【Foundation-86-3】#import Foundation/NSValue.h 初始化

本文主要是介绍【Foundation-86-3】#import Foundation/NSValue.h 初始化，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

@interface NSNumber : NSValue

- (instancetype)initWithCoder:(NSCoder *)aDecoder NS_DESIGNATED_INITIALIZER;

//实例方法初始化

- (NSNumber *)initWithChar:(char)value NS_DESIGNATED_INITIALIZER;

- (NSNumber *)initWithUnsignedChar:(unsigned char)value NS_DESIGNATED_INITIALIZER;

- (NSNumber *)initWithShort:(short)value NS_DESIGNATED_INITIALIZER;

- (NSNumber *)initWithUnsignedShort:(unsigned short)value NS_DESIGNATED_INITIALIZER;

- (NSNumber *)initWithInt:(int)value NS_DESIGNATED_INITIALIZER;

- (NSNumber *)initWithUnsignedInt:(unsigned int)value NS_DESIGNATED_INITIALIZER;

- (NSNumber *)initWithLong:(long)value NS_DESIGNATED_INITIALIZER;

- (NSNumber *)initWithUnsignedLong:(unsigned long)value NS_DESIGNATED_INITIALIZER;

- (NSNumber *)initWithLongLong:(long long)value NS_DESIGNATED_INITIALIZER;

- (NSNumber *)initWithUnsignedLongLong:(unsigned long long)value NS_DESIGNATED_INITIALIZER;

- (NSNumber *)initWithFloat:(float)value NS_DESIGNATED_INITIALIZER;

- (NSNumber *)initWithDouble:(double)value NS_DESIGNATED_INITIALIZER;

- (NSNumber *)initWithBool:(BOOL)value NS_DESIGNATED_INITIALIZER;

- (NSNumber *)initWithInteger:(NSInteger)value NS_AVAILABLE(10_5, 2_0) NS_DESIGNATED_INITIALIZER;

//64 推荐使用，其他少用

- (NSNumber *)initWithUnsignedInteger:(NSUInteger)value NS_AVAILABLE(10_5, 2_0) NS_DESIGNATED_INITIALIZER;

//获取数据

@property (readonly) char charValue;

@property (readonly) unsigned char unsignedCharValue;

@property (readonly) short shortValue;

@property (readonly) unsigned short unsignedShortValue;

@property (readonly) int intValue;

@property (readonly) unsigned int unsignedIntValue;

@property (readonly) long longValue;

@property (readonly) unsigned long unsignedLongValue;

@property (readonly) long long longLongValue;

@property (readonly) unsigned long long unsignedLongLongValue;

@property (readonly) float floatValue;

@property (readonly) double doubleValue;

@property (readonly) BOOL boolValue;

@property (readonly) NSInteger integerValue NS_AVAILABLE(10_5, 2_0);//64 推荐使用，其他少用

@property (readonly) NSUInteger unsignedIntegerValue NS_AVAILABLE(10_5, 2_0);

@property (readonly, copy) NSString *stringValue;//nsnumber 变成字符串

    NSNumber *strNumber = [NSNumber numberWithInteger:3];NSString *str = [strNumber stringValue];NSLog(@"%@",str);

- (NSComparisonResult)compare:(NSNumber *)otherNumber;//比较，排序用

    NSNumber *number1 = [NSNumber numberWithInteger:13];NSNumber *number2 = [NSNumber numberWithInteger:14];NSComparisonResult result = [number1 compare:number2];if (result == NSOrderedAscending) {NSLog(@"升序");//number2 比 number1 大}else if (result == NSOrderedSame){NSLog(@"一致");}else if (result == NSOrderedDescending){NSLog(@"降序");}else{NSLog(@"error");}

- (BOOL)isEqualToNumber:(NSNumber *)number;//判断是否一致

    NSNumber *number1 = [NSNumber numberWithInteger:13];NSNumber *number2 = [NSNumber numberWithInteger:14];if ([number1 isEqualToNumber:number2]) {NSLog(@"same");}else{NSLog(@"nonono");}

- (NSString *)descriptionWithLocale:(id)locale;//本地化的字符串，规范化。继续研究 NSLocale

    NSNumber *number2 = [NSNumber numberWithInteger:1314];NSString *string = [number2 descriptionWithLocale:[NSLocale currentLocale]];NSLog(@"%@",string);

@end

@interface NSNumber (NSNumberCreation)

//类方法初始化

+ (NSNumber *)numberWithChar:(char)value;

+ (NSNumber *)numberWithUnsignedChar:(unsigned char)value;

+ (NSNumber *)numberWithShort:(short)value;

+ (NSNumber *)numberWithUnsignedShort:(unsigned short)value;

+ (NSNumber *)numberWithInt:(int)value;

+ (NSNumber *)numberWithUnsignedInt:(unsigned int)value;

+ (NSNumber *)numberWithLong:(long)value;

+ (NSNumber *)numberWithUnsignedLong:(unsigned long)value;

+ (NSNumber *)numberWithLongLong:(long long)value;