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：
活动>带Tabs和ViewPager的AppBar>寻呼机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;
}
