
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4条回答
  • 2020-12-13 21:27

    Simply just put app:tabMode="scrollable" inside the xml.

    Eg:

    <android.support.design.widget.TabLayout
        android:id="@+id/tabs"
        android:background="@color/colorPrimary"
        app:tabMode="scrollable"
        app:tabTextColor="#ccc"
        app:tabIndicatorColor="@android:color/white"
        app:tabSelectedTextColor="@android:color/white"
        android:layout_width="match_parent"
        android:layout_height="40dp" />
    
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  • 2020-12-13 21:29

    Set the Value of setTabMode to TabLayout.MODE_SCROLLABLE

    tabLayout.setTabMode(TabLayout.MODE_SCROLLABLE);
    

    And, you will be able to scroll tabs horizontally.

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  • 2020-12-13 21:44

    For Kotlin Users here is the code

    val tabLayout = findViewById(R.id.tabs) as TabLayout
    
    tabLayout.tabMode = TabLayout.MODE_SCROLLABLE
    
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  • 2020-12-13 21:49

    I tried to set tab gravity to MODE_SCROLLABLE

    That is not a gravity value. That is a value to be passed to setTabMode() on the TabLayout (tabs.setTabMode(TabLayout.MODE_SCROLLABLE)).

    This sample project from this book has an activity that toggles between three fixed tabs and ten scrollable tabs:

    /***
      Copyright (c) 2012-15 CommonsWare, LLC
      Licensed under the Apache License, Version 2.0 (the "License"); you may not
      use this file except in compliance with the License. You may obtain a copy
      of the License at http://www.apache.org/licenses/LICENSE-2.0. Unless required
      by applicable law or agreed to in writing, software distributed under the
      License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
      OF ANY KIND, either express or implied. See the License for the specific
      language governing permissions and limitations under the License.
    
      From _The Busy Coder's Guide to Android Development_
        https://commonsware.com/Android
     */
    
    package com.commonsware.android.tablayout;
    
    import android.os.Bundle;
    import android.support.design.widget.TabLayout;
    import android.support.v4.view.ViewPager;
    import android.support.v7.app.AppCompatActivity;
    import android.view.Menu;
    import android.view.MenuItem;
    
    public class MainActivity extends AppCompatActivity {
      private SampleAdapter adapter;
      private TabLayout tabs;
    
      @Override
      public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
    
        ViewPager pager=(ViewPager)findViewById(R.id.pager);
    
        adapter=new SampleAdapter(this, getSupportFragmentManager());
        pager.setAdapter(adapter);
    
        tabs=(TabLayout)findViewById(R.id.tabs);
        tabs.setupWithViewPager(pager);
        tabs.setTabMode(TabLayout.MODE_FIXED);
      }
    
      @Override
      public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.actions, menu);
    
        return(super.onCreateOptionsMenu(menu));
      }
    
      @Override
      public boolean onOptionsItemSelected(MenuItem item) {
        if (item.getItemId()==R.id.fixed) {
          item.setChecked(!item.isChecked());
    
          if (item.isChecked()) {
            adapter.setPageCount(3);
            tabs.setTabMode(TabLayout.MODE_FIXED);
          }
          else {
            adapter.setPageCount(10);
            tabs.setTabMode(TabLayout.MODE_SCROLLABLE);
          }
    
          adapter.notifyDataSetChanged();
          tabs.setTabsFromPagerAdapter(adapter);
    
          return(true);
        }
    
        return(super.onOptionsItemSelected(item));
      }
    }
    
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