這個問題困擾了我一個多小時，尷尬。

問題是這個樣子的倘潜，每個界面都能打開側(cè)邊:

問題.gif

路由代碼:

const NavHome = StackNavigator({
    welcome: {
        screen: WelcomeScreen,
        navigationOptions: {
            header: null
        }

    },
    home: {
        screen: HomeScreen,
        navigationOptions: {
            header: null
        }
    },
    login: {
        screen: LoginScreen,
        navigationOptions: {
            header: null
        }
    },
    system_datail: {
        screen: SystemDetailScreen,
        navigationOptions: {
            header: null
        }
    },
    article_detail: {
        screen: ArticleDetailSceen,
        navigationOptions: {
            header: null
        }
    },
    search: {
        screen: SearchScreen,
        navigationOptions: {
            header: null
        }
    },
    search_result: {
        screen: SearchResultScreen,
        navigationOptions: {
            header: null
        }
    },
    theme: {
        screen: ThemeScreen,
        navigationOptions: {
            header: null
        }
    },
    about: {
        screen: AboutScreen,
        navigationOptions: {
            header: null
        }
    }
},{
    initialRouteName: 'welcome',
    navigationOptions: ({navigation, screenProps}) => ({
        gesturesEnabled: true,
    }),
}
)


const RootNavigator = DrawerNavigator(
    {
        home: {
            screen: NavHome,
        }
       
    },
    {
        drawerWidth: 260,
        drawerPosition: 'left',
        contentComponent: UserDrawer,
        contentOptions:{
            initialRouteName:'home'
        }
    }
)

export default RootNavigator 

百度搜索了下意蛀，沒有搜索到解決方案，倒是搜到了和我一樣的問題夺饲，估計是我的搜索姿勢不對奸汇。
不過在一個問題的評論當中，有一個評論大概意思是說:DrawerNavigator嵌套StackNavigator是一個全局的drawer往声。
我剛開始沒有反應(yīng)過來擂找，后來找不到解決方案，就想了會浩销，才想到這句話中的全局二字贯涎，然后就想著把它變成一個局部的不就行了。

解決如下：

const homeDrawer = DrawerNavigator(
    {
        home: {
            screen: HomeScreen, // 重點這里<--------------------------------------------------
        }
       
    },
    {
        drawerWidth: 260,
        drawerPosition: 'left',
        contentComponent: UserDrawer,
        contentOptions:{
            initialRouteName:'home'
        }
    }
)


const NavHome = StackNavigator({
    welcome: {
        screen: WelcomeScreen,
        navigationOptions: {
            header: null
        }

    },
    home: {
        screen: homeDrawer, // 還有這里 <-----------------------------------------------------------
        navigationOptions: {
            header: null
        }
    },
    login: {
        screen: LoginScreen,
        navigationOptions: {
            header: null
        }
    },
    system_datail: {
        screen: SystemDetailScreen,
        navigationOptions: {
            header: null
        }
    },
    article_detail: {
        screen: ArticleDetailSceen,
        navigationOptions: {
            header: null
        }
    },
    search: {
        screen: SearchScreen,
        navigationOptions: {
            header: null
        }
    },
    search_result: {
        screen: SearchResultScreen,
        navigationOptions: {
            header: null
        }
    },
    theme: {
        screen: ThemeScreen,
        navigationOptions: {
            header: null
        }
    },
    about: {
        screen: AboutScreen,
        navigationOptions: {
            header: null
        }
    }
},{
    initialRouteName: 'welcome',
    navigationOptions: ({navigation, screenProps}) => ({
        gesturesEnabled: true,
    }),
}
)


export default NavHome  // 返回  <-------------------------------------------------------

修改結(jié)果：

結(jié)果.gif

都是自己對react-navigation不熟悉慢洋，造成的結(jié)果塘雳，算是收獲了一些經(jīng)驗，也分享給大家普筹。
總結(jié)一句話：react-navigation多注意嵌套關(guān)系败明。