在 CollapsingToolbarLayout 上停止滚动，使其不会完全折叠 [英] Stop scroll on CollapsingToolbarLayout so it doesn't completely collapse

问题描述

我有一个 CollapsingToolbarLayout 设置，我在那里放了一张墙纸.我希望能够阻止它一路崩溃.

我尝试过 minheight 和许多其他东西，但无法弄清楚.

我怎样才能让它停止折叠到第二个屏幕截图?

在加载活动时查看

期望的停止点

当前停止点

解决方案

CollapsingToolbarLayout 与 Toolbar 的工作非常紧密，因此折叠高度取决于工具栏.>

我能够使用此布局解决您的问题(注意它进入正常的CoordinatorLayout/AppBarLayout 设置，使用 Fab 和一个NestedScrollView 或 RecyclerView):

I have a CollapsingToolbarLayout setup and im placing a wallpaper there. I want to be able to stop it from collapsing all the way.

I have tried minheight and many other things but can't figure it out.

How can i get it to stop collapsing to the second screenshot?

View when activity is loaded



Desired Stopping Point



Current Stopping Point

解决方案
CollapsingToolbarLayout works really closely with Toolbar and as such the collapsed height depends on the toolbar.

I was able to solve your problem using this layout (Note it goes into the normal CoordinatorLayout/AppBarLayout Setup, With Fab and a NestedScrollView or RecyclerView):
<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_scrollFlags="scroll|exitUntilCollapsed"
    app:statusBarScrim="?attr/colorPrimaryDark"
    app:contentScrim="@android:color/transparent"
    app:titleEnabled="false"
    >
    <!-- There isnt a contentSCrim attribute so the toolbar is transparent after being
         collapsed
         Disabled the title also as you wont be needing it -->

    <ImageView
        android:id="@+id/image_v"
        android:layout_width="match_parent"
        android:layout_height="360dp"
        android:layout_gravity="center"
        android:scaleType="centerCrop"
        android:src="@drawable/md2"
        android:fitsSystemWindows="true"
        app:layout_collapseMode="parallax"
        tools:ignore="ContentDescription"
        />
        <!-- Normal Imageview. Nothing interesting -->

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="168dp"
        app:layout_collapseMode="pin"
        app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
        />
        <!-- The toolbar is styled normally. However we disable the title also in code.
        Toolbar height is the main component that determines the collapsed height -->

    <TextView
        android:text="@string/app_name"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom"
        android:background="?attr/colorPrimaryDark"
        android:paddingLeft="72dp"
        android:paddingRight="0dp"
        android:paddingBottom="24dp"
        android:paddingTop="24dp"
        android:textColor="@android:color/white"
        android:textAppearance="@style/TextAppearance.AppCompat.Headline"
        />
        <!-- The title textView -->

</android.support.design.widget.CollapsingToolbarLayout>
The related activity looks like this:
    ...
    setSupportActionBar((Toolbar) findViewById(R.id.toolbar));
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);

    // Disable toolbar title
    getSupportActionBar().setDisplayShowTitleEnabled(false);
    ...
Here's a video of the interaction



                        
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