iOS 获取默认值
示例
要在NSUserDefaults中获取值,可以使用以下功能:
迅速
arrayForKey(_:)boolForKey(_:)
dataForKey(_:)
dictionaryForKey(_:)
floatForKey(_:)
integerForKey(_:)
objectForKey(_:)
stringArrayForKey(_:)
stringForKey(_:)
doubleForKey(_:)
URLForKey(_:)
目标C
-(nullable NSArray *)arrayForKey:(nonnull NSString *)defaultName;-(BOOL)boolForKey:(nonnull NSString *)defaultName;
-(nullable NSData *)dataForKey:(nonnull NSString *)defaultName;
-(nullable NSDictionary<NSString *, id> *)dictionaryForKey:(nonnull NSString *)defaultName;
-(float)floatForKey:(nonnull NSString *)defaultName;
-(NSInteger)integerForKey:(nonnull NSString *)defaultName;
-(nullable id)objectForKey:(nonnull NSString *)key;
-(nullable NSArray<NSString *> *)stringArrayForKey:(nonnull NSString *)defaultName;
-(nullable NSString *)stringForKey:(nonnull NSString *)defaultName;
-(double)doubleForKey:(nonnull NSString *)defaultName;
-(nullable NSURL *)URLForKey:(nonnull NSString *)defaultName;
用法示例为:
迅速
let homeCountry = NSUserDefaults.standardUserDefaults().stringForKey("HomeCountry")
目标C
NSString *homeCountry = [[NSUserDefaults standardUserDefaults] stringForKey:@"HomeCountry"];
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