ios - 初始化推送通知时 ionic 的奇怪内存泄漏导致卡住

Question

几天以来，我遇到了一些非常奇怪的内存问题。

问题是，有时应用程序会卡住并开始快速增加内存使用量，直到崩溃。当内存增加时，应用程序完全卡住。

经过一些调试后，我确定是这段代码导致了错误:

angular.module('app.shared').factory('PushNotificationService',         PushNotificationService);

PushNotificationService.$inject = [
    '$q',
    'MessagingService'
];

function PushNotificationService($q, MessagingService) {
var me = this;

initialize();

return {
    getStartupMessage: getStartupMessage,
    fetchToken: fetchToken
};

/**
 * Constructor
 * @return {[type]} [description]
 */
function initialize() {
    me.pusher = null;
    me.deviceToken = null;
    me.startupMessage = null;
}

/**
 * Fetches the push token through device interface
 *
 * @return {$q} Promises
 */
function fetchToken() {
    if (me.pusher != null) {
        return $q(function(resolve, reject) {
            console.log('PushService.fetchToken(): Got pusher', me.pusher);

            // when pusher was already initialized, we do not need to fetch it again
            console.log('PushService.fetchToken(): Token was already retrieved', me.deviceToken);
            resolve(me.deviceToken);
        });
    }

    console.log('PushService.fetchToken(): Needs to fetch token bc not retrieved yet');

    return $q(function(resolve, reject) {
        document.addEventListener('deviceready', function() {
            console.log('PushService.fetchToken(): Device is ready', typeof resolve, typeof reject);

            resolve(true);
        }, false);
    }).then(function() {
        console.log('PushService.fetchToken(): No pusher retrieved yet, do it now');

        return __initialize();
    }).then(function(push) {
        console.log('PushService.fetchToken(): Got pusher and start attaching events to it', push);

        return $q(function(resolve, reject) {
            push.on('error', function(error) {
                console.log('PushNotificationService.fetchToken(): Error while retrieving token', error.message, error);

                reject(error);
            });

            push.on('registration', function(data) {
                console.log('PushNotificationService.fetchToken(): Successfully retrieved token', data);

                me.deviceToken = data.registrationId;

                resolve(data.registrationId);
            });

            console.log('PushNotificationService.fetchToken(): Eventhandlers of pusher', push._handlers);
        });
    });
}

/**
 * Initializes the push notifications and tries to fetch the Push token
 * @return {Cordova.Pusher} [description]
 */
function __initialize() {
    me.pusher = PushNotification.init({
        android: {
            senderID: "288503736094"
        },
        ios: {
            alert: true,
            badge: true,
            sound: true,
            clearBadge: true
        },
        windows: {}
    });

    me.pusher.on('notification', __incomingNotification);

    return me.pusher;
}

// additional code which is not relevant here...
// .....
// .....
}

它只发生在 iOS 上并且完全随机，无法在崩溃中找到系统。

调试日志如下所示:

PushService.fetchToken(): Needs to fetch token bc not retrieved yet 

PushService.fetchToken(): Device is ready function function 

PushService.fetchToken(): No pusher retrieved yet, do it now 

PushService.fetchToken(): Got pusher and start attaching events to it {"_handlers":{"registration":[],"notification":[null],"error":[]},"options":{"android":{"senderID":"288503736094"},"ios":{"alert":true,"badge":true,"sound":true,"clearBadge":true},"windows":{}}} 

PushNotificationService.fetchToken(): Eventhandlers of pusher {"registration":[null],"notification":[null],"error":[null]}

Answer 1

这是 cordova-ios 中的一个问题，导致随机位置发生大量内存泄漏。

升级到最新版本修复了它!