Question

我使用嵌套的RecycleViews来重现Google的收件箱外观。现在，我的问题是，每当我尝试滚动项目时，它似乎都会被卡住＆＃34;过了一会儿：

数据已经加载，而且相当于静态＆＃34; （它来自一个本地数据库，它加载在主要活动的一个属性中 - 图像是唯一可以动态检索的东西，我使用Picasso就可以了。）

我已经在嵌套的回收站视图之间共享了视图池...我还尝试删除了图片，但我仍然没有顺利滚动...

这是我的主要布局：

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout 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/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true">
    <FrameLayout
        android:id="@+id/content_frame"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior"
        android:background="#FFE7E8ED">
        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            android:theme="@style/ThemeOverlay.AppCompat.ActionBar"
            app:titleTextColor="@color/colorWhite" />
        <!-- forcing focus due neste layout -->
        <!-- https://stackoverflow.com/questions/36923948/recycleview-steals-focus-when-inside-a-nestedscrollview?utm_medium=organic&utm_source=google_rich_qa&utm_campaign=google_rich_qa -->
        <android.support.constraint.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:focusableInTouchMode="true"
            android:paddingTop="?android:attr/actionBarSize">
            <android.support.v4.widget.SwipeRefreshLayout
                android:id="@+id/swiper"
                android:layout_width="0dp"
                android:layout_height="0dp"
                android:layout_marginBottom="8dp"
                android:layout_marginTop="8dp"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent">
                <android.support.v7.widget.RecyclerView
                    android:id="@+id/lista"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:scrollbarSize="4dp"
                    android:scrollbarThumbVertical="@color/lightgray"
                    android:scrollbars="vertical">
                </android.support.v7.widget.RecyclerView>
            </android.support.v4.widget.SwipeRefreshLayout>
        </android.support.constraint.ConstraintLayout>
    </FrameLayout>
    <!-- Container for contents of drawer - use NavigationView to make configuration easier -->
    <android.support.design.widget.NavigationView
        android:id="@+id/nav_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:fitsSystemWindows="true"
        app:headerLayout="@layout/drawer_header"
        app:menu="@menu/drawer_viewer" />
</android.support.v4.widget.DrawerLayout>

这里是recyclerview项目的布局：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">
    <TextView
        android:id="@+id/catalog_name"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="18dp"
        android:layout_marginRight="8dp"
        android:layout_marginTop="10dp"
        android:textAlignment="inherit"
        android:textAppearance="@android:style/TextAppearance.Material.WindowTitle"
        android:textColor="@android:color/darker_gray"
        android:textSize="16sp"
        android:textStyle="bold" />
    <android.support.v7.widget.CardView
        android:id="@+id/cardView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        app:cardElevation="4dp">
        <android.support.v7.widget.RecyclerView
            android:id="@+id/lista_noticias"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="8dp"
            android:clipToPadding="false"></android.support.v7.widget.RecyclerView>
    </android.support.v7.widget.CardView>
</LinearLayout>

最后，内部Recyclerview项目的布局：

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:card_view="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/card_view"
    android:layout_width="match_parent"
    android:layout_height="140dp"
    android:maxHeight="140dp"
    android:minHeight="140dp"
    card_view:cardCornerRadius="0dp"
    card_view:contentPadding="2dp">
    <android.support.constraint.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <ImageView
            android:id="@+id/logo"
            android:layout_width="73dp"
            android:layout_height="73dp"
            android:layout_marginStart="8dp"
            android:layout_marginTop="8dp"
            android:adjustViewBounds="false"
            android:scaleType="fitXY"
            card_view:layout_constraintStart_toStartOf="parent"
            card_view:layout_constraintTop_toTopOf="parent"
            card_view:srcCompat="@mipmap/ic_launcher" />
        <TextView
            android:id="@+id/title"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginEnd="8dp"
            android:layout_marginStart="8dp"
            android:layout_marginTop="8dp"
            android:ellipsize="end"
            android:gravity="center_vertical"
            android:lines="1"
            android:textAppearance="@android:style/TextAppearance.Material.Title"
            android:textSize="16sp"
            card_view:layout_constraintEnd_toEndOf="parent"
            card_view:layout_constraintStart_toEndOf="@+id/logo"
            card_view:layout_constraintTop_toTopOf="parent" />
        <TextView
            android:id="@+id/description"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:layout_below="@id/title"
            android:layout_marginBottom="32dp"
            android:layout_marginEnd="8dp"
            android:layout_marginStart="8dp"
            android:layout_marginTop="8dp"
            android:ellipsize="end"
            android:gravity="top|center_vertical"
            android:lines="3"
            android:text="Name"
            android:textAppearance="@android:style/TextAppearance.Material.SearchResult.Subtitle"
            card_view:layout_constraintBottom_toBottomOf="parent"
            card_view:layout_constraintEnd_toEndOf="parent"
            card_view:layout_constraintStart_toEndOf="@+id/logo"
            card_view:layout_constraintTop_toBottomOf="@+id/title"
            card_view:layout_constraintVertical_chainStyle="spread_inside" />
        <TextView
            android:id="@+id/publishDate"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginBottom="8dp"
            android:layout_marginEnd="8dp"
            android:text="10/10/2018 13:50"
            android:textAppearance="@android:style/TextAppearance.Material.Small"
            android:textSize="10sp"
            card_view:layout_constraintBottom_toBottomOf="parent"
            card_view:layout_constraintEnd_toEndOf="parent" />
    </android.support.constraint.ConstraintLayout>
</android.support.v7.widget.CardView>

有人可以告诉我我错过了什么吗？

感谢。

嵌套的recyclerview：在组之间滚动时卡住

0 个答案: