[__NSPlaceholderDictionary initWithObjects:forKeys:count:]: attempt to insert nil object from object

青旅半醒 2024-05-03 14:41 143阅读 0赞

错误：

// 苹果审核给的错误

CoreFoundation 0x1a1331dd0 +[NSDictionary dictionaryWithObjects:forKeys:count:] + 59

// 真实的错误

[__NSPlaceholderDictionary initWithObjects:forKeys:count:]: attempt to insert nil object from objects[0]

[__NSPlaceholderDictionary initWithObjects:forKeys:count:]: attempt to insert nil object from objects[1]

1.

[__NSPlaceholderDictionary initWithObjects:forKeys:count:]: attempt to insert nil object from objects[0]

[__NSPlaceholderDictionary initWithObjects:forKeys:count:]: attempt to insert nil object from objects[1]

表示错误在NSDictionary/NSArray的第一位和第二位数据有问题

2.出现问题的原因

NSDictionary *dic =@{@”aaa”:aaa}； // 当aaa为nil的时候，就会出现：attempt to insert nil object from objects[0]

3.

操作数据的正确方式：

(1.1)

// 存一个数据

NSUserDefaults *userDefaultsTimer = [NSUserDefaults standardUserDefaults];

[userDefaultsTimer setObject:@”2” forKey:@”NowPracticeType”];

(1.2)

// 存多个数据

NSUserDefaults *userDefaultsTimer = [NSUserDefaults standardUserDefaults];

NSMutableDictionary *parmDic = [NSMutableDictionary dictionary];

[parmDic setValue:@”aaa” forKey:@”aaa”]; // 为nil的时候会自动过滤，不存入里面

[parmDic setValue:@”bbb” forKey:@”bbb”];

[userDefaultsTimer setObject:parmDic forKey:@”userStudytime”];

(2.1)

// 取一个数据

NSUserDefaults *userDefaultsTimer = [NSUserDefaults standardUserDefaults];

NSString *aaa = [userDefaultsTimer objectForKey:@”NowPracticeType”];

(2.2)

// 取多个数据

NSUserDefaults *userDefaultsTimer = [NSUserDefaults standardUserDefaults];

NSMutableDictionary *dicRecodeUserTimer = [userDefaultsTimer objectForKey:@”userStudytime”];

NSString *aaa = dicRecodeUserTimer[@”aaa”];

NSString *bbb = dicRecodeUserTimer[@”bbb”];

(3)

// 以参数的方式传递的时候

NSMutableDictionary *paraDic = [[NSMutableDictionary alloc] init];

[parmDic setValue:@”aaa” forKey:@”aaa”];

[parmDic setValue:@”bbb” forKey:@”bbb”];

NSMutableDictionary *para = [NSMutableDictionary getpara:@”….接口名…..” dic:paraDic];

PS:请不要使用 NSDictionary *dic =[NSDictionary dictionaryWithObjectsAndKeys:@”xxx”,@”xxx”,nil]; 这种方式创建数据

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