1：保存數據

?　　[[NSUserDefaultsstandardUserDefaults] setObject:@"http://www.baidu.com"forKey:@"selectedURL"];

2：取數據

　　?NSLog(@" 正在訪問---> %@",[[NSUserDefaultsstandardUserDefaults] objectForKey:@"selectedURL"]);

3：官方說明：

Getting the Shared NSUserDefaults Instance

• • +?standardUserDefaults
  • +?resetStandardUserDefaults

Initializing an NSUserDefaults Object

• • –?init
  • –?initWithUser:

Registering Defaults

• • –?registerDefaults:

Getting Default Values

• • –?arrayForKey:
  • –?boolForKey:
  • –?dataForKey:
  • –?dictionaryForKey:
  • –?floatForKey:
  • –?integerForKey:
  • –?objectForKey:
  • –?stringArrayForKey:
  • –?stringForKey:
  • –?doubleForKey:
  • –?URLForKey:

Setting Default Values

• • –?setBool:forKey:
  • –?setFloat:forKey:
  • –?setInteger:forKey:
  • –?setObject:forKey:
  • –?setDouble:forKey:
  • –?setURL:forKey:

Removing Defaults

• • –?removeObjectForKey:

Maintaining Persistent Domains

• • –?synchronize
  • –?persistentDomainForName:
  • –?persistentDomainNames
  • –?removePersistentDomainForName:
  • –?setPersistentDomain:forName:

Accessing Managed Environment Keys

• • –?objectIsForcedForKey:
  • –?objectIsForcedForKey:inDomain:

Managing the Search List

• • –?dictionaryRepresentation

Maintaining Volatile Domains

• • –?removeVolatileDomainForName:
  • –?setVolatileDomain:forName:
  • –?volatileDomainForName:
  • –?volatileDomainNames

Maintaining Suites

• • –?addSuiteNamed:
  • –?removeSuiteNamed:

轉載于:https://www.cnblogs.com/cocoajin/archive/2013/05/25/3099133.html

總結

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