更新到支持库23.2.1之后，RecyclerView底部具有很大空白空间的项目 [英] RecyclerView items with very large empty space at bottom after updating to support library 23.2.1
问题描述
我将支持库更新为23.2.1，此后，recyclerview项出现了很大的空白. 尽管我使用的是recyclerview，它的父视图高度为WRAP_CONTENT. 我的应用程序一次从服务器获取10个项目数据，向上滚动时，它的底部显示一个进度条，因此(此时显示进度条)recyclerview项显示的空白空间很大.
I have updated support library to 23.2.1 and after that recyclerview items are appearing with big empty space. Though I am using recyclerview and it's parent view height as WRAP_CONTENT. My App fetches 10 items data at a time from the server and while scrolling to up it shows a progressbar at the bottom so at that time(while progressbar is showing) recyclerview items are showing with very large empty space.
分别用于片段和适配器的xml文件的代码:
Code for xml files for fragment and adapter repectively :
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clipToPadding="false"
android:paddingTop="?attr/actionBarSize"
android:scrollbars="vertical"
android:id="@+id/recycler_view"/>
<include layout="@layout/date_picker_layout"
android:id="@+id/date"
android:layout_height="?attr/actionBarSize"
android:layout_width="match_parent"/>
<LinearLayout
android:layout_width="@dimen/sort_view_width"
android:layout_height="@dimen/sort_view_height"
android:visibility="gone"
android:id="@+id/sort_layout"
android:background="@drawable/date_picker_selector"
android:baselineAligned="false"
android:weightSum="2"
android:orientation="horizontal"
android:divider="@drawable/vertical_divider"
android:layout_gravity="center"
android:gravity="center"
android:showDividers="middle"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_marginRight="@dimen/margin_large"
android:layout_marginBottom="@dimen/margin_large">
<ImageView
android:layout_width="0dp"
android:layout_height="@dimen/button_size"
android:layout_weight="1"
android:padding="@dimen/margin_xxsmall"
android:id="@+id/low_to_high"
android:src="@drawable/ic_sort_down"/>
<ImageView
android:layout_width="0dp"
android:layout_height="@dimen/button_size"
android:layout_weight="1"
android:padding="@dimen/margin_xxsmall"
android:id="@+id/high_to_low"
android:src="@drawable/ic_sort_up"/>
</LinearLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:drawableBottom="@drawable/three_dot"
android:visibility="gone"
android:textSize="@dimen/textsize_medium"
android:text="@string/coming_soon"
android:id="@+id/no_items"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true" />
</RelativeLayout>
adapter.xml
adapter.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:wheel="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/itemview">
<ImageView
android:id="@+id/image"
android:layout_height="@dimen/list_image_height"
android:layout_width="match_parent"
android:scaleType="centerCrop"
android:adjustViewBounds="true"/>
<com.example.views.CircularProgressWheel
android:layout_width="@dimen/progressbar_width"
android:layout_height="@dimen/progressbar_height"
android:id="@+id/progress_bar"
android:visibility="gone"
wheel:matProg_barColor="@color/primary"
wheel:matProg_progressIndeterminate="true"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/gradient"
android:layout_alignBottom="@id/image"
android:id="@+id/relativeLayout2">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/name"
android:id="@+id/title"
android:textColor="@color/white"
android:textSize="@dimen/textsize_medium"
android:layout_toLeftOf="@+id/price"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginLeft="@dimen/margin_xsmall"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="@dimen/margin_xsmall"
android:text="@string/location"
android:id="@+id/location"
android:textColor="@color/white"
android:textSize="@dimen/textsize_medium"
android:layout_below="@+id/title"
android:layout_toLeftOf="@+id/price"
android:layout_alignLeft="@+id/title"
android:layout_alignStart="@+id/title" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/price"
android:layout_marginRight="@dimen/margin_xsmall"
android:id="@+id/price_actual"
android:textColor="@color/white"
android:textSize="@dimen/textsize_medium"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/price"
android:id="@+id/price"
android:textColor="@color/white"
android:textSize="@dimen/textsize_medium"
android:layout_below="@+id/title"
android:layout_alignRight="@+id/price_actual"
android:layout_alignEnd="@+id/price_actual" />
</RelativeLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="@dimen/margin_xxsmall"
android:textSize="@dimen/textsize_medium"
android:background="@drawable/cancel_button_selector"
android:visibility="gone"
android:textColor="@color/white"
android:text="@string/sold_out"
android:id="@+id/sold_out"
android:layout_marginRight="@dimen/margin_xsmall"
android:layout_above="@+id/relativeLayout2"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />
</RelativeLayout>
推荐答案
确保将回收者视图的高度设置为wrap_content. 23.2 引入了RecylerView的包装内容功能，您如果要让RecyclerView像以前一样工作，应将其高度设置为wrap_content.
Make sure your recycler view height is set to wrap_content. 23.2 introduced wrap content functionality for RecylerView and you should have the height as wrap_content if you want your RecyclerView work as it was working before.
由于此更改，请确保仔细检查 您的商品视图:以前忽略的布局参数(例如 现在将完全遵守滚动方向上的MATCH_PARENT.
Due to this change, make sure to double check the layout parameters of your item views: previously ignored layout parameters (such as MATCH_PARENT in the scroll direction) will now be fully respected.
这篇关于更新到支持库23.2.1之后，RecyclerView底部具有很大空白空间的项目的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
