mPaaS framework FAQ

This page lists frequently asked questions about the mPaaS framework. Click a question to view the answer:

Error when upgrading RubyGems: ERROR: Failed to build gem native extension.

Answer: If the error ERROR: Failed to build gem native extension. occurs during a RubyGems upgrade, install the Xcode command-line tools and then try again.

xcode-select --install

Error when installing RVM: Library not loaded

Answer: If the error For dyld: Library not loaded: /usr/local/lib/libgmp.10.dylib occurs when installing Ruby 2.2.4 with RVM, run the following command and then try again.

brew update && brew install gmp

Error when installing RVM: lazy symbol binding failed

Answer: If the error dyld: lazy symbol binding failed: Symbol not found: _clock_gettime occurs when installing Ruby 2.2.4 with RVM, install the Xcode command-line tools and then try again.

xcode-select --install

How to use a custom UIApplication delegate class

Answer: Override DFClientDelegate in the `main` method with your custom class.

How to exit all micro applications and return to the launcher

Answer:

[DTContextGet() startApplication:@"Launcher's app ID" params:nil animated:kDTMicroApplicationLaunchModePushNoAnimation];

How can application B restart application A with new parameters when B is running on top of A

Answer: If application B is running on top of application A, restarting application A closes application B and all other applications layered above A.

[DTContextGet() startApplication:@"A's name" params:@{@"arg": @"something"} launchMode:kDTMicroApplicationLaunchModePushWithAnimation];

At the same time, the DTMicroApplicationDelegate of application A receives the following event. The options dictionary contains the passed parameters.

- (void)application:(DTMicroApplication *)application willResumeWithOptions:(NSDictionary *)options
{
}

Blank screen when opening a XIB-based view controller that inherits from DTViewController

Answer: Rewrite the loadView method in the DTViewControllercategory. The following code provides an example:

@interface DTViewController (NibSupport)
@end

@implementation DTViewController (NibSupport)

- (void)loadView
{
    [super loadView];
}

@end