Yu-Te Lin

Previously I posted an article regrading modifying Three20 code to support rotation on iOS 6 applications. (Three20 + iOS 6 Rotation) 

Here I'm going to post another issue caused by Three20 and the solution.

The issue only happens on iPad running iOS 6 and launching in landscape mode. The reason is on iPad the status bar could be in landscape mode before launching the app. And that causes Three20 apps to create an incorrect size of root window.

Here is the solution (with diff). Modify -(UIWindow*)window in TTBaseNavigator.m 

- (UIWindow*)window { if (nil == _window) { UIWindow* keyWindow = [UIApplication sharedApplication].keyWindow; if (nil != keyWindow) { _window = [keyWindow retain]; } else { - _window = [[[self windowClass] alloc] initWithFrame:TTScreenBounds()]; + _window = [[[self windowClass] alloc] initWithFrame: + [UIScreen mainScreen].bounds]; [_window makeKeyAndVisible]; } } return _window; }

And also to support rotation, you need to do 1. and 3. in this post (Three20 + iOS 6 Rotation). And not necessary to do 2. Instead you could do the following change.

Modify setRootViewController in TTBaseNavigator.m (with diff)

Working in a startup environment we may do things not so systematically as in a everything well established software company.  Here is one thing we still do it manually - updating source code in our server.  However, we still try not to make it so unscalable.  We avoid using UI or drag and drop the code, instead we use command lines as everyone would do.

We used to use 'scp' to copy the whole directory to our server.  Unfortunately this caused us problems as our code grew bigger and bigger. We had a large set of often static assets and that could dramatically slow down our process. And it does make no sense to copy everything to the serve even you may have just changed one line of code.  So we stopped uploading the whole directory and uploaded subdirectories instead.  Yes It’s faster but still have the same problem. 

It’s been a trouble until we found rsync. Quote from Wikipedia: “rsync is a software application and network protocol for Unix-like systems (with ports to Windows) that synchronizes files and directories from one location to another while minimizing data transfer by using delta encoding when appropriate.”.

rsync really does the job beautifully. It only takes us few seconds now to update our server.

Here is our sample command to update the server.

rsync -Paz --rsh "ssh -i /PATH/TO/IDENTITY/FILE" --rsync-path "rsync" --exclude "*.pyc" --exclude ".DS_Store" --exclude "PATH/TO/EXCLUDE*" /PATH/TO/SOURCE username@domainname:/PATH/TO/DESTINATION

Excerpts from manual page:

-P                            same as --partial --progress

-a, --archive                archive mode; same as -rlptgoD (no -H)

-z, --compress            compress file data during the transfer

--rsh=COMMAND

  This  option  allows  you to choose an alternative remote shell program to use for communication between the local and remote copies of rsync. Typically, rsync is configured to use ssh by default, but you may prefer to use rsh on a local network.

-rsync-path=PROGRAM

1. Add the following code in TTNavigationController.m

- (BOOL)shouldAutorotate { BOOL result = YES; if (self.topViewController != nil && [self.topViewController respondsToSelector:(@selector(shouldAutorotate))]) { result = [self.topViewController shouldAutorotate]; } return result; } - (NSUInteger)supportedInterfaceOrientations { NSUInteger result = UIInterfaceOrientationMaskPortrait; if (self.topViewController != nil && [self.topViewController respondsToSelector:(@selector(supportedInterfaceOrientations))]) { result = [self.topViewController supportedInterfaceOrientations]; } return result; } - (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation { UIInterfaceOrientation result = UIInterfaceOrientationPortrait; if (self.topViewController != nil && [self.topViewController respondsToSelector:( @selector(preferredInterfaceOrientationForPresentation))]) { result = [self.topViewController preferredInterfaceOrientationForPresentation]; } return result; }

2. Add the [[[UIApplication sharedApplication] keyWindow] setRootViewController:[ [TTNavigator navigator] rootViewController]] after openURLAction

TTNavigator* navigator = [TTNavigator navigator]; [navigator openURLAction:[TTURLAction actionWithURLPath:SOME_URL_STRING]]; [[[UIApplication sharedApplication] keyWindow] setRootViewController:[navigator rootViewController]];

3. Implement iOS 6 rotation functions in your view controller