如何使用目标C获取文件路径 [英] How to acquire a file path using objective c

问题描述

我想要一个仅返回finder中所选文件的完整文件路径的函数.

I want a function which just returns the full file path of a file selected in finder.

我目前具有此功能:

+ (NSString*)choosePathWindow:(NSString*)title buttonTitle:(NSString*)buttonTitle allowDir:(BOOL)dir allowFile:(BOOL)file{
    [NSApp activateIgnoringOtherApps:YES];

    NSOpenPanel *openPanel = [NSOpenPanel openPanel];
    [openPanel setLevel:NSFloatingWindowLevel];
    [openPanel setAllowsMultipleSelection:NO];
    [openPanel setCanChooseDirectories:dir];
    [openPanel setCanCreateDirectories:dir];
    [openPanel setCanChooseFiles:file];
    [openPanel setMessage:title];
    [openPanel setPrompt:buttonTitle];

    NSString* fileName = nil;
    if ([openPanel runModal] == NSModalResponseOK)
    {
        for( NSURL* URL in [openPanel URLs])
        {
            fileName = [URL path];
        }
    }
    [openPanel close];
    return fileName;
}

但是，这通常表现得很糟糕，并且结结巴巴地出现，并且在选择文件(我有i7-7700k和16GB ddr4)后经常挂起，并且在单击取消"时始终挂起.我也相信，这可能与我拥有的外部网络安装有关.但是其他任何软件，例如PHPStorm或Chrome，都可以在同一窗口中正常工作.

But this usually behaves awfully and stutters into view and often hangs after choosing a file (I have an i7-7700k and 16GB ddr4) and always hangs when clicking cancel. I also believe that this may be to do with external network mounts I have. But any other software such as PHPStorm or Chrome work fine with the same window.

有更好的方法吗?

推荐答案

代码看起来不错.尝试从主线程调用函数；模式对话框需要此功能，通常不会自己执行.无论如何，Powebox(在沙箱中运行NSOpenPanel的东西)有点像野兽.另外，直接从Xcode启动的调试版本(不太好)和从Finder启动的发布版本可能会得到不同的结果.

The code looks fine. Try calling your function from main thread; modal dialogs need this and usually don't enforce it themselves. In any case the Powebox (the thing that runs NSOpenPanel in sandbox) is a bit of a beast. Also you might get different results with debug build launched directly from Xcode (not so good) and release build launched from Finder.

要测试NSOpenPanel，请执行以下操作:尝试以访客帐户运行您的App，以消除所有杂乱无章的东西.

To test NSOpenPanel: Try running your App under a guest account to eliminate all stuff that's cluttering the sandbox .

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