Fix scroll issue on bottom dialogs and add drag handle to UI

[Luna712]

Technically, the only fix necessary was setting isNestedScrollingEnabled = true on the ListView in order to make it properly scrollable and not dismiss when scrolling. But this also cleans up the layout and adds a drag handler view to make it more visibly explicit.

Fixes #349
Fixes #2128
Fixes #2210

[fire-light42]

isNestedScrollingEnabled? Are you sure this will not devastate performance?

[Luna712]

isNestedScrollingEnabled? Are you sure this will not devastate performance?

@fire-light42

Doesn't seem to when testing anyway.

[Luna712]

I think I have a better fix though

[fire-light42]

I checked, and "isNestedScrollingEnabled" does not cause the issue I was worried about.

[Luna712]

I checked, and "isNestedScrollingEnabled" does not cause the issue I was worried about.

This method only partially works also though I have another PR I could also do separately if you want that improves both UX and UI further then this does.

[Luna712]

I will just commit to this PR and can revert if you'd rather the other method.

[fire-light42]

I checked, and "isNestedScrollingEnabled" does not cause the issue I was worried about.

This method only partially works also though I have another PR I could also do separately if you want that improves both UX and UI further then this does.

Nice, I recommend using our baseadapter/nostateadapter, as listview does not recycle views ect.

[Luna712]

I checked, and "isNestedScrollingEnabled" does not cause the issue I was worried about.

This method only partially works also though I have another PR I could also do separately if you want that improves both UX and UI further then this does.

Nice, I recommend using our baseadapter/nostateadapter, as listview does not recycle views ect.

This could still use more improvement then I did now but since it doesn't use that adapter at a yet I didn't do it here, we could probably make this whole ListView some RecyclerView but wanted to minimize the amount of changes in just this bug fix, but can change it more if you want also. I was also thinking we should create a BottomSheetDialogListView that handles this and use that instead of this setOnTouchListener but decided not to for now. Not sure exactly what you want to so though, but can change it if you want.