你好，我有一个SwipeRe新布局，其中包含一个相对布局，其中包含一个滚动视图和另一个视图，目前当我向下滚动列表时，有时不会向上滚动，相反，它运行onRe新函数。我如何防止它运行这个，除非视图在顶部？我读过关于canChildScrollUp的文章，但没有找到正确实现它的方法。
这是我的布局
<?xml version="1.0" encoding="utf-8"?>
<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"
>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="none">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/profile"
android:background="@drawable/homepage_image_1">
<com.alldaypa.alldaypa.customviews.CircularImageView
android:layout_width="75dp"
android:layout_height="75dp"
app:border_color="#FFFFFF"
app:border_width="8dp"
app:shadow="false"
android:id="@+id/profile_image"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_marginLeft="70dp"
android:layout_marginTop="20dp"
android:src="@drawable/homepage_noimage_male"
android:clickable="true" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/profile_image"
android:layout_alignRight="@+id/profile_image"
android:src="@drawable/homepage_profile_add"
android:layout_marginRight="3dp"
android:layout_marginBottom="3dp"
/>
<TextView android:id="@+id/profile_name"
android:text="Name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20sp"
android:layout_alignTop="@+id/profile_image"
android:layout_toRightOf="@+id/profile_image"
android:layout_marginTop="20dp"
android:textColor="@color/darkgrey"
android:layout_marginLeft="10dp"/>
<TextView android:id="@+id/company"
android:text="Company"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="16sp"
android:layout_below="@+id/profile_name"
android:layout_alignLeft="@+id/profile_name"
android:textColor="@color/darkgrey"
android:layout_marginTop="-2dp"/>
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/availability"
android:background="@color/white"
android:padding="20dp"
android:layout_below="@+id/profile">
<TextView android:id="@+id/profile_status_title"
android:text="Your current availability status:"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="14sp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:textColor="@color/darkgrey"/>
<TextView android:id="@+id/profile_status"
android:text="Available"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="32sp"
android:layout_below="@+id/profile_status_title"
android:layout_centerHorizontal="true"
android:textColor="@color/green"
android:layout_marginTop="-2dp"/>
<TextView android:id="@+id/profile_status_reason"
android:text="On: 01924 501370"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="24sp"
android:layout_below="@+id/profile_status"
android:layout_centerHorizontal="true"
android:textColor="@color/pink"/>
</RelativeLayout>
<TextView
android:id="@+id/messages"
android:layout_width="match_parent"
android:layout_height="30dp"
android:layout_alignParentRight="true"
android:layout_below="@+id/availability"
android:ellipsize="end"
android:lines="1"
android:background="@color/pink"
android:textColor="@color/white"
android:textSize="14sp"
android:paddingLeft="10dp"
android:paddingTop="5dp"
android:gravity="left"
android:text="Messages" />
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_below="@+id/messages"
android:background="@color/midgrey">
<com.alldaypa.alldaypa.customviews.SwipeListView
xmlns:swipe="http://schemas.android.com/apk/res-auto"
android:id="@+id/list"
android:listSelector="#00000000"
android:layout_width="fill_parent"
android:layout_height="400dp"
swipe:swipeFrontView="@+id/front"
swipe:swipeBackView="@+id/back"
swipe:swipeActionLeft="reveal"
swipe:swipeMode="left"
swipe:swipeCloseAllItemsWhenMoveList="true"
swipe:swipeOpenOnLongPress="false"
swipe:swipeAnimationTime="0"
swipe:swipeOffsetLeft="200dp"
swipe:swipeOffsetRight="0dp"
android:focusable="false"
/>
<ImageView android:layout_height="1dp"
android:layout_width="match_parent"
android:background="@color/searchbg"
android:layout_below="@+id/list"
android:layout_alignLeft="@+id/list"
android:id="@+id/line"
/>
<Button
android:layout_width="match_parent"
android:layout_height="60dp"
android:background="@drawable/listitem"
android:textColor="@color/darkgrey"
android:textSize="18sp"
android:text="View all messages"
android:layout_below="@+id/line"
android:gravity="center"
android:layout_centerVertical="true"
android:id="@+id/viewall"
android:layout_centerHorizontal="true"
/>
</RelativeLayout>
</RelativeLayout>
</ScrollView>
<include layout="@layout/elv_undo_popup" android:id="@+id/undo" android:visibility="gone"/>
</RelativeLayout>
</android.support.v4.widget.SwipeRefreshLayout>
这就是我实现我的课程的地方
swipeLayout = (SwipeRefreshLayout)v.findViewById(R.id.swipe_container);
swipeLayout.setColorSchemeColors(Color.parseColor("#ed037c"), Color.parseColor("#c40053"),Color.parseColor("#ffffff"), Color.parseColor("#51af50"));
swipeLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@Override public void onRefresh() {
swipeLayout.setRefreshing(true);
Log.d("Swipe", "Refreshing Number");
( new Handler()).postDelayed(new Runnable() {
@Override public void run() {
updateLocalData();
}
}, 3000);
}
});
多亏了@Twibit，我找到了一种方法来实现这一目标。技巧是如果位置为0，则检测滚动视图的位置，并将SwipeRefreshLayout设置为启用或禁用。
scrollView.getViewTreeObserver().addOnScrollChangedListener(new OnScrollChangedListener() {
@Override
public void onScrollChanged() {
int scrollY = scrollView.getScrollY();
if(scrollY == 0) swipeLayout.setEnabled(true);
else swipeLayout.setEnabled(false);
}
});
如果您的滚动视图位于或不位于顶部，您可能需要启用/禁用滑动布局。
您可以查看此链接以获得灵感：https://gist.github.com/Frikish/10025057
另一个可能对你有帮助的例子:https://developer . Android . com/samples/swiperefreshmmultipleviews/src/com . example . Android . swiperefreshmmultipleviews/multiswiperefreshlayout . html
我有一个水平滚动的另一个问题： HorizontalScrollView内SwipeRe新布局
>
扩展 SwipeRefreshLayout 并覆盖方法canChildScrollUp（），该方法确定视图是否可以向上滚动。
//if you have several scrollable views,just iterate
for (View view : ...) {
if (view != null && view.isShown() && !canViewScrollUp(view)) {
// If the view is shown, and can not scroll upwards, return false and start the
// gesture.
return false;
}
return true;
遍历视图，使用方法< code>canViewScrollUp()检查是否有任何视图不能向上滚动
private static boolean canViewScrollUp(View view) {
if (android.os.Build.VERSION.SDK_INT >= 14) {
// For ICS and above we can call canScrollVertically() to determine this
return ViewCompat.canScrollVertically(view, -1);
} else {
if (view instanceof AbsListView) {
// Pre-ICS we need to manually check the first visible item and the child view's top
// value
final AbsListView listView = (AbsListView) view;
return listView.getChildCount() > 0 &&
(listView.getFirstVisiblePosition() > 0
|| listView.getChildAt(0).getTop() < listView.getPaddingTop());
} else {
// For all other view types we just check the getScrollY() value
return view.getScrollY() > 0;
}
}
