Understanding BottomSheet Collapsed vs Hidden Behavior

Question

I have a bottom sheet with its height and width set to match_parent . Therefore, when I press the button, I set the behavior to STATE_EXPANDED as follows:

 mBottomSheetBehavior.setState(BottomSheetBehavior.STATE_EXPANDED); 

My Bottomsheet is defined below:

  <FrameLayout android:id="@+id/bottom_sheet" android:layout_width="match_parent" android:layout_height="match_parent" android:clickable="true" android:elevation="@dimen/design_appbar_elevation" app:behavior_hideable="true" app:layout_behavior="@string/bottom_sheet_behavior"> <include android:id="@+id/bottom_sheet_content" layout="@layout/bottomsheet_layout" /> </FrameLayout> 

I am tracking state with BottomSheet callbacks.

• I press a button and the bottom sheet expands to full screen.
• Current status is STATE_EXPANDED
• I quickly scroll through the bottom sheet. (Do not completely drag until it is closed, just swipe down like a scroll).
• It stops in the middle and its state is written as STATE_COLLAPSED
• If I spent it again, everything disappeared, and its state is STATE_HIDDEN

I do not understand why he stops in the middle. How can I hide it with one click.

I tried this by setting peek_height to 0dp . Thus, he never encounters STATE_HIDDEN . When hidden, its state becomes STATE_COLLAPSED . I just do not understand these conditions.

How to reach STATE_HIDDEN one hit down?

Answer 1

Late, but I just stumbled upon this, looking for something like that.

Here's how you can skip the minimized state:

In XML, by adding app:behavior_skipCollapsed="true" to the BottomSheet view.

OR

Programmatically with setSkipCollapsed (boolean) .