What Is Firebase Swizzling?

Do push notifications cost money?

Sending a push notification, no matter if you’re supplying the backend infrastructure, is never truly free of cost.

There’s also one glaring issue with sending out push notifications yourself – you lack the ability to study your push notification analytics..

How does firebase messaging work?

It works on the principle of down streaming messages from FCM servers to user’s app and upstream messages from user’s apps to FCM servers. Firebase comes with a lot of new features along with the GCM infrastructure.

Is firebase free to use?

Firebase freemium is the pricing strategy by Google that is provided free of charge, but you need to spend money on getting additional features and services.

Is firebase messaging free?

Firebase Cloud Messaging is free of charge, just like Google Cloud Messaging was. The Firebase pricing page shows exactly what Firebase features are paid. Yes, it’s free. You can use Analytics for advanced messaging – out of the box.

What is the difference between Swift 4 and 5?

Swift 5 is source compatible with Swift 4.2, but isn’t binary compatible with earlier Swift releases. However, future releases will be binary compatible with Swift 5 thanks to ABI stability. … You’ll find Swift Evolution proposal numbers like [SE-0001] in each section of the tutorial.

What is method Swizzling in Objective C?

Method swizzling is the process of changing the implementation of an existing selector. It’s a technique made possible by the fact that method invocations in Objective-C can be changed at runtime, by changing how selectors are mapped to underlying functions in a class’s dispatch table.

How do I use firebase notification?

Set up a Firebase Cloud Messaging client app on AndroidTable of contents.Set up the SDK. Before you begin. Create a Firebase project. Register your app with Firebase. … Edit your app manifest.Access the device registration token. Retrieve the current registration token. Monitor token generation.Check for Google Play services.Prevent auto initialization.Next steps.

What does @objc mean in Swift?

Objective-C dynamic dispatch@objc means you want your Swift code (class, method, property, etc.) to be visible from Objective-C. dynamic means you want to use Objective-C dynamic dispatch.

What is method Swizzling Swift?

Peter Steinberger. iOS Development Swift. Swizzling (other languages call this “monkey patching”) is the process of replacing a certain functionality or adding custom code before the original code is called. For example, you could swizzle UIViewController.

What happens when you invoke a method on a nil pointer?

In Objective-C, it is valid to send a message to nil — it simply has no effect at runtime. … If the method returns any pointer type, any integer scalar of size less than or equal to sizeof(void*) , a float , a double , a long double , or a long long , then a message sent to nil returns 0 .

What is dynamic keyword in Swift?

Dynamic dispatch. It simply means that the Objective-C runtime decides at runtime which implementation of a particular method or function it needs to invoke. … Swift uses the Swift runtime whenever possible. The result is that it can make a number of optimizations.

Is Swift static or dynamic?

But Swift itself is static, and in fact is explicitly designed in order to minimize or eliminate the use of Objective-C-type dynamism. Swift itself, is statically typed. When used with Cocoa, you get access to the objective-c runtime library which gives you the ability to use dynamic classes, messages and all.

What is firebase notification?

Firebase Cloud Messaging (FCM) is a cross-platform messaging solution that lets you reliably send messages at no cost. Using FCM, you can notify a client app that new email or other data is available to sync. You can send notification messages to drive user re-engagement and retention.

What is firebase used for?

Firebase is a Backend-as-a-Service (Baas). It provides developers with a variety of tools and services to help them develop quality apps, grow their user base, and earn profit. It is built on Google’s infrastructure. Firebase is categorized as a NoSQL database program, which stores data in JSON-like documents.

Is Google Cloud Messaging free?

Send messages to any device Firebase Cloud Messaging (FCM) provides a reliable and battery-efficient connection between your server and devices that allows you to deliver and receive messages and notifications on iOS, Android, and the web at no cost.