Question

大家好我是Xcode / iOS开发的新手

我试图将json数据添加到可变数组中，这会导致应用程序崩溃:( 到目前为止，这是我的代码：

if(! [defaults objectForKey:@"Person1"])
    [defaults setObject:[PersonsFromSearch objectAtIndex:index] forKey:@"Person1"];
else
{
    NSMutableArray *Array = [[NSMutableArray alloc]init];
    id object = [defaults objectForKey:@"Person1"];
    Array = [object isKindOfClass:[NSArray class]] ? object : @[object];
    [Array addObject:[PersonsFromSearch objectAtIndex:index]];//crash here :((
    [Array moveObjectFromIndex:[Array count] toIndex:0];

}

崩溃转储：

*由于未捕获的异常'NSInvalidArgumentException'而终止应用程序，原因：' - [__ NSArrayI addObject：]：无法识别的选择器发送到实例0xcb4d380' * 首先抛出调用堆栈：

这里有什么问题？能帮我解决这个问题吗

数组包含这个（Json？）

{
   Address = "\U05d3\U05e8\U05da \U05d4\U05e9\U05dc\U05d5\U05dd 53";
   CellPhone = "052-3275381";
   EMail = "editor@pc.co.il";
   EnglishPerson = "Yehuda Konfortes";
   FaceBookLink = "";
   Fax1 = "03-7330703";
   Fax2 = "";
   FileNAme = "100050.jpg";
   HomeEMail = "";
   HomeFax = "";
   HomePhone1 = "";
   HomePhone2 = "";
   PersonID = 100050;
   PersonName = "\U05d9\U05d4\U05d5\U05d3\U05d4   \U05e7\U05d5\U05e0\U05e4\U05d5\U05e8\U05d8\U05e1";
   Phone1 = "03-7330733";
   Phone2 = "";
   ZipCode = "";
 }

Answer 1

[defaults objectForKey:@"Person1"];返回字典但不返回数组。所以你不能使用addObject方法。

<强> UPD 您可以通过具有单个对象的创建数组来解决此崩溃。这是更新的代码：

NSMutableArray *Array = [[NSMutableArray alloc]init];
id object = [defaults objectForKey:@"Person1"];
Array = [object isKindOfClass:[NSArray class]] ? [object mutableCopy] : [@[object] mutableCopy];
[Array addObject:[PersonsFromSearch objectAtIndex:index]];//crash here :((
[Array moveObjectFromIndex:[Array count] toIndex:0];

Answer 2

NSMutableArray * _arr = [[NSMutableArray alloc] init]; NSDictionary * results = PASS JSON Value ;

[_ arr add object：[results objectforkey：@“Address”]]; [_arr add object：[results objectforkey：@“CellPhone”]];

将Json添加到可变数组中会在崩溃中解决

2 个答案: