问题
I have a bottom sheet with a NestedScrollView inside (see below). When I press on a FAB button, I want to make some parts in this NestedScrollView invisible. But when I change some linearlayouts visibilities to GONE, bottomsheet fly aways from the top. See here:
You can get the whole code from https://github.com/Tanrikut/BottomSheetExample
My change visibility method:
private void changeVisibility() {
subtitleLayout.setVisibility(View.GONE);
coordinateLayout.setVisibility(View.GONE);
timeLayout.setVisibility(View.GONE);
}
My NestedScrollView xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.NestedScrollView 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:layout_width="match_parent"
android:layout_height="wrap_content"
app:behavior_peekHeight="120dp"
app:layout_behavior="android.support.design.widget.BottomSheetBehavior"
android:id="@+id/bottom_sheet_main">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="28dp"
android:background="@android:color/white"
android:animateLayoutChanges="true"
android:orientation="vertical"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingLeft="10dp"
android:paddingStart="10dp"
android:paddingTop="@dimen/activity_horizontal_margin">
<TextView
style="@style/TextAppearance.AppCompat.Headline"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Dandelion Chocolate"
android:id="@+id/title" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="@dimen/activity_horizontal_margin"
android:layout_marginTop="16dp"
android:orientation="horizontal"
android:id="@+id/subtitleLayout">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/subtitle"
android:text="Subtitle" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:padding="@dimen/activity_horizontal_margin"
android:id="@+id/coordinateLayout">
<ImageButton
android:layout_width="24dp"
android:layout_height="24dp"
android:alpha="0.36"
android:src="@drawable/ic_room_24dp"
android:background="@null" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="@dimen/activity_horizontal_margin"
android:layout_marginStart="@dimen/activity_horizontal_margin"
android:text="740, Valencia St, San Francisco, CA"
android:textColor="@android:color/primary_text_light"
android:id="@+id/bottom_sheet_coordinate" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:padding="@dimen/activity_horizontal_margin"
android:id="@+id/timeLayout">
<ImageButton
android:layout_width="24dp"
android:layout_height="24dp"
android:alpha="0.36"
android:src="@drawable/ic_query_builder_24dp"
android:background="@null" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="@dimen/activity_horizontal_margin"
android:layout_marginStart="@dimen/activity_horizontal_margin"
android:text="Wed, 10 AM - 9 PM"
android:textColor="@android:color/primary_text_light"
android:id="@+id/bottom_sheet_time" />
</LinearLayout>
</LinearLayout>
</FrameLayout>
</android.support.v4.widget.NestedScrollView>
回答1:
I ran into this, took a while to figure out what was the cause.
It's because you're using android:animateLayoutChanges, which surfaces a bug in either BottomSheetBehavior or CoordinatorLayout.
Remove it and the BottomSheet will stop animating on its own when it shouldn't. Not a fix, but a workaround at least.
--
Update:
Turns out that if you enable "animateLayoutChanges" programmatically by setting the LayoutTransition instance to use, you can set a flag on it that will prevent it from messing with views that are ancestors of the one you're using android:animateLayoutChanges on (aka: your BottomSheet container):
LayoutTransition transition = new LayoutTransition();
transition.setAnimateParentHierarchy(false);
yourLinearLayoutThatNeedsLayoutAnimation.setLayoutTransition(transition);
回答2:
Removing the follow line from my root layout solved this problem:
android:animateLayoutChanges="true"
回答3:
May be this can help you! I can't comment so posting it as an answer
Here
for slide layout something same as bottom sheet but good
回答4:
Try to make the parent of bottomSheet an independent CoordinatorLayout without having any other child Views. For example:
<RelativeLayout
android:id="@+id/some_id"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Some_View
.../>
<Some_Other_view>
.
.
.</Some_Other_view>
<androidx.coordinatorlayout.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true">
<include
android:id="@+id/included_layout"
layout="@layout/bottom_sheet" />
</androidx.coordinatorlayout.widget.CoordinatorLayout>
</RelativeLayout>
回答5:
The BottomSheetBehavior has its own behavior by which you can get respective results. The following are the behavior of the bottomsheet.
STATE_DRAGGING, STATE_SETTLING, STATE_EXPANDED, STATE_COLLAPSED, STATE_HIDDEN.
Don't use visibility of any layouts.
Use this behavior in your code like:
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
int behaviorState = bottomSheetBehavior.getState();
if (behaviorState == BottomSheetBehavior.STATE_EXPANDED) {
bottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
} else {
bottomSheetBehavior.setState(BottomSheetBehavior.STATE_EXPANDED);
}
}
});
来源：https://stackoverflow.com/questions/38327849/bottomsheet-fly-away-with-visibility-change