如何将 RecyclerView 放在 NestedScrollView 中? [英] How to put RecyclerView inside NestedScrollView?

问题描述

通过创建

<小时>

With creation of NestedScrollView you can put scrolling view inside another scrolling view as long as those implement NestedScrollingChild and NestedScrollingParent correctly.

(This is not bad design pattern "Ian Lake (from Google) actually recommends putting a RecyclerView inside a nestedscrollview here: plus.google.com/u/0/+AndroidDevelopers/posts/9kZ3SsXdT2T")

I want to put RecyclerView inside NestedScrollView and fortunately RecyclerView implements NestedScrollingChild so you can put it inside NestedScrollView.

public class RecyclerView extends ViewGroup implements ScrollingView, NestedScrollingChild

I have read these posts:

How to use RecyclerView inside NestedScrollView?

NestedScrolling with NestedScrollView, RecyclerView (Horizontal), inside a CoordinatorLayout

But the problem with most voted solution is, it calls all of the items of RecyclerView so for example if it is an endless RecyclerView and when the user reaches the end of the list you want to make a network request then with that solution the RecyclerView calls server repeatedly because it automatically reaches the last item of RecyclerView.

Anyway, how to set parameter so I can put RecyclerView inside NestedScrollView.(actually I want to put a viewgroup like framelayout or relativelayout as a single childe of nestedscrollview and then I want to put recyclerview inside framelayout or relativelayout)

When I put RecyclerView inside NestedScrollView there is nothing to display.

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In order to create a sample project you can use cheesesquare and change the CheeseDetailActivity to have a RecyclerView.

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Although the answer of BNK is not correct but BNK has tried a lot. So I award him the bounty. Still looking for nice solution....

解决方案

The following is my new updated answer:

<android.support.v4.widget.NestedScrollView
        android:id="@+id/scrollview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fillViewport="true"
        app:layout_behavior="@string/appbar_scrolling_view_behavior">

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <android.support.v7.widget.CardView
                android:id="@+id/cardview1"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_margin="@dimen/card_margin">

                <LinearLayout
                    style="@style/Widget.CardContent"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content">

                    <TextView
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:text="Info CardView1"
                        android:textAppearance="@style/TextAppearance.AppCompat.Title" />

                    <TextView
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:text="@string/cheese_ipsum" />

                </LinearLayout>

            </android.support.v7.widget.CardView>

            <android.support.v7.widget.CardView
                android:id="@+id/cardview2"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_below="@+id/cardview1"
                android:layout_margin="@dimen/card_margin">

                <LinearLayout
                    style="@style/Widget.CardContent"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content">

                    <TextView
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:text="Info CardView2"
                        android:textAppearance="@style/TextAppearance.AppCompat.Title" />

                    <TextView
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:text="@string/cheese_ipsum" />

                </LinearLayout>

            </android.support.v7.widget.CardView>

            <android.support.v7.widget.RecyclerView
                android:id="@+id/recyclerview"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_below="@+id/cardview2"
                android:clipToPadding="false"
                android:paddingTop="0dp"/>

        </RelativeLayout>

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

In Activity:

        RecyclerViewAdapter recyclerViewAdapter = new RecyclerViewAdapter(true); // true: with header
        RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerview);            
        final MyLinearLayoutManager layoutManager = new MyLinearLayoutManager(this, LinearLayoutManager.VERTICAL, false, getScreenHeight(this));
        // final CustomLinearLayoutManager layoutManager = new CustomLinearLayoutManager(this, LinearLayoutManager.VERTICAL, false);
        recyclerView.setLayoutManager(layoutManager);
        recyclerView.setAdapter(recyclerViewAdapter);  
        // recyclerView.setNestedScrollingEnabled(false); // Disables scrolling for RecyclerView, however, CustomLinearLayoutManager used instead of MyLinearLayoutManager

I have also updated to My GitHub's sample project

Screenshot:

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