Cannot run app on real Apple Watch

Question

my configuration: Apple Watch (WatchOS 2.0.1), iPhone 5S (iOS 9.1) Xcode 7.1 on MacOS X El Capitan.

I can run my app on the iPhone just fine. However, when I try to run my app on the Apple Watch, it seems like it's not possible. What I see in the status bar is the usual steps

Building MyApp on Apple Watch

Installing to Apple Watch

Running MyApp on Apple Watch

And then, in less that a second, it shows

Finished Running MyApp on Apple Watch

As if I had just pressed the stop button in Xcode (but without my having pressed it at all). No error message or warning. It just stops.

As a result, I'm not able to debug my app on the Apple Watch to see the log messages, memory usage, etc.

Any ideas? Thanks in advance for your help!

Answer 1

When this happened to me, I fixed the issue by:

1. Making sure there are no problems with your Main.storyboard and it has an initial view controller.
2. Deleted app on phone
3. Rebooted phone
4. Rebooted watch
5. Quit xcode and rebooted mac

Answer 2

You could build the app to iPhone first, wait the watch app sync to watch. (Or you could sync it in companion by turn off and turn on the install switch manually)

Then keep the app running on watch, select Xcode->Debug->Attach to Process->XXXXX Extension(the name of your watch extension)

After a while you should be able to debug the watch app.