在做项目的时候，需要使用一个侧滑菜单栏：

问题：
1.侧滑菜单的图标全部显示为灰色

menu布局

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

    <group android:checkableBehavior="single">
        <item
            android:id="@+id/nav_camera"
            android:icon="@drawable/personal_mytask_btn"
            android:title="@string/drawer_nav_mytask_str" />
        <item
            android:id="@+id/nav_gallery"
            android:icon="@drawable/personal_mysetting_btn"
            android:title="@string/drawer_nav_mysetting_str" />
        <item
            android:id="@+id/nav_slideshow"
            android:icon="@drawable/personal_myperformance_btn"
            android:title="@string/drawer_nav_myPerformance_str" />
        <item
            android:id="@+id/nav_manage"
            android:icon="@drawable/ic_menu_manage"
            android:title="Tools" />
    </group>

    <item android:title="Communicate">
        <menu>
            <item
                android:id="@+id/nav_share"
                android:icon="@drawable/ic_menu_share"
                android:title="Share" />
            <item
                android:id="@+id/nav_send"
                android:icon="@drawable/ic_menu_send"
                android:title="Send" />
        </menu>
    </item>

</menu>

activity的xml页面布局

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.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">

    <include
        layout="@layout/app_bar_home"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

    <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"
        app:headerLayout="@layout/nav_header_home"
        app:layout_constraintBottom_toBottomOf="parent"
        app:menu="@menu/activity_home_drawer" />

</android.support.v4.widget.DrawerLayout>

代码实现

    nav_view.setNavigationItemSelectedListener(this)
    nav_view.itemIconTintList = null

效果图：

效果图

解决办法：

    nav_view.setNavigationItemSelectedListener(this)
    nav_view.itemIconTintList = null  //显示原始颜色

    //NavigationView设置属性app:itemIconTint为统一颜色