NativeAdsExpress强制RecyclerView滚动以在首次加载时使NativeAd完全可见

Question

我有一个奇怪的"问题",或者可能是一个"功能",我只是不知道,只要在我的RecyclerView中加载NativeAdExpress,如果只有部分NativeAd可见,它会强制RecyclerView滚动直到原生广告变得完全可见,这种行为导致列表在我滚动时继续跳跃.

我的布局主要是:

具有Tabs和ViewPager的Activity> AppBar> Pager中的每个页面都包含PullToRefresh,里面有一个RecyclerView,RecyclerView有两种类型的项目(Article和NativeAdExpress).

更新:我猜测为什么会发生这种情况主要是因为原生广告在webview中表达渲染,并且这个webview获得焦点然后这会导致RecyclerView滚动到它,但这只是一个猜测

更新2:显然这是支持库中的一个问题.24.0.0,这太过于up2date的成本:(

Heres是我的完整XML /布局

<?xml version="1.0" encoding="utf-8"?>
<my.package.custom.views.CustomDrawerLayout
    android:id="@+id/drawer_layout"
    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"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:openDrawer="end">

    <include
        layout="@layout/app_bar_main"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

    <android.support.design.widget.NavigationView
        android:id="@+id/nav_view"
        style="@style/AlertDialog.AppCompat.Light"
        fontPath="fonts/fonts/DroidKufi-Regular.ttf"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="end"
        android:fitsSystemWindows="true"
        app:elevation="5px"
        app:headerLayout="@layout/nav_header"
        app:itemIconTint="@color/colorPrimary"
        app:itemTextColor="@color/contentColor"
        app:actionLayout="@layout/nav_item_layout"
        app:menu="@menu/drawer_menu"
        app:theme="@style/NavDrawerStyle"
        tools:openDrawer="end"
        />

</my.package.custom.views.CustomDrawerLayout>

其中"app_bar_main.xml"如下:

<?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"
    tools:context=".ui.activities.ArticlesListActivity">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="end">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="52dp"
            android:background="?attr/colorPrimary"
            android:gravity="end"
            app:popupTheme="@style/ThemeOverlay.AppCompat.Light">

            <RelativeLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:gravity="center_vertical"
                android:orientation="horizontal"
                android:paddingEnd="14dp"
                android:paddingStart="14dp">

                <android.support.v7.widget.AppCompatImageButton
                    android:id="@+id/ivCustomDrawable"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_alignParentEnd="true"
                    android:layout_alignParentRight="true"
                    android:layout_centerVertical="true"
                    android:background="@color/transparent"
                    android:tint="@color/white"
                    />

                <TextView
                    android:id="@+id/view_title"
                    android:visibility="gone"
                    style="@style/SectionTitle"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_centerInParent="true"
                    />

                <android.support.v7.widget.AppCompatSpinner
                    android:id="@+id/sources_spinner"
                    android:gravity="center"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_alignParentLeft="true"
                    android:transitionName="@string/transition_splash_logo"
                    app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
                    tools:targetApi="lollipop"/>
            </RelativeLayout>

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

        <android.support.design.widget.TabLayout
            android:id="@+id/tabs"
            style="@style/TabsStyle"
            android:layout_width="match_parent"
            android:layout_height="42dp"
            android:layout_gravity="bottom"
            android:layout_marginTop="0dp"
            android:transitionGroup="true"
            app:tabContentStart="0dp"
            app:tabGravity="fill"
            app:tabIndicatorColor="@color/white"
            app:tabIndicatorHeight="3dp"
            app:tabMode="scrollable"
            app:tabPaddingBottom="0dp"
            app:tabPaddingTop="0dp"
            app:tabTextAppearance="@style/TextAppearance.RegularTextFont"
            />

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

    <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"
            app:layout_behavior="@string/appbar_scrolling_view_behavior"
            tools:context=".ui.activities.ArticlesListActivity"
            tools:showIn="@layout/activity_newsitem_list">

       <android.support.v4.view.ViewPager
         android:id="@+id/viewpager"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
        />
    </RelativeLayout>
</android.support.design.widget.CoordinatorLayout>

最后我有2个View Types Item和NativeAdExpress:

NativeAdExpress ViewHolder如下:

public class NativeExpressAdViewHolder extends BaseCardAdViewHolder {
    private final NativeExpressAdView view;
    private boolean loaded = false;
    private AdListener adListener;
    private WeakReference<Context> context;

    public NativeExpressAdViewHolder(View itemView, String adId, Context context) {
        super(itemView);
        view = new NativeExpressAdView(context);
        view.setAdUnitId(adId);
        ((LinearLayout) itemView.findViewById(R.id.express_ad_holder)).addView(view);
        this.context = new WeakReference<>(context);
    }

    public void loadAd(float cardWidthInDips) {
        if (!loaded && null != context.get() && !view.isLoading()) {
            int width = cardWidthInDips > 0 ? (int) cardWidthInDips : 330;
            if (view.getAdSize() == null) {
                view.setAdSize(new AdSize(width, 330));
                view.setAdListener(new AdListener() {
                    @Override
                    public void onAdLoaded() {
                        super.onAdLoaded();
                        loaded = true;
                        if (adListener != null) {
                            adListener.onAdLoaded();
                        }
                    }

                    @Override
                    public void onAdFailedToLoad(int i) {
                        super.onAdFailedToLoad(i);
                        if (adListener != null) {
                            adListener.onAdFailedToLoad(i);
                        }
                    }

                    @Override
                    public void onAdOpened() {
                        super.onAdOpened();
                        if (adListener != null) {
                            adListener.onAdOpened();
                        }
                    }
                });
            }
            new Handler(context.get().getMainLooper()).post(new Runnable() {
                @Override
                public void run() {
                    view.loadAd(new AdRequest.Builder().build());
                }
            });
        }
    }

    public NativeExpressAdView getView() {
        return view;
    }

    public void setAdListener(AdListener adListener) {
        this.adListener = adListener;
    }

    @Override
    public void destroyAd() {
        if (view != null) {
            view.destroy();
            loaded = false;
        }
    }
}

并使用自定义适配器创建广告,如下所示:

private BaseCardViewHolder createNativeExpressAdViewHolder(ViewGroup parent) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.ad_express, parent, false);
        final NativeExpressAdViewHolder viewHolder = new NativeExpressAdViewHolder(
            view,
            adManager.getNativeExpressAdId(),
            context.get()
        );
        adViewHolders.add(viewHolder);
        viewHolder.setAdListener(new AdListener() {
            @Override
            public void onAdFailedToLoad(int errorCode) {
                Log.i("ADS", "onAdFailedToLoad " + errorCode);
            }

            @Override
            public void onAdLoaded() {
                super.onAdLoaded();
                // Do something
            }
        });
        viewHolder.loadAd(cardWidthInDips);

        return viewHolder;
    }

Answer 1

我不明白你RecyclerView在代码中实际实现了什么,但无论如何这可能是你的情况下可以工作的东西.

我有一个类似的问题,GridView在Fragment第一次加载时始终获得焦点,它也会自动向下滚动到GridView.

经过大量测试后,我终于在父布局上使用以下一行停止了此行为GridView:

android:descendantFocusability="blocksDescendants"

这一行基本上意味着来自父布局的所有后代将不再获得焦点.您可以在RecyclerView父布局上试用它.