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iOS 基础类解析 - NSNumber
NSNumber Class Reference
| Inherits from | NSValue : NSObject |
| Conforms to | NSCopying (NSValue) NSSecureCoding (NSValue) NSObject (NSObject) |
| Framework | /System/Library/Frameworks/Foundation.framework |
| Availability | Available in iOS 2.0 and later. |
| Declared in | NSDecimalNumber.h NSValue.h |
| Companion guides | Number and Value Programming Topics Property List Programming Guide |
Advanced UISearchBar CryptoExercise ListAdder RosyWriter TheElements |
Creating an NSNumber Object
+ numberWithBool:+ numberWithChar:+ numberWithDouble:+ numberWithFloat:+ numberWithInt:+ numberWithInteger:+ numberWithLong:+ numberWithLongLong:+ numberWithShort:+ numberWithUnsignedChar:+ numberWithUnsignedInt:+ numberWithUnsignedInteger:+ numberWithUnsignedLong:+ numberWithUnsignedLongLong:+ numberWithUnsignedShort:
Initializing an NSNumber Object
– initWithBool:– initWithChar:– initWithDouble:– initWithFloat:– initWithInt:– initWithInteger:– initWithLong:– initWithLongLong:– initWithShort:– initWithUnsignedChar:– initWithUnsignedInt:– initWithUnsignedInteger:– initWithUnsignedLong:– initWithUnsignedLongLong:– initWithUnsignedShort:
Accessing Numeric Values
– boolValue– charValue– decimalValue– doubleValue– floatValue– intValue– integerValue– longLongValue– longValue– shortValue– unsignedCharValue– unsignedIntegerValue– unsignedIntValue– unsignedLongLongValue– unsignedLongValue– unsignedShortValue
Retrieving String Representations
– descriptionWithLocale:– stringValue
Comparing NSNumber Objects
– compare:– isEqualToNumber:
Accessing Type Information
– objCType
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