以不同的方式为安卓群组设置背景 - 安卓

Question

我希望某些菜单项具有不同的背景。例如，我希望nav_hesabim的背景是红色的。我希望nav_usersss背景是黄色的。所以我想使用菜单中项目的背景以不同的颜色。我正在使用导航视图。我该怎么做？

activity_main2_drawer

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:showIn="navigation_view">
<group android:checkableBehavior="single"
android:id="@+id/group1">
<item
android:id="@+id/nav_hesabim"
android:icon="@mipmap/avatar"
android:title="@string/menu_hesabim" />
</group>
<group android:checkableBehavior="single"
android:id="@+id/groupsss">
<item
android:id="@+id/nav_usersss"
android:icon="@mipmap/sss3"
android:title="@string/menu_userSss" />
</group>
</menu>

Activity_main2

<?xml version="1.0" encoding="utf-8"?>
<androidx.drawerlayout.widget.DrawerLayout 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:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start"
android:layoutDirection="rtl">
<include
layout="@layout/app_bar_main2"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<com.google.android.material.navigation.NavigationView
android:id="@+id/nav_view"
android:layoutDirection="rtl"
android:layout_width="wrap_content"
android:layout_height="match_parent"
app:itemTextColor="@color/white"
app:itemTextAppearance="@style/NavDrawerTextStyle2"
android:layout_gravity="start"
android:background="@color/NavItem"
android:fitsSystemWindows="true"
android:theme="@style/NavigationView"
app:headerLayout="@layout/nav_header_main2"
app:menu="@menu/activity_main2_drawer" />
</androidx.drawerlayout.widget.DrawerLayout>

主活动

public class Main2Activity extends AppCompatActivity  {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
DrawerLayout drawer = findViewById(R.id.drawer_layout);
NavigationView navigationView = findViewById(R.id.nav_view);
// Passing each menu ID as a set of Ids because each
// menu should be considered as top level destinations.
mAppBarConfiguration = new AppBarConfiguration.Builder(
R.id.nav_hesabim, R.id.nav_usersss,R.id.nav_passs, R.id.nav_mutlakaoku,
R.id.nav_productusage, R.id.nav_message, R.id.nav_productprices,R.id.nav_antrenmanpr,R.id.nav_beslenmepr,R.id.nav_buyinglist,R.id.nav_gelisimupload,R.id.nav_duyuru,R.id.nav_makaleNew,R.id.nav_instagram,R.id.nav_kafein,R.id.nav_BMI)
.setDrawerLayout(drawer)
.build();
NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
NavigationUI.setupActionBarWithNavController(this, navController, mAppBarConfiguration);
NavigationUI.setupWithNavController(navigationView, navController);
}

Answer 1

下面的代码对我来说很好用 我的导航视图：-

<android.support.design.widget.NavigationView
android:id="@+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
android:background="@color/nav.background"
app:menu="@menu/menu_drawer"
app:itemBackground="@drawable/nav_item_background"
app:itemTextColor="@drawable/nav_item_text"/>

可绘制/nav_item_background.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" android:drawable="@color/nav.item.background" />
<item android:state_checked="true" android:drawable="@color/nav.item.background" />
<item android:state_focused="true" android:drawable="@color/nav.item.background" />
<item android:state_activated="true" android:drawable="@color/nav.item.background" />
<item android:drawable="@color/nav.item.background.default" />
</selector>

可绘制/nav_item_text.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:color="@android:color/white" android:state_checked="true" />
<item android:color="#bdbdbd" />
</selector>

谢谢。