在多个布局中使用RecyclerView

时间:2016-01-27 20:11:02

标签: android android-layout android-recyclerview recycler-adapter facebook-audience-network

我有RecyclerView有2个布局。第一个描述主要项目,第二个描述facebook native Ad。它有效,但每次position NativeViewAd显示在显示屏上 - 我们都可以看到微滞后。

recycler_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="250dp"
android:orientation="vertical"
android:padding="8dp"
android:id="@+id/list_item">

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

    <ImageView
        android:id="@+id/food_picture"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:adjustViewBounds="true"
        android:src="@drawable/blank2" />


</LinearLayout>

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <TextView
            android:id="@+id/title"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:text="@string/test_name_food"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:textColor="#242424"
            android:paddingTop="4dp" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:paddingLeft="8dp"
        android:paddingBottom="8dp"
        android:paddingRight="8dp"
        android:paddingTop="4dp">
        <TextView
            android:id="@+id/ingr_count"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/test_name_ingr"
            android:textAppearance="?android:attr/textAppearanceSmall"
            android:layout_weight="1"
            android:textAlignment="center"
            android:layout_gravity="center_vertical"
            android:gravity="center" />
        <!--
                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:orientation="horizontal"
                    android:layout_weight="33">

                    <ImageView
                        android:id="@+id/ic_ingredient"
                        android:layout_width="24dp"
                        android:layout_height="24dp"
                        android:src="@drawable/ic_ingredient"
                        android:layout_gravity="center_vertical"
                        android:layout_weight="1"
                        android:paddingRight="8dp" />
                    <ImageView
                        android:id="@+id/ic_time"
                        android:layout_width="24dp"
                        android:layout_height="24dp"
                        android:src="@drawable/ic_time"
                        android:layout_gravity="center_vertical|right"
                        android:layout_weight="1"
                        android:paddingLeft="8dp" />
        </LinearLayout>
        -->



        <TextView
            android:id="@+id/look"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:text="Просмотреть"
            android:textAppearance="?android:attr/textAppearanceSmall"
            android:layout_gravity="center"
            android:textAlignment="center"
            android:gravity="center"
            android:textColor="#4CAF50"
            android:textStyle="bold"
            android:typeface="normal"
            android:layout_weight="1" />

    </LinearLayout>


</LinearLayout>

additional.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="300dp"
android:orientation="vertical"
android:id="@+id/ad_test2"
android:background="@drawable/blank2">

<ImageView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:src="@drawable/blank2"
    android:id="@+id/blank_holder"/>

如果您需要RecyclerAdapter.class https://gist.github.com/burnix/d0b32f0dc4b525ec3aa7,请参阅layouts http://www.w3schools.com/js/js_if_else.asp,但我认为layouts中存在问题。

那我怎么解决我的问题呢?

P.S。如果height甚至具有相同的$ cordova prepare ,则不会消失。

1 个答案:

答案 0 :(得分:1)

我对Stackoverflow感到非常沮丧。似乎只有前青少年在这里冲浪才能回答如下问题:&#34;为什么我在onClick上有NPE?&#34; ...

这是解决方案。希望它会有用:  解决Recycler的滞后问题: 在适配器中:

   Picasso.with(context)
          .load(...)
          .tag("resume_tag")
          .into(...);

EndlessScrollListener班级

   @Override
public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
    super.onScrollStateChanged(recyclerView, newState);
    final Picasso picasso = Picasso.with(context);
    if (newState == RecyclerView.SCROLL_STATE_IDLE) {
        picasso.resumeTag("resume_tag");
    } else {
        picasso.pauseTag("resume_tag");
    }

}

在课堂上,调用RecyclerView:

    if (offset == 0)
                            adapter.notifyItemRangeInserted(0, foodDataList.size());  //or adapter.notifyDataSetChanged()
                        else
                            adapter.notifyItemRangeChanged(foodDataList.size() - jsonArray.length(), foodDataList.size());