How to open an application from background ios

Question

Is it possible to open the background app into foreground in iOS ?.

I have a scenario like, If suppose my application in background then after sometime I need to up the application into foreground programmatically. Is it possible ?

I don't need to upload the application in Appstore.

Answer 1

Yes, it is possible.

You can wake your app up by different kinds of criteria using Push Notifications or Local Notifications. Remotely by using Push Notifications. Locally by calendar alerts, location-based triggers or task alerts.

The users can configure and complete turn of Notifications for your app, in which case it is not possible.

See introduction from Apple here. https://developer.apple.com/notifications/

Answer 2

As far as i know iOS does not provide a way to open your app. You can continue long running tasks while in the background opportunistically fetch content remind users to re-open your app if need be and prompt the first two with silent push notifications if need be.

Answer 3

您无法在ios设备中在没有用户操作的情况下启动应用程序，因为它受到Apple的限制，现在您可以使用backgroundfetch在后台打开应用程序以进行某些网络通话或所需的操作，但仅限于不到一分钟的时间最多持续30秒，在此期间您的网络请求应已完成并且所有长时间任务都已计划，即使在后台感染期间，您也可以通过在MAIN线程上发布通知来更新UI。