今天在尝试 Tablayout 与 ViewPager结合使用,结果遇到下面问题。
当我滑动到如图所示的位置时(由Tab2 向Tab 3 过度,恰好Tab3 的颜色改变时):
此时,松开,就会发生下面的情况:
Tab3 的颜色改变,但是 指示器和 下面的ViewPager 都属于 Tab2 。
希望有朋友帮忙解答一下。
代码简单,只贴出主要代码了。
布局文件XML
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivityFragment">
<android.support.design.widget.TabLayout
android:id="@+id/tabLayout"
style="@style/MyTabLayout"
android:layout_width="match_parent"
android:layout_height="48dp"
android:background="@android:color/black" />
<android.support.v4.view.ViewPager
android:id="@+id/viewPager"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
主界面的代码 (Fragment),ViewPager的代码就不贴了,如果有需要 可以再贴。
public class MainActivityFragment extends Fragment {
private TabLayout mTabLayout;
private ViewPager mViewPager;
private SimpleAdapter mAdapter;
private List<ViewPagerFragment> mFragmentList;
String[] mTitleArray = {"Tab 1", "Tab 2", "Tab 3", "Tab 4"};
public MainActivityFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_main, container, false);
mTabLayout = (TabLayout) view.findViewById(R.id.tabLayout);
mViewPager = (ViewPager) view.findViewById(viewPager);
int size = mTitleArray.length;
mFragmentList = new ArrayList<>();
for (int index = 0; index < size; index++) {
ViewPagerFragment frag1 = new ViewPagerFragment();
frag1.setTitle("Title " + (index + 1));
mFragmentList.add(frag1);
}
if (mTitleArray.length > 4) {
mTabLayout.setTabMode(TabLayout.MODE_SCROLLABLE);
} else {
mTabLayout.setTabMode(TabLayout.MODE_FIXED);
}
mAdapter = new SimpleAdapter(getChildFragmentManager());
mAdapter.setFragmentList(mFragmentList);
mAdapter.setTitleArray(mTitleArray);
mViewPager.setAdapter(mAdapter);
mViewPager.setCurrentItem(0);
mTabLayout.setupWithViewPager(mViewPager);
mTabLayout.setTabsFromPagerAdapter(mAdapter);
return view;
}
class SimpleAdapter extends FragmentStatePagerAdapter {
private List<ViewPagerFragment> mList;
private String[] mArray;
public SimpleAdapter(FragmentManager fm) {
super(fm);
}
public void setFragmentList(List<ViewPagerFragment> list) {
mList = list;
}
public void setTitleArray(String[] array) {
mArray = array;
}
@Override
public Fragment getItem(int position) {
return mList.get(position);
}
@Override
public CharSequence getPageTitle(int position) {
return mArray[position];
}
@Override
public int getCount() {
return mList.size();
}
}
}