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Download PDF by Nathan Ooley: Beginning iOS Cloud and Database Development

By Nathan Ooley

ISBN-10: 1430241136

ISBN-13: 9781430241133

ISBN-10: 1430241144

ISBN-13: 9781430241140

Beginning iOS Cloud and Database Development will get you begun with construction apps that use Apple's iCloud. you are going to research the ideas on the way to show you how to devise and create iOS apps that could have interaction with iCloud servers. From the fundamentals up, you are going to steadily easy methods to configure your app for iCloud, add and obtain documents, enforce revisions, upload clash answer regulations, and paintings with customized files.

There's extra! you will the right way to combine iCloud with middle information dependent functions. in addition to technical recommendation, you can find feedback and most sensible practices to layout the interplay of iCloud-driven purposes.

According to many resources, analysts, and indicates, Apple will depend a growing number of on iCloud or net apps within the cloud to shop and movement data-intensive media and different kinds of apps. because the majority of apps use a few type of data—and that merely will develop as apps turn into extra complicated with wealthy and streaming media—this e-book exhibits builders how you can create apps for iCloud, Apple's new cloud computing garage and information service.

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Additional info for Beginning iOS Cloud and Database Development

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You should also never call this method on the main thread because it will lock the UI. When you first put a file into the container, the entire document is uploaded to iCloud. If that document changes for any reason only certain pieces of that file are sent up to iCloud to trigger those changes. This method allows iCloud to remain efficient while keeping all the documents it handles up to date. Document Metadata One of the nice features of iCloud is how it handles your file metadata. Your files’ metadata take precedence over the actual data contained inside the document.

It will actually throw a compiler error if you try to change the constant value. Application Delegate and NSUserDefaults NSUserDefaults is a local key-value store provided by iOS. Its intended use is to store settings that help determine the application’s default state. In our case we will use it to store the user’s display name and his favorite number. Because we want to be sure these defaults exist when the application starts, it makes the most sense to start in the application delegate. We will start off by writing a method to check whether our user defaults exist: - (BOOL)hasDefaults { BOOL hasDefaults = YES; if([[NSUserDefaults standardUserDefaults] stringForKey:CTDisplayName] == nil) hasDefaults = NO; else if([[NSUserDefaults standardUserDefaults] stringForKey:CTFavoriteNumber] == nil) hasDefaults = NO; return hasDefaults; } We start by creating a BOOL variable hasDefaults and setting it to YES.

We then do a check to make sure that our reasonForChange is not nil. If it is, we return out of this method. If not, we continue on and pull out the integerValue and assign it to reason. Note Apple provides two constants to us for working with the userInfo dictionary of the NSUbiquitousKeyValueStoreDidChangeExternallyNotification notification. They are NSUbiquitousKeyValueStoreChangeReasonKey and NSUbiquitousKeyValueStoreChangedKeysKey. 54 CHAPTER 4: Basic Setup of iCloud and Key-Value Storage In the if block we are checking for two change reasons NSUbiquitousKeyValueStoreServerChange and NSUbiquitousKeyValueStoreInitialSyncChange.

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Beginning iOS Cloud and Database Development by Nathan Ooley


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