“无法恢复先前选择的帧”当循环遍历 NSDictionary 时

发布于 2024-12-04 03:35:44 字数 1037 浏览 4 评论 0原文

我在我的应用程序中遇到以下错误：

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];
}

突出显示此行线程1：程序收到信号：“EXC_BAD_ACCESS”

[propertyData release];

json字符串在解析之前如下所示（因此您可能会理解数据是如何构造的，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>"}
    ]
}

知道出了什么问题吗？

感谢您的帮助，

斯蒂芬

原文

I got the following errors in my app:

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

when using the following code:

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];
}

with this line hightlighted Thread 1: Program received signal: "EXC_BAD_ACCESS"

[propertyData release];

the json string looks like the following before parsing (so you may understand how data are structured, the parsing works fine though):

{
    "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>"}
    ]
}

Any idea of what's wrong ?

Thx for helping,

Stephane

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