uniapp云打包成apk后 页面不跳转

<template>    
    <view>    
        <view class="u-page login-from">    
            <u--form labelPosition="top" labelWidth="auto" :model="formModel" :rules="rules" ref="uform">    
                <u-form-item label="用户名" prop="userName" borderBottom ref="item1">    
                    <u--input v-model="formModel.userName" border="none"></u--input>    
                </u-form-item>    
                <u-form-item label="密码" prop="password" borderBottom ref="item2">    
                    <u--input v-model="formModel.password" border="none" type="password"></u--input>    
                </u-form-item>    
                <button type="primary" shape="circle" @click="login">登录</button>    
                <br>    
                <button type="default" shape="circle" form-type="reset">注册</button>    
            </u--form>    
        </view>    
    </view>    
</template>    

<script>    
    import {    
        doLogin    
    } from '@/common/http/api.js';    
    export default {    
        data() {    
            return {    
                formModel: {    
                    userName: '',    
                    password: ''    
                },    
                rules: {    
                    'userName': [{    
                        type: 'string',    
                        required: true,    
                        message: '请填写用户名',    
                        trigger: ['blur', 'change']    
                    }],    
                    'password': [{    
                        type: 'string',    
                        required: true,    
                        message: '请填写用户密码',    
                        trigger: ['blur', 'change']    
                    }]    
                }    

            }    
        },    
        onReady() {    
            // 如果需要兼容微信小程序，并且校验规则中含有方法等，只能通过setRules方法设置规则    
            this.$refs.uform.setRules(this.rules)    
        },    

        /*      onLoad({userName,password}) {    
                    this.userName=userName    
                    this.password=password    
                }, */    

        methods: {    
            login() {    
                this.$refs.uform.validate().then(obj => {    
                    uni.$u.toast('校验通过')    
                    const params = {    
                        userCode: this.formModel.userName,    
                        userPwd: this.formModel.password    
                    }    
                    doLogin(params).then((res) => {    
                        console.log(res)    
                        uni.$u.vuex('vuex_token', res.token)    
                        uni.$u.vuex('vuex_user', res.loginUser)    
                        //uni.setStorageSync('token', res.token);    
                        // 登录成功提示    
                        uni.showToast({    
                            title: "登录成功"    
                        })    
                         setTimeout(() => {    
                            // 回源跳转    
                            const url = uni.getStorageSync("currentRoute") || "/pages/index/index"    
                            uni.$u.route({    
                                type: "reLaunch",    
                                url    
                            })     
                        }, 1500)     
                    })    

                }).catch(errors => {    
                    uni.$u.toast('校验失败')    
                })    
            },    
        }    
    }    
</script>    

<style lang="scss" scoped>    
    .login-from {    
        width: 600rpx;    
        margin: auto;    
        height: 200rpx;    
        left: 0;    
        top: 0;    
        bottom: 0;    
        right: 0;    
        position: absolute;    
    }    
</style>  

模拟器运行和真机运行都能跳转，就是打包成apk后不得行，登录成功是提示了的