我有一个FrameLayout(teaserContainer)和BottomSheet(invitesContainer)。 FrameLayout在BottomSheet的上方(和上方)。我希望FrameLayout缩小并跟随BottomSheet,所以FremeLayout随着BottomSheet的展开而折叠。
现在发生的是,由于android:layout_height="match_parent"
导致FrameLayout占据了整个页面,但是如果我将其设置为android:layout_height="wrap_content"
,它将显示在BottomSheet的后面,并且像FAB一样垂直居中。
我希望当BottomSheet(invitesContainer)完全展开时,FrameLayout(teaserContainer)应该占据屏幕的其余部分,直到工具栏。
将视图锚定到BottomSheet的所有示例都涉及FAB,因此这里对我没有任何帮助。
<android.support.design.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".social.friends.FriendsListFragment">
<FrameLayout
android:id="@+id/teaserContainer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/white"
android:fitsSystemWindows="true"
android:gravity="center"
android:orientation="vertical"
android:visibility="gone"
app:layout_anchor="@+id/invitesContainer"
app:layout_anchorGravity="top">
<com.myapp.android.common.social.friends.views.FriendsTeaser
android:id="@+id/teaser"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
app:friendsTeaserState="EMPTY" />
</FrameLayout>
<LinearLayout
android:id="@+id/invitesContainer"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/white"
android:clickable="true"
android:focusable="true"
android:orientation="vertical"
app:behavior_hideable="true"
app:behavior_peekHeight="0dp"
app:layout_behavior="android.support.design.widget.BottomSheetBehavior">
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:alpha="0.1"
android:background="@color/body" />
<com.myapp.android.common.social.friends.views.FriendsConnectItem
android:id="@+id/connectFacebook"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:friendsConnectType="facebook" />
<com.myapp.android.common.social.friends.views.FriendsConnectItem
android:id="@+id/connectContacts"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:friendsConnectType="contacts" />
<com.myapp.android.common.social.friends.views.FriendsConnectItem
android:id="@+id/share"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:friendsConnectType="invite" />
</LinearLayout>
</android.support.design.widget.CoordinatorLayout>
-------------------------------------------- -------------------------------------------------- ----------------
解决方案: 这是瓦迪姆建议的科特林版本
BottomSheetBehavior.from(invitesContainer).setBottomSheetCallback(object :
BottomSheetBehavior.BottomSheetCallback() {
override fun onStateChanged(bottomSheet: View, newState: Int) {
}
override fun onSlide(bottomSheet: View, slideOffset: Float) {
val currentHeight = teaserContainer.height - bottomSheet.height
val bottomSheetShiftDown = currentHeight - bottomSheet.top
teaserContainer.setPadding(
0,
0,
0,
(bottomSheet.height + bottomSheetShiftDown)
)
}
})
答案 0 :(得分:3)
我的例子是:
public void onSlide(@NonNull View bottomSheet, float slideOffset) {
int currentHeight = teaserContainer.getHeight() - bottomSheet.getHeight();
int bottomSheetShiftDown = currentHeight - bottomSheet.getTop();
rootContainer.setPadding(
0,
0,
0,
(mBottomSheet.getPeekHeight() + bottomSheetShiftDown));
}
和mBottomSheet - BottomSheetBehavior mBottomSheet = BottomSheetBehavior.from(invitesContainer);
因此,当您拉下它时,它将添加/删除您的teaserContainer的填充。