一、苹果

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var UIApplication = plus.ios.import("UIApplication");
var app = UIApplication.sharedApplication();
var enabledTypes = 0;
if (app.currentUserNotificationSettings) {
var settings = app.currentUserNotificationSettings();
enabledTypes = settings.plusGetAttribute("types");
} else {
//针对低版本ios系统
enabledTypes = app.enabledRemoteNotificationTypes();
}

console.log("enabledTypes:"+enabledTypes);
if ( 0 == enabledTypes ) {
console.log("在通知栏中开启消息提示");
}else{
console.log("已开启");
}

plus.ios.deleteObject(app);

也可以这样写：

var UIApplication = plus.ios.import("UIApplication");
var app = UIApplication.sharedApplication();
var enabledTypes = 0;
if (app.currentUserNotificationSettings) {
var settings = app.currentUserNotificationSettings();
enabledTypes = settings.plusGetAttribute("types");
} else {
//针对低版本ios系统
enabledTypes = app.enabledRemoteNotificationTypes();
}
plus.ios.deleteObject(app);
if ( 0 == enabledTypes ) {
uni.showModal({
title: '提示',
content: '请先打开APP通知权限',
showCancel: false,
success: function (res) {
if (res.confirm) {
var UIApplication = plus.ios.import("UIApplication");
var NSURL = plus.ios.import("NSURL");
var setting = NSURL.URLWithString("app-settings:");
var application = UIApplication.sharedApplication();
application.openURL(setting);
plus.ios.deleteObject(setting);
plus.ios.deleteObject(application);
}
}
});
}

官方示例：
var UIApplication = plus.ios.import("UIApplication");
var app = UIApplication.sharedApplication();
var enabledTypes = 0;
if (app.currentUserNotificationSettings) {
var settings = app.currentUserNotificationSettings();
enabledTypes = settings.plusGetAttribute("types");
} else {
enabledTypes = app.enabledRemoteNotificationTypes();
}
plus.ios.deleteObject(app);

二、安卓代码
var main = plus.android.runtimeMainActivity();
var pkName = main.getPackageName();
var NotificationManagerCompat = plus.android.importClass("android.support.v4.app.NotificationManagerCompat");
var packageNames = NotificationManagerCompat.from(main);
console.log(JSON.stringify(packageNames));
if (packageNames.areNotificationsEnabled()) {
console.log('已开启通知权限');
}else{
uni.showModal({
title: '提示',
content: '请先打开APP通知权限！',
showCancel: false,
success: function (res) {
if (res.confirm) {
var Intent = plus.android.importClass('android.content.Intent');
var intent = new Intent('android.settings.APP_NOTIFICATION_SETTINGS');
//可设置表中所有Action字段
intent.putExtra('android.provider.extra.APP_PACKAGE', pkName);
main.startActivity(intent);
}
}
});
}

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