lecture8-malan - iOS Objective-C Window-based Applications...

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Unformatted text preview: iOS Objective-C, Window-based Applications, MVC OSes Used Regularly 150 120 90 60 30 0 D BS nux Li OS c Ma s ari ol w do in S W XP s W ws o nd i ista V W s7 w do in Devices Used Regularly 100 75 50 25 0 A d roi nd e on ph A oid r nd t bl e ta k lac B rry Be Pad i e on iPh d Po i uch to ebO w e on ph S W s7 w do in e on ph Most Excited For... Web 12% Android 39% iOS 48% .h @interface Foo: NSObject { // instance variables } // declarations of methods @end .m @implementation Foo // definitions of methods @end Instance Variables @protected @private @public Class Methods +alloc; Instance Methods  ­ (int)age;  ­ (void)setAge:(int)age;  ­ (void)init;  ­ (void)initWithName:(NSString *)name andAge:(int)age; Messages [student age]; [student setAge:20]; [student init]; [student initWithName:@"Alice" andAge:20]; Selectors alloc age setAge: init initWithName:andAge: @property assign copy retain atomic nonatomic readonly readwrite @synthesize Memory Management alloc autorelease dealloc release retain Collections NSArray NSMutableArray NSDictionary NSMutableDictionary NSSet NSMutableSet ... Fast Enumeration for (id foo in bar) { // do something with foo } Categories @interface Foo (Bar)  ­(void)baz; @end Protocols @interface Student <NSCopying> { } ... @end Protocols @implementation Student ...  ­(id)copyWithZone:(NSZone *)zone { Student *s = [Student allocWithZone:zone]; [s initWithName:_name andAge:_age]; return s; } ... @end NSException @try { // try something here } @catch (NSException *e) { // handle exception here } @finally { // do something here } NSError NSError *e = nil; if ([foo bar:baz error:&e] == nil) { // handle error } MVC http://developer.apple.com/library/ios/documentation/iphone/conceptual/iPhone101/Articles/02_DesignPatterns.html ...
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