Ios App Life Cycle States

When the application is started and initialized below method will be invoked and the root view controller is instantiated at this stage.

Ios app life cycle states. Below is the state and method mapping table. These states are known as state s of application lifecycle. While suspended an app remains in memory but does not execute any.

The system moves apps to this state automatically and does not notify them before doing so. Each has their own limitations. Respond to scene based life cycle events.

Application lifecycle helps to understand overall app behaviour. While in this state the app is unable to receive notifications. How the application starts.

The app delegate manages all of your app s windows including those displayed on separate screens. Ios app life cycle. Application life cycle is very important to understand for all the ios developers who want to make enriched immersive and smooth user experience.

A scene represents one instance of your app s ui running on a device. The current state of your app determines what it can and cannot do at any time. In ios 12 and earlier use the uiapplication delegate object to respond to life cycle events.

As a matter of course an app written in the ios system goes through a set of states as it runs. This post talks about the five execution states of an ios app not running suspended background inactive and active. In ios 12 and earlier and in apps that don t support scenes uikit delivers all lifecycle events to the uiapplicationdelegate object.