android-layout - Android - 如何将 SlidingUpPanelLayout 设置为屏幕高度的一半？

Question

我正在使用 Umano 的 SlidingUpPanelLayout 来提供一个滑动面板，您可以从屏幕底部向上拖动它。您可以在此处找到文档:

https://github.com/umano/AndroidSlidingUpPanel

我想要它，以便面板在扩展时只填满屏幕的一半。文档说明了这一点:

• The main layout should have the width and the height set to match_parent.
• The sliding layout should have the width set to match_parent and the height set to either match_parent, wrap_content or the max desireable height. If you would like to define the height as the percetange of the screen, set it to match_parent and also define a layout_weight attribute for the sliding view.

这是我的包含滑动面板的 XML 布局:

    <?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="com.example.bleachedlizard.policeapp.mainactivity.MainActivity">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:popupTheme="@style/AppTheme.PopupOverlay" />

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

    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <com.sothree.slidinguppanel.SlidingUpPanelLayout
            android:id="@+id/sliding_up_panel"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:gravity="bottom">

            <include layout="@layout/main_content" />

            <FrameLayout
                android:id="@+id/contact_details_frame"
                android:layout_width="match_parent"
                android:layout_height="match_parent">

            </FrameLayout>


        </com.sothree.slidinguppanel.SlidingUpPanelLayout>

    </FrameLayout>


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

我试过向 contact_details_frame 添加 layout_weight 属性，但它不起作用。事实上，当我尝试添加 layout_weight 属性时，Android Studio 不会自动完成(我猜是因为它需要在 LinearLayout 内才能使该属性在那里有效)。我已经尝试添加一个 LinearLayout，无论是单独的还是带有空的 View 来尝试占据屏幕的上半部分，但仍然没有。

有人能告诉我如何让 SlidingUpPanelLayout 只占据屏幕的一半吗？

Answer 1

我测试了很多方法，但没有一个有效，但是这是另一种方式。希望它有帮助:)

First: just change sothree:umanoPanelHeight value to 0dp that it'll hide bottom bar of SlidingUpPanelLayout

<com.sothree.slidinguppanel.SlidingUpPanelLayout
        // your code
        sothree:umanoPanelHeight="0dp">

Second: make a barlayout or button [Not in dragView]
(to open SlidingUpPanelLayout, instead of using the bar that SlidingUpPanelLayout shows itself)

<Button
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/btn_open_slide_panel"
    android:text="open SlidingUpPanelLayout "/>

Third: in SetOnClickListener method of your view(that we made in second part)

1. Call method setAnchorPoint() and pass 0.5f as argument
2. Use ANCHORED as PanelState

slidingUpPanelLayout.setAnchorPoint(0.5f);
slidingUpPanelLayout.setPanelState(SlidingUpPanelLayout.PanelState.ANCHORED);

希望能帮助到你 :)