CoordinatorLayout带有折叠的工具栏,NestedScrollView和RecyclerView底部有空白空间(滚动太远)

时间:2018-08-05 16:43:16

标签: android android-recyclerview android-coordinatorlayout android-collapsingtoolbarlayout android-nestedscrollview

正如标题所述,我使用的是折叠式工具栏,并且内部带有 <ion-card *ngIf="property.id"> <ion-slides pager> <ion-slide ng-repeat="pic in property.picture" style="background-color: green"> <img src="{{pic}}"/> </ion-slide> </ion-slides> </ion-card> 的{​​{1}},每当NestedScrollView中有5项或更少项时,空间显示(例如,如果我只有2个项目,则底部的空间会很大,但是如果我有6个以上项目,则将没有空白空间。)

这是图像和XML:

LayoutInspector and emulator showing the issue

RecyclerView

到目前为止我尝试过的解决方案:

  • RecyclerView添加到<?xml version="1.0" encoding="utf-8"?> <android.support.design.widget.CoordinatorLayout android:layout_width="match_parent" android:layout_height="match_parent" xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto"> <android.support.design.widget.AppBarLayout android:id="@+id/appbar" android:layout_width="match_parent" android:background="@color/backgroundColor" android:layout_height="wrap_content"> <android.support.design.widget.CollapsingToolbarLayout android:id="@+id/episodeDetailsCollapsingToolbar" android:layout_width="match_parent" android:layout_height="match_parent" app:title="Lorem ipsum dolor sit amet" app:navigationIcon="@drawable/ic_arrow_back_black" app:layout_scrollFlags="scroll|exitUntilCollapsed" > <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical"> <FrameLayout android:layout_width="match_parent" android:layout_height="wrap_content"> <ImageView android:layout_width="match_parent" android:layout_height="300dp" android:contentDescription="@string/episode_photo" android:id="@+id/photoImageView" android:src="@drawable/ic_image_60dp" android:scaleType="centerCrop"/> <View android:layout_width="match_parent" android:layout_height="40dp" android:layout_gravity="top" android:background="@drawable/fade_to_white_gradient_top"/> <View android:layout_width="match_parent" android:layout_height="40dp" android:layout_gravity="bottom" android:background="@drawable/fade_to_white_gradient"/> </FrameLayout> <Space android:layout_width="wrap_content" android:layout_height="70dp"/> </LinearLayout> <android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="?android:attr/actionBarSize" android:background="@android:color/transparent" android:theme="@style/ToolBarStyle" app:navigationIcon="@drawable/ic_arrow_back_black" app:layout_collapseMode="pin" android:id="@+id/episodeListToolbar" /> </android.support.design.widget.CollapsingToolbarLayout> </android.support.design.widget.AppBarLayout> <android.support.v4.widget.NestedScrollView android:layout_width="match_parent" android:layout_height="wrap_content" android:paddingBottom="0dp" android:layout_marginBottom="0dp" app:layout_behavior="@string/appbar_scrolling_view_behavior"> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_gravity="bottom" android:layout_height="wrap_content"> <TextView android:layout_marginTop="10dp" android:layout_width="wrap_content" android:layout_height="wrap_content" android:paddingStart="25dp" android:textColor="@color/colorPrimary" android:textSize="16sp" android:paddingBottom="5dp" android:text="@string/item_season_episode_placeholder" android:id="@+id/seasonEpisodeTextView"/> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/lorem_ipsum" android:paddingStart="25dp" android:paddingEnd="25dp" android:textSize="15sp" android:textColor="@color/textColor" android:id="@+id/descriptionTextView"/> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/comments" android:textSize="14sp" android:textColor="@color/textColor" android:padding="5dp" android:layout_margin="20dp" android:drawableStart="@drawable/ic_comments" android:drawablePadding="8dp" android:foreground="?selectableItemBackground" android:id="@+id/commentsButton"/> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/other_episodes" android:paddingStart="25dp" android:paddingEnd="15dp" android:textSize="20sp" android:textColor="@color/darkTextColor" android:textStyle="bold"/> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:gravity="center" android:visibility="gone" android:id="@+id/emptyNextFiveLinearLayout"> <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/ic_empty_placeholder" android:layout_marginBottom="10dp" android:contentDescription="@string/empty_placeholder_image"/> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textAlignment="center" android:text="@string/empty_message" android:textSize="15sp"/> </LinearLayout> <android.support.v7.widget.RecyclerView android:layout_width="match_parent" android:layout_height="wrap_content" android:paddingStart="5dp" android:paddingEnd="5dp" android:id="@+id/episodeDetailsRecyclerView"/> </LinearLayout> </android.support.v4.widget.NestedScrollView> </android.support.design.widget.CoordinatorLayout>
  • android:fitsSystemWindows="true"添加到CoordinatorLayout
  • android:fillViewport="true"添加到NestedScrollViewandroid:layout_gravity="fill_vertical"
  • NestedScrollView添加到RecyclerView

1 个答案:

答案 0 :(得分:0)

这是预期的行为,因为折叠的工具栏需要在使用的任何位置完全折叠,因此它会在底部创建额外的空白空间。