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[英]How to put TextView below RecyclerView in NestedScrollView in android
[英]Textview doesnot shows up above RecyclerView in nestedscrollview android
<?xml version="1.0" encoding="utf-8"?> <android.support.v4.widget.NestedScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:keepScreenOn="true"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="com.tech.world.MainActivity"
tools:showIn="@layout/app_bar_main_activity"
android:fillViewport="true" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin" >
<TextView
android:id="@+id/textView"
android:textColor="#43a047"
android:typeface="serif"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:text="@string/app"
android:gravity="center"
android:textStyle="bold"
android:textSize="15sp" />
<android.support.v7.widget.RecyclerView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/recyclerview"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/textView"
android:layout_marginTop="10dp"
android:divider="@color/colorAccent"
android:dividerHeight="1dp" />
</RelativeLayout> </android.support.v4.widget.NestedScrollView>
现在上面的textview没有显示,我必须向下滚动以查看textview,我也使用工具栏,由于这个应用程序扩展和联系协调器布局:layout_behavior =“@ string / appbar_scrolling_view_behavior”
我想确保textview在启动时可见,而不需要滚动一下就可以看到它
将android:focusableInTouchMode="true"
为您的回收站视图的父布局,即您的相对布局。
查看这篇文章 。
切换到ConstraintLayout是我的解决方案
我的工作代码使用CoordinatorLayout
<?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=".PostsActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/MyMaterialTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="@style/MyMaterialTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:paddingLeft="5dp"
android:paddingRight="5dp"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<TextView
android:id="@+id/txtUserName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="User"
android:textAlignment="center"
android:textSize="25sp"
android:textStyle="bold"
android:layout_marginBottom="@dimen/padding_10"/>
<android.support.v7.widget.RecyclerView
android:id="@+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clipToPadding="false"
android:orientation="vertical"
android:scrollbars="vertical"
android:layout_below="@+id/txtUserName"/>
</RelativeLayout>
</android.support.design.widget.CoordinatorLayout>
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