They have open sourced their server code which you can host by yourself and use it as the backend to your application. Please refer to this guide for instructions on how to host and configure your own Parse server. See this section on the client SDK integration. Parse provides a specialized user class called PFUser that automatically handles much of the functionality required for user account management. With this class, you'll be able to add user account functionality in your app. One of the basic use cases for user management is to have them sign up. Once you have setup a view in storyboard and created a corresponding view controller as shown in below image :.
Parse User Sign-Up documentation.
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Once the user has signed up, next step is to have them log in to your app. The image below shows the Xcode setup to do the same, followed by code snippet for user login note that the username you enter is case sensitive. Parse User Login documentation. Once a user successfully logs into your application, Parse caches the logged in user object for convenient access throughout your application.
You can use this functionality in AppDelegate to check if there is a current user in Parse cache or not. If there is a cached user already present then you can directly load the Home view controller without asking the user to login again. Storing data on Parse is built around the ParseObject.
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This data is schemaless, which means that you don't need to specify ahead of time what keys exist on each ParseObject. You simply set whatever key-value pairs you want, and Parse backend will store it. Each ParseObject has a class name that you can use to distinguish different sorts of data. For example, in case of our application, we might call ParseObject to store uploaded images with name Post :.
You can also declare models that subclass PFObject to make it more convenient to set and get properties. More details in the official documentation on subclassing here. See the snippet below for an example:.
Live queries allows your client to be informed about events when changes to a given Parse query changes. There are currently 5 type of events supported: creation, update, delete, enter an existing object now fulfills the conditions of the Parse query , leave when an existing object no longer fulfills the condition. See this documentation for more context of the Parse LiveQuery spec. To setup, we need to add the ParseLiveQuery to our Podfile :. If you are using XCode 9, there is a currently incompatibility with Swift 4. Here is a workaround to force all dependencies to compile using Swift 3.
Next, we need to instantiate a websocket client using the ParseLiveQuery. We also need to create a subscription to events that may be triggered by the backend. Both the client and subscription should be declared outside lifecycle methods so they are not auto released. Otherwise, no subscription events will be triggered. Note that the Armor class must be designated by the Parse back-end to support live queries. These are straightforward and reasonable to use in a Swift project. Whichever style guide you choose to follow, code clarity must be your most important goal.
Indentation and the tab-space war is a sensitive topic, but again, it depends on taste. I use four spaces indentation in Android projects, and two spaces in iOS and React. In this Recipes app, I follow consistent and easy-to-reason indentation, which I have written about here and here.
However, I find documenting classes and methods are also good for your coworkers and future self. According to the Swift API design guidelines ,. Write a documentation comment for every declaration. If you plan to refactor your code to a framework to share with others in the future, tools like jazzy can generate documentation so other people can follow along. The use of MARK can be helpful to separate sections of code. It also groups functions nicely in the Navigation Bar. You can also use extension groups, related properties and methods. Git is a popular source control system right now.
How to Start Building a Backend for Your iOS App Without Relying on Parse or Firebase
We can use the template. There are both pros and cons in checking in dependencies files CocoaPods and Carthage. It also makes reviewing Pull requests easier. Whether or not you check in the Pods directory, the Podfile and Podfile. I use both iTerm2 to execute commands and Source Tree to view branches and staging. I have used third party frameworks, and also made and contributed to open source a lot. Using a framework gives you a boost at the start, but it can also limit you a lot in the future. There may be some trivial changes that are very hard to work around.
The same thing happens when using SDKs. My preference is to pick active open source frameworks. Read the source code and check frameworks carefully, and consult with your team if you plan to use them. A bit of extra caution does no harm. In this app, I try to use as few dependencies as possible. Just enough to demonstrate how to manage dependencies. Some experienced developers may prefer Carthage , a dependency manager as it gives you complete control.
Here I choose CocoaPods because its easy to use, and it has worked great so far. This looks simple but took me quite some time to figure out. Here I use food2fork. There are many other awesome APIs in this public-api repository. I use 1Password to generate and store my passwords. I use the Insomnia tool to test and analyze API responses. The first impression is important, so is the Launch Screen. The preferred way is using LaunchScreen. To add a launch image to Asset Catalog , open LaunchScreen. We should not pin the image to the Safe Area as we want the image to be full screen.
Also, unselect any margins in the Auto Layout constraints.
A good practice is to provide all the necessary app icons for each device that you support, and also for places like Notification, Settings, and Springboard. Make sure each image has no transparent pixels, otherwise it results in a black background. Keep the background simple and avoid transparency. We need to design square images with a size greater than x so each is able to downscale to smaller images.
You can do this by hand, script, or use this small IconGenerator app that I made. The result is the AppIcon. Asset Catalog is the way to go for modern Xcode projects. The most popular tool for Swift projects is SwiftLint , made by the awesome people at Realm. Then add a. A sample configuration can be fou nd h ere. I use R. It can generate type-safe classes to access font, localisable strings, and colors. Whenever we change resource file names, we get compile errors instead of a implicit crash.
This prevents us inferring with resources that are actively in use. It may sound boring but clients are just a prettier way to represent the API response. The model is perhaps the most basic thing and we use it a lot in the app. It plays such an important role but there can be some obvious bugs related to malformed models and assumptions about how a model should be parsed that need to be considered. We should test for every model of the app.
Ideally, we need automated testing of models from API responses in case the model has changed from the backend. Starting from Swift 4. Our Model should be immutable:. We can use some test frameworks if you like fancy syntax or an RSpec style. Some third party test frameworks may have issues. I find XCTest good enough.
Webrtc Ios Swift Github
You may want to read FlowController and Coordinator for other use cases and to get a better understanding. For now it starts the RecipeFlowController. For delegate there may be a need to check when there are two instances of the same class. Here we use closure for simplicity. Auto Layout has been around since iOS 5, it gets better each year. Although some people still have a problem with it, mostly because of confusing breaking constraints and performance, but personally, I find Auto Layout to be good enough. I try to use Auto Layout as much as possible to make an adaptive UI.
We can use libraries like Anchors to do declarative and fast Auto Layout. The code below is inspired by Constrain t. Remember that Auto Layout in its simplest form involves toggling translatesAutoresizingMaskIntoConstraints and activating isActive constraints.
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There are actually many other layout engines available on GitHub. To get a sense over which one would be suitable to use, check out the LayoutFrameworkBenchmark. Architecture is probably the most hyped and discussed topic. To me, all architectures and patterns define roles for each object and how to connect them. Remember these guiding principles for your choice of architecture:. Includes Bolts, Account Kit, and Facebook frameworks. Requires Xcode 9. Powerful data, trends, and aggregated, anonymized audience insights about the people interacting with your app.
Drive installs with Mobile App Install Ads. Increase engagement with Mobile App Engagement Ads. Find your target audience with Custom Audiences for Mobile Apps. Allow people using your app to share , send a message , or like content. They can also share Custom Stories with Open Graph.
Get data in and out of Facebook's social graph, query data, post stories, upload photos and perform other tasks. Understand people's actions in your app and measure the effectiveness of your Mobile App Ads. Docs Tools Support. View SDKs. In the iOS SDK Analytics Powerful data, trends, and aggregated, anonymized audience insights about the people interacting with your app.