NSUserDefaults简单使用

//字典存入本地

NSUserDefaults *userdef = [NSUserDefaults standardUserDefaults];

[userdef setObject:xxx forKey:xxx];

[userdef synchronize];     //每次更新数据

//拿到所存内容

NSUserDefaults *userdf = [NSUserDefaults standardUserDefaults];

[userdf objectForKey:_model.uid]

//清除

NSString*appDomain = [[NSBundle mainBundle] bundleIdentifier];

[[NSUserDefaults standardUserDefaults] removePersistentDomainForName:appDomain];