iOS 轻量级NSUserDefaults使用总结

NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];

[userDefaults setInteger:myInteger forKey:@"myInteger"];
[userDefaults setFloat:myFloat forKey:@"myFloat"];
[userDefaults setDouble:myDouble forKey:@"myDouble"];
[userDefaults setObject:myString forKey:@"myString"];
[userDefaults setObject:myDate forKey:@"myDate"];
[userDefaults setObject:myArray forKey:@"myArray"];
[userDefaults setObject:myDictionary forKey:@"myDictionary"];
//这里建议同步存储到磁盘中，但是不是必须的
[userDefaults synchronize];

NSUserDefaults *userDefaultes = [NSUserDefaults standardUserDefaults];

NSInteger myInteger = [userDefaultes integerForKey:@"myInteger"];
//读取浮点型float类型的数据
float myFloat = [userDefaultes floatForKey:@"myFloat"];
//读取double类型的数据
double myDouble = [userDefaultes doubleForKey:@"myDouble"];
//读取NSString类型的数据
NSString *myString = [userDefaultes stringForKey:@"myString"];
//读取NSDate日期类型的数据
NSDate *myDate = [userDefaultes valueForKey:@"myDate"];
NSDateFormatter *df = [[NSDateFormatter alloc] init];
[df setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
//读取数组NSArray类型的数据
NSArray *myArray = [userDefaultes arrayForKey:@"myArray"];
//读取字典类型NSDictionary类型的数据
NSDictionary *myDictionary = [userDefaultes dictionaryForKey:@"myDictionary"];