我正在尝试在BottomSheetDialogFragment中设置一个viewpager,但总是有相同的结果:
java.lang.IllegalStateException:Fragment没有视图
setupDialog
代码:
@Override
public void setupDialog(Dialog dialog, int style) {
Log.d(TAG, "setupDialog");
super.setupDialog(dialog, style);
View root = View.inflate(getContext(), R.layout.fragment_daily_detail, null);
dialog.setContentView(root);
CoordinatorLayout.LayoutParams layoutParams =
(CoordinatorLayout.LayoutParams) ((View) root.getParent()).getLayoutParams();
CoordinatorLayout.Behavior behavior = layoutParams.getBehavior();
if (behavior != null && behavior instanceof BottomSheetBehavior) {
bottomSheetBehavior = (BottomSheetBehavior) behavior;
bottomSheetBehavior.setBottomSheetCallback(mBottomSheetBehaviorCallback);
bottomSheetBehavior.setPeekHeight((int) getResources().getDimension(R.dimen.fragment_forgot_password_min_height));
Log.d(TAG, "State: " + bottomSheetBehavior.getState());
imageClose = root.findViewById(R.id.imageViewClose);
textViewTitle = (TextView) root.findViewById(R.id.textViewTitle);
peekLayout = root.findViewById(R.id.peekLayout);
tabLayout = (TabLayout) root.findViewById(R.id.tabs);
viewPager = (ViewPager) root.findViewById(R.id.viewPager);
recyclerView = (RecyclerView) root.findViewById(R.id.recyclerView);
timesheetDay = timesheetDayList.get(pageNumber);
imageClose.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
bottomSheetBehavior.setState(BottomSheetBehavior.STATE_HIDDEN);
}
});
textViewTitle.setText(timesheetDay.getDate());
sectionsPagerAdapter = new SectionsPagerAdapter(getChildFragmentManager());
viewPager.setAdapter(sectionsPagerAdapter);
tabLayout.setupWithViewPager(viewPager);
}
}
FragmentPagerAdapter
代码:
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
return PageFragment.getInstance(timesheetDayList.get(position));
}
@Override
public int getCount() {
return timesheetDayList.size();
}
@Override
public CharSequence getPageTitle(int position) {
return timesheetDayList.get(position).getDate();
}
}
LAYOUT 的代码:
<RelativeLayout 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/mainLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/background_material_light"
android:clickable="true"
android:orientation="vertical"
tools:context=".ui.dialogs.bottomsheets.ForgotUsernameFragment">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="0dp"
android:layout_marginTop="0dp">
<RelativeLayout
android:id="@+id/peekLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:id="@+id/linearLayout2"
android:layout_width="match_parent"
android:layout_height="?actionBarSize"
android:background="@color/colorPrimary"
android:gravity="center_vertical"
android:orientation="horizontal">
<ImageView
android:id="@+id/imageViewClose"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="?attr/selectableItemBackgroundBorderless"
android:clickable="true"
android:padding="16dp"
app:srcCompat="@drawable/ic_close_white_24dp"
tools:ignore="MissingPrefix"
tools:src="@drawable/ic_close_white_24dp" />
<TextView
android:id="@+id/textViewTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Daily Detail"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="@color/colorWhite" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/linearLayout2"
android:orientation="vertical">
<android.support.design.widget.TabLayout
android:id="@+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/colorPrimary"
app:tabMode="scrollable" />
<android.support.v4.view.ViewPager
android:id="@+id/viewPager"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
</RelativeLayout>
</RelativeLayout>
如果有人知道这个实现的话,对我来说非常有用。
提前干杯谢谢!
答案 0 :(得分:10)
<强>已更新强>
我解决了在&#34; onCreateView()&#34;中膨胀视图的问题。无论如何,我在ViewPager中设置了一个RecyclerView,而RecyclerView垂直滚动非常不稳定,有时可以工作,有时也不行,所以我会以另一种方式尝试这个屏幕。
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
Log.d(TAG, "onCreateview");
View root = inflater.inflate(R.layout.fragment_daily_detail, container);
mImageClose = root.findViewById(R.id.imageViewClose);
mTextViewTitle = (TextView) root.findViewById(R.id.textViewTitle);
mPeekLayout = root.findViewById(R.id.peekLayout);
mTabLayout = (TabLayout) root.findViewById(R.id.tabs);
mViewPager = (ViewPager) root.findViewById(R.id.viewPager);
mImageClose.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
getDialog().dismiss();
}
});
mTextViewTitle.setText("Daily detail");
mSectionsPagerAdapter = new SectionsPagerAdapter(getChildFragmentManager());
mViewPager.setAdapter(mSectionsPagerAdapter);
mTabLayout.setupWithViewPager(mViewPager);
mViewPager.setCurrentItem(mPageNumber);
mPeekLayout.getViewTreeObserver().addOnGlobalLayoutListener(
new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
BottomSheetDialog dialog = (BottomSheetDialog) getDialog();
FrameLayout bottomSheet = (FrameLayout) dialog.findViewById(android.support.design.R.id.design_bottom_sheet);
mBottomSheetBehavior = BottomSheetBehavior.from(bottomSheet);
// gets called after layout has been done but before display
// so we can get the height then hide the view
int height = mPeekLayout.getHeight();
Log.d(TAG, "Height: " + height);
mBottomSheetBehavior.setPeekHeight(height);
mBottomSheetBehavior.setBottomSheetCallback(mBottomSheetBehaviorCallback);
}
});
return root;
}
答案 1 :(得分:1)
尝试更改您的代码,如下所示:
...
LayoutInflater inflater = getActivity().getLayoutInflater();
root = inflater.inflate(R.layout.fragment_daily_detail, null);
...
sectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
//Use getSupportFragmentManager() instead of getChildFragmentManager(),
...
答案 2 :(得分:0)
我想指出另一种方法来做到这一点:
当您希望 viewpager 在 BottomSheetDialogFragment 中包含片段时,而不是覆盖 onCreateDialog 或 setupDialog 只需覆盖 onStart。
override fun onStart() {
super.onStart()
bottomSheet =
dialog!!.findViewById(com.google.android.material.R.id.design_bottom_sheet) as ViewGroup // notice the R root package
bottomSheetBehavior = BottomSheetBehavior.from(bottomSheet)
// SETUP YOUR BEHAVIOR HERE AND ADD THE BOTTOMSHEETCALLBACK HERE
然后在 onCreateView 中扩充自己的布局
override fun onCreateView(inflater: LayoutInflater,container: ViewGroup?,savedInstanceState: Bundle?): View? {
val myview: View = inflater.inflate(R.layout.layout_bottom_sheet, container, false)
// SETUP THE VIEWPAGER AND THE TABLAYOUT HERE. ALSO THE FRAGMENT PAGER ADAPTER