Android-更改图标颜色和每个标签底部导航的标题 [英] Android - Change color of icon and title of each tab bottom navigation
问题描述
我正在尝试使底部导航有些棘手。
实际上,我想要这种底部导航:
每个选项卡在使用时都有不同的颜色它被选中。例如,小节在选中时将显示为红色(图标和标题),而配置文件在选中时将显示为绿色...
因此,我尝试对每个项目(在菜单中)使用选择器
但未应用颜色。图标更改成功(选择一个项目时,我尝试放置一个完全不同的图标),但未更改选项卡标题的颜色。
我尝试从底部导航中删除2个属性:
I'm trying to make a bottom navigation a bit tricky.
Indeed I want this kind of bottom navigation :
Each tab has a different color when it is selected. For example measure will be in red when selected (icon and title) and profile will be green when selected...
So I tried to use a selector per item (in my menu)
But the color is not applied. The icon change successfully (I tried to put a completely different icon when an item is selected) but not the color of the title of the tab.
I tried to remove 2 properties from my bottom navigation :
app:itemTextColor="@color/black"
app:itemIconTint="@color/black"
但是,由于选择了选项卡时,主题应用程序的颜色(主色)被应用,因此情况变得越来越糟。
But it's getting worse because the color of my theme app (primary) is applied when a tab is selected.
我的底部导航:
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="@+id/bottom_navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/white"
app:menu="@menu/main_bottom_navigation"
style="@style/BottomNavigationView"
app:labelVisibilityMode="labeled"
android:layout_alignParentBottom="true" />
我的选择器之一(逻辑应用于所有项目):
One of my selector (logic applied to all items):
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<!-- Pressed state -->
<item android:drawable="@drawable/bottom_bar_journal_on"
android:color="@color/red_FF623E"
android:state_checked="true"/>
<!-- Default state -->
<item android:drawable="@drawable/bottom_bar_journal_off"
android:color="@color/background_yellow"
android:state_checkable="false"/>
</selector>
我的菜单(应用所有选择器的地方):
And my menu (where I apply all of my selector) :
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="@+id/action_journal"
android:enabled="true"
android:icon="@drawable/bottom_bar_journal"
android:title="@string/main_menu_journal"
app:showAsAction="withText" />
<item
android:id="@+id/action_measure"
android:enabled="true"
android:icon="@drawable/bottom_bar_measure_off"
android:title="@string/main_menu_measure"
app:showAsAction="withText" />
<item
android:id="@+id/action_add"
android:enabled="false"
android:title=""
app:showAsAction="withText" />
<item
android:id="@+id/action_treatment"
android:enabled="true"
android:icon="@drawable/bottom_bar_treatment_off"
android:title="@string/main_menu_treatment" />
<item
android:id="@+id/action_profile"
android:enabled="true"
android:icon="@drawable/bottom_bar_profile"
android:title="@string/main_menu_profile"
app:showAsAction="withText" />
</menu>
推荐答案
,您可以在BottomNavigationView上这样使用它:
And you would use it like this on your BottomNavigationView:
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="@+id/bottom_navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/white"
app:itemIconTint="@drawable/bottom_navigation_colors"
app:itemTextColor="@drawable/bottom_navigation_colors"
app:menu="@menu/bottom_navigation_menu" />
app:itemIconTint 和 app:itemTextColor >采用ColorStateList而不是简单的颜色。这意味着您可以为这些颜色编写一个选择器,以响应项目的状态更改。
The app:itemIconTint and app:itemTextColor take a ColorStateList instead of a simple color. This means that you can write a selector for these colors that responds to the items’ state changes.
例如,您可以具有 bottom_navigation_colors.xml 包含以下内容的ColorStateList:
For example, you could have a bottom_navigation_colors.xml ColorStateList that contains:
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:state_checked="true"
android:color="@color/colorPrimary" />
<item
android:state_checked="false"
android:color="@color/grey" />
</selector>
使用彩色材料样式
style="@style/Widget.MaterialComponents.BottomNavigationView.Colored"
也请查看此链接:动手使用材料组件
也可以通过编程方式更改颜色,例如:
Also change colour by programmatically like this:
getMenuInflater().inflate(R.menu.menu_home, menu);
Drawable drawable = menu.findItem(R.id.action_clear).getIcon();
drawable = DrawableCompat.wrap(drawable);
DrawableCompat.setTint(drawable, ContextCompat.getColor(this,R.color.textColorPrimary));
menu.findItem(R.id.action_clear).setIcon(drawable);
return true;
或:
bottomNavigationView.setOnNavigationItemSelectedListener(
new BottomNavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem item) {
switch (item.getItemId()) {
case R.id.action_favorites:
//need change color of favotites here.
case R.id.action_schedules:
case R.id.action_music:
}
return true;
}
});
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