[英]How to set again user default for dictionary
如何再次将用户默认设置为字典。
创建字典对象并为其设置值。
NSMutableDictionary * loginDictionary = [[NSMutableDictionary alloc] init];
[loginDictionary setValue:@"My Address" forKey:@"ADDRESS_KEY"];
[loginDictionary setValue:@"1234567890" forKey:@"PHONE_KEY"];
[[NSUserDefaults standardUserDefaults] setObject:newDictionary forKey:@"INFO_KEY"];
[[NSUserDefaults standardUserDefaults] synchronize];
现在,我评估那些字典值并将其分配给其他对象。
NSDictionary *RetrievedDictionary = [[NSUserDefaults standardUserDefaults] dictionaryForKey:@"INFO_KEY"];
txt_Address.text = [RetrievedDictionary objectForKey:@"ADDRESS_KEY"];
txt_Mobile.text = [RetrievedDictionary objectForKey:@"PHONE_KEY"];
如何更新?
这就是我尝试的。
[[NSUserDefaults standardUserDefaults] setObject:@"Changed Address" forKey:@"ADDRESS_KEY"];
[[NSUserDefaults standardUserDefaults] setObject:@"0987654321" forKey:@"PHONE_KEY"];
[[NSUserDefaults standardUserDefaults] synchronize];
它不适合我,需要您的小建议我在做什么错。 @提前致谢。
NSMutableDictionary* changedDictionary = [NSMutableDictionary dictionaryWithDictionary:[[NSUserDefaults standardUserDefaults] dictionaryForKey:@"INFO_KEY"]];
[changedDictionary setObject:@"Changed Address" forKey:@"ADDRESS_KEY"];
[changedDictionary setObject:@"0987654321" forKey:@"PHONE_KEY"];
[[NSUserDefaults standardUserDefaults] setObject:changedDictionary forKey:@"INFO_KEY"];
[[NSUserDefaults standardUserDefaults] synchronize];
NSMutableDictionary * loginDictionary = [[NSMutableDictionary alloc] init];
[loginDictionary setValue:@"My Address" forKey:@"ADDRESS_KEY"];
[loginDictionary setValue:@"1234567890" forKey:@"PHONE_KEY"];
[[NSUserDefaults standardUserDefaults] setObject:newDictionary forKey:@"INFO_KEY"];
[[NSUserDefaults standardUserDefaults] synchronize];
您正在创建loginDictionary,但是将newDictionary添加到NSUserDefaults。 我也建议使用常量键。
这个怎么样?
NSMutableDictionary *changedDictionary = [[[NSUserDefaults standardUserDefaults] dictionaryForKey:@"INFO_KEY"] mutableCopy];
[changedDictionary setObject:txt_Address.text forKey:@"ADDRESS_KEY"];
[changedDictionary setObject:txt_Mobile.text forKey:@"PHONE_KEY"];
[[NSUserDefaults standardUserDefaults] setObject:changedDictionary forKey:@"INFO_KEY"];
[[NSUserDefaults standardUserDefaults] synchronize];
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.