Table of contents
1. Effect
2. Code implementation
Just use uni.setTabBarBadge and uni.removeTabBarBadge to set and remove the red dot.
Main code:
//设置红点
uni.setTabBarBadge({
index: 1, // 底部菜单栏的索引（从0开始）
text:'99', // 要显示的文本（必须是字符串类型）
});
//移除红点
uni.removeTabBarBadge({
index: 1 // 底部菜单栏的索引（从0开始）
});
2. All codes
注意： Add the following code to both 使用页面 and to ensure that you can directly See if there are red dots on the connections. 首页
1.index.vue
Home page
<script>
export default {
data() {
return {
tabBarNum: '' //底部消息数量
}
},
onLoad() {
this.footMsgFun() //调用底部方法
},
onShow() {
this.footMsgFun() //调用底部方法
},
methods: {
//底部：人脉红点显示
footMsgFun() {
var that = this
this.$api.appPlateForm('POST', this.$url.all_message, '', function(res) {
if (res.code == '200') {
//1.获取到接口里，消息的数量
that.tabBarNum = res.data.num
//2.关键代码：设置红点
if (that.tabBarNum > 0) {
//设置底部消息通知
uni.setTabBarBadge({
index: 1, // 人脉页面在底部菜单栏的索引
text: String(that.tabBarNum), // 要显示的文本（必须是字符串类型）
});
} else {
//移除底部消息通知
uni.removeTabBarBadge({
index: 1 // 人脉页面在底部菜单栏的索引
});
}
}
})
},
}
}
</script>
2.cart.view
Shopping cart page
<script>
export default {
data() {
return {
tabBarNum: '' //底部消息数量
}
},
onLoad() {
this.footMsgFun() //调用底部方法
},
onShow() {
this.footMsgFun() //调用底部方法
},
methods: {
//底部：人脉红点显示
footMsgFun() {
var that = this
this.$api.appPlateForm('POST', this.$url.all_message, '', function(res) {
if (res.code == '200') {
//1.获取到接口里，消息的数量
that.tabBarNum = res.data.num
//2.关键代码：设置红点
if (that.tabBarNum > 0) {
//设置底部消息通知
uni.setTabBarBadge({
index: 1, // 人脉页面在底部菜单栏的索引
text: String(that.tabBarNum), // 要显示的文本（必须是字符串类型）
});
} else {
//移除底部消息通知
uni.removeTabBarBadge({
index: 1 // 人脉页面在底部菜单栏的索引
});
}
}
})
},
}
}
</script>
3. Real cases
onLoad() {
this.getCartData();
},
onShow() {
this.getCartData();
},
mounted() {
this.getCartData();
},
methods: {
getCartData() {
let self = this;
self.isloadding = true;
self._get('index/index', {
url: self.url
}, function(res) {
self.cart_total_num = res.data.cart_total_num;
if (self.cart_total_num > 0) {
uni.setTabBarBadge({
index: 3,
text: String(self.cart_total_num),
});
} else {
uni.removeTabBarBadge({
index: 3
});
}
});
},
}
reference
Official website
Please use this guy for reference
at last
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