小程序根据不同角色显示不同的tabbar,除了用自定义tabbar,还有其他方法吗
除了自定义tabbar,还有另一种方法可以根据不同角色显示不同的tabbar,这就只能使用条件渲染了
条件渲染指的是在小程序界面中,根据特定条件为页面元素设置不同的属性值。你可以使用条件渲染来为不同角色的用户显示不同的tabbar。具体实现步骤如下:
App({
globalData: {
role: ''
}
})
wx.login({
success: (res) => {
// 发送请求获取用户信息和角色信息
wx.request({
url: 'xxx',
method: 'GET',
success: (res) => {
// 将当前用户的角色信息存储到globalData中
getApp().globalData.role = res.data.role
}
})
}
})
{
"tabBar": {
"custom": true,
"list": [
{
"pagePath": "pages/index/index",
"iconPath": "images/home.png",
"selectedIconPath": "images/home-active.png",
"text": "首页"
},
{
"pagePath": "pages/cart/cart",
"iconPath": "images/cart.png",
"selectedIconPath": "images/cart-active.png",
"text": "购物车"
},
{
"pagePath": "pages/profile/profile",
"iconPath": "images/user.png",
"selectedIconPath": "images/user-active.png",
"text": "我的"
}
]
}
}
const role = getApp().globalData.role
function getTabBar() {
if (role === 'admin') {
return {
"backgroundColor": "#fff",
"color": "#000",
"selectedColor": "#000",
"borderStyle": "#eee",
"list": [
{
"pagePath": "pages/index/index",
"iconPath": "images/home.png",
"selectedIconPath": "images/home-active.png",
"text": "首页"
},
{
"pagePath": "pages/cart/cart",
"iconPath": "images/cart.png",
"selectedIconPath": "images/cart-active.png",
"text": "购物车"
},
{
"pagePath": "pages/orders/orders",
"iconPath": "images/orders.png",
"selectedIconPath": "images/orders-active.png",
"text": "订单"
},
{
"pagePath": "pages/profile/profile",
"iconPath": "images/user.png",
"selectedIconPath": "images/user-active.png",
"text": "我的"
}
]
}
} else {
return {
"backgroundColor": "#fff",
"color": "#000",
"selectedColor": "#000",
"borderStyle": "#eee",
"list": [
{
"pagePath": "pages/index/index",
"iconPath": "images/home.png",
"selectedIconPath": "images/home-active.png",
"text": "首页"
},
{
"pagePath": "pages/cart/cart",
"iconPath": "images/cart.png",
"selectedIconPath": "images/cart-active.png",
"text": "购物车"
},
{
"pagePath": "pages/profile/profile",
"iconPath": "images/user.png",
"selectedIconPath": "images/user-active.png",
"text": "我的"
}
]
}
}
}
{
"navigationBarTitleText": "首页",
"usingComponents": {},
"tabBar": {{getTabBar()}}
}
通过以上步骤,你可以根据不同角色显示不同的tabbar,而无需使用自定义tabbar。需要注意的是,使用条件渲染的方式可能需要在不同页面中重复定义getTabBar()函数,这可能会增加一些代码的复杂度