321

我正在尝试在同一布局中实现包含 RecyclerView 和 ScrollView 的布局。

布局模板:

<RelativeLayout>
    <ScrollView android:id="@+id/myScrollView">
       <unrelated data>...</unrealated data>

           <android.support.v7.widget.RecyclerView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:id="@+id/my_recycler_view"
            />
    </ScrollView>


</RelativeLayout>

问题:我可以滚动到最后一个元素ScrollView

我尝试过的事情:

  1. 卡片视图里面ScrollView(现在ScrollView包含RecyclerView) - 可以看到卡片直到RecyclerView
  2. 最初的想法是viewGroup使用RecyclerView而不是ScrollView其中一个视图类型来实现这个,CardView但我得到的结果与ScrollView
4

26 回答 26

770

使用NestedScrollView而不是ScrollView

请通过NestedScrollView 参考文档了解更多信息。

并添加recyclerView.setNestedScrollingEnabled(false);到您的RecyclerView

于 2016-05-20T05:42:11.593 回答
112

我知道我迟到了,但即使谷歌修复了问题,问题仍然存在android.support.v7.widget.RecyclerView

我现在遇到的问题是RecyclerView没有考虑到在 Marshmallow 和 Nougat+(API 23、24、25)版本上发生layout_height=wrap_content的所有项目问题。(更新:替换所有版本作品。我不知何故错过了测试接受的解决方案。在我的 github 项目中添加了这个作为演示。)ScrollView
ScrollViewandroid.support.v4.widget.NestedScrollView

在尝试了不同的事情之后,我找到了解决此问题的解决方法。

简而言之,这是我的布局结构:

<ScrollView>
  <LinearLayout> (vertical - this is the only child of scrollview)
     <SomeViews>
     <RecyclerView> (layout_height=wrap_content)
     <SomeOtherViews>

解决方法是包装RecyclerViewwith RelativeLayout。不要问我是怎么找到这个解决方法的!!!¯\_(ツ)_/¯

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

    <android.support.v7.widget.RecyclerView
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</RelativeLayout>

GitHub项目上提供了完整示例- https://github.com/amardeshbd/android-recycler-view-wrap-content

这是一个演示截屏视频,显示了正在执行的修复:

截屏

于 2016-08-17T11:29:19.007 回答
57

虽然建议

你不应该把一个可滚动的视图放在另一个可滚动的视图中

是一个合理的建议,但是如果您在回收站视图上设置固定高度,它应该可以正常工作。

如果您知道适配器项目布局的高度,您可以计算 RecyclerView 的高度。

int viewHeight = adapterItemSize * adapterData.size();
recyclerView.getLayoutParams().height = viewHeight;
于 2015-02-13T11:08:03.300 回答
34

如果为 RecyclerView 设置固定高度对某人(如我)不起作用,这是我添加到固定高度解决方案中的内容:

mRecyclerView.addOnItemTouchListener(new RecyclerView.OnItemTouchListener() {
    @Override
    public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
        int action = e.getAction();
        switch (action) {
            case MotionEvent.ACTION_MOVE:
                rv.getParent().requestDisallowInterceptTouchEvent(true);
                break;
        }
        return false;
    }

    @Override
    public void onTouchEvent(RecyclerView rv, MotionEvent e) {

    }

    @Override
    public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {

    }
});
于 2015-04-24T09:02:35.870 回答
27

新的Android 支持库 23.2解决了这个问题,您现在可以将wrap_content设置为您的高度RecyclerView并正常工作。

Android 支持库 23.2

于 2016-02-25T12:04:00.270 回答
18

RecyclerViews 可以放入 ScrollViews,只要它们不自己滚动。在这种情况下,将其设置为固定高度是有意义的。

正确的解决方案是wrap_content在 RecyclerView 高度上使用,然后实现可以正确处理包装的自定义 LinearLayoutManager。

将此 LinearLayoutManager 复制到您的项目中:https ://github.com/serso/android-linear-layout-manager/blob/master/lib/src/main/java/org/solovyev/android/views/llm/LinearLayoutManager.java

然后包装 RecyclerView:

<android.support.v7.widget.RecyclerView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"/>

并像这样设置它:

    RecyclerView list = (RecyclerView)findViewById(R.id.list);
    list.setHasFixedSize(true);
    list.setLayoutManager(new com.example.myapp.LinearLayoutManager(list.getContext()));
    list.setAdapter(new MyViewAdapter(data));

编辑:这可能会导致滚动复杂化,因为 RecyclerView 可以窃取 ScrollView 的触摸事件。我的解决方案是完全放弃 RecyclerView 并使用 LinearLayout,以编程方式膨胀子视图,并将它们添加到布局中。

于 2015-11-03T22:07:42.700 回答
16

对于ScrollView,您可以使用fillViewport=true并制作layout_height="match_parent"如下并将回收器视图放入其中:

<ScrollView
    android:fillViewport="true"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_below="@+id/llOptions">
          <android.support.v7.widget.RecyclerView
            android:id="@+id/rvList"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            />
</ScrollView>

无需通过代码进一步调整高度。

于 2016-01-17T15:43:20.980 回答
14

尝试这个。很晚的答案。但肯定会在未来帮助任何人。

将您的 Scrollview 设置为 NestedScrollView

<android.support.v4.widget.NestedScrollView>
 <android.support.v7.widget.RecyclerView>
</android.support.v7.widget.RecyclerView>
</android.support.v4.widget.NestedScrollView>

在您的回收站视图中

recyclerView.setNestedScrollingEnabled(false); 
recyclerView.setHasFixedSize(false);
于 2017-09-21T06:16:38.357 回答
14

手动计算RecyclerView高度不好,最好使用自定义LayoutManager

上述问题的原因是任何具有滚动(,,,ListViewGridViewRecyclerView视图在添加为另一个视图的子视图时无法计算其高度。因此,覆盖其onMeasure方法将解决问题。

请将默认布局管理器替换为以下内容:

public class MyLinearLayoutManager extends android.support.v7.widget.LinearLayoutManager {

private static boolean canMakeInsetsDirty = true;
private static Field insetsDirtyField = null;

private static final int CHILD_WIDTH = 0;
private static final int CHILD_HEIGHT = 1;
private static final int DEFAULT_CHILD_SIZE = 100;

private final int[] childDimensions = new int[2];
private final RecyclerView view;

private int childSize = DEFAULT_CHILD_SIZE;
private boolean hasChildSize;
private int overScrollMode = ViewCompat.OVER_SCROLL_ALWAYS;
private final Rect tmpRect = new Rect();

@SuppressWarnings("UnusedDeclaration")
public MyLinearLayoutManager(Context context) {
    super(context);
    this.view = null;
}

@SuppressWarnings("UnusedDeclaration")
public MyLinearLayoutManager(Context context, int orientation, boolean reverseLayout) {
    super(context, orientation, reverseLayout);
    this.view = null;
}

@SuppressWarnings("UnusedDeclaration")
public MyLinearLayoutManager(RecyclerView view) {
    super(view.getContext());
    this.view = view;
    this.overScrollMode = ViewCompat.getOverScrollMode(view);
}

@SuppressWarnings("UnusedDeclaration")
public MyLinearLayoutManager(RecyclerView view, int orientation, boolean reverseLayout) {
    super(view.getContext(), orientation, reverseLayout);
    this.view = view;
    this.overScrollMode = ViewCompat.getOverScrollMode(view);
}

public void setOverScrollMode(int overScrollMode) {
    if (overScrollMode < ViewCompat.OVER_SCROLL_ALWAYS || overScrollMode > ViewCompat.OVER_SCROLL_NEVER)
        throw new IllegalArgumentException("Unknown overscroll mode: " + overScrollMode);
    if (this.view == null) throw new IllegalStateException("view == null");
    this.overScrollMode = overScrollMode;
    ViewCompat.setOverScrollMode(view, overScrollMode);
}

public static int makeUnspecifiedSpec() {
    return View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
}

@Override
public void onMeasure(RecyclerView.Recycler recycler, RecyclerView.State state, int widthSpec, int heightSpec) {
    final int widthMode = View.MeasureSpec.getMode(widthSpec);
    final int heightMode = View.MeasureSpec.getMode(heightSpec);

    final int widthSize = View.MeasureSpec.getSize(widthSpec);
    final int heightSize = View.MeasureSpec.getSize(heightSpec);

    final boolean hasWidthSize = widthMode != View.MeasureSpec.UNSPECIFIED;
    final boolean hasHeightSize = heightMode != View.MeasureSpec.UNSPECIFIED;

    final boolean exactWidth = widthMode == View.MeasureSpec.EXACTLY;
    final boolean exactHeight = heightMode == View.MeasureSpec.EXACTLY;

    final int unspecified = makeUnspecifiedSpec();

    if (exactWidth && exactHeight) {
        // in case of exact calculations for both dimensions let's use default "onMeasure" implementation
        super.onMeasure(recycler, state, widthSpec, heightSpec);
        return;
    }

    final boolean vertical = getOrientation() == VERTICAL;

    initChildDimensions(widthSize, heightSize, vertical);

    int width = 0;
    int height = 0;

    // it's possible to get scrap views in recycler which are bound to old (invalid) adapter entities. This
    // happens because their invalidation happens after "onMeasure" method. As a workaround let's clear the
    // recycler now (it should not cause any performance issues while scrolling as "onMeasure" is never
    // called whiles scrolling)
    recycler.clear();

    final int stateItemCount = state.getItemCount();
    final int adapterItemCount = getItemCount();
    // adapter always contains actual data while state might contain old data (f.e. data before the animation is
    // done). As we want to measure the view with actual data we must use data from the adapter and not from  the
    // state
    for (int i = 0; i < adapterItemCount; i++) {
        if (vertical) {
            if (!hasChildSize) {
                if (i < stateItemCount) {
                    // we should not exceed state count, otherwise we'll get IndexOutOfBoundsException. For such items
                    // we will use previously calculated dimensions
                    measureChild(recycler, i, widthSize, unspecified, childDimensions);
                } else {
                    logMeasureWarning(i);
                }
            }
            height += childDimensions[CHILD_HEIGHT];
            if (i == 0) {
                width = childDimensions[CHILD_WIDTH];
            }
            if (hasHeightSize && height >= heightSize) {
                break;
            }
        } else {
            if (!hasChildSize) {
                if (i < stateItemCount) {
                    // we should not exceed state count, otherwise we'll get IndexOutOfBoundsException. For such items
                    // we will use previously calculated dimensions
                    measureChild(recycler, i, unspecified, heightSize, childDimensions);
                } else {
                    logMeasureWarning(i);
                }
            }
            width += childDimensions[CHILD_WIDTH];
            if (i == 0) {
                height = childDimensions[CHILD_HEIGHT];
            }
            if (hasWidthSize && width >= widthSize) {
                break;
            }
        }
    }

    if (exactWidth) {
        width = widthSize;
    } else {
        width += getPaddingLeft() + getPaddingRight();
        if (hasWidthSize) {
            width = Math.min(width, widthSize);
        }
    }

    if (exactHeight) {
        height = heightSize;
    } else {
        height += getPaddingTop() + getPaddingBottom();
        if (hasHeightSize) {
            height = Math.min(height, heightSize);
        }
    }

    setMeasuredDimension(width, height);

    if (view != null && overScrollMode == ViewCompat.OVER_SCROLL_IF_CONTENT_SCROLLS) {
        final boolean fit = (vertical && (!hasHeightSize || height < heightSize))
                || (!vertical && (!hasWidthSize || width < widthSize));

        ViewCompat.setOverScrollMode(view, fit ? ViewCompat.OVER_SCROLL_NEVER : ViewCompat.OVER_SCROLL_ALWAYS);
    }
}

private void logMeasureWarning(int child) {
    if (BuildConfig.DEBUG) {
        Log.w("MyLinearLayoutManager", "Can't measure child #" + child + ", previously used dimensions will be reused." +
                "To remove this message either use #setChildSize() method or don't run RecyclerView animations");
    }
}

private void initChildDimensions(int width, int height, boolean vertical) {
    if (childDimensions[CHILD_WIDTH] != 0 || childDimensions[CHILD_HEIGHT] != 0) {
        // already initialized, skipping
        return;
    }
    if (vertical) {
        childDimensions[CHILD_WIDTH] = width;
        childDimensions[CHILD_HEIGHT] = childSize;
    } else {
        childDimensions[CHILD_WIDTH] = childSize;
        childDimensions[CHILD_HEIGHT] = height;
    }
}

@Override
public void setOrientation(int orientation) {
    // might be called before the constructor of this class is called
    //noinspection ConstantConditions
    if (childDimensions != null) {
        if (getOrientation() != orientation) {
            childDimensions[CHILD_WIDTH] = 0;
            childDimensions[CHILD_HEIGHT] = 0;
        }
    }
    super.setOrientation(orientation);
}

public void clearChildSize() {
    hasChildSize = false;
    setChildSize(DEFAULT_CHILD_SIZE);
}

public void setChildSize(int childSize) {
    hasChildSize = true;
    if (this.childSize != childSize) {
        this.childSize = childSize;
        requestLayout();
    }
}

private void measureChild(RecyclerView.Recycler recycler, int position, int widthSize, int heightSize, int[] dimensions) {
    final View child;
    try {
        child = recycler.getViewForPosition(position);
    } catch (IndexOutOfBoundsException e) {
        if (BuildConfig.DEBUG) {
            Log.w("MyLinearLayoutManager", "MyLinearLayoutManager doesn't work well with animations. Consider switching them off", e);
        }
        return;
    }

    final RecyclerView.LayoutParams p = (RecyclerView.LayoutParams) child.getLayoutParams();

    final int hPadding = getPaddingLeft() + getPaddingRight();
    final int vPadding = getPaddingTop() + getPaddingBottom();

    final int hMargin = p.leftMargin + p.rightMargin;
    final int vMargin = p.topMargin + p.bottomMargin;

    // we must make insets dirty in order calculateItemDecorationsForChild to work
    makeInsetsDirty(p);
    // this method should be called before any getXxxDecorationXxx() methods
    calculateItemDecorationsForChild(child, tmpRect);

    final int hDecoration = getRightDecorationWidth(child) + getLeftDecorationWidth(child);
    final int vDecoration = getTopDecorationHeight(child) + getBottomDecorationHeight(child);

    final int childWidthSpec = getChildMeasureSpec(widthSize, hPadding + hMargin + hDecoration, p.width, canScrollHorizontally());
    final int childHeightSpec = getChildMeasureSpec(heightSize, vPadding + vMargin + vDecoration, p.height, canScrollVertically());

    child.measure(childWidthSpec, childHeightSpec);

    dimensions[CHILD_WIDTH] = getDecoratedMeasuredWidth(child) + p.leftMargin + p.rightMargin;
    dimensions[CHILD_HEIGHT] = getDecoratedMeasuredHeight(child) + p.bottomMargin + p.topMargin;

    // as view is recycled let's not keep old measured values
    makeInsetsDirty(p);
    recycler.recycleView(child);
}

private static void makeInsetsDirty(RecyclerView.LayoutParams p) {
    if (!canMakeInsetsDirty) {
        return;
    }
    try {
        if (insetsDirtyField == null) {
            insetsDirtyField = RecyclerView.LayoutParams.class.getDeclaredField("mInsetsDirty");
            insetsDirtyField.setAccessible(true);
        }
        insetsDirtyField.set(p, true);
    } catch (NoSuchFieldException e) {
        onMakeInsertDirtyFailed();
    } catch (IllegalAccessException e) {
        onMakeInsertDirtyFailed();
    }
}

private static void onMakeInsertDirtyFailed() {
    canMakeInsetsDirty = false;
    if (BuildConfig.DEBUG) {
        Log.w("MyLinearLayoutManager", "Can't make LayoutParams insets dirty, decorations measurements might be incorrect");
    }
}
}
于 2015-11-05T10:56:41.827 回答
13

如果你把它放在RecyclerView里面NestedScrollView并启用recyclerView.setNestedScrollingEnabled(false);,滚动效果会很好
但是,有一个问题

RecyclerView 不回收

例如,您的RecyclerView(inside NestedScrollViewor ScrollView) 有 100 个项目。启动
时,将创建100 个项目(并且将同时调用 100 个项目)。 例如,对于每个项目,您将从 API 加载一个大图像 => 创建的活动 -> 将加载 100 个图像。 它使启动 Activity 缓慢和滞后。可能的解决方案: - 考虑使用多种类型。 ActivityonCreateViewHolderonBindViewHolder



RecyclerView

但是,如果在您的情况下,只有几个项目RecyclerView回收不回收不会对性能影响很大,您可以RecyclerView在里面ScrollView使用简单

于 2018-09-13T08:02:28.163 回答
9

更新:这个答案现在已经过时了,因为有像 NestedScrollView 和 RecyclerView 这样的小部件支持嵌套滚动。

您永远不应该将可滚动视图放在另一个可滚动视图中!

我建议你制作你的主要布局回收视图并将你的视图作为回收视图的项目。

看看这个例子,它展示了如何在回收器视图适配器中使用多个视图。 链接到示例

于 2014-11-25T06:14:46.240 回答
4

您可以使用这种方式:

将此行添加到您的 recyclerView xml 视图中:

        android:nestedScrollingEnabled="false"

试试看,recyclerview 会以灵活的高度平滑滚动

希望这有帮助。

于 2016-12-21T17:09:19.010 回答
4

似乎NestedScrollView确实解决了问题。我已经使用这种布局进行了测试:

<android.support.v4.widget.NestedScrollView
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:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
>

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    >

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

    <android.support.v7.widget.CardView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="16dp"
        android:layout_marginRight="16dp"
        >
        <android.support.v7.widget.RecyclerView
            android:id="@+id/recycler_view"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"/>

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

</LinearLayout>

它可以正常工作

于 2016-05-27T04:45:19.410 回答
2

我使用 CustomLayoutManager 来禁用 RecyclerView 滚动。也不要将 Recycler View 用作 WrapContent,将其用作 0dp,Weight=1

public class CustomLayoutManager extends LinearLayoutManager {
    private boolean isScrollEnabled;

    // orientation should be LinearLayoutManager.VERTICAL or HORIZONTAL
    public CustomLayoutManager(Context context, int orientation, boolean isScrollEnabled) {
        super(context, orientation, false);
        this.isScrollEnabled = isScrollEnabled;
    }

    @Override
    public boolean canScrollVertically() {
        //Similarly you can customize "canScrollHorizontally()" for managing horizontal scroll
        return isScrollEnabled && super.canScrollVertically();
    }
}

在 RecyclerView 中使用 CustomLayoutManager:

CustomLayoutManager mLayoutManager = new CustomLayoutManager(getBaseActivity(), CustomLayoutManager.VERTICAL, false);
        recyclerView.setLayoutManager(mLayoutManager);
        ((DefaultItemAnimator) recyclerView.getItemAnimator()).setSupportsChangeAnimations(false); 
        recyclerView.setAdapter(statsAdapter);

用户界面 XML:

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/background_main"
    android:fillViewport="false">


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

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

            <edu.aku.family_hifazat.libraries.mpchart.charts.PieChart
                android:id="@+id/chart1"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginBottom="@dimen/x20dp"
                android:minHeight="@dimen/x300dp">

            </edu.aku.family_hifazat.libraries.mpchart.charts.PieChart>


        </FrameLayout>

        <android.support.v7.widget.RecyclerView
            android:id="@+id/recyclerView"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1">


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


    </LinearLayout>


</ScrollView>
于 2018-12-31T11:03:14.013 回答
2

我遇到了同样的问题。这就是我尝试过的并且有效。我正在分享我的 xml 和 java 代码。希望这会对某人有所帮助。

这是xml

<?xml version="1.0" encoding="utf-8"?>

< NestedScrollView
    android:layout_width="match_parent"
    android:layout_height="wrap_content">
    <LinearLayout
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <ImageView
            android:id="@+id/iv_thumbnail"
            android:layout_width="match_parent"
            android:layout_height="200dp" />

        <TextView
            android:id="@+id/tv_description"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Description" />

        <Button
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Buy" />

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Reviews" />
        <android.support.v7.widget.RecyclerView
            android:id="@+id/rc_reviews"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

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

    </LinearLayout>
</NestedScrollView >

这是相关的java代码。它就像一个魅力。

LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
recyclerView.setLayoutManager(linearLayoutManager);
recyclerView.setNestedScrollingEnabled(false);
于 2016-11-14T05:07:34.997 回答
1

这可以解决问题:

recyclerView.setNestedScrollingEnabled(false);
于 2018-03-17T14:00:20.610 回答
1

实际上 的主要目的RecyclerView是补偿ListViewScrollView。而不是做你实际在做的事情:在 aRecyclerView中拥有 a ScrollView,我建议只有 aRecyclerView可以处理多种类型的孩子。

于 2015-08-27T05:41:13.323 回答
0

对于那些仅仅为了设计目的而尝试这样做的人- 离开它。重新设计您的应用程序,只留下RecyclerView. 这将是比做任何硬编码更好的解决方案。

于 2020-11-10T10:06:53.673 回答
0

如果 RecyclerView 在 ScrollView 中只显示一行。您只需要将行的高度设置为android:layout_height="wrap_content".

于 2016-11-18T05:21:26.720 回答
0

您还可以覆盖 LinearLayoutManager 以使 recyclerview 顺利滚动

@Override
    public boolean canScrollVertically(){
        return false;
    }
于 2017-03-12T06:32:13.557 回答
0

最好的解决方案是保留multiple Views一个Single View / View Group视图,然后在 SrcollView 中保留一个视图。IE。

格式 -

<ScrollView> 
  <Another View>
       <RecyclerView>
       <TextView>
       <And Other Views>
  </Another View>
</ScrollView>

例如。

<ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <TextView           
              android:text="any text"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"/>


        <TextView           
              android:text="any text"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"/>
 </ScrollView>

另一个例如。具有多个视图的 ScrollView

<ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1">
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:orientation="vertical"
            android:layout_weight="1">

            <androidx.recyclerview.widget.RecyclerView
                android:id="@+id/imageView"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:background="#FFFFFF"
                />

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:paddingHorizontal="10dp"
                android:orientation="vertical">

                <TextView
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:text="@string/CategoryItem"
                    android:textSize="20sp"
                    android:textColor="#000000"
                    />

                <TextView
                    android:textColor="#000000"
                    android:text="₹1000"
                    android:textSize="18sp"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"/>
                <TextView
                    android:textColor="#000000"
                    android:text="so\nugh\nos\nghs\nrgh\n
                    sghs\noug\nhro\nghreo\nhgor\ngheroh\ngr\neoh\n
                    og\nhrf\ndhog\n
                    so\nugh\nos\nghs\nrgh\nsghs\noug\nhro\n
                    ghreo\nhgor\ngheroh\ngr\neoh\nog\nhrf\ndhog"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"/>

             </LinearLayout>

        </LinearLayout>

</ScrollView>
于 2020-10-30T10:49:28.003 回答
0

解决该问题的另一种方法是使用ConstraintLayoutinside ScrollView

<ScrollView>
  <ConstraintLayout> (this is the only child of ScrollView)
    <...Some Views...>
    <RecyclerView> (layout_height=wrap_content)
    <...Some Other Views...>

但我还是会坚持androidx.core.widget.NestedScrollView 杨培勇提出的方法

于 2020-04-15T18:33:15.520 回答
0

很抱歉迟到了,但似乎还有另一种解决方案非常适合您提到的情况。

如果您在回收站视图中使用回收站视图,它似乎工作得非常好。我亲自尝试并使用过它,它似乎一点也不慢,也不生涩。现在我不确定这是否是一个好习惯,但是嵌套多个回收器视图,甚至嵌套的滚动视图都会变慢。但这似乎工作得很好。请试一试。我相信嵌套会很好。

于 2017-06-30T06:33:57.997 回答
0

首先你应该使用NestedScrollView而不是ScrollViewRecyclerView里面NestedScrollView

使用自定义布局类来测量屏幕的高度和宽度:

public class CustomLinearLayoutManager extends LinearLayoutManager {

public CustomLinearLayoutManager(Context context, int orientation, boolean reverseLayout) {
    super(context, orientation, reverseLayout);
}

private int[] mMeasuredDimension = new int[2];

@Override
public void onMeasure(RecyclerView.Recycler recycler, RecyclerView.State state,
                      int widthSpec, int heightSpec) {
    final int widthMode = View.MeasureSpec.getMode(widthSpec);
    final int heightMode = View.MeasureSpec.getMode(heightSpec);
    final int widthSize = View.MeasureSpec.getSize(widthSpec);
    final int heightSize = View.MeasureSpec.getSize(heightSpec);
    int width = 0;
    int height = 0;
    for (int i = 0; i < getItemCount(); i++) {
        if (getOrientation() == HORIZONTAL) {
            measureScrapChild(recycler, i,
                    View.MeasureSpec.makeMeasureSpec(i, View.MeasureSpec.UNSPECIFIED),
                    heightSpec,
                    mMeasuredDimension);

            width = width + mMeasuredDimension[0];
            if (i == 0) {
                height = mMeasuredDimension[1];
            }
        } else {
            measureScrapChild(recycler, i,
                    widthSpec,
                    View.MeasureSpec.makeMeasureSpec(i, View.MeasureSpec.UNSPECIFIED),
                    mMeasuredDimension);
            height = height + mMeasuredDimension[1];
            if (i == 0) {
                width = mMeasuredDimension[0];
            }
        }
    }
    switch (widthMode) {
        case View.MeasureSpec.EXACTLY:
            width = widthSize;
        case View.MeasureSpec.AT_MOST:
        case View.MeasureSpec.UNSPECIFIED:
    }

    switch (heightMode) {
        case View.MeasureSpec.EXACTLY:
            height = heightSize;
        case View.MeasureSpec.AT_MOST:
        case View.MeasureSpec.UNSPECIFIED:
    }

    setMeasuredDimension(width, height);
}

private void measureScrapChild(RecyclerView.Recycler recycler, int position, int widthSpec,
                               int heightSpec, int[] measuredDimension) {
    View view = recycler.getViewForPosition(position);
    recycler.bindViewToPosition(view, position);
    if (view != null) {
        RecyclerView.LayoutParams p = (RecyclerView.LayoutParams) view.getLayoutParams();
        int childWidthSpec = ViewGroup.getChildMeasureSpec(widthSpec,
                getPaddingLeft() + getPaddingRight(), p.width);
        int childHeightSpec = ViewGroup.getChildMeasureSpec(heightSpec,
                getPaddingTop() + getPaddingBottom(), p.height);
        view.measure(childWidthSpec, childHeightSpec);
        measuredDimension[0] = view.getMeasuredWidth() + p.leftMargin + p.rightMargin;
        measuredDimension[1] = view.getMeasuredHeight() + p.bottomMargin + p.topMargin;
        recycler.recycleView(view);
    }
}
}

并在活动/片段中实现以下代码RecyclerView

 final CustomLinearLayoutManager layoutManager = new CustomLinearLayoutManager(this, LinearLayoutManager.VERTICAL, false);

    recyclerView.setLayoutManager(layoutManager);
    recyclerView.setAdapter(mAdapter);

    recyclerView.setNestedScrollingEnabled(false); // Disables scrolling for RecyclerView, CustomLinearLayoutManager used instead of MyLinearLayoutManager
    recyclerView.setHasFixedSize(false);

    recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
        @Override
        public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
            super.onScrolled(recyclerView, dx, dy);

            int visibleItemCount = layoutManager.getChildCount();
            int totalItemCount = layoutManager.getItemCount();
            int lastVisibleItemPos = layoutManager.findLastVisibleItemPosition();
            Log.i("getChildCount", String.valueOf(visibleItemCount));
            Log.i("getItemCount", String.valueOf(totalItemCount));
            Log.i("lastVisibleItemPos", String.valueOf(lastVisibleItemPos));
            if ((visibleItemCount + lastVisibleItemPos) >= totalItemCount) {
                Log.i("LOG", "Last Item Reached!");
            }
        }
    });
于 2016-08-08T06:18:17.310 回答
0

您可以尝试将回收站视图 Hight 设置为 wrap_content。就我而言,它工作正常。我正在滚动视图中尝试使用 2 个不同的回收器视图

于 2020-10-08T11:34:27.423 回答
-2

**对我有用的解决方案
使用高度为 wrap_content 的 NestedScrollView

<br> RecyclerView 
                android:layout_width="match_parent"<br>
                android:layout_height="wrap_content"<br>
                android:nestedScrollingEnabled="false"<br>
                  app:layoutManager="android.support.v7.widget.LinearLayoutManager"
                tools:targetApi="lollipop"<br><br> and view holder layout 
 <br> android:layout_width="match_parent"<br>
        android:layout_height="wrap_content"

//你的行内容放在这里

于 2017-08-02T16:46:13.963 回答