UserInfoManager.h文件

import <UIKit/UIKit.h>
@interface UserInfoManager : NSObject
+(BOOL)initWithDic:(NSDictionary *)dic;
+(NSDictionary *)readUserInfo;
+(BOOL)isFirstLoad;
+(BOOL)updateWithObject:(id)obj forKey:(NSString *)key;
+(BOOL)updateWithBool:(BOOL)boolValue forKey:(NSString *)key;
+(BOOL)updateWithFloat:(float)floatValue forKey:(NSString *)key;
@end
UserInfoManager.m文件
import "UserInfoManager.h"
import "Foundation/Foundation.h"
@interface UserInfoManager ()
@end
@implementation UserInfoManager
//是否第一次登陸
+(BOOL)isFirstLoad
{

if([[NSUserDefaults standardUserDefaults] objectForKey:@"isFirstLoad"])

{

    [[NSUserDefaults standardUserDefaults] setBool:NO forKey:@"isFirstLoad"];

    return YES;

}


else

{

    return NO;

}


}
//創建一個NSUserDefaults對象用以保存數據
+(BOOL)initWithDic:(NSDictionary *)dic
{

NSUserDefaults * userInfoManager = [NSUserDefaults standardUserDefaults];

if (dic == Nil) {

    return NO;

}

NSArray * keys = [dic allKeys];

for(int i = 0;i < [keys count];i ++)

{

    [userInfoManager setObject:[dic objectForKey:[keys objectAtIndex:i]] forKey:[keys objectAtIndex:i]];

}

return [userInfoManager synchronize];


}
//讀取數據
+(NSDictionary *)readUserInfo
{
NSUserDefaults * userInfoManager = [NSUserDefaults standardUserDefaults];
return [userInfoManager dictionaryRepresentation];
}
//更改某項數據
+(BOOL)updateWithObject:(id)obj forKey:(NSString *)key
{

[[NSUserDefaults standardUserDefaults] setObject:obj forKey:key];


return  [[NSUserDefaults standardUserDefaults] synchronize];
}
+(BOOL)updateWithBool:(BOOL)boolValue forKey:(NSString *)key
{

[[NSUserDefaults standardUserDefaults] setBool:boolValue  forKey:key];

return  [[NSUserDefaults standardUserDefaults] synchronize];


}
+(BOOL)updateWithFloat:(float)floatValue forKey:(NSString *)key
{

[[NSUserDefaults standardUserDefaults] setFloat:floatValue  forKey:key];

return  [[NSUserDefaults standardUserDefaults] synchronize];


}
@end
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