uniapp：3分钟搞定在线推送，
import permision from "@/js_sdk/wa-permission/"
export default {
onLaunch: function() {
var main = plus.android.runtimeMainActivity();
var pkName = main.getPackageName();
var uid = main.getApplicationInfo().plusGetAttribute("uid");
var NotificationManagerCompat = plus.android.importClass(
"."
);
//.v4升级为androidx
if (NotificationManagerCompat == null) {
NotificationManagerCompat = plus.android.importClass(
""
);
}
var areNotificationsEnabled = NotificationManagerCompat.from(main).areNotificationsEnabled();
// 未开通‘允许通知’权限，则弹窗提醒开通，并点击确认后，跳转到系统设置页面进行设置
if (!areNotificationsEnabled) {
console.log('请开启权限：通知管理-允许通知')
uni.showModal({
title: '权限提示',
content: '请前往 通知管理 开启权限',
confirmColor: '#7287EA',
success: function(res) {
if (res.confirm) {
permision.gotoAppPermissionSetting() // 跳转到APP设置，用户手动开启通知权限
} else if (res.cancel) {
console.log('用户点击取消');
}
}
});
}
}
}