Question

在横向模式下显示底部工作表对话框时出现错误行为。问题出现在24. +版本的设计库中。根据下图，底片仅在横向上无法正确显示。我正在使用BottomSheetDialog类，我正在学习本教程：http://www.skholingua.com/blog/bottom-sheet-android，在我发布的应用程序中也会出现问题。

我测试了25. +版本，问题没有解决。

错误在横向24,25 +库

中

23. + Library中的相同示例

主要活动

public class MainActivity extends AppCompatActivity {
CoordinatorLayout coordinatorLayout;
private BottomSheetBehavior<View> mBottomSheetBehavior;
private TextView textView;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    coordinatorLayout = (CoordinatorLayout) findViewById(R.id.main_content);
    textView = (TextView) findViewById(R.id.textView);
    View bottomSheet = coordinatorLayout.findViewById(R.id.bottom_sheet);

    //For your bottom sheet to be displayable, you need to create a BottomSheetBehavior.
    //This is created by getting a reference to the container view and calling BottomSheetBehavior.from() on that container.
    mBottomSheetBehavior = BottomSheetBehavior.from(bottomSheet);

    mBottomSheetBehavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
        @Override
        public void onStateChanged(@NonNull View bottomSheet, int newState) {
            switch (newState) {
                case BottomSheetBehavior.STATE_DRAGGING:
                    break;
                case BottomSheetBehavior.STATE_COLLAPSED:
                    mBottomSheetBehavior.setPeekHeight(0);
                    break;
                case BottomSheetBehavior.STATE_EXPANDED:
                    break;
                case BottomSheetBehavior.STATE_HIDDEN:
                    break;
                case BottomSheetBehavior.STATE_SETTLING:
                    break;
            }
        }

        @Override
        public void onSlide(@NonNull View bottomSheet, float slideOffset) {
        }
    });

}


public void onClick(View v) {
    switch (v.getId()) {
        case R.id.button1:
            /**
             * For persistent bottom sheet to work, your layout should contain a coordinator layout,
             * and then in any child view of your coordinator layout, you can make it as a persistent bottom sheet
             * by adding a custom property app:layout_behavior and use behavior_peekHeight to define how much
             * of the Bottom Sheet you want visible.
             */
            textView.setText(R.string.dynamic_persistent_txt);
            mBottomSheetBehavior.setPeekHeight(300);
            mBottomSheetBehavior.setState(BottomSheetBehavior.STATE_EXPANDED);
            break;
        case R.id.button2:
            /**
             * You can also display a Dialog in place of a View in the bottom sheet.
             * To do this, get the view from getLayoutInflater and pass it setContentView of the Dialog.
             */
            View view = getLayoutInflater().inflate(R.layout.bottom_sheet_layout, null);
            TextView textView = (TextView) view.findViewById(R.id.textView);
            textView.setText(R.string.dialog_modal_txt);
            BottomSheetDialog dialog = new BottomSheetDialog(this);
            dialog.setContentView(view);
            dialog.show();
            break;
        case R.id.button3:
            /**
             * You can also display a Fragment in place of a View in the bottom sheet.
             * To do this, you class that extends BottomSheetDialogFragment.
             */
            BottomSheetDialogFragment bottomSheetDialogFragment = new BottomSheetDialogFragmentExample();
            bottomSheetDialogFragment.show(getSupportFragmentManager(), bottomSheetDialogFragment.getTag());
            break;
    }
}

activity_main.xml中

<android.support.design.widget.CoordinatorLayout     xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:paddingTop="24dp"
    app:layout_behavior="@string/appbar_scrolling_view_behavior">

    <Button
        android:id="@+id/button1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="onClick"
        android:text="Dynamic BottomSheet" />

    <Button
        android:id="@+id/button2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="onClick"
        android:text="BottomSheetDialog" />

    <Button
        android:id="@+id/button3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="onClick"
        android:text="BottomSheetDialogFragment" />
</LinearLayout>

<LinearLayout
    android:id="@+id/bottom_sheet"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:elevation="4dp"
    android:minHeight="120dp"
    android:orientation="vertical"
    android:padding="@dimen/activity_vertical_margin"
    app:behavior_peekHeight="120dp"
    app:layout_behavior="android.support.design.widget.BottomSheetBehavior">

    <include layout="@layout/bottom_sheet_layout" />

</LinearLayout>

</android.support.design.widget.CoordinatorLayout>

bottom_sheet_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/CreamyGreen"
android:orientation="vertical">


<TextView
    android:id="@+id/textView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/static_persistent_txt"
    android:padding="16dp"
    android:textAppearance="?android:attr/textAppearanceMedium"
    android:textColor="@android:color/white" />

<TextView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="16dp"
    android:text="@string/ipsum"
    android:textColor="@android:color/white"
    android:textSize="16sp" />
</LinearLayout>

Answer 1

这是一个解决方法。（注意：此代码在活动中）

View sheetView;//class level variable

private void setUpBottomSheetDialog() {

    bottomSheetDialog = new BottomSheetDialog(this);

    LayoutInflater inflater = LayoutInflater.from(this);
     sheetView = inflater.inflate(R.layout.bottom_sheet_image_source, (ViewGroup) this.getWindow().getDecorView().getRootView(), false);

    bottomSheetDialog.setContentView(sheetView);

    BottomSheetBehavior mBehavior = BottomSheetBehavior.from((View) sheetView.getParent());

    bottomSheetDialog.setOnShowListener(dialogInterface -> {
        mBehavior.setPeekHeight(sheetView.getHeight());//get the height dynamically
    });
}

Answer 2

谷歌家伙关闭了这个按预期工作，这是一个解决方法

屏幕高度比有一个神奇的常数，它似乎做了min（actualwidth，themewidth），这显然不能正常工作与电话风景，因此覆盖更大的东西

<style name="Theme.Main.Reader">
     ...
     <item name="bottomSheetDialogTheme">@style/ReaderBottomSheelDialog</item>
</style>
<style name="ReaderBottomSheelDialog" parent="Theme.Design.BottomSheetDialog">
     <item name="bottomSheetStyle">@style/BottomSheetStyle</item>
</style>

<style name="BottomSheetStyle" parent="Widget.Design.BottomSheet.Modal">
    <item name="behavior_peekHeight">512dp</item>
</style>

Answer 3

要让BottomSheetDialogFragment始终完全展开（也在横向模式下），我会执行以下操作。

在onCreateDialog中，您可以创建BottomSheetDialog和视图。将此视图添加到BottomSheetDialog后，您可以使用BottomSheetBehavior.from（）中视图的父级获取BottomSheetBehavior。

然后在BottomSheetDialogFragment的onStart中，使用STATE_EXPANDED调用BottomSheetBehavior.setState。

BottomSheetBehavior mBottomBehavior;

public Dialog onCreateDialog(Bundle savedInstanceState) {
    BottomSheetDialog dialog = new BottomSheetDialog(getContext());
    mBinding = SomeBinding.inflate(LayoutInflater.from(getContext()));
    dialog.setContentView(mBinding.getRoot());
    mBottomBehavior = BottomSheetBehavior.from((View) mBinding.getRoot().getParent());
    return dialog;
}

public void onStart() {
    super.onStart();
    mBottomBehavior.setState(BottomSheetBehavior.STATE_EXPANDED);
}

我希望这有助于某人。

Answer 4

BottomSheetDialog对话框； BottomSheetBehavior bottomSheetBehavior;

private void createBottomSheet() {
    if (dialog == null){
        dialog = new BottomSheetDialog(this);

        final View view = LayoutInflater.from(this).inflate(R.layout.setting_dialog,
                (ViewGroup)this.getWindow().getDecorView().getRootView(),false);

        dialog.setContentView(view);
        bottomSheetBehavior = BottomSheetBehavior.from((View)view.getParent());
        dialog.setOnShowListener(new DialogInterface.OnShowListener() {
            @Override
            public void onShow(DialogInterface dialog) {
                bottomSheetBehavior.setPeekHeight(view.getHeight());
            }
        });
    }
}

Answer 5

我个人解决此问题的选择是，在 onCreateView 之后，您已经具有 BottomSheetDialogFragment

的主视图。

onStart 将在创建视图后执行，因此您可以播放以下行为：

@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    mainLayout = inflater.inflate(R.layout.fragment_auction_bottom_sheet_dialog, container, false);
    return mainLayout;
}

然后，您将始终展开底表

Answer 6

在androidX中，底页可以扩展如下：

 BottomSheetDialog bottomSheetDialog = 
       new BottomSheetDialog(requireContext());

  bottomSheetDialog.setContentView(view);

    bottomSheetDialog.show();

    FrameLayout bottomSheet = (FrameLayout)
            bottomSheetDialog.findViewById(com.google.android.material.R.id.design_bottom_sheeet);
    BottomSheetBehavior behavior = BottomSheetBehavior.from(bottomSheet);
    behavior.setState(BottomSheetBehavior.STATE_EXPANDED);
    behavior.setPeekHeight(0);

在出现以下错误的情况下，这也将有所帮助，同时又可以改善底层的行为： “视图不是coordinatorlayout的子对象”

Answer 7

这可以通过2行代码（科特林版）来实现

class MyBottomSheetFragment : BottomSheetDialogFragment() {
    //....
    override fun onStart() {
        super.onStart()
        //this forces the sheet to appear at max height even on landscape
        val behavior = BottomSheetBehavior.from(requireView().parent as View)
        behavior.state = BottomSheetBehavior.STATE_EXPANDED
    }
}

Answer 8

将此函数添加到扩展BottomSheetDialogFragment 的类的实现中将执行必要的操作：

@Override
public void onStart() {
    super.onStart();
    BottomSheetBehavior.from((View) requireView().getParent()).setState(BottomSheetBehavior.STATE_EXPANDED);
    //  Opens the bottom sheet in expanded state even in landscape mode
    BottomSheetBehavior.from((View) requireView().getParent()).setSkipCollapsed(true);
    //  Skips the peek view of the bottom sheet
}

底板景观问题

8 个答案: