Mobile Development 101: Developing
Apps for the iPhone and the Android
Platforms
Michael Galpin, eBay
@michaelg

Why Mobile?

Mobile Transactions
30.0
22.5
$M
15.0
7.5
0
Jan 1, 2008 May 1, 2008 Aug 1, 2008 Oct 1, 2008 Dec 1, 2008 Feb 1, 2009 Apr 1, 2009 Jun 1, 2009
Mobile Web iPhone

Usage
Capabilities

Usage
Capabilities
Phones That Matter
Distribution Barriers

What Platforms?

iPhone
50% of Mobile Internet Usage
Comprehensive Tools
High Volume Distribution Channel

Overview
• Programming Language: Objective-C
• Tools: XCode/Interface Builder, iPhone SDK
• Framework: Cocoa Touch
• Features: Multi-threaded, Open GL ES, Contacts, Email,
WebKit, iTunes, GPS, Google Maps, (Video)Camera, Local
Database, Push Notifications
• Pitfalls: Memory management, no background processing,
no intra-application communication*, QA, App Store
regulations

Objective-C
• Derived and compatible with C
• C libraries in many cases
• Object-oriented
• Smalltalk inspired
• Surprisingly dynamic

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

interface(header)
@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

inheritance
@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

protocol
@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
instance variable
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
method declarations
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
property
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
class/static method
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
input parameter
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
return type
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
method name
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
instance method
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
1st param
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
2nd param
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
3rd param
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
method name
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@interface CurrencyAmount : NSObject <NSCoding>
{
NSDecimalNumber *amount;
NSString *currencyID;
}
@property (nonatomic, retain) NSDecimalNumber *amount;
@property (nonatomic, retain) NSString *currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID;
- (id) initWithNode:(XMLNode *) node;
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID locale:(NSLocale *) locale;
- (id) initWithLocalizedStringAmount:(NSString *) inAmount currencyID:(NSString *) inCurrencyID;
- (id) initWithDecimalAmount:(NSDecimalNumber *) inAmount currencyID:(NSString *) inCurrencyID;
- (CurrencyAmount *) currencyAmountByMultiplyingByQuantity:(int) inQuantity;
- (CurrencyAmount *) currencyAmountByAdding:(CurrencyAmount *) inAmount;
-(NSString*) stringValue;
-(NSString*) rawDecimalAsString;
-(NSString*) formatStringWithoutCurrency;
-(NSString*) formatStringShort:(BOOL) shortForm;
-(NSString*) currencyPrefixShort:(BOOL) shortForm;
- (NSComparisonResult)compare:(CurrencyAmount *)other;
- (BOOL) isZeroAmount;
@end

@implementation CurrencyAmount
@synthesize amount;
@synthesize currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID
{
return [[[CurrencyAmount alloc] initWithDoubleAmount:0.0 currencyID:inCurrencyID] autorelease];
}
- (id) initWithNode:(XMLNode *) node
{
NSString *inCurrencyID = [node attributeValue:@"currencyID"];
[self initWithStringAmount:[node getText] currencyID:inCurrencyID];
return self;
}
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID
{
amount = [[NSDecimalNumber alloc] initWithDouble:inAmount];
self.currencyID = inCurrencyID;
return self;
}
- (BOOL) isZeroAmount
{
return [amount compare:[NSDecimalNumber zero]] == NSOrderedSame;
}
- (void) dealloc
{
[amount release];
[currencyID release];
[super dealloc];
}
@end

@implementation CurrencyAmount implementation of interface
@synthesize amount;
@synthesize currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID
{
return [[[CurrencyAmount alloc] initWithDoubleAmount:0.0 currencyID:inCurrencyID] autorelease];
}
- (id) initWithNode:(XMLNode *) node
{
NSString *inCurrencyID = [node attributeValue:@"currencyID"];
[self initWithStringAmount:[node getText] currencyID:inCurrencyID];
return self;
}
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID
{
amount = [[NSDecimalNumber alloc] initWithDouble:inAmount];
self.currencyID = inCurrencyID;
return self;
}
- (BOOL) isZeroAmount
{
return [amount compare:[NSDecimalNumber zero]] == NSOrderedSame;
}
- (void) dealloc
{
[amount release];
[currencyID release];
[super dealloc];
}
@end

@implementation CurrencyAmount
@synthesize amount;
@synthesize currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID
{
return [[[CurrencyAmount alloc] initWithDoubleAmount:0.0 currencyID:inCurrencyID] autorelease];
}
- (id) initWithNode:(XMLNode *) node
{
NSString *inCurrencyID = [node attributeValue:@"currencyID"];
[self initWithStringAmount:[node getText] currencyID:inCurrencyID];
return self;
}
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID
{
amount = [[NSDecimalNumber alloc] initWithDouble:inAmount];
self.currencyID = inCurrencyID;
return self;
}
- (BOOL) isZeroAmount
{
return [amount compare:[NSDecimalNumber zero]] == NSOrderedSame;
}
- (void) dealloc
{
[amount release];
[currencyID release];
[super dealloc];
}
@end

@implementation CurrencyAmount
@synthesize amount; macro getter/setter
@synthesize currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID
{
return [[[CurrencyAmount alloc] initWithDoubleAmount:0.0 currencyID:inCurrencyID] autorelease];
}
- (id) initWithNode:(XMLNode *) node
{
NSString *inCurrencyID = [node attributeValue:@"currencyID"];
[self initWithStringAmount:[node getText] currencyID:inCurrencyID];
return self;
}
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID
{
amount = [[NSDecimalNumber alloc] initWithDouble:inAmount];
self.currencyID = inCurrencyID;
return self;
}
- (BOOL) isZeroAmount
{
return [amount compare:[NSDecimalNumber zero]] == NSOrderedSame;
}
- (void) dealloc
{
[amount release];
[currencyID release];
[super dealloc];
}
@end

@implementation CurrencyAmount
@synthesize amount;
@synthesize currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID
{
return [[[CurrencyAmount alloc] initWithDoubleAmount:0.0 currencyID:inCurrencyID] autorelease];
}
- (id) initWithNode:(XMLNode *) node
{
NSString *inCurrencyID = [node attributeValue:@"currencyID"];
[self initWithStringAmount:[node getText] currencyID:inCurrencyID];
return self;
}
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID
{
amount = [[NSDecimalNumber alloc] initWithDouble:inAmount];
self.currencyID = inCurrencyID;
return self;
}
- (BOOL) isZeroAmount
{
return [amount compare:[NSDecimalNumber zero]] == NSOrderedSame;
}
- (void) dealloc
{
[amount release];
[currencyID release];
[super dealloc];
}
@end

@implementation CurrencyAmount
@synthesize amount;
@synthesize currencyID;
method implementations
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID
{
return [[[CurrencyAmount alloc] initWithDoubleAmount:0.0 currencyID:inCurrencyID] autorelease];
}
- (id) initWithNode:(XMLNode *) node
{
NSString *inCurrencyID = [node attributeValue:@"currencyID"];
[self initWithStringAmount:[node getText] currencyID:inCurrencyID];
return self;
}
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID
{
amount = [[NSDecimalNumber alloc] initWithDouble:inAmount];
self.currencyID = inCurrencyID;
return self;
}
- (BOOL) isZeroAmount
{
return [amount compare:[NSDecimalNumber zero]] == NSOrderedSame;
}
- (void) dealloc
{
[amount release];
[currencyID release];
[super dealloc];
}
@end

@implementation CurrencyAmount
@synthesize amount;
@synthesize currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID
{
return [[[CurrencyAmount alloc] initWithDoubleAmount:0.0 currencyID:inCurrencyID] autorelease];
}
- (id) initWithNode:(XMLNode *) node
{
NSString *inCurrencyID = [node attributeValue:@"currencyID"];
[self initWithStringAmount:[node getText] currencyID:inCurrencyID];
return self;
}
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID
{
amount = [[NSDecimalNumber alloc] initWithDouble:inAmount];
self.currencyID = inCurrencyID;
return self;
}
- (BOOL) isZeroAmount
{
return [amount compare:[NSDecimalNumber zero]] == NSOrderedSame;
}
- (void) dealloc
{
[amount release];
[currencyID release];
[super dealloc];
}
@end

@implementation CurrencyAmount
@synthesize amount;
@synthesize currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID
{
return [[[CurrencyAmount alloc] initWithDoubleAmount:0.0 currencyID:inCurrencyID] autorelease];
}
method invocation
- (id) initWithNode:(XMLNode *) node
{
NSString *inCurrencyID = [node attributeValue:@"currencyID"];
[self initWithStringAmount:[node getText] currencyID:inCurrencyID];
return self;
}
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID
{
amount = [[NSDecimalNumber alloc] initWithDouble:inAmount];
self.currencyID = inCurrencyID;
return self;
}
- (BOOL) isZeroAmount
{
return [amount compare:[NSDecimalNumber zero]] == NSOrderedSame;
}
- (void) dealloc
{
[amount release];
[currencyID release];
[super dealloc];
}
@end

@implementation CurrencyAmount
@synthesize amount;
@synthesize currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID
{
return [[[CurrencyAmount alloc] initWithDoubleAmount:0.0 currencyID:inCurrencyID] autorelease];
}
- (id) initWithNode:(XMLNode *) node
{
NSString *inCurrencyID = [node attributeValue:@"currencyID"];
[self initWithStringAmount:[node getText] currencyID:inCurrencyID];
return self;
}
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID
{
amount = [[NSDecimalNumber alloc] initWithDouble:inAmount];
self.currencyID = inCurrencyID;
return self;
}
- (BOOL) isZeroAmount
{
return [amount compare:[NSDecimalNumber zero]] == NSOrderedSame;
}
- (void) dealloc
{
[amount release];
[currencyID release];
[super dealloc];
}
@end

@implementation CurrencyAmount
@synthesize amount;
@synthesize currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID
{
return [[[CurrencyAmount alloc] initWithDoubleAmount:0.0 currencyID:inCurrencyID] autorelease];
}
- (id) initWithNode:(XMLNode *) node
{
NSString *inCurrencyID = [node attributeValue:@"currencyID"];string literal
[self initWithStringAmount:[node getText] currencyID:inCurrencyID];
return self;
}
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID
{
amount = [[NSDecimalNumber alloc] initWithDouble:inAmount];
self.currencyID = inCurrencyID;
return self;
}
- (BOOL) isZeroAmount
{
return [amount compare:[NSDecimalNumber zero]] == NSOrderedSame;
}
- (void) dealloc
{
[amount release];
[currencyID release];
[super dealloc];
}
@end

@implementation CurrencyAmount
@synthesize amount;
@synthesize currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID
{
return [[[CurrencyAmount alloc] initWithDoubleAmount:0.0 currencyID:inCurrencyID] autorelease];
}
- (id) initWithNode:(XMLNode *) node
{
NSString *inCurrencyID = [node attributeValue:@"currencyID"];
[self initWithStringAmount:[node getText] currencyID:inCurrencyID];
return self;
}
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID
{
amount = [[NSDecimalNumber alloc] initWithDouble:inAmount];
self.currencyID = inCurrencyID;
return self;
}
- (BOOL) isZeroAmount
{
return [amount compare:[NSDecimalNumber zero]] == NSOrderedSame;
}
- (void) dealloc
{
[amount release];
[currencyID release];
[super dealloc];
}
@end

@implementation CurrencyAmount
@synthesize amount;
@synthesize currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID
{
return [[[CurrencyAmount alloc] initWithDoubleAmount:0.0 currencyID:inCurrencyID] autorelease];
}
- (id) initWithNode:(XMLNode *) node
{
NSString *inCurrencyID = [node attributeValue:@"currencyID"];
[self initWithStringAmount:[node getText] currencyID:inCurrencyID];
return self;
}
nested call
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID
{
amount = [[NSDecimalNumber alloc] initWithDouble:inAmount];
self.currencyID = inCurrencyID;
return self;
}
- (BOOL) isZeroAmount
{
return [amount compare:[NSDecimalNumber zero]] == NSOrderedSame;
}
- (void) dealloc
{
[amount release];
[currencyID release];
[super dealloc];
}
@end

@implementation CurrencyAmount
@synthesize amount;
@synthesize currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID
{
return [[[CurrencyAmount alloc] initWithDoubleAmount:0.0 currencyID:inCurrencyID] autorelease];
}
- (id) initWithNode:(XMLNode *) node
{
NSString *inCurrencyID = [node attributeValue:@"currencyID"];
[self initWithStringAmount:[node getText] currencyID:inCurrencyID];
return self;
}
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID
{
amount = [[NSDecimalNumber alloc] initWithDouble:inAmount];
self.currencyID = inCurrencyID;
return self;
}
- (BOOL) isZeroAmount
{
return [amount compare:[NSDecimalNumber zero]] == NSOrderedSame;
}
- (void) dealloc
{
[amount release];
[currencyID release];
[super dealloc];
}
@end

@implementation CurrencyAmount
@synthesize amount;
@synthesize currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID
{
return [[[CurrencyAmount alloc] initWithDoubleAmount:0.0 currencyID:inCurrencyID] autorelease];
}
- (id) initWithNode:(XMLNode *) node
{
NSString *inCurrencyID = [node attributeValue:@"currencyID"];
[self initWithStringAmount:[node getText] currencyID:inCurrencyID];
this instance
return self;
}
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID
{
amount = [[NSDecimalNumber alloc] initWithDouble:inAmount];
self.currencyID = inCurrencyID;
return self;
}
- (BOOL) isZeroAmount
{
return [amount compare:[NSDecimalNumber zero]] == NSOrderedSame;
}
- (void) dealloc
{
[amount release];
[currencyID release];
[super dealloc];
}
@end

@implementation CurrencyAmount
@synthesize amount;
@synthesize currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID
{
return [[[CurrencyAmount alloc] initWithDoubleAmount:0.0 currencyID:inCurrencyID] autorelease];
}
- (id) initWithNode:(XMLNode *) node
{
NSString *inCurrencyID = [node attributeValue:@"currencyID"];
[self initWithStringAmount:[node getText] currencyID:inCurrencyID];
return self;
}
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID
{
amount = [[NSDecimalNumber alloc] initWithDouble:inAmount];
self.currencyID = inCurrencyID;
return self;
}
- (BOOL) isZeroAmount
{
return [amount compare:[NSDecimalNumber zero]] == NSOrderedSame;
}
- (void) dealloc
{
[amount release];
[currencyID release];
[super dealloc];
}
@end

@implementation CurrencyAmount
@synthesize amount;
@synthesize currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID
{
return [[[CurrencyAmount alloc] initWithDoubleAmount:0.0 currencyID:inCurrencyID] autorelease];
}
- (id) initWithNode:(XMLNode *) node
{
NSString *inCurrencyID = [node attributeValue:@"currencyID"];
[self initWithStringAmount:[node getText] currencyID:inCurrencyID];
return self;
}
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID
{
amount = [[NSDecimalNumber alloc] initWithDouble:inAmount];
self.currencyID = inCurrencyID;
return self;
}
- (BOOL) isZeroAmount
{
return [amount compare:[NSDecimalNumber zero]] == NSOrderedSame;
}
- (void) dealloc
{
override superclass
[amount release];
[currencyID release];
[super dealloc];
}
@end

@implementation CurrencyAmount
@synthesize amount;
@synthesize currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID
{
return [[[CurrencyAmount alloc] initWithDoubleAmount:0.0 currencyID:inCurrencyID] autorelease];
}
- (id) initWithNode:(XMLNode *) node
{
NSString *inCurrencyID = [node attributeValue:@"currencyID"];
[self initWithStringAmount:[node getText] currencyID:inCurrencyID];
return self;
}
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID
{
amount = [[NSDecimalNumber alloc] initWithDouble:inAmount];
self.currencyID = inCurrencyID;
return self;
}
- (BOOL) isZeroAmount
{
return [amount compare:[NSDecimalNumber zero]] == NSOrderedSame;
}
- (void) dealloc
{
[amount release];
[currencyID release];
[super dealloc];
}
@end

@implementation CurrencyAmount
@synthesize amount;
@synthesize currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID
{
return [[[CurrencyAmount alloc] initWithDoubleAmount:0.0 currencyID:inCurrencyID] autorelease];
}
- (id) initWithNode:(XMLNode *) node
{
NSString *inCurrencyID = [node attributeValue:@"currencyID"];
[self initWithStringAmount:[node getText] currencyID:inCurrencyID];
return self;
}
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID
{
amount = [[NSDecimalNumber alloc] initWithDouble:inAmount];
self.currencyID = inCurrencyID;
return self;
}
- (BOOL) isZeroAmount
{
return [amount compare:[NSDecimalNumber zero]] == NSOrderedSame;
}
- (void) dealloc
{
memory mangement
[amount release];
[currencyID release];
[super dealloc];
}
@end

@implementation CurrencyAmount
@synthesize amount;
@synthesize currencyID;
+ (CurrencyAmount *) zeroAmountWithCurrencyID:(NSString *) inCurrencyID
{
return [[[CurrencyAmount alloc] initWithDoubleAmount:0.0 currencyID:inCurrencyID] autorelease];
}
- (id) initWithNode:(XMLNode *) node
{
NSString *inCurrencyID = [node attributeValue:@"currencyID"];
[self initWithStringAmount:[node getText] currencyID:inCurrencyID];
return self;
}
- (id) initWithDoubleAmount:(double) inAmount currencyID:(NSString *) inCurrencyID
{
amount = [[NSDecimalNumber alloc] initWithDouble:inAmount];
self.currencyID = inCurrencyID;
return self;
}
- (BOOL) isZeroAmount
{
return [amount compare:[NSDecimalNumber zero]] == NSOrderedSame;
}
- (void) dealloc
{
[amount release];
[currencyID release];
[super dealloc];
}
@end

Tools

XCode
• Full featured IDE
• Build, debug
• Code navigation, completion
• Refactoring
• SCM Integration
• Wizards

Interface Builder
• Drag-and-drop, UI Design Tool
• Integrated with XCode
• Connect code to UI elements
(events)

Instruments
• Profiling Tool
• Memory Usage
• Leaks
• CPU Usage
• Threads, I/O Monitoring

iPhone Emulator
Runs application natively
Not all APIs available
Some APIs mocked: Location

Cocoa Touch
• MVC Framework
• AppKit
• Controls, Events
• UIKit
• Accelerometer, Multi-touch

Dangers

Garbage

Don’t Call Me...
Push Notifications = Substitute for
Background Processing?

App 2 App
No formal intra-application
communication allowed
Custom URL protocols used as hack

QA?
Manual provisioning: 100 iPhone

Android
• Devices, devices, devices
• Open Source: OS, SDK
• Language: Java+
• Features: Multi-threaded, Open GL
ES, Contacts, Email, WebKit, Media,
GPS, Google Maps, (Video)Camera,
Local Database, Background
Service, Garbage Collection, Intents
• Pitfalls: Memory Management,
Assault on Battery, Devices,
Devices, Devices...

Compiler Dex Compiler Compress
Source Code Class files Dex File APK

Java

Tools

Tools

DDMS

Android Runtime & App Framework
• Activities & Intents • Separation of Concerns
• Launch an Activity based on an • Layout
Intent
• Application Logic
• Application Interop
• XML => Bytecode
• Layout
• Localization

The Web
Services Diet
Web Services: Made for Servers, not
Phones
Data Centric vs. Functional Centric
Mo’ Data, Mo’ Problems
XML = Teh Suck

Try Not to
Drown
•Images, Audio, Video
•Browser features
taken for granted
•Caching / Cache
Management
•Simultaneous
Loading

Security
• What to store on device?
• What about stolen devices?
• Jailbreaking?
• Phishing?
• OAuth???
• Hard coding == FAIL

Upgrades? What Upgrades?
• Far from automatic
• Out of sight, out of mind
• Don’t expect upgrades
• Lots of versions to manage
• Agile Development FTW???

eb
le W
b i
Mo

Mobile Web a.k.a. HTML 5
• One app to rule them all: iPhone,
Android, webOS, Blackberry*
• Language: JavaScript, HTML, CSS
• Tools: ...
• Features: Multi-threaded!, Open GL
ES, Contacts, Email, GPS, Maps,
(Video)Camera, Local Database,
Media, Memory Management,
Security
• Pitfalls: Memory management, no
background processing, WebKit
versioning

Resources

• iPhone Developer Center
• Silicon Valley iPhone Developers
• Stack Overflow
• MOTODEV
• Android Developers
• Silicon Valley Android Developers
• Android Developers Group

Sprint Developer Conference
• October 26-28
• Santa Clara Convention Center
• Android, Mobile Web, webOS, RIM, J2ME, WinMo
• Coding Camps
• Free HTC Hero (Android)
• 4G Demo and Beta