将颜色设置为选项卡布局中未选中的选项卡指示器

Question

我正在使用 google 提供的 tablayout，除了未选择的选项卡指示器的颜色外，一切正常。 我无法设置未选择的选项卡指示器颜色。

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

 <android.support.design.widget.AppBarLayout
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

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

     <android.support.design.widget.TabLayout
         android:id="@+id/tabs"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         app:tabMode="fixed"
         style="@style/MyCustomTabLayout"

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

 <android.support.v4.view.ViewPager
     android:id="@+id/viewpager"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     app:layout_behavior="@string/appbar_scrolling_view_behavior" /> </android.support.design.widget.CoordinatorLayout>

Answer 1

尝试根据需要更改颜色：

在可绘制文件夹中创建此文件

tab_indicator_color.xml ：

<?xml version="1.0" encoding="utf-8"?>
    <selector xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- UNSELECTED TAB STATE -->
    <item android:state_selected="false" android:state_pressed="false">
        <layer-list>
            <!-- Bottom indicator color for the UNSELECTED tab state -->
            <item android:top="-5dp" android:left="-5dp" android:right="-5dp">
                <shape android:shape="rectangle">
                    <stroke android:color="#65acee" android:width="2dp"/>
                </shape>
            </item>
        </layer-list>
    </item>
</selector>

在 app:tabBackground 中设置您的 .xml 文件后，如下所示：

 <android.support.design.widget.TabLayout
        android:id="@+id/tabs"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:tabMode="fixed"
        style="@style/MyCustomTabLayout"
        app:tabBackground="@drawable/tab_indicator_color" />

Answer 2

**1.app:**

    tabBackground="@drawable/tablayout_selector"

**2.tablayout_selector.xml**

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">

    <item>
        <shape android:shape="rectangle">
            <solid android:color="@color/shl_common_default_color" />
        </shape>
    </item>
    <item>
        <inset android:insetBottom="1.5dp">
            <shape android:shape="rectangle">
                <solid android:color="@color/white" />
            </shape>
        </inset>
    </item>
</layer-list>


or

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">

    <item>
        <shape android:shape="rectangle">
            <solid android:color="@color/white" />
        </shape>
    </item>
    <item android:gravity="bottom">
        <shape android:shape="rectangle">
            <solid android:color="@color/shl_common_default_color" />
            <size android:height="1.5dp" />
        </shape>
    </item>
</layer-list>

Answer 3

ic_tab_indicator_default.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape android:shape="rectangle" />
    </item>
    <item android:gravity="bottom">
        <shape android:shape="rectangle">
            <size android:height="1dp" />
            <solid android:color="@color/steel_blue" />
        </shape>
    </item>
</layer-list>

ic_tab_indicator_selected.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape android:shape="rectangle" />
    </item>
    <item android:gravity="bottom">
        <shape android:shape="rectangle">
            <size android:height="3dp" />
            <solid android:color="@color/congress_blue" />
        </shape>
    </item>
</layer-list>

selector_tab_indicator.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/ic_tab_indicator_selected" android:state_selected="true" />
    <item android:drawable="@drawable/ic_tab_indicator_default" />
</selector>

选项卡布局

<com.google.android.material.tabs.TabLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:tabIndicator="@android:color/transparent"
        app:tabBackground="@drawable/selector_tab_indicator">

Answer 4

对于使用新 com.google.android.material.tabs.TabLayout 的人，如果您应用本文中作为正确答案给出的解决方案，选项卡的所有四个边都会出现角

要解决该问题，请使用以下“hack”

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- UNSELECTED TAB STATE -->
    <item android:state_selected="false" android:state_pressed="false">
        <layer-list xmlns:android="http://schemas.android.com/apk/res/android">
            <!-- Bottom indicator color for the UNSELECTED tab state -->
            <item  android:top="-10dp" android:left="-1000dp" android:right="-1000dp">
                <shape android:shape="rectangle" >
                    <stroke android:color="#4cffffff" android:width="1dp"/>
                </shape>
            </item>
        </layer-list>
    </item>
</selector>