NSUserDefaults setObject：forKey：嘗試插入非屬性列表對象

我認爲我在這裏做了一些非常明顯的錯誤，但我弄不明白！我試圖將包含NSString和NSNumbers和NSBooleans的NSMutableDictionary保存到iOS 7.1的NSUserDefaults中。NSUserDefaults setObject：forKey：嘗試插入非屬性列表對象

這裏的字典中的定義：

- (NSMutableDictionary *)hotLevelsDict 
{ 
    if ((!_hotLevelsDict) || ([_hotLevelsDict count] < 1)) 
    { 
     _hotLevelsDict = [NSMutableDictionary dictionaryWithDictionary: 
          @{@100: [NSMutableDictionary dictionaryWithDictionary:@{@"time": @20, @"points": @50, @"complete": @NO}], 
          @200: [NSMutableDictionary dictionaryWithDictionary:@{@"time": @20, @"points": @100, @"complete": @NO}], 
          @500: [NSMutableDictionary dictionaryWithDictionary:@{@"time": @20, @"points": @200, @"complete": @NO}], 
          @1000: [NSMutableDictionary dictionaryWithDictionary:@{@"time": @20, @"points": @200, @"complete": @NO}], 
          @2000: [NSMutableDictionary dictionaryWithDictionary:@{@"time": @20, @"points": @500, @"complete": @NO}], 
          @5000: [NSMutableDictionary dictionaryWithDictionary:@{@"time": @20, @"points": @1000, @"complete": @NO}], 
          @10000: [NSMutableDictionary dictionaryWithDictionary:@{@"time": @20, @"points": @1000, @"complete": @NO}], 
          @20000: [NSMutableDictionary dictionaryWithDictionary:@{@"time": @10, @"points": @1000, @"complete": @NO}], 
          @50000: [NSMutableDictionary dictionaryWithDictionary:@{@"time": @20, @"points": @1000, @"complete": @NO}], 
          @100000: [NSMutableDictionary dictionaryWithDictionary:@{@"time": @20, @"points": @1000, @"complete": @NO}], 
          @200000: [NSMutableDictionary dictionaryWithDictionary:@{@"time": @20, @"points": @1000, @"complete": @NO}], 
          @300000: [NSMutableDictionary dictionaryWithDictionary:@{@"time": @20, @"points": @1000, @"complete": @NO}], 
          @400000: [NSMutableDictionary dictionaryWithDictionary:@{@"time": @20, @"points": @1000, @"complete": @NO}], 
          @500000: [NSMutableDictionary dictionaryWithDictionary:@{@"time": @20, @"points": @1000, @"complete": @NO}], 
          @600000: [NSMutableDictionary dictionaryWithDictionary:@{@"time": @20, @"points": @1000, @"complete": @NO}], 
          @700000: [NSMutableDictionary dictionaryWithDictionary:@{@"time": @20, @"points": @1000, @"complete": @NO}], 
          @800000: [NSMutableDictionary dictionaryWithDictionary:@{@"time": @20, @"points": @1000, @"complete": @NO}], 
          @900000: [NSMutableDictionary dictionaryWithDictionary:@{@"time": @5, @"points": @50000, @"complete": @NO}], 
          @950000: [NSMutableDictionary dictionaryWithDictionary:@{@"time": @2, @"points": @50000, @"complete": @NO}] 
          }]; 
    } 

    return _hotLevelsDict; 
}

，並將其保存：

[defaults setObject:self.hotLevelsDict forKey:@"hotLevelsDict"];

我已經試過印刷字典中的所有子對象的類別，而且他們所有的標準，我也正在以同樣的方式構建另一個字典，並且工作正常。

請有人指出我的錯誤？

謝謝！

來源

2014-04-20 user2851943

在plist中，鍵必須是字符串。由於NSUserDefaults由plist支持，因此它會強制執行此限制。

作爲一個旁註，我認爲你會更清楚地使用[@{...} mutableCopy]。

來源

2014-04-20 18:22:58 Kevin

啊太棒了！謝謝！還有很好的技巧mutableCopy謝謝:) – user2851943

我面臨同樣的問題。你能澄清，如果有可能將字典保存爲NSUserDefaults的字符串對象？ –

@techsavvy是的，你可以有一個字典作爲一個值，但該字典中的每個鍵也必須是一個字符串。 – Kevin

的NSUserDefault僅支持NSString，NSNumber，NSDate，NSArray，NSDictionary，BOOL，NSInteger，NSFloat等基本數據類型。

如果這些集合類型包含其他非系統數據類型，它們仍可能導致崩潰。如果您包含自定義數據類型，則需要將其轉換爲NSData存儲。 This is my test demo

來源

2016-04-27 15:38:21 huangqibiao

NSUserDefaults setObject：forKey：嘗試插入非屬性列表對象

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