iOS：当用户强制退出应用程序时在后台执行任务

Question

In iOS application, I want to upload data on server when internet available. Now problem is, if user has force quit the application then how I can re-invoke the application or can do task in background when internet is available? Is there any possible way in iOS?

Answer 1

Apple is not allowing to run code after the user force quits the app. There are just some special rules to reactivate the app like blutooth implementation. For normal server task, you just can work while the user not force quits the app.

Edit

Not even with special rules you can reactivate your app. Bluetooth reactivation and co only works if the app gets killed by memory issues or something similiar. If the user force quits the app, the app will not run until next app start.

Answer 2

The iOS will give you 3mins to run a background task. Take a look at https://medium.com/@abhimuralidharan/finite-length-tasks-in-background-ios-swift-60f2db4fa01b