Question

我在AppBarLayout中使用RelativeLayout

进行了CollapsingToolbarLayout

<android.support.design.widget.AppBarLayout
        android:id="@+id/appbar"
        android:layout_width="match_parent"
        android:layout_height="360dp"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

        <android.support.design.widget.CollapsingToolbarLayout
            android:id="@+id/collapsing_toolbar"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:fitsSystemWindows="true"
            app:layout_behavior="@string/appbar_scrolling_view_behavior"
            app:layout_scrollFlags="scroll|exitUntilCollapsed">




            <RelativeLayout android:layout_width="match_parent"
                            android:layout_height="wrap_content">

                <include android:id="@+id/post_meta"
                         layout="@layout/item_post_meta_layout"
                         android:layout_width="match_parent"
                         android:layout_height="100dp"
                         android:layout_alignParentBottom="true"
                         app:layout_collapseMode="none"
                         app:layout_scrollFlags="scroll|snap"
                />

                <ImageView
                    android:id="@+id/header"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_above="@id/post_meta"
                    android:fitsSystemWindows="true"
                    android:minHeight="292dp"
                    android:scaleType="centerCrop"
                    app:layout_collapseMode="pin"
                    app:layout_collapseParallaxMultiplier="0.7"
                    />


            </RelativeLayout>

            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
            />

        </android.support.design.widget.CollapsingToolbarLayout>


    </android.support.design.widget.AppBarLayout>

正如你所看到的，在RelativeLayout 2中，我想在滚动时做出不同的行为：向上滚动时，我的布局（id = post_meta）在图像下滚动，图像固定到工具栏。可能吗？如果是这样，我该怎么做呢？

Answer 1

所以，我找到了解决办法并以这种方式做到了：

<?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="match_parent"
    android:background="@color/white"
    android:orientation="vertical">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appbar"
        android:layout_width="match_parent"
        android:layout_height="460dp"
        android:fitsSystemWindows="true"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

        <android.support.design.widget.CollapsingToolbarLayout
            android:id="@+id/collapsing_toolbar"
            android:layout_width="match_parent"
            android:layout_height="460dp"
            android:fitsSystemWindows="false"
            android:minHeight="?attr/actionBarSize"
            app:layout_collapseMode="pin"
            app:layout_scrollFlags="scroll|snap|exitUntilCollapsed">

            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                app:layout_collapseMode="pin"
                app:layout_scrollFlags="scroll|enterAlways"
                app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
            />

            <include android:id="@+id/post_meta"
                     layout="@layout/item_post_meta_layout"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
                     android:layout_gravity="bottom"
                     app:layout_scrollFlags="scroll|enterAlways|exitUntilCollapsed"
            />


            <RelativeLayout
                android:layout_width="match_parent"
                android:layout_height="340dp"
                app:layout_collapseMode="parallax"
                app:layout_scrollFlags="scroll|enterAlwaysCollapsed">

                <android.support.v4.view.ViewPager
                    android:id="@+id/post_pager"
                    layout_collapseParallaxMultiplier="0.7"
                    android:layout_width="match_parent"
                    android:layout_height="340dp"/>

                <com.viewpagerindicator.CirclePageIndicator
                    android:id="@+id/circlePageInd"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_alignParentBottom="true"
                    android:layout_marginBottom="4dp"
                    app:fillColor="#E0E0E0"
                    app:pageColor="#FFF"
                    app:radius="2dp"/>
            </RelativeLayout>

        </android.support.design.widget.CollapsingToolbarLayout>


    </android.support.design.widget.AppBarLayout>

    <RelativeLayout android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:clipToPadding="false"
                    android:orientation="vertical"
                    android:paddingBottom="50dp"
                    app:layout_behavior="@string/appbar_scrolling_view_behavior"
                    app:layout_collapseMode="pin"
                    app:layout_scrollFlags="scroll|enterAlways">


        <android.support.v7.widget.RecyclerView
            android:id="@+id/chat_rv"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="@color/white"
            android:clipToPadding="false"
            android:fillViewport="true"
            android:minHeight="100dp"/>

    </RelativeLayout>
    <include layout="@layout/send_container"/>

</android.support.design.widget.CoordinatorLayout>

所以，这里post_meta布局在RelativeLayout下使用ViewPager滚动时向上滚动，并在RelativeLayout向下滚动后用ViewPager滚出RelativeLayout。

在CollapsingTollbarLayout中不同子项上的不同滚动行为

1 个答案: