Question

我的应用中出现以下错误：

warning:Unable to restore previously selected frame
warning:Unable to restore previously selected frame

使用以下代码时：

NSDictionary *feed = [json_parser objectWithString:json_str error:nil];
for(NSDictionary *feed_item in [feed objectForKey:@"items"])
{
    PropertyData *propertyData; // mere data model class with properties only,no methods
    [propertyData release];
}

此行突出显示主题1：收到收到的信号：“EXC_BAD_ACCESS”

[propertyData release];

在解析之前，json字符串看起来如下所示（因此您可以理解数据的结构，但解析工作正常）：

{
    "total":110,"page":1,
    "items":[
        {"pid":"1349","price":"52,000","type":"Apartment","beds":"","descr1":"<p></p>"},
        {"pid":"1349","price":"52,000","type":"Apartment","beds":"","descr1":"<p></p>"},
        {"pid":"1349","price":"52,000","type":"Apartment","beds":"","descr1":"<p></p>"}
    ]
}

知道什么是错的？

求助，

的Stephane

Answer 1

您没有分配/初始化PropertyData。指针指的是内存中的一些随机位置，然后你发送它“释放”消息，导致EXC_BAD_ACCESS，

循环遍历NSDictionary时“无法恢复以前选择的帧”

1 个答案: