//依赖
//TabLayout
implementation 'com.android.support:design:27.+'
//Main
public class MainActivity extends AppCompatActivity {
private TabLayout tabLayout;
private ViewPager viewPager;
private List<Fragment> fs=new ArrayList<>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initViews();
}
private void initViews() {
tabLayout=findViewById(R.id.tablayout);
viewPager=findViewById(R.id.viewpager);
//viewpager添加Fragment
Fragment01 android = Fragment01.create("ANDROID");
fs.add(android);
Fragment02 ios = Fragment02.create("IOS");
fs.add(ios);
Fragment03 fuli = Fragment03.create("福利");
fs.add(fuli);
Fragment04 fuli1 = Fragment04.create("福利");
fs.add(fuli);
Fragment05 fuli2 = Fragment05.create("福利");
fs.add(fuli);
Fragment06 fuli3 = Fragment06.create("福利");
fs.add(fuli);
//实例化适配器
MyFragmentViewPager fragmentViewPager = new MyFragmentViewPager(getSupportFragmentManager(), fs);
viewPager.setAdapter(fragmentViewPager);
tabLayout.setSelectedTabIndicatorColor(Color.BLACK);
//添加选项卡
TabLayout.Tab tab1 = tabLayout.newTab();
tabLayout.addTab(tab1);
TabLayout.Tab tab2 = tabLayout.newTab();
tabLayout.addTab(tab2);
TabLayout.Tab tab3 = tabLayout.newTab();
tabLayout.addTab(tab3);
//将viewpager关联到tablayout
tabLayout.setupWithViewPager(viewPager);
//设置可以滑动
tabLayout.setTabMode(TabLayout.MODE_SCROLLABLE);
}
}
//适配器
public class MyFragmentViewPager extends FragmentPagerAdapter {
private List<Fragment> list;
public MyFragmentViewPager(FragmentManager fm, List<Fragment> list) {
super(fm);
this.list = list;
}
@Override
public Fragment getItem(int position) {
return list.get(position);
}
@Override
public int getCount() {
return list.size();
}
@Nullable
@Override
public CharSequence getPageTitle(int position) {
return list.get(position).getArguments().getString("title");
}
}
//fragment
public class Fragment01 extends Fragment {
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment01, container, false);
return view;
}
//定义一个方法进行接收
public static Fragment01 create(String title){
Bundle bundle = new Bundle();
bundle.putString("title",title);
Fragment01 fragment01 = new Fragment01();
fragment01.setArguments(bundle);
return fragment01;
}
}
//布局
<android.support.design.widget.TabLayout
android:id="@+id/tablayout"
android:layout_width="match_parent"
android:layout_height="40dp"/>
<android.support.v4.view.ViewPager
android:id="@+id/viewpager"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
/>