Apple invented “bundles” and “frameworks” to greatly improve the ease of development and maintenance of OS X projects. They are really good.<\/p>\n
But Apple modified Xcode to try and stop people using these on iOS. I don’t know why.<\/p>\n
Today I delved into this to find out the correct, working, simplest\/easiest solution…
\n<\/p>\n
(and an Easy Life)<\/p>\n
We want:<\/p>\n
The brief solution:<\/p>\n
You’re a Good Developer, and you follow Apple’s design and guides. You put your code, images and other re-usable assets into a Static Library Bundle.<\/p>\n
Everything fails<\/strong>. It turns out that someone made Xcode5 corrupt iOS apps (iOS only! OS X apps are left alone) if they contain Bundles. There are multiple bugs outstanding against Xcode 4 and Xcode 5 here; the worst of them “accidentally” caused Xcode4 to stop submitting apps to the App Store … but thankfully that appears mostly fixed now (I didn’t get it with Xcode5).<\/p>\n It’s important to note that we are not hacking Xcode here; everything we do is correct and legal<\/strong>, we’re just working around bugs in Xcode’s GUI, or its default settings, or its build commands, etc.<\/p>\n \nAs far as I can guess … it’s all an accidental side-effect of disabling Frameworks in iOS. (Which, of course, is another head-scratcher. iOS developers have already proven there is no reason to not have Frameworks<\/a>, and in general Apple wants you<\/em> to have Frameworks. But for some reason – maybe a good one, we don’t know because Apple hasn’t divulged it – the Xcode team broke this stuff years ago and hasn’t got around to fixing it.\n<\/p><\/blockquote>\n Some googling reveals that you can workaround this by having TWO bundles:<\/p>\n …and then it still doesn’t work. After some more googling you discover a handful of bugs you have to workaround:<\/p>\n There is a “correct way” and an “incorrect way” for an operating system to load resources. All OS’s except Apple’s do it the “correct” way.<\/p>\n Basically … NSBundle is a very old library, and is missing a core feature that is needed by every non-trivial project: recursive search. You can add it:<\/p>\n [objc] \t\tfor( NSBundle* appBundle in allAppBundles ) \t\t\t\t\tif([subBundle pathForResource:nibName ofType:@"nib"] != nil) \t\treturn nil; [objc] \t\t\/** \t\t\t\tif( momdURL == nil ) \/\/ not found, so check the bundle for sub-bundles \t\t\t\tif( momdURL != nil ) \t\t\tNSAssert( momdURL != nil, @"Failed to find the momd file for incoming modelName = %@. Maybe you forgot to convert your MOM to a MOMD? (Xcode major bug: used to do this automatically, now it doesn’t)", self.modelName ); \t\t_mom = [[NSManagedObjectModel alloc] initWithContentsOfURL:momdURL]; \treturn _mom;\n
\n
[NSBundle mainBundle] methods stop working<\/h2>\n
Fix for loadNibNamed:<\/h3>\n
\n+(NSArray *) loadNibFromAnyBundleWithName:(NSString*) nibName owner:(id)owner options:(NSDictionary *)options
\n{
\n\tif([[NSBundle mainBundle] pathForResource:nibName ofType:@"nib"] != nil)
\n\t{
\n\t\treturn [[NSBundle mainBundle] loadNibNamed:nibName owner:owner options:options];
\n\t}
\n\telse
\n\t{
\n\t\tNSArray* allAppBundles = [NSBundle allBundles];<\/p>\n
\n\t\t{
\n\t\t\tif([appBundle pathForResource:nibName ofType:@"nib"] != nil)
\n\t\t\t{
\n\t\t\t\treturn [appBundle loadNibNamed:nibName owner:owner options:options];
\n\t\t\t}
\n\t\t\telse
\n\t\t\t{
\n\t\t\t\t\/** This only recurses one level deep; it is exceptionally rare to need to go multi-levels,
\n\t\t\t\t and really APPLE NEEDS TO FIX THEIR RESOURCE METHODS *\/
\n\t\t\t\tfor( NSURL* subURL in [appBundle URLsForResourcesWithExtension:@"bundle" subdirectory:nil])
\n\t\t\t\t{
\n\t\t\t\t\tNSBundle* subBundle = [NSBundle bundleWithURL:subURL];<\/p>\n
\n\t\t\t\t\t{
\n\t\t\t\t\t\treturn [subBundle loadNibNamed:nibName owner:owner options:options];
\n\t\t\t\t\t}
\n\t\t\t\t}
\n\t\t\t}
\n\t\t}<\/p>\n
\n\t}
\n}
\n[\/objc]<\/p>\nFix for CoreData<\/h3>\n
\n-(NSManagedObjectModel*) dataModel
\n{
\n\tif( _mom == nil )
\n\t{
\n\t\tNSString* momdPath = [[NSBundle mainBundle]pathForResource:self.modelName ofType:@"momd"];
\n\t\tNSURL* momdURL = nil;<\/p>\n
\n\t\t WHEREVER your MOMD file is hiding, we’ll find it!
\n\t\t *\/
\n\t\tif( momdPath == nil )
\n\t\t{
\n\t\t\tNSArray* allAppBundles = [NSBundle allBundles];
\n\t\t\tfor( NSBundle* appBundle in allAppBundles )
\n\t\t\t{
\n\t\t\t\tmomdURL = [appBundle URLForResource:self.modelName withExtension:@"momd" subdirectory:nil];<\/p>\n
\n\t\t\t\t{
\n\t\t\t\t\tfor( NSURL* subURL in [appBundle URLsForResourcesWithExtension:@"bundle" subdirectory:nil])
\n\t\t\t\t\t{
\n\t\t\t\t\t\tNSBundle* subBundle = [NSBundle bundleWithURL:subURL];
\n\t\t\t\t\t\tmomdURL = [subBundle URLForResource:self.modelName withExtension:@"momd" subdirectory:nil];
\n\t\t\t\t\t\tif( momdURL != nil )
\n\t\t\t\t\t\t{
\n\t\t\t\t\t\t\tbreak;
\n\t\t\t\t\t\t}
\n\t\t\t\t\t}
\n\t\t\t\t}<\/p>\n
\n\t\t\t\t{
\n\t\t\t\t\tbreak;
\n\t\t\t\t}
\n\t\t\t}<\/p>\n
\n\t\t}
\n\t\telse
\n\t\t\tmomdURL = [NSURL fileURLWithPath:momdPath];<\/p>\n
\n\t}<\/p>\n
\n}
\n[\/objc]<\/p>\n