嵌入页面有多个历史时,app端默认会返回嵌入页面的上一页,而不是uniapp的上一页
onBackPress可以拦截到返回类型,实体返回(from = backbutton)、导航栏左上角返回(from = backbutton)、uni.navigateBack()返回 (from = navigateBack)
onBackPress返回为true才不执行默认返回、使用自己的方法
注:onBackPress里调用uni.navigateBack()并返回为true时,会死循环,需要判断from = navigateBack时返回false
onBackPress(e) {
if (e.from === 'navigateBack') {
return false;
}
let pages = getCurrentPages()
let page = pages[pages.length - 1];
let currentPages = page.$getAppWebview() //获得当前webview的对象
let children=currentPages.children()
if(children.length===0){
uni.navigateBack()
}else{
children[0].close()
setTimeout(()=>{
uni.navigateBack()
},80)
}
return true;
},