How can I run automated tests that support real iOS devices, take screenshots, and identify controls by ID?

I need to run some automated UI checks on our native iPhone app. I'd like to be able to do the following:

I'd like to automate a few actions and take screen shots.
I don't want the tool to identify the buttons by image or text, as my app changes images and text all the time. I'd like to identify controls by ID.
I'd like to run these tests on a real iPhone device.
Lastly, when I complete one test, I need to access to settings to modify a few changes, then relaunch app to test. (no need to resume the app)

Is there a good way to achieve these kinds of automated UI tests?

Solution

You can use the instrument that apple provides - UIAutomation It provides all expected automation facilities. Screenshots can also be taken. Check for documentation here apple doc

Here is a nice tutorial to start with http://cocoamanifest.net/articles/2011/05/uiautomation-an-introduction.html