<RelativeLayout 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="match_parent">
<!--<include-->
<!--android:id="@+id/app_bar"-->
<!--layout="@layout/app_bar" />-->
<android.support.design.widget.CoordinatorLayout
android:id="@+id/rootLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/app_bar">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="256dp">
<android.support.design.widget.CollapsingToolbarLayout
android:id="@+id/collapsingToolbarLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:contentScrim="?attr/colorPrimary"
app:expandedTitleMarginStart="64dp"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:src="@drawable/header"
app:layout_collapseMode="parallax"
app:layout_collapseParallaxMultiplier="0.7" />
<android.support.v7.widget.Toolbar
android:id="@+id/toolbarTutorial"
android:layout_width="match_parent"
android:layout_height="50dp"
android:minHeight="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar" />
<TextView
android:id="@+id/textViewAppBar"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_gravity="bottom"
android:gravity="center"
android:scrollbarDefaultDelayBeforeFade="@id/toolbarTutorial"
android:text="test"
android:textColor="@color/white"
android:textSize="30sp" />
</android.support.design.widget.CollapsingToolbarLayout>
<!--<android.support.design.widget.TabLayout-->
<!--android:id="@+id/tabLayout"-->
<!--android:layout_width="match_parent"-->
<!--android:layout_height="wrap_content"-->
<!--app:layout_scrollFlags="scroll|enterAlways"/>-->
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/swipe_container"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<!--<android.support.v4.widget.SwipeRefreshLayout-->
<!--android:id="@+id/activity_main_swipe_refresh_layout"-->
<!--android:layout_width="match_parent"-->
<!--android:layout_height="wrap_content">-->
<LinearLayout
android:id="@+id/linearLayoutWithData"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
app:layout_behavior="@string/appbar_scrolling_view_behavior"> …Run Code Online (Sandbox Code Playgroud) 我正在使用 NestedScrollView,我想检查 NestedScrollView 是在底部还是顶部 :-)
有什么建议?谢谢!
我需要传递一个协程函数作为另一个函数的参数。例如:
private fun handleIt(here: Long, call: (hereId: Long) -> Unit) {
call(here)
}
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然后从协程范围:
GlobalScope.launch {
handleIt(3) { viewModel.doThings(hereId) }
}
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viewModel 函数如下所示:
suspend fun doThings(hereId: Long) {
withContext(coroutineContextProvider.io) {
doSomething(hereId)
}
}
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但现在,我收到错误:“只能在协程体内调用暂停函数。有什么建议吗?