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uniapp全局弹窗(APP端)

uniapp自带的提示框不符合我们的要求，需要自己写一个提示框，且全局通用。

解决思路: 使用 plus.nativeObj 来绘制窗口以及事件监听。 官方文档

  1. 首先创建一个整个屏幕的控件，作为一个父容器。 此时还看不到任何东西
let screenHeight = uni.getSystemInfoSync().screenHeight;
let style = {
    width:'100%',
    height: (screenHeight + 'px'),
    left:'0px',
    top:'0px'
};

// 创建原生控件对象
// 参数1: id
// 参数2: 控件的样式
let view = new plus.nativeObj.View('showModalView',style);
  1. 绘制遮罩层
view.draw([
    {tag:'rect',id:'modal',color:`rgba(0,0,0,0.4)`,position:{top:'0px',left:'0px',width:'100%',height:'100%'}}
]);

{
    tag:'rect',                        // 绘制矩形
    id:'modal',                        // 控件id
    color:`rgba(0,0,0,0.4)`,            // 背景色
    position:{top:'0px',left:'0px',width:'100%',height:'100%'}        // 位置和大小样式
}

view.draw(tags); 在控件上绘制，传入绘制对象。

绘制对象文档 可绘制图片、矩形区域、文本等内容。

3.绘制通知框样式

view.draw([
    {tag:'rect',id:'modal',color:`rgba(0,0,0,0.4)`,position:{top:'0px',left:'0px',width:'100%',height:'100%'}},
    {tag:'rect',id:'content',rectStyles:{borderWidth:'2px',radius:'8px',color:`rgba(36,34,56,1)`},position:{top:startTop+'px',left:startLeft+'px',width:width+'px',height:height+'px'}},
]);

{
    tag:'rect',
    id:'content',
    // 矩形的样式
    rectStyles:{borderWidth:'2px',radius:'8px',color:`rgba(36,34,56,1)`},
    // 位置和大小. 下面的变量是根据屏幕宽高手动计算的
    position:{top:startTop+'px',left:startLeft+'px',width:width+'px',height:height+'px'}
}

interface RectStyles {
    attribute String color;
    attribute String radius;
    attribute String borderColor;
    attribute String borderWidth;
}
  1. 绘制标题和内容
view.draw([
    {tag:'rect',id:'modal',color:`rgba(0,0,0,0.4)`,position:{top:'0px',left:'0px',width:'100%',height:'100%'}},
    {tag:'rect',id:'content',rectStyles:{borderWidth:'2px',radius:'8px',color:`rgba(36,34,56,1)`},position:{top:startTop+'px',left:startLeft+'px',width:width+'px',height:height+'px'}},
    {tag:'font',id:'title',text:modelInfo.tit,textStyles:{size:'16px',color:'#fff'},position:{top:titleTop+'px',left:startLeft+'px',width:width+'px',height:titleHeight+'px'}},
    {tag:'font',id:'text',text:modelInfo.content,textStyles:{size:'14px',color:'#fff',whiteSpace:'normal',align:modelInfo.align},position:{top:contentTop+'px',left:startLeft+'px',width:width+'px',height:contentHeight+'px'}},
    // 这个是内容和底部按钮的分割线
    {tag:'rect',id:'line',color:'rgba(255,255,255,0.3)',position:{top:lineTop+'px',left:startLeft+'px',width:width+'px',height:'0.5px'}},
]);

{
    tag:'font',                    // 绘制文字
    id:'title',
    text:modelInfo.tit,            // 文字内容
    textStyles:{size:'16px',color:'#fff'},
    position:{top:titleTop+'px',left:startLeft+'px',width:width+'px',height:titleHeight+'px'}
},
  1. 创建确认按钮控件

我们需要给确认按钮设置点击事件，所以它要作为一个新的控件，而不是再刚刚的控件上继续绘制。

// 确认
let viewconfirm=new plus.nativeObj.View('confirm',
    {
        width:modelInfo.delCancel?width+'px':'40%',
        height:buttonHeight+'px',
        top:lineTop+'px',
        left:modelInfo.delCancel?startLeft+'px':halfWidthForGlobal +'px',
        backgroundColor:'rgba(255,255,255,0)',
    },
);
viewconfirm.draw([
    {tag:'font',id:'confirm',text:modelInfo.confirmVal,textStyles:{color:modelInfo.confirmColor,size:'14px'}},
]);

设置点击事件

viewconfirm.addEventListener("click",(e)=>{
    // 发送事件
    this.$event({res:true,types:'confirm'});
    // 隐藏当前控件(关闭)
    this.hide();
},false);

将 viewconfirm和view显示出来:

function show(){
    this.view.show();
    this.confirmModel.show();
}

下面就是将这些挂载到Uni上就可以了。

下面是项目中的完整代码:

index.js 用于绘制

// show_modal/index.js
export class show_model{
    constructor(option={}) {
        this.bodyModel=null;
        this.cancelModel=null;
        this.confirmModel=null;
        this.pageHeight=uni.getSystemInfoSync().screenHeight;
        this.pageWidth = uni.getSystemInfoSync().screenWidth;
        let opacity = option.opacity || 0.4;
        let model_tit=option.title||'温馨提示';
        let model_content=option.content||"内容"
        let clickEvent=option.IsclickEvent||false;
        let cancelVal=option.cancelVal||'取消';
        let confirmVal=option.confirmVal||'确认';
        let cancelColor=option.cancelColor||'#fff';                // 取消
        let confirmColor=option.confirmColor||'#fff';            // 确认
        let delCancel=option.delCancel||false;
        let align=option.align||"center";
        let fn = ()=>{};
        this.$event = option.$event || fn;
        let backOff=option.backOff||false;
        
        //#ifdef APP-PLUS
        this.creatView({height:`${this.pageHeight}px`,top:0},opacity,clickEvent,{'tit':model_tit,'content':model_content,cancelVal,confirmVal,confirmColor,cancelColor,delCancel,align})
        if(!backOff){
            this.backbtn();
        }
        //#endif
    }
    backbtn(){
        let that=this;
        plus.key.addEventListener('backbutton', function (e) {
            that.hide();
        },false)
    }
    //生成提示框view
    creatView(style,opa,clickEvent,modelInfo){
        style = {
            left:'0px',
            width:'100%',
            ...style
        }
        let platform = plus.os.name.toLowerCase();
        let view = new plus.nativeObj.View('showModalView',style);
        
        let width = 300;
        let height = 150;
        let titleHeight = 20;
        let contentHeight = 60;
        let startTop = (this.pageHeight - height) / 2;
        let startLeft = (this.pageWidth - width) / 2;
        let titleTop = startTop + 10;
        let contentTop = titleTop+30;
        let lineTop = startTop + height - 40;
        let buttonHeight = 40;
        let halfWidth = width / 2;
        let halfWidthForGlobal = startLeft + halfWidth;
        
        if(platform == "ios"){
            view.draw([
                {tag:'rect',id:'modal',color:`rgba(0,0,0,${opa})`,position:{top:'0px',left:'0px',width:'100%',height:'100%'}},
                {tag:'rect',id:'content',rectStyles:{borderWidth:'2px',radius:'8px',color:`rgba(36,34,56,1)`},position:{top:startTop+'px',left:startLeft+'px',width:width+'px',height:height+'px'}},
                {tag:'font',id:'title',text:modelInfo.tit,textStyles:{size:'16px',color:'#fff'},position:{top:titleTop+'px',left:startLeft+'px',width:width+'px',height:titleHeight+'px'}},
                {tag:'font',id:'text',text:modelInfo.content,textStyles:{size:'14px',color:'#fff',whiteSpace:'normal',align:modelInfo.align},position:{top:contentTop+'px',left:startLeft+'px',width:width+'px',height:contentHeight+'px'}},
                {tag:'rect',id:'line',color:'rgba(255,255,255,0.3)',position:{top:lineTop+'px',left:startLeft+'px',width:width+'px',height:'0.5px'}},
                {tag:'rect',id:'line2',color:'rgba(255,255,255,0.3)',position:{top:lineTop+'px',left:+halfWidthForGlobal+'px',width:modelInfo.delCancel?'0px':'0.5px',height:modelInfo.delCancel?'0px':buttonHeight+'px'}}
            ]);
        }else{
            view.draw([
                {tag:'rect',id:'modal',color:`rgba(0,0,0,${opa})`,position:{top:'0px',left:'0px',width:'100%',height:'100%'}},
                {tag:'rect',id:'content',rectStyles:{borderWidth:'2px',radius:'8px',color:`rgba(36,34,56,1)`},position:{top:startTop+'px',left:startLeft+'px',width:width+'px',height:height+'px'}},
                {tag:'font',id:'title',text:modelInfo.tit,textStyles:{size:'16px',color:'#fff'},position:{top:titleTop+'px',left:startLeft+'px',width:width+'px',height:titleHeight+'px'}},
                {tag:'font',id:'text',text:modelInfo.content,textStyles:{size:'14px',color:'#fff',whiteSpace:'normal',align:modelInfo.align},position:{top:contentTop+'px',left:startLeft+'px',width:width+'px',height:contentHeight+'px'}},
                {tag:'rect',id:'line',color:'rgba(255,255,255,0.3)',position:{top:lineTop+'px',left:startLeft+'px',width:width+'px',height:'0.5px'}},
                {tag:'rect',id:'line2',color:'rgba(255,255,255,0.3)',position:{top:lineTop+'px',left:halfWidthForGlobal+'px',width:modelInfo.delCancel?'0px':'0.5px',height:modelInfo.delCancel?'0px':buttonHeight+'px'}}
            ]);
        }
        
        var num = 0.55;
        if(platform == "ios"){
            num = 0.57
        }
        if(!modelInfo.delCancel){
            // 取消    
            let viewCancel=new plus.nativeObj.View('cancel',{width:halfWidth+'px',height:buttonHeight+'px',top:lineTop+'px',left:startLeft+'px',backgroundColor:'rgba(255,255,255,0)'});
                viewCancel.draw([
                  {tag:'font',id:'cancel',text:modelInfo.cancelVal,textStyles:{color:modelInfo.cancelColor,size:'14px'}},
                ]);
                
                viewCancel.addEventListener("click",(e)=>{
                    this.$event({res:false,types:'cancel'});
                    this.hide();
                },false);
                this.cancelModel=viewCancel;
        }
        // 确认
        let viewconfirm=new plus.nativeObj.View('confirm',
            {
                width:modelInfo.delCancel?width+'px':'40%',
                height:buttonHeight+'px',
                top:lineTop+'px',
                left:modelInfo.delCancel?startLeft+'px':halfWidthForGlobal +'px',
                backgroundColor:'rgba(255,255,255,0)',
            },
        );
        viewconfirm.draw([
            {tag:'font',id:'confirm',text:modelInfo.confirmVal,textStyles:{color:modelInfo.confirmColor,size:'14px'}},
        ]);
    
        viewconfirm.addEventListener("click",(e)=>{
            this.$event({res:true,types:'confirm'});
            this.hide();
        },false);
          //点击蒙布
        if(clickEvent){
             view.addEventListener("click", (e) => {
                this.$event({res:false,types:'cover'});
                this.hide();
            }, false);
        }
       this.bodyModel=view;
       this.confirmModel=viewconfirm;
    }
    showModalAnimationClose(){
        var options = {type:'pop-out',duration:300};
            plus.nativeObj.View.startAnimation(options,{view:this.bodyModel},{view:this.cancelModel},{view:this.viewconfirm},function(){
                console.log('plus.nativeObj.View.startAnimation动画结束');
                // 关闭原生动画
                plus.nativeObj.View.clearAnimation();
            });
    }
    showModalAnimationOpen(){
        var options = {type:'pop-in',duration:1000};
        
            plus.nativeObj.View.startAnimation(options,{view:this.bodyModel},{view:this.cancelModel},{view:this.viewconfirm},function(){
                console.log('plus.nativeObj.View.startAnimation动画结束');
                // 关闭原生动画
                plus.nativeObj.View.clearAnimation();
            });
    }
    show(){
        this.showModalAnimationOpen();
        this.bodyModel.show();
        if(this.cancelModel){
            this.cancelModel.show();
        }
        this.confirmModel.show();
    
    }
    hide(){
        this.showModalAnimationClose();
        this.bodyModel.hide();
        if(this.cancelModel){
          this.cancelModel.hide();    
        }
        this.confirmModel.hide();
    }
}

export default show_model

show_modal.js: 用于创建promise对象并挂载

// show_modal/xt_show_modal.js
import show_modal from './index.js'

const xt_show_modal = {
    install: function(Vue) {
        const show_modal_fun=function(op={}){
            //#ifdef APP-PLUS
            return    new Promise((resolve, reject)=>{
               let ssm=new show_modal({
                    ...op,
                    $event:function(e){
                        if(e.res){
                            resolve(e);
                        }else{
                            reject(e);
                        }
                     }
                })；
                ssm.show();
                Vue.prototype.$hide=function(){
                    ssm.hide();
                }
            })
            //#endif
            
            // 适应H5
            //#ifdef H5
                var promise=uni.showModal({
                    title: op.title,
                    content: op.content,
                    showCancel: !op.delCancel,
                    cancelText: op.cancelVal,
                    confirmText: op.confirmVal,
                });
                
                return new Promise((resolve,reject)=>{
                    promise.then(data=>{
                        var [err, res] = data;
                        if(res.confirm){
                            resolve()
                        }else{
                            reject();
                        }
                    })
                })
                
            //#endif
            
        }
        // $showModal挂载到uni对象上
        uni.$showModal = show_modal_fun
        Vue.prototype.$showModal = show_modal_fun
    }
};

export default xt_show_modal;

main.js中挂载

// 自定义showModal组件
import xt_show_modal from '@/component/show_modal/xt_show_modal.js'
Vue.use(xt_show_modal);

使用:

// showModel的使用
uni.$showModal({
    title:"",                //可选,不填则不显示
    content:'未知错误，请联系管理员！',
    delCancel: true,
    confirmVal: '知道了',    // 可选
    cancelVal:'取消',        // 可选
}).then(res=>{
    // 点击确认按钮点击事件
}).catch(res=>{
    // 点击取消按钮点击事件
});
标签： html javascript 前端
本文转载自: https://blog.csdn.net/qq_18594435/article/details/126073115
版权归原作者 被猫吃的竹子 所有， 如有侵权，请联系我们删除。
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