uniapp App自定义弹窗

先看效果图：

第一步在utils文件夹新建modal文件夹再新建index.js当然也可以不放在该文件夹下，自定义

index.js代码如下：

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||'#999';             // 取消
        let confirmColor=option.confirmColor||'#333';           // 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,${opa})`,position:{top:'0px',left:'0px',width:'100%',height:'100%'}},
                {tag:'rect',id:'content',rectStyles:{borderWidth:'2px',radius:'8px',color:`#fff`,backgroundColor:'#fff'},position:{top:startTop+'px',left:startLeft+'px',width:width+'px',height:height+'px'}},
                {tag:'font',id:'title',text:modelInfo.tit,textStyles:{size:'16px',color:'#333'},position:{top:titleTop+'px',left:startLeft+'px',width:width+'px',height:titleHeight+'px'}},
                {tag:'font',id:'text',text:modelInfo.content,textStyles:{size:'14px',color:'#333',whiteSpace:'normal',align:modelInfo.align},position:{top:contentTop+'px',left:startLeft+'px',width:width+'px',height:contentHeight+'px'}},
                {tag:'rect',id:'line',color:'#999',position:{top:lineTop+'px',left:startLeft+'px',width:width+'px',height:'0.5px'}},
                {tag:'rect',id:'line2',color:'#999',position:{top:lineTop+'px',left:+halfWidthForGlobal+'px',width:modelInfo.delCancel?'0px':'0.5px',height:modelInfo.delCancel?'0px':buttonHeight+'px'}}
            ]);
        }else{
            view.draw([
                {tag:'rect',id:'modal',color:`rgba(0,0,0,${opa})`,position:{top:'0px',left:'0px',width:'100%',height:'100%'}},
                {tag:'rect',id:'content',rectStyles:{borderWidth:'2px',radius:'8px',color:`#fff`,backgroundColor:'#fff'},position:{top:startTop+'px',left:startLeft+'px',width:width+'px',height:height+'px'}},
                {tag:'font',id:'title',text:modelInfo.tit,textStyles:{size:'16px',color:'#333'},position:{top:titleTop+'px',left:startLeft+'px',width:width+'px',height:titleHeight+'px'}},
                {tag:'font',id:'text',text:modelInfo.content,textStyles:{size:'14px',color:'#333',whiteSpace:'normal',align:modelInfo.align},position:{top:contentTop+'px',left:startLeft+'px',width:width+'px',height:contentHeight+'px'}},
                {tag:'rect',id:'line',color:'#999',position:{top:lineTop+'px',left:startLeft+'px',width:width+'px',height:'0.5px'}},
                {tag:'rect',id:'line2',color:'#999',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(){
		console.log("我执行了")
        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

第二步：写一个插件，modal.js

import show_modal from './index.js'
  
const xt_show_modal = {
    install: (app, options) =>{
        const show_modal_fun = function(op={}){
            //#ifdef APP-PLUS
            return  new Promise((resolve, reject)=>{
				console.log("998877")
               let moc = new show_modal({
                    ...op,
                    $event:function(e){
						console.log(e,'777');
                        if(e.res){
                            resolve(e);
                        }else{
                            reject(e);
                        }
                     }
                })
                moc .show();
            })
            //#endif
             
            //#ifdef H5 || MP
                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
             
        }
        uni.$showModal = show_modal_fun
    }
};
  
export default xt_show_modal;

第三步：在main.js中引入

import xt_show_modal from './utils/modal/modal.js'
app.use(xt_show_modal)

第四步：使用

//在任意页面或js中使用  
//带取消按钮的
uni.$showModal({
	title:"", //可选,不填则不显示
    content:'未知错误，请联系管理员！未知错误，请联系管理员！未知错误，请联系管理员！',
	confirmVal: '确定',  // 可选
	cancelVal:'取消',     // 可选
}).then(res=>{
	console.log('确认');		
}).catch(res=>{
	console.log('取消');
});

//不带取消按钮的
uni.$showModal({
	title:"",               //可选,不填则不显示
	content:'未知错误，请联系管理员！未知错误，请联系管理员！未知错误，请联系管理员！',
	confirmVal: '确定',  // 可选
	delCancel:true
}).then(res=>{
	console.log('确认');	
}).catch(res=>{
	console.log('取消');
});