NSOpenPanel runModal崩溃？ [英] NSOpenPanel runModal Crashes?

问题描述

我有一个例程，基于在这个论坛上找到的代码：

I'm have a routine based on code found on this forum:

+ (FSRef)useOpenFileToGetFSRef:(NSString **)fileName requiredFileType: (NSString*) requiredFileType
{
     FSRef fileFSRef;
    NSArray* fileTypes = [[NSArray alloc] initWithObjects:requiredFileType, nil];

    //http://stackoverflow.com/questions/11815784/objective-c-nsopenpanel-get-filename
    NSOpenPanel* openDlg = [NSOpenPanel openPanel];
    [openDlg setFloatingPanel:YES];
    [openDlg setCanChooseDirectories:NO];
    [openDlg setCanChooseFiles:YES];
    [openDlg setAllowsMultipleSelection:YES];
    [openDlg setAllowedFileTypes:fileTypes];

    if ( [openDlg runModal] == NSOKButton )  //<== CRASHES ON CALL TO runModal
    {
        NSArray* filePaths = [openDlg URLs];
        //only getting 1st file
        NSURL *fileUrl = [filePaths objectAtIndex:0];

        *fileName = [fileUrl path];
        CFURLGetFSRef((CFURLRef)fileUrl, &fileFSRef);
    }

    return fileFSRef;
}

应用程序可重复地对runModel的调用：

The app repeatably crases on the call to runModel:

有什么可以解释这一点吗？

What could explain this?

非常感谢所有的任何信息。

Thanks very much in advance to all for any info.

em>系统信息：OS X 10.8.4。使用ARC编译。

System info: OS X 10.8.4. Compiled using ARC.

推荐答案

我实际上认为你对所有异常都有一个断点。我刚碰到这个，正在寻找为什么。我遇到这个职位，但后来发现了以下。

I actually think you had a breakpoint on all exceptions. I just ran into this and was looking for why. I ran into this post, but then found the following.

使用Xcode 4.5.1调试时NSOpenPanel崩溃

当您重新创建项目时，重置。

When you recreated the project, the breakpoints got reset.

这篇关于NSOpenPanel runModal崩溃？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！