uniapp-h5+获取通知栏权限

需求：控制消息栏的消息打开和关闭

控制消息栏的消息打开和关闭就需要获取手机系统，还有手机通知栏的打开情况

第一步我们先获取手机的系统，根据系统然后获取通知栏打开的状态

if (plus.os.name == 'Android') {//判断是否是安卓系统
    var main = plus.android.runtimeMainActivity();
	var pkName = main.getPackageName();
	var uid = main.getApplicationInfo().plusGetAttribute("uid");
	var NotificationManagerCompat = plus.android.importClass("android.support.v4.app.NotificationManagerCompat");
	//android.support.v4升级为androidx
	if (NotificationManagerCompat == null) {
		NotificationManagerCompat = plus.android.importClass("androidx.core.app.NotificationManagerCompat");
	}
    //areNotificationsEnabled 保存安卓通知栏打开的状态返回值为true或false
	var areNotificationsEnabled = NotificationManagerCompat.from(main).areNotificationsEnabled();

}
else{
    var isOn = undefined;
	var types = 0;
	var app = plus.ios.invoke('UIApplication', 'sharedApplication');
	var settings = plus.ios.invoke(app, 'currentUserNotificationSettings');
	if (settings) {
		types = settings.plusGetAttribute('types');
		plus.ios.deleteObject(settings);
	} else {
		types = plus.ios.invoke(app, 'enabledRemoteNotificationTypes');
	}
	plus.ios.deleteObject(app);
    //isOn 保存苹果通知栏打开的状态返回值为true或false
    isOn = (0 != types);
}

第二步再根据返回的状态来打开通知栏

//安卓打开对应的通知栏
uni.showModal({
	title: '通知权限开启提醒',
	content: '您还没有开启通知权限，无法接受到消息通知，请前往设置！',
	showCancel: false,
	confirmText: '去设置',
	success: function(res) {
		if (res.confirm) {
		    var Intent = plus.android.importClass('android.content.Intent');
			var Build = plus.android.importClass("android.os.Build");
			//android 8.0引导  
			if (Build.VERSION.SDK_INT >= 26) {
				var intent = new Intent('android.settings.APP_NOTIFICATION_SETTINGS');
				intent.putExtra('android.provider.extra.APP_PACKAGE', pkName);
			} else if (Build.VERSION.SDK_INT >= 21) { //android 5.0-7.0  
				var intent = new Intent('android.settings.APP_NOTIFICATION_SETTINGS');
			    intent.putExtra("app_package", pkName);
				intent.putExtra("app_uid", uid);
			} else { //(<21)其他--跳转到该应用管理的详情页  
				intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
				var uri = Uri.fromParts("package", mainActivity.getPackageName(), null);
				intent.setData(uri);
			}
		    // 跳转到该应用的系统通知设置页  
		    main.startActivity(intent);
		}
	}
});
//苹果打开对应的通知栏
uni.showModal({
	title: '通知权限开启提醒',
	content: '您还没有开启通知权限，无法接受到消息通知，请前往设置！',
	showCancel: false,
	confirmText: '去设置',
	success: function(res) {
		if (res.confirm) {
			var app = plus.ios.invoke('UIApplication', 'sharedApplication');
			var setting = plus.ios.invoke('NSURL', 'URLWithString:', 'app-settings:');
			plus.ios.invoke(app, 'openURL:', setting);
			plus.ios.deleteObject(setting);
			plus.ios.deleteObject(app);
		}
	}
});