Tablayout顯示導航欄
阿新 • • 發佈:2018-11-02
1.首先,只要在build.gradle中加入compile ‘com.android.support:design:22.2.0’即可。
2.佈局檔案
<android.support.design.widget.TabLayout
android:id="@+id/tablayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabMode="scrollable"<!-- 加上這句話,代表tab數量大於螢幕寬度時,能實現水平滾動-->
tabIndicatorColor="@android:color/transparent"
>
<android.support.v4.view.ViewPager
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:id="@+id/pager"></android.support.v4.view.ViewPager>
3.activity介面程式碼
//存放資料的集合(網路請求的資料),也就是請求介面返回的導航欄的資訊裝到集合中
private List<String> li=new ArrayList<>();
//存放fragment的集合
private List<Fragment> fragments = new ArrayList<Fragment();
//初始化view
private void initView() {
pager = (ViewPager) getView().findViewById(R.id.pager);
tablayout = (TabLayout) getView().findViewById(R.id.tablayout);
}
//通過介面回撥得到網路請求的資料
@Override
public void callBackhome(Object o) {
newsBean news= (newsBean) o;
for (int i = 0; i < news.getResult().getDate().size(); i++) {
//遍歷集合拿到title
li.add(news.getResult().getDate().get(i).getTitle());
//迴圈建立fragment
MyFragment frag=new MyFragment(news.getResult().getDate().get(i).getUri());
fragments.add(frag);
}
FragmentAdapter adapter=new FragmentAdapter(fragments,li,getActivity().getSupportFragmentMan ager());
pager.setAdapter(adapter);
//關聯
tablayout.setupWithViewPager(pager);
tablayout.setTabTextColors(Color.BLACK,Color.RED);
}
介面卡
public class FragmentAdapter extends FragmentPagerAdapter {
private List<String> list=new ArrayList<>();
private List<Fragment> fragments;
public FragmentAdapter(List<Fragment> fragments,List<String> list, FragmentManager fm) {
super(fm);
this.fragments = fragments;
this.list=list;
}
@Override
public Fragment getItem(int position) {
return fragments.get(position);
}
@Override
public int getCount() {
return list.size();
}
@Override
public CharSequence getPageTitle(int position) {
return list.get(position);
}
}