[英]Change the icon color in a BottomNavigationView
I want to change the color of the drawables used in a BottomNavigationView
but the changes I've made don't seem to make a difference.我想更改
BottomNavigationView
中使用的可绘制对象的颜色,但我所做的更改似乎并没有什么不同。
I've tried to use the android:iconTint
in the menu resource and changed the color in the vector XML file but neither seemed to work.我尝试在菜单资源中使用
android:iconTint
并更改矢量 XML 文件中的颜色,但似乎都不起作用。
icon.xml :
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="24dp"
android:height="24dp"
android:viewportWidth="24"
android:viewportHeight="24">
<path
android:fillColor="@color/secondary"
android:pathData="M4.5,8c1.04,0 2.34,-1.5 4.25,-1.5c1.52,0 2.75,1.23 2.75,2.75c0,2.04 -1.99,3.15 -3.91,4.22C5.42,14.67 4,15.57 4,17c0,1.1 0.9,2 2,2v2c-2.21,0 -4,-1.79 -4,-4c0,-2.71 2.56,-4.14 4.62,-5.28c1.42,-0.79 2.88,-1.6 2.88,-2.47c0,-0.41 -0.34,-0.75 -0.75,-0.75C7.5,8.5 6.25,10 4.5,10C3.12,10 2,8.88 2,7.5C2,5.45 4.17,2.83 5,2l1.41,1.41C5.41,4.42 4,6.43 4,7.5C4,7.78 4.22,8 4.5,8zM8,21l3.75,0l8.06,-8.06l-3.75,-3.75L8,17.25L8,21zM20.37,6.29c-0.39,-0.39 -1.02,-0.39 -1.41,0l-1.83,1.83l3.75,3.75l1.83,-1.83c0.39,-0.39 0.39,-1.02 0,-1.41L20.37,6.29z"/>
</vector>
botton_nav_menu.xml :
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="@+id/miHome"
android:icon="@drawable/ic_library_books"
android:title="Home"
/>
<item
android:id="@+id/miMusic"
android:icon="@drawable/ic_library_music"
android:iconTint="@color/secondary"
android:iconTintMode="add"
android:title="Music" />
<item
android:id="@+id/miPlacehoder"
android:title="" />
<item
android:id="@+id/miCatalogue"
android:icon="@drawable/ic_catalogue"
android:title="Catalogue" />
<item
android:id="@+id/miWriter"
android:icon="@drawable/ic_write"
android:title="Writer" />
</menu>
main_activity.xml :
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.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"
tools:context=".MainActivity"
android:background="@color/white">
<com.google.android.material.bottomappbar.BottomAppBar
android:id="@+id/bottomAppBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:backgroundTint="@color/primary">
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="@+id/bottomNavigationView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginEnd="16dp"
android:background="@android:color/transparent"
app:elevation="0dp"
app:menu="@menu/bottom_nav_menu"
android:layout_marginRight="16dp">
</com.google.android.material.bottomnavigation.BottomNavigationView>
</com.google.android.material.bottomappbar.BottomAppBar>
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:backgroundTint="@color/secondary"
android:src="@drawable/ic_add"
app:layout_anchor="@id/bottomAppBar"/>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
The icon tint for a BottomNavigationView
is controlled by the app:itemIconTint
attribute, not the tint specified in your menu or drawable resource. BottomNavigationView
的图标色调由app:itemIconTint
属性控制,而不是在菜单或可绘制资源中指定的色调。
So you should have something like this:所以你应该有这样的东西:
<com.google.android.material.bottomnavigation.BottomNavigationView
...
app:itemIconTint="@color/navigation_icon_tint" />
If you wanted the colour to change depending on whether it was selected you should use a selector with a checked state instead of a static colour:如果您希望颜色根据是否被选中而改变,您应该使用带有选中 state 而不是 static 颜色的选择器:
<selector>
<item android:state_checked="true" android:color="..." />
<item android:color="..." />
</selector>
For future reference, you can always read about the material components in the documentation at material.io which should cover everything relating to styling and usage.为了将来参考,您始终可以在material.io的文档中阅读有关材料组件的信息,该文档应涵盖与样式和使用相关的所有内容。
if you want to change the color of icon and vector you can change from如果你想改变图标和矢量的颜色,你可以从
app:itemIconTint="@color/navigation_icon_tint"
And if you want to change the selected icon color on bottom navigation than use this如果您想更改底部导航上选定的图标颜色而不是使用这个
selector_min_home name
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="Your Deafault drawable" android:state_checked="false"/>
<item android:drawable="Your Selected Drawable" android:state_checked="true"/>
</selector>
and set this into并将其设置为
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="@+id/miHome"
android:icon="@drawable/selector_min_home "
android:title="Home"
/>
....
</menu>
You can change vector icon color directly from icon.xml:您可以直接从 icon.xml 更改矢量图标颜色:
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="24dp"
android:height="24dp"
android:viewportWidth="24"
android:viewportHeight="24">
<path
android:fillColor="@color/navigation_icon_tint"
android:pathData="M4.5,8c1.04,0 2.34,-1.5 4.25,-1.5c1.52,0 2.75,1.23 2.75,2.75c0,2.04 -1.99,3.15 -3.91,4.22C5.42,14.67 4,15.57 4,17c0,1.1 0.9,2 2,2v2c-2.21,0 -4,-1.79 -4,-4c0,-2.71 2.56,-4.14 4.62,-5.28c1.42,-0.79 2.88,-1.6 2.88,-2.47c0,-0.41 -0.34,-0.75 -0.75,-0.75C7.5,8.5 6.25,10 4.5,10C3.12,10 2,8.88 2,7.5C2,5.45 4.17,2.83 5,2l1.41,1.41C5.41,4.42 4,6.43 4,7.5C4,7.78 4.22,8 4.5,8zM8,21l3.75,0l8.06,-8.06l-3.75,-3.75L8,17.25L8,21zM20.37,6.29c-0.39,-0.39 -1.02,-0.39 -1.41,0l-1.83,1.83l3.75,3.75l1.83,-1.83c0.39,-0.39 0.39,-1.02 0,-1.41L20.37,6.29z"/>
</vector>
And also using tint..并且还使用色调..
<vector
...
android:tint="@color/navigation_icon_tint">
...
</vector>
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