Simulate orientation changes in iOS for testing purposes

Question

I would like to test my app's ability to handle orientation changes (portrait/landscape). I'm currently using KIF and as far as I know, it cannot do this. Is there a way to simulate the rotation events programmatically for the iOS simulator?

I don't care if it is some undocumented private API or hack because this will only run during testing and will not be part of production builds.

Answer 1

Here is a step to achieve this:

+ (KIFTestStep*) stepToInterfaceOrientation: (UIInterfaceOrientation) toInterfaceOrientation {

    NSString* orientation = UIInterfaceOrientationIsLandscape(toInterfaceOrientation) ? @"Landscape" : @"Portrait";
        return [KIFTestStep stepWithDescription: [NSString stringWithFormat: @"Rotate to orientation %@", orientation]
                             executionBlock: ^KIFTestStepResult(KIFTestStep *step, NSError *__autoreleasing *error) {
                                 if( [UIApplication sharedApplication].statusBarOrientation != toInterfaceOrientation ) {
                                     UIDevice* device = [UIDevice currentDevice];
                                     SEL message = NSSelectorFromString(@"setOrientation:");

                                     if( [device respondsToSelector: message] ) {
                                         NSMethodSignature* signature = [UIDevice instanceMethodSignatureForSelector: message];
                                         NSInvocation* invocation = [NSInvocation invocationWithMethodSignature: signature];
                                         [invocation setTarget: device];
                                         [invocation setSelector: message];
                                         [invocation setArgument: &toInterfaceOrientation atIndex: 2];
                                         [invocation invoke];
                                     }
                                 }

                                 return KIFTestStepResultSuccess;
                             }];
}

Note: Keep your device flat on a table or the accelerometer updates will rotate the view back.

Answer 2

To simulate orientation change in UI Automation you can use the setDeviceOrientation method for UIATarget. Example:

UIATarget.localTarget().setDeviceOrientation(UIA_DEVICE_ORIENTATION_LANDSCAPELEFT);

Method needs one parameter 'deviceOrientation' constant. More info here

This 100% works on the real iOS device. I'm not sure about simulator.