滚动视图内的循环视图-如何滚动整个内容?

使用 android.support.v4.widget.NestedScrollView 然后在两个布局中 NestedScrollView

将包含静态和动态数据的LinearLayout放在NestedScrollView中,它会像一个符咒一样工作。

下面是您需要的代码:

<android.support.v4.widget.NestedScrollView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

<LinearLayout
    android:id="@+id/layoutStaticContent"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

   //Static content.
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="100dp">
       .
       .
    <LinearLayout>

     //Dynamic content(newsfeed)
     <android.support.v7.widget.RecyclerView
        android:id="@+id/recycler_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</LinearLayout>
</android.support.v4.widget.NestedScrollView>

我希望它有帮助!

解决这个问题的一种可能方法是,只使用带有静态内容的RecyclerView作为Recycleview的标题。

那么布局将简单为:

//Dynamic content(newsfeed)
     <android.support.v7.widget.RecyclerView
        android:id="@+id/recycler_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

将有一个list_item_header。静态内容的xml布局:

//Static content.
<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="100dp">
   .
   .
<LinearLayout>

您必须更改您的recyclerview适配器以包含:

private static final int TYPE_HEADER = 0;
private static final int TYPE_ITEM = 1;

@Override
public int getItemCount()
{
    int itemCount = super.getItemCount();
    if (mIsHeaderPresent)
    {
        itemCount += 1;
    }
    return itemCount;
}


@Override
public int getItemViewType(int position)
{
    if (mIsHeaderPresent && position == 0)
    {
        return TYPE_HEADER;
    }
    return TYPE_ITEM;
}

@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType)
{
    if (viewType == TYPE_HEADER)
    {
        View itemView = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.list_item_header, parent, false);
        ViewHolderHeader viewHolder = new ViewHolderHeader(itemView);
        return viewHolder;
    } else if (viewType == TYPE_ITEM)
    {
        return getItemViewHolder(parent);
    }

    throw new RuntimeException("there is no type that matches the type " + viewType + " + make sure your using types correctly");
}

@Override
public void onBindViewHolder(RecyclerView.ViewHolder passedViewHolder)
{
    if (mIsHeaderPresent && passedViewHolder instanceof ViewHolderHeader)
    {
        onBindHeaderViewHolder((ViewHolderHeader) passedViewHolder);
    } else
    {
        onBindItemViewHolder(passedViewHolder);
    }
}

如果你想滚动所有数据,我想你必须使用CoordinatorLayout。在CoordinatorLayout中,您可以使用appbar布局和CollapsingToolbarLayout来放置静态内容。因为在android中,将可滚动容器用于另一个可滚动容器是错误的做法。您可以像这样使用坐标布局。

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
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" 
android:fitsSystemWindows="true"
>
<android.support.design.widget.AppBarLayout
    android:id="@+id/app_bar_layout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/collapsing_toolbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:contentScrim="?attr/colorPrimary"
        android:fitsSystemWindows="true"
        app:expandedTitleMarginStart="48dp"
        app:expandedTitleMarginEnd="64dp"
        app:layout_scrollFlags="scroll|exitUntilCollapsed">

    //Static content.
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="100dp">
       .
       .
    <LinearLayout>

</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>

  <android.support.v7.widget.RecyclerView
        android:id="@+id/recycler_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
  />
</android.support.design.widget.CoordinatorLayout>

经过大量的搜索和尝试,我找到了解决方案:

1.设置ScrollView内的RecyclerView的高度:

    <ScrollView
       android:id="@+id/scrollView"
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:fillViewport="true">
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
    ...
    <android.support.v7.widget.RecyclerView
            android:id="@+id/myPostsRecyclerView"
            android:layout_width="match_parent"
            **android:layout_height="550dp"**
            android:layout_below="@+id/textView7"
            android:background="@drawable/background"
            android:padding="5dp"
            **android:visibility="gone"**
            tools:listitem="@layout/item_send" />
    </RelativeLayout>
    </ScrollView>

2.在设置数据列表的适配器中:

public void setData(List<Post> posts) {
    this.posts.clear();
    this.posts.addAll(posts);
    notifyDataSetChanged();
    if (posts.size() < 1)
        activity.recyclerView.setVisibility(View.GONE);
    else {
        activity.recyclerView.setVisibility(View.VISIBLE);
        ViewGroup.LayoutParams params=activity.recyclerView.getLayoutParams();
        params.height=ViewGroup.LayoutParams.WRAP_CONTENT;
        activity.recyclerView.setLayoutParams(params);
    }

 }