Android - 导航查看项目菜单背景颜色

Question

我尝试更改项目导航视图菜单的颜色:

styles.xml

<item name="android:activatedBackgroundIndicator">@drawable/activated_background</item>

activated_background.xml

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true" android:drawable="@color/White" />
    <item android:state_focused="true" android:drawable="@color/White" />
    <item android:state_activated="true" android:drawable="@color/White" />
    <item android:drawable="@android:color/transparent" />
</selector>

drawer.xml:

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

<group
    android:id="@+id/group_1">
    <item
        android:id="@+id/drawer_menu_account"
        android:checked="false"
        android:title="@string/menu_account"
        android:icon="@drawable/ic_account_grey600_24dp" />
    <item
        android:id="@+id/drawer_menu_my_post"
        android:checked="false"
        android:title="@string/menu_my_post"
        android:icon="@drawable/ic_pin_grey600_24dp" />
</group>
[...]

背景颜色不改变..我做错了什么？

Answer 1

您没有为styles.xml文件中的Navigation View项目的背景设置drawable.打开包含导航视图窗口小部件的XML布局文件,并将以下行添加到窗口小部件的属性中:

app:itemBackground="@drawable/activated_background.xml"

如果您在使用"app"指针时遇到问题,请添加以下行:

xmlns:app="http://schemas.android.com/apk/res-auto"

请注意,这只会更改所选列表项的背景颜色.如果您还想更改图标和文本颜色,请改用该app:itemTextColor属性.

Answer 2

下面的代码适用于
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"/>

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>

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>

Answer 3

您必须使用android：background =“ color”作为导航菜单的背景色，例如：

<android.support.design.widget.NavigationView
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:id="@+id/shitstuff"
        app:itemTextColor="@color/black"
        app:menu="@menu/drawermenu"
        android:background="@color/colorAccent"
        android:layout_marginTop="-24dp"
        />

对于项目颜色，请使用itemTextColor =“ color”