为什么工具栏中的某些菜单项显示为不同的颜色？
Why some menu item in the toolbar appears in a different colour?
我的应用程序的工具栏菜单中有三个项目，如下所示。
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="@+id/action_settings"
android:icon="@drawable/ic_vector_settings"
android:title="@string/action_settings"
app:showAsAction="ifRoom"/>
<item
android:id="@+id/my_search_bar"
android:title="Search"
android:icon="@drawable/ic_search2"
app:showAsAction="ifRoom"
app:actionViewClass="androidx.appcompat.widget.SearchView"/>
<item
android:id="@+id/help"
android:icon="@drawable/ic_reach_us"
android:title="@string/action_help"
app:showAsAction="ifRoom"/>
</menu>
这是预览中的样子。
以下是 android:icon="@drawable/ic_vector_settings"
的向量
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="24dp"
android:height="24dp"
android:viewportWidth="512"
android:viewportHeight="512">
<path
android:fillColor="#FFFFFF"
android:pathData="m272.066,512h-32.133c-25.989,0 -47.134,-21.144 -47.134,-47.133v-10.871c-11.049,-3.53 -21.784,-7.986 -32.097,-13.323l-7.704,7.704c-18.659,18.682 -48.548,18.134 -66.665,-0.007l-22.711,-22.71c-18.149,-18.129 -18.671,-48.008 0.006,-66.665l7.698,-7.698c-5.337,-10.313 -9.792,-21.046 -13.323,-32.097h-10.87c-25.988,0 -47.133,-21.144 -47.133,-47.133v-32.134c0,-25.989 21.145,-47.133 47.134,-47.133h10.87c3.531,-11.05 7.986,-21.784 13.323,-32.097l-7.704,-7.703c-18.666,-18.646 -18.151,-48.528 0.006,-66.665l22.713,-22.712c18.159,-18.184 48.041,-18.638 66.664,0.006l7.697,7.697c10.313,-5.336 21.048,-9.792 32.097,-13.323v-10.87c0,-25.989 21.144,-47.133 47.134,-47.133h32.133c25.989,0 47.133,21.144 47.133,47.133v10.871c11.049,3.53 21.784,7.986 32.097,13.323l7.704,-7.704c18.659,-18.682 48.548,-18.134 66.665,0.007l22.711,22.71c18.149,18.129 18.671,48.008 -0.006,66.665l-7.698,7.698c5.337,10.313 9.792,21.046 13.323,32.097h10.87c25.989,0 47.134,21.144 47.134,47.133v32.134c0,25.989 -21.145,47.133 -47.134,47.133h-10.87c-3.531,11.05 -7.986,21.784 -13.323,32.097l7.704,7.704c18.666,18.646 18.151,48.528 -0.006,66.665l-22.713,22.712c-18.159,18.184 -48.041,18.638 -66.664,-0.006l-7.697,-7.697c-10.313,5.336 -21.048,9.792 -32.097,13.323v10.871c0,25.987 -21.144,47.131 -47.134,47.131zM165.717,409.17c14.327,8.473 29.747,14.874 45.831,19.025 6.624,1.709 11.252,7.683 11.252,14.524v22.148c0,9.447 7.687,17.133 17.134,17.133h32.133c9.447,0 17.134,-7.686 17.134,-17.133v-22.148c0,-6.841 4.628,-12.815 11.252,-14.524 16.084,-4.151 31.504,-10.552 45.831,-19.025 5.895,-3.486 13.4,-2.538 18.243,2.305l15.688,15.689c6.764,6.772 17.626,6.615 24.224,0.007l22.727,-22.726c6.582,-6.574 6.802,-17.438 0.006,-24.225l-15.695,-15.695c-4.842,-4.842 -5.79,-12.348 -2.305,-18.242 8.473,-14.326 14.873,-29.746 19.024,-45.831 1.71,-6.624 7.684,-11.251 14.524,-11.251h22.147c9.447,0 17.134,-7.686 17.134,-17.133v-32.134c0,-9.447 -7.687,-17.133 -17.134,-17.133h-22.147c-6.841,0 -12.814,-4.628 -14.524,-11.251 -4.151,-16.085 -10.552,-31.505 -19.024,-45.831 -3.485,-5.894 -2.537,-13.4 2.305,-18.242l15.689,-15.689c6.782,-6.774 6.605,-17.634 0.006,-24.225l-22.725,-22.725c-6.587,-6.596 -17.451,-6.789 -24.225,-0.006l-15.694,15.695c-4.842,4.843 -12.35,5.791 -18.243,2.305 -14.327,-8.473 -29.747,-14.874 -45.831,-19.025 -6.624,-1.709 -11.252,-7.683 -11.252,-14.524v-22.15c0,-9.447 -7.687,-17.133 -17.134,-17.133h-32.133c-9.447,0 -17.134,7.686 -17.134,17.133v22.148c0,6.841 -4.628,12.815 -11.252,14.524 -16.084,4.151 -31.504,10.552 -45.831,19.025 -5.896,3.485 -13.401,2.537 -18.243,-2.305l-15.688,-15.689c-6.764,-6.772 -17.627,-6.615 -24.224,-0.007l-22.727,22.726c-6.582,6.574 -6.802,17.437 -0.006,24.225l15.695,15.695c4.842,4.842 5.79,12.348 2.305,18.242 -8.473,14.326 -14.873,29.746 -19.024,45.831 -1.71,6.624 -7.684,11.251 -14.524,11.251h-22.148c-9.447,0.001 -17.134,7.687 -17.134,17.134v32.134c0,9.447 7.687,17.133 17.134,17.133h22.147c6.841,0 12.814,4.628 14.524,11.251 4.151,16.085 10.552,31.505 19.024,45.831 3.485,5.894 2.537,13.4 -2.305,18.242l-15.689,15.689c-6.782,6.774 -6.605,17.634 -0.006,24.225l22.725,22.725c6.587,6.596 17.451,6.789 24.225,0.006l15.694,-15.695c3.568,-3.567 10.991,-6.594 18.244,-2.304z" />
<path
android:fillColor="#FFFFFF"
android:pathData="m256,367.4c-61.427,0 -111.4,-49.974 -111.4,-111.4s49.973,-111.4 111.4,-111.4 111.4,49.974 111.4,111.4 -49.973,111.4 -111.4,111.4zM256,174.6c-44.885,0 -81.4,36.516 -81.4,81.4s36.516,81.4 81.4,81.4 81.4,-36.516 81.4,-81.4 -36.515,-81.4 -81.4,-81.4z" />
</vector>
预览如下
向量 android:icon="@drawable/ic_search2"
<vector android:height="24dp" android:tint="#FFFFFF"
android:viewportHeight="24" android:viewportWidth="24"
android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
<path android:fillColor="@android:color/white" android:pathData="M15.5,14h-0.79l-0.28,-0.27C15.41,12.59 16,11.11 16,9.5 16,5.91 13.09,3 9.5,3S3,5.91 3,9.5 5.91,16 9.5,16c1.61,0 3.09,-0.59 4.23,-1.57l0.27,0.28v0.79l5,4.99L20.49,19l-4.99,-5zM9.5,14C7.01,14 5,11.99 5,9.5S7.01,5 9.5,5 14,7.01 14,9.5 11.99,14 9.5,14z"/>
</vector>
预览是
向量 android:icon="@drawable/ic_reach_us"
<vector android:height="24dp" android:tint="#145979"
android:viewportHeight="24" android:viewportWidth="24"
android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
<path android:fillColor="@android:color/white" android:pathData="M21,12.22C21,6.73 16.74,3 12,3c-4.69,0 -9,3.65 -9,9.28C2.4,12.62 2,13.26 2,14v2c0,1.1 0.9,2 2,2h1v-6.1c0,-3.87 3.13,-7 7,-7s7,3.13 7,7V19h-8v2h8c1.1,0 2,-0.9 2,-2v-1.22c0.59,-0.31 1,-0.92 1,-1.64v-2.3C22,13.14 21.59,12.53 21,12.22z"/>
<path android:fillColor="@android:color/white" android:pathData="M9,13m-1,0a1,1 0,1 1,2 0a1,1 0,1 1,-2 0"/>
<path android:fillColor="@android:color/white" android:pathData="M15,13m-1,0a1,1 0,1 1,2 0a1,1 0,1 1,-2 0"/>
<path android:fillColor="@android:color/white" android:pathData="M18,11.03C17.52,8.18 15.04,6 12.05,6c-3.03,0 -6.29,2.51 -6.03,6.45c2.47,-1.01 4.33,-3.21 4.86,-5.89C12.19,9.19 14.88,11 18,11.03z"/>
</vector>
及其预览，
如第一个图像搜索图标所示，在预览中显示为白色，但是当我 运行 应用程序时，只有 'action_settings' 显示为白色，而 'my_search_bar' 出现在黑色或某种深色和帮助显示在其预览（最后一个图像）中。我希望一切都是白色的。
如您所见，fillColour 的搜索图标和帮助图标在矢量代码中是白色的。我的代码出了什么问题？
编辑：
此外，溢出图标显示为黑色（或某种深色）。它没有显示在我提供的图像中，因为我将 never 替换为 ifRoom。
以下是styles.xml
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.MaterialComponents.Light.NoActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
<item name="actionBarTheme">@style/ThemeOverlay.MaterialComponents.Dark.ActionBar</item>
</style>
<style name="AppTheme.NoActionBar">
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
<item name="colorSurface">@color/colorBorder</item>
</style>
<style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
<style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
<style name="ProgressBarStyle">
<item name="colorAccent">@color/colorAccent</item>
</style>
<style name="DemoTheme" parent="Theme.AppCompat.Light.NoActionBar">
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorOfStatusBar</item>
<item name="colorAccent">@color/colorAccent</item>
</style>
在矢量图标中添加 android:tint="?android:attr/colorForeground" 后出现如下图。
以下是我在矢量代码中添加 android:tint="?android:attr/colorForeground" 的方式。每个图标的预览现在显示黑色。
注意:: 搜索图标不是黑色的，请检查最后一张图片。进行此更改后，设置和帮助图标从白色变为黑色，而搜索图标仍然相同（有点像灰色）
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="24dp"
android:height="24dp"
android:viewportWidth="24"
android:viewportHeight="24"
android:tint="?android:attr/colorForeground">
<path
android:fillColor="@android:color/white"
android:pathData="M15.5,14h-0.79l-0.28,-0.27C15.41,12.59 16,11.11 16,9.5 16,5.91 13.09,3 9.5,3S3,5.91 3,9.5 5.91,16 9.5,16c1.61,0 3.09,-0.59 4.23,-1.57l0.27,0.28v0.79l5,4.99L20.49,19l-4.99,-5zM9.5,14C7.01,14 5,11.99 5,9.5S7.01,5 9.5,5 14,7.01 14,9.5 11.99,14 9.5,14z"/>
</vector>
另请注意，
我在 'HomeActivity' 的 onCreate 中有 setSupportActionBar(binding.toolbarHome)，下面是我的 Toolbar
<androidx.appcompat.widget.Toolbar
android:id="@+id/toolbar_home"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="@drawable/app_gradient_color_background"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
android:layout_gravity="top"
android:theme="@style/AppTheme"
app:titleTextColor="@color/colorWhite"/>
我无法解释为什么当您 运行 应用程序时搜索图标不是白色，但帮助图标显然被标记为蓝色 (android:tint="#145979")。父 vector 元素中的 android:tint 覆盖任何子 path 元素的颜色。
我建议您在所有这些元素的顶级 vector 元素中设置 android:tint="?android:attr/colorForeground"，以便它们可以遵循您的主题。然后，如果您决定将它们设为不同的颜色或有一个 day/night 主题，它们在白天是不同的颜色，您只需在主题中的一个地方更改它，它们将始终与溢出图标匹配颜色.
如果你想在操作栏上使用白色文本和图标，我建议你使用名称中包含 DarkActionBar 的父主题，或者如果你使用 NoActionBar 并在其中包含一个工具栏您设置为支持操作栏的布局，然后使用 DarkActionBar 父级设置 actionBarTheme，例如包括：
<item name="actionBarTheme">@style/ThemeOverlay.MaterialComponents.Dark.ActionBar</item>
这也会使溢出图标变白。
编辑：我意识到只有在布局中使用带有 window 装饰操作栏的主题而不是带有工具栏的 NoActionBar 主题时，以上内容才有效。
帮助图标需要在 XML 中将其色调更改为白色。
来自评论：由于搜索按钮在菜单 XML 中有 actionViewClass，所以它被外部着色了。它使用主题中的 colorOnPrimary 来为其图标着色。因此，除了使用 @style/ThemeOverlay.MaterialComponents.Dark.ActionBar 作为 actionBarTheme，您还必须创建一个自定义操作栏覆盖主题并使用它。
<style name="MyThemeOverlay_Toolbar" parent="ThemeOverlay.MaterialComponents.Toolbar.Primary">
<item name="colorOnPrimary">@color/colorWhite</item>
</style>
<!-- and inside the app theme: -->
<item name="actionBarTheme">@style/MyThemeOverlay_Toolbar</item>
对于搜索图标，尝试更改
android:tint="#FFFFFF"
至
android:tint="#FFFFFFFF"
我不相信有默认的 alpha（就像 HTML 中那样），所以你的色调是白色，但 alpha 为零。
我的应用程序的工具栏菜单中有三个项目，如下所示。
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="@+id/action_settings"
android:icon="@drawable/ic_vector_settings"
android:title="@string/action_settings"
app:showAsAction="ifRoom"/>
<item
android:id="@+id/my_search_bar"
android:title="Search"
android:icon="@drawable/ic_search2"
app:showAsAction="ifRoom"
app:actionViewClass="androidx.appcompat.widget.SearchView"/>
<item
android:id="@+id/help"
android:icon="@drawable/ic_reach_us"
android:title="@string/action_help"
app:showAsAction="ifRoom"/>
</menu>
这是预览中的样子。
以下是 android:icon="@drawable/ic_vector_settings"
的向量<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="24dp"
android:height="24dp"
android:viewportWidth="512"
android:viewportHeight="512">
<path
android:fillColor="#FFFFFF"
android:pathData="m272.066,512h-32.133c-25.989,0 -47.134,-21.144 -47.134,-47.133v-10.871c-11.049,-3.53 -21.784,-7.986 -32.097,-13.323l-7.704,7.704c-18.659,18.682 -48.548,18.134 -66.665,-0.007l-22.711,-22.71c-18.149,-18.129 -18.671,-48.008 0.006,-66.665l7.698,-7.698c-5.337,-10.313 -9.792,-21.046 -13.323,-32.097h-10.87c-25.988,0 -47.133,-21.144 -47.133,-47.133v-32.134c0,-25.989 21.145,-47.133 47.134,-47.133h10.87c3.531,-11.05 7.986,-21.784 13.323,-32.097l-7.704,-7.703c-18.666,-18.646 -18.151,-48.528 0.006,-66.665l22.713,-22.712c18.159,-18.184 48.041,-18.638 66.664,0.006l7.697,7.697c10.313,-5.336 21.048,-9.792 32.097,-13.323v-10.87c0,-25.989 21.144,-47.133 47.134,-47.133h32.133c25.989,0 47.133,21.144 47.133,47.133v10.871c11.049,3.53 21.784,7.986 32.097,13.323l7.704,-7.704c18.659,-18.682 48.548,-18.134 66.665,0.007l22.711,22.71c18.149,18.129 18.671,48.008 -0.006,66.665l-7.698,7.698c5.337,10.313 9.792,21.046 13.323,32.097h10.87c25.989,0 47.134,21.144 47.134,47.133v32.134c0,25.989 -21.145,47.133 -47.134,47.133h-10.87c-3.531,11.05 -7.986,21.784 -13.323,32.097l7.704,7.704c18.666,18.646 18.151,48.528 -0.006,66.665l-22.713,22.712c-18.159,18.184 -48.041,18.638 -66.664,-0.006l-7.697,-7.697c-10.313,5.336 -21.048,9.792 -32.097,13.323v10.871c0,25.987 -21.144,47.131 -47.134,47.131zM165.717,409.17c14.327,8.473 29.747,14.874 45.831,19.025 6.624,1.709 11.252,7.683 11.252,14.524v22.148c0,9.447 7.687,17.133 17.134,17.133h32.133c9.447,0 17.134,-7.686 17.134,-17.133v-22.148c0,-6.841 4.628,-12.815 11.252,-14.524 16.084,-4.151 31.504,-10.552 45.831,-19.025 5.895,-3.486 13.4,-2.538 18.243,2.305l15.688,15.689c6.764,6.772 17.626,6.615 24.224,0.007l22.727,-22.726c6.582,-6.574 6.802,-17.438 0.006,-24.225l-15.695,-15.695c-4.842,-4.842 -5.79,-12.348 -2.305,-18.242 8.473,-14.326 14.873,-29.746 19.024,-45.831 1.71,-6.624 7.684,-11.251 14.524,-11.251h22.147c9.447,0 17.134,-7.686 17.134,-17.133v-32.134c0,-9.447 -7.687,-17.133 -17.134,-17.133h-22.147c-6.841,0 -12.814,-4.628 -14.524,-11.251 -4.151,-16.085 -10.552,-31.505 -19.024,-45.831 -3.485,-5.894 -2.537,-13.4 2.305,-18.242l15.689,-15.689c6.782,-6.774 6.605,-17.634 0.006,-24.225l-22.725,-22.725c-6.587,-6.596 -17.451,-6.789 -24.225,-0.006l-15.694,15.695c-4.842,4.843 -12.35,5.791 -18.243,2.305 -14.327,-8.473 -29.747,-14.874 -45.831,-19.025 -6.624,-1.709 -11.252,-7.683 -11.252,-14.524v-22.15c0,-9.447 -7.687,-17.133 -17.134,-17.133h-32.133c-9.447,0 -17.134,7.686 -17.134,17.133v22.148c0,6.841 -4.628,12.815 -11.252,14.524 -16.084,4.151 -31.504,10.552 -45.831,19.025 -5.896,3.485 -13.401,2.537 -18.243,-2.305l-15.688,-15.689c-6.764,-6.772 -17.627,-6.615 -24.224,-0.007l-22.727,22.726c-6.582,6.574 -6.802,17.437 -0.006,24.225l15.695,15.695c4.842,4.842 5.79,12.348 2.305,18.242 -8.473,14.326 -14.873,29.746 -19.024,45.831 -1.71,6.624 -7.684,11.251 -14.524,11.251h-22.148c-9.447,0.001 -17.134,7.687 -17.134,17.134v32.134c0,9.447 7.687,17.133 17.134,17.133h22.147c6.841,0 12.814,4.628 14.524,11.251 4.151,16.085 10.552,31.505 19.024,45.831 3.485,5.894 2.537,13.4 -2.305,18.242l-15.689,15.689c-6.782,6.774 -6.605,17.634 -0.006,24.225l22.725,22.725c6.587,6.596 17.451,6.789 24.225,0.006l15.694,-15.695c3.568,-3.567 10.991,-6.594 18.244,-2.304z" />
<path
android:fillColor="#FFFFFF"
android:pathData="m256,367.4c-61.427,0 -111.4,-49.974 -111.4,-111.4s49.973,-111.4 111.4,-111.4 111.4,49.974 111.4,111.4 -49.973,111.4 -111.4,111.4zM256,174.6c-44.885,0 -81.4,36.516 -81.4,81.4s36.516,81.4 81.4,81.4 81.4,-36.516 81.4,-81.4 -36.515,-81.4 -81.4,-81.4z" />
</vector>
预览如下
向量 android:icon="@drawable/ic_search2"
<vector android:height="24dp" android:tint="#FFFFFF"
android:viewportHeight="24" android:viewportWidth="24"
android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
<path android:fillColor="@android:color/white" android:pathData="M15.5,14h-0.79l-0.28,-0.27C15.41,12.59 16,11.11 16,9.5 16,5.91 13.09,3 9.5,3S3,5.91 3,9.5 5.91,16 9.5,16c1.61,0 3.09,-0.59 4.23,-1.57l0.27,0.28v0.79l5,4.99L20.49,19l-4.99,-5zM9.5,14C7.01,14 5,11.99 5,9.5S7.01,5 9.5,5 14,7.01 14,9.5 11.99,14 9.5,14z"/>
</vector>
预览是
向量 android:icon="@drawable/ic_reach_us"
<vector android:height="24dp" android:tint="#145979"
android:viewportHeight="24" android:viewportWidth="24"
android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
<path android:fillColor="@android:color/white" android:pathData="M21,12.22C21,6.73 16.74,3 12,3c-4.69,0 -9,3.65 -9,9.28C2.4,12.62 2,13.26 2,14v2c0,1.1 0.9,2 2,2h1v-6.1c0,-3.87 3.13,-7 7,-7s7,3.13 7,7V19h-8v2h8c1.1,0 2,-0.9 2,-2v-1.22c0.59,-0.31 1,-0.92 1,-1.64v-2.3C22,13.14 21.59,12.53 21,12.22z"/>
<path android:fillColor="@android:color/white" android:pathData="M9,13m-1,0a1,1 0,1 1,2 0a1,1 0,1 1,-2 0"/>
<path android:fillColor="@android:color/white" android:pathData="M15,13m-1,0a1,1 0,1 1,2 0a1,1 0,1 1,-2 0"/>
<path android:fillColor="@android:color/white" android:pathData="M18,11.03C17.52,8.18 15.04,6 12.05,6c-3.03,0 -6.29,2.51 -6.03,6.45c2.47,-1.01 4.33,-3.21 4.86,-5.89C12.19,9.19 14.88,11 18,11.03z"/>
</vector>
及其预览，
如第一个图像搜索图标所示，在预览中显示为白色，但是当我 运行 应用程序时，只有 'action_settings' 显示为白色，而 'my_search_bar' 出现在黑色或某种深色和帮助显示在其预览（最后一个图像）中。我希望一切都是白色的。
如您所见，fillColour 的搜索图标和帮助图标在矢量代码中是白色的。我的代码出了什么问题？
编辑：
此外，溢出图标显示为黑色（或某种深色）。它没有显示在我提供的图像中，因为我将 never 替换为 ifRoom。
以下是styles.xml
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.MaterialComponents.Light.NoActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
<item name="actionBarTheme">@style/ThemeOverlay.MaterialComponents.Dark.ActionBar</item>
</style>
<style name="AppTheme.NoActionBar">
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
<item name="colorSurface">@color/colorBorder</item>
</style>
<style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
<style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
<style name="ProgressBarStyle">
<item name="colorAccent">@color/colorAccent</item>
</style>
<style name="DemoTheme" parent="Theme.AppCompat.Light.NoActionBar">
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorOfStatusBar</item>
<item name="colorAccent">@color/colorAccent</item>
</style>
在矢量图标中添加 android:tint="?android:attr/colorForeground" 后出现如下图。
以下是我在矢量代码中添加 android:tint="?android:attr/colorForeground" 的方式。每个图标的预览现在显示黑色。
注意:: 搜索图标不是黑色的，请检查最后一张图片。进行此更改后，设置和帮助图标从白色变为黑色，而搜索图标仍然相同（有点像灰色）
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="24dp"
android:height="24dp"
android:viewportWidth="24"
android:viewportHeight="24"
android:tint="?android:attr/colorForeground">
<path
android:fillColor="@android:color/white"
android:pathData="M15.5,14h-0.79l-0.28,-0.27C15.41,12.59 16,11.11 16,9.5 16,5.91 13.09,3 9.5,3S3,5.91 3,9.5 5.91,16 9.5,16c1.61,0 3.09,-0.59 4.23,-1.57l0.27,0.28v0.79l5,4.99L20.49,19l-4.99,-5zM9.5,14C7.01,14 5,11.99 5,9.5S7.01,5 9.5,5 14,7.01 14,9.5 11.99,14 9.5,14z"/>
</vector>
另请注意，
我在 'HomeActivity' 的 onCreate 中有 setSupportActionBar(binding.toolbarHome)，下面是我的 Toolbar
<androidx.appcompat.widget.Toolbar
android:id="@+id/toolbar_home"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="@drawable/app_gradient_color_background"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
android:layout_gravity="top"
android:theme="@style/AppTheme"
app:titleTextColor="@color/colorWhite"/>
我无法解释为什么当您 运行 应用程序时搜索图标不是白色，但帮助图标显然被标记为蓝色 (android:tint="#145979")。父 vector 元素中的 android:tint 覆盖任何子 path 元素的颜色。
我建议您在所有这些元素的顶级 vector 元素中设置 android:tint="?android:attr/colorForeground"，以便它们可以遵循您的主题。然后，如果您决定将它们设为不同的颜色或有一个 day/night 主题，它们在白天是不同的颜色，您只需在主题中的一个地方更改它，它们将始终与溢出图标匹配颜色.
如果你想在操作栏上使用白色文本和图标，我建议你使用名称中包含 DarkActionBar 的父主题，或者如果你使用 NoActionBar 并在其中包含一个工具栏您设置为支持操作栏的布局，然后使用 DarkActionBar 父级设置 actionBarTheme，例如包括：
<item name="actionBarTheme">@style/ThemeOverlay.MaterialComponents.Dark.ActionBar</item>
这也会使溢出图标变白。
编辑：我意识到只有在布局中使用带有 window 装饰操作栏的主题而不是带有工具栏的 NoActionBar 主题时，以上内容才有效。
帮助图标需要在 XML 中将其色调更改为白色。
来自评论：由于搜索按钮在菜单 XML 中有 actionViewClass，所以它被外部着色了。它使用主题中的 colorOnPrimary 来为其图标着色。因此，除了使用 @style/ThemeOverlay.MaterialComponents.Dark.ActionBar 作为 actionBarTheme，您还必须创建一个自定义操作栏覆盖主题并使用它。
<style name="MyThemeOverlay_Toolbar" parent="ThemeOverlay.MaterialComponents.Toolbar.Primary">
<item name="colorOnPrimary">@color/colorWhite</item>
</style>
<!-- and inside the app theme: -->
<item name="actionBarTheme">@style/MyThemeOverlay_Toolbar</item>
对于搜索图标，尝试更改
android:tint="#FFFFFF"
至
android:tint="#FFFFFFFF"
我不相信有默认的 alpha（就像 HTML 中那样），所以你的色调是白色，但 alpha 为零。