BottomSheetDialogFragment 在横向模式下不显示全高

Question

我在我的活动中使用 BottomSheetDialogFragment，对话框在纵向模式下显示全高，但在我切换到横向模式时不显示。

MainActivity.java

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        CustomBottomSheetDialog customBottomSheetDialog = new CustomBottomSheetDialog();
        customBottomSheetDialog.show(getSupportFragmentManager(),customBottomSheetDialog.getTag());
    }
}

CustomBottomSheetDialog

public class CustomBottomSheetDialog extends BottomSheetDialogFragment {

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        return View.inflate(getContext(), R.layout.view_config, null);
    }
}

CustomBottomSheetDialog 布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:orientation="vertical"
              android:layout_width="match_parent"
              android:background="#fdf107"
              android:layout_height="wrap_content">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="196dp"
        android:gravity="center"
        android:textColor="@color/colorAccent"
        android:text="BottomSheetDialogFragment"/>

</LinearLayout>

在横向模式下，我必须拖动 BottomSheetDialogFragment 才能看到全部内容。

Answer 1

这个问题的解决办法是。

@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    view.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
        @Override
        public void onGlobalLayout() {
            if (Build.VERSION.SDK_INT < 16) {
                view.getViewTreeObserver().removeGlobalOnLayoutListener(this);
            } else {
                view.getViewTreeObserver().removeOnGlobalLayoutListener(this);
            }
            BottomSheetDialog dialog = (BottomSheetDialog) getDialog();
            FrameLayout bottomSheet = (FrameLayout)
            dialog.findViewById(android.support.design.R.id.design_bottom_sheet);
            BottomSheetBehavior behavior = BottomSheetBehavior.from(bottomSheet);
            behavior.setState(BottomSheetBehavior.STATE_EXPANDED);
            behavior.setPeekHeight(0); // Remove this line to hide a dark background if you manually hide the dialog.
        }
    });
}

Answer 2

这对我有用，是最干净的方法：

override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
    val dialog = BottomSheetDialog(requireContext(), theme)
    dialog.behavior.state = BottomSheetBehavior.STATE_EXPANDED
    return dialog
}

Answer 3

感谢@avez raj 和Prevent dismissal of BottomSheetDialogFragment on touch outside 我写在onCreateDialog()。

override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
    val dialog = super.onCreateDialog(savedInstanceState)

    dialog.setOnShowListener {
        val bottomSheet = dialog.findViewById<View>(
            com.google.android.material.R.id.design_bottom_sheet) as? FrameLayout
        val behavior = BottomSheetBehavior.from(bottomSheet)
        behavior.state = BottomSheetBehavior.STATE_EXPANDED
    }

    return dialog
}

目前我使用MakinTosH解决方案，它更短。

Answer 4

ViewTreeObserver 解决方案对我不起作用，但我找到了一个更好的解决方案 here 并将其转换为 Kotlin。这个没有 ViewTreeObserver 带来的昂贵的计算浪费，并且很好地将功能捆绑到类中。

class ExpandedBottomSheetDialog(context: Context) : BottomSheetDialog(context) {

    override fun show() {
        super.show()
        // androidx should use: com.google.android.material.R.id.design_bottom_sheet
        val view = findViewById<View>(R.id.design_bottom_sheet)
        view!!.post {
            val behavior = BottomSheetBehavior.from(view)
            behavior.setState(BottomSheetBehavior.STATE_EXPANDED)
        }
    }
}

Answer 5

您可以简单地执行以下操作：

override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
    super.onViewCreated(view, savedInstanceState)
    dialog?.let {
        val sheet = it as BottomSheetDialog
        sheet.behavior.state = BottomSheetBehavior.STATE_EXPANDED
    }

    // rest of your stuff
}

Answer 6

这是gestureInsetBottomIgnored的问题。对于横向，此标志为 false，但对于纵向，此标志为 true。

Answer 7

任何原因添加`onConfigurationChanged后，它不起作用（需要再次横向拖动它）

// support when screen rotate, resize etc.
override fun onConfigurationChanged(newConfig: Configuration) {
    super.onConfigurationChanged(newConfig)
    rvLayoutManager.spanCount = getSpanCount()
    rvLayoutManager.requestLayout()
}

private fun getSpanCount(): Int {
    val widthPx = resources.displayMetrics.widthPixels
    val profileWidth = activity!!.resources.getDimension(R.dimen.profile_width)
    return Math.floor((widthPx / profileWidth).toDouble()).toInt()
}