我希望在我的安卓应用中实现可折叠的工具栏。虽然我已经可以按照自己的想法显示工具栏,但是它在滚动时并没有折叠起来。
我正在使用以下代码:
activity.xml
<?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"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:orientation="vertical"
tools:context=".MainActivity">
<include layout="@layout/main_toolbar" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<com.gigamole.navigationtabstrip.NavigationTabStrip
android:id="@+id/nts_strip"
android:layout_width="match_parent"
android:layout_height="30dp"
android:background="@color/colorPrimary"
android:elevation="4dp"
app:nts_active_color="@color/white"
app:nts_animation_duration="300"
app:nts_color="@color/white"
app:nts_corners_radius="1.5dp"
app:nts_inactive_color="@color/white_transparent"
app:nts_titles="@array/nts_titles" />
<android.support.v4.view.ViewPager
android:id="@+id/pager_photos"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="@color/white_transparent" />
</LinearLayout>
</LinearLayout>
main_toolbar.xml
<?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"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_collapseMode="parallax"
android:orientation="vertical">
<android.support.design.widget.AppBarLayout
android:id="@+id/appBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="@+id/collapsingToolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_scrollFlags="scroll|enterAlwaysCollapsed">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="@color/colorPrimary"
app:layout_collapseMode="pin"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light">
<TextView
android:id="@+id/tv_toolbar_title"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_vertical"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="@color/white" />
</android.support.v7.widget.Toolbar>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
以下是屏幕显示的样子。
![enter image description here](https://istack.dev59.com/meo3f.webp)
app:layout_scrollFlags="exitUntilCollapsed"
修改为app:layout_scrollFlags="scroll|enterAlwaysCollapsed"
,用于CollapsingToolbarLayout
。 @KaranMer - Piyushactivity.xml
中的父级LinearlLayout
中应该存在。 - PiyushCoordinateLayout
,请移除_app:layout_collapseMode="parallax"_
。 - Piyush