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);2. 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;
} 4. 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'}
},5. 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_modelshow_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
});