我无法在视图页面上垂直滚动。当我在子布局中使用NestedScrollView时,页面变为空白。我尝试了很多解决方案,但都失败了。
这是我的主要片段nav_swipe.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.v4.view.ViewPager
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior" >
<android.support.v4.view.PagerTitleStrip
android:id="@+id/pager_title_strip"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:background="#33b5e5"
android:paddingBottom="4dp"
android:paddingTop="4dp"
android:textColor="#fff" />
</android.support.v4.view.ViewPager>
</android.support.design.widget.CoordinatorLayout>
这是子片段布局:fragment_a.xml,其中我使用了嵌套滚动视图,但没有找到解决方案。
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/constraintLayout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/text1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:textColor="@color/colorPrimaryDark"
android:layout_marginBottom="@dimen/activity_vertical_margin"
android:layout_marginRight="@dimen/activity_horizontal_margin"
android:layout_marginLeft="@dimen/activity_horizontal_margin"
android:layout_marginTop="@dimen/activity_vertical_margin"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="@+id/constraintLayout"
tools:layout_constraintLeft_creator="1"
tools:layout_constraintTop_creator="1" />
</android.support.constraint.ConstraintLayout>
这是SwipeNav.java文件。
public class SwipeNav extends Fragment {
private MyPagerAdapter myPagerAdapter;
private ViewPager viewPager;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.nav_swipe, container, false);
myPagerAdapter = new MyPagerAdapter(getChildFragmentManager(),getContext());
viewPager = (ViewPager) rootView.findViewById(R.id.pager);
viewPager.setAdapter(myPagerAdapter);
return rootView;
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
这是MyPagerAdapter.java文件
public class MyPagerAdapter extends FragmentStatePagerAdapter {
private Context context;
private String[] tabTitlesArray = null;
public MyPagerAdapter(FragmentManager fm, Context context) {
super(fm);
tabTitlesArray = context.getResources().getStringArray(R.array.tab_titles);
this.context= context;
}
@Override
public Fragment getItem(int i) {
Fragment fragment = new AFragment();
Bundle args = new Bundle();
args.putString(AFragment.ARG_OBJECT, tabTitlesArray[i]);
fragment.setArguments(args);
return fragment;
}
@Override
public int getCount() {
return tabTitlesArray.length;
}
@Override
public CharSequence getPageTitle(int position) {
//return tabTitleArray[position];
return "OBJECT " + (position + 1);
}
}
这是AFragment.java文件。
public class AFragment extends Fragment {
public static final String ARG_OBJECT = "object";
public AFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_a, container, false);
Bundle args = getArguments();
((TextView) rootView.findViewById(R.id.text1)).setText(args.getString(ARG_OBJECT));
return rootView;
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
}
}
fragment_a.xml
中如何使用ScrollView
吗? - Mirwise Khan