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31
jeepay-ui-uapp-agent/hooks/useBackPress.js
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31
jeepay-ui-uapp-agent/hooks/useBackPress.js
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import onceVar from '@/util/onceVar.js'
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import { onBackPress } from '@dcloudio/uni-app'
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import {nextTick} from 'vue'
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/*
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本函数用于阻断返回操作,当页面开启图片预览与选择框时,app上的返回操作,会直接返回到上一级页面,不符合正常的体验。 所以触发返回事件,优先关闭图片预览与其他弹窗
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参数fun 为具体使用页面的关闭弹窗函数,需要在这里执行一次
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onceVar 为全局唯一变量,保存在内存中。 (可用vuex代替)
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*/
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export default function (fun) {
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onBackPress((option) => {
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if (onceVar.imgView()) {
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nextTick(() => {
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fun()
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inactive()
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})
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return true
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}
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return false
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})
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const active = () => onceVar.imgView(true)
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const inactive = () => onceVar.imgView(false)
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return { active, inactive }
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}
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