比较不同的'启动Cocoa应用程序与参数'方法 [英] Comparing different 'the launching Cocoa app with parameters' methods

问题描述

我发现至少有三种方法可以从应用程式启动使用Mac OS X的应用程式。

I found there are at least three ways to launch an app with Mac OS X from an application.

1. NSTask 。我可以给参数，但它似乎不是一个Cocoa应用程序，而是一个UNIX风格的二进制。


2. 系统函数（system（））就像C一样。我不知道为什么，但似乎没有人推荐这种方法。


3. NSWorkspace ，但我找不到一个方法传递参数到这个函数。

1. NSTask. I can give parameters, but it seems that it's not for an Cocoa App, but an UNIX style binary.
2. system function (system()) just the same way as C does. I don't know the reason why but it seems that nobody recommends this method.
3. NSWorkspace, but I can't find a way to pass parameters to this function.

问题

• Q1：


• Q2：每种方法的优点和缺点是什么？


• Q3：启动应用程序（从应用程序）的首选方式是什么？


• 问题4：使用参数（从应用程序）启动应用程序的首选方式是什么？


• 问题5：打开文档（从应用程序）的首选方式是什么？



Questions

• Q1 : Is there any other way to launch an App (from an App) other than three methods?
• Q2 : What's the pros and cons for each method?
• Q3 : What's the preferable way for launching an App (from an App)?
• Q4 : What's the preferable way for launching an App with parameters (from an App)?
• Q5 : What's the preferable way to open a document (from an App)?


• NSWorkspace openFile：withApplication：：用于运行TextMate README.txt ，根据 Roadmaster的回答和此代码，我可以做如下。
  但是，我无法向应用程序提供参数。


• NSWorkspace openFile:withApplication: : For running "TextMate README.txt", based on Roadmaster's answer and this code, I could make it as follows. But, I can't give the parameters to the App.

    NSString * path = @"/Users/smcho/Desktop/README.txt";
    NSURL * fileURL = [NSURL fileURLWithPath: path];
    NSWorkspace * ws = [NSWorkspace sharedWorkspace];
    [ws openFile:[fileURL path] withApplication:@"TextMate"];







• NSWorkspace launchApplicationAtURL：options：：它适用于10.6或更高版本，您可以从此问题 a>。


• NSWorkspace launchApplicationAtURL:options: : It works with 10.6 or later, you can get an example from this question.

    NSURL * bURL = [[NSWorkspace sharedWorkspace] URLForApplicationWithBundleIdentifier:@"com.macromates.textmate"];
    NSWorkspace * ws = [NSWorkspace sharedWorkspace];
    [ws launchApplicationAtURL:bURL options:NSWorkspaceLaunchDefault configuration:nil error:nil];







• NSTask ：这是工作代码。我需要给出正确的二进制路径，它看起来不像Cocoa的方式，因为它是用于运行二进制，而不是捆绑。虽然，可以提供更多的参数，而不只是一个文件名。


• NSTask : This is the working code. I need to give the correct binary path, and it doesn't look like a Cocoa way, as it's for running binary, not bundle. Though, it's possible to give more parameters than just a file name.

    [NSTask launchedTaskWithLaunchPath:@"/Applications/TextMate.app/Contents/MacOS/TextMate"     arguments:[NSArray arrayWithObjects:@"hello.txt", nil]];







• system（）我可以运行system（open -a ABC --args hello.txt），就像我用命令行。 看起来这是最简单的方法。


• system() : With the shell, I could run "system(open -a ABC --args hello.txt)", just like I do with the command line. It seems that this is the easiest way to go.

推荐答案

在10.6及更高版本中，NSWorkspace有一个方法 launchApplicationAtURL：options：configuration：error：，可用于向应用程序传递参数。

In 10.6 and later, NSWorkspace has a method launchApplicationAtURL:options:configuration:error: that can be used to pass arguments to the app.

还有一些启动服务功能，例如 LSOpenItemsWithRole 。

There are also Launch Services functions such as LSOpenItemsWithRole.

AppleEvent到Finder要求它打开一些东西。

You could also send an AppleEvent to the Finder asking it to open something.

编辑添加：best是主观的，但我想说如果你可以使用NSWorkspace，使用它。如果你不能，例如，你需要传递命令行参数，你需要支持Leopard，然后使用启动服务。

EDIT TO ADD: "best" is subjective, but I'd say if you can use NSWorkspace, use it. If you can't, e.g., you need to pass command-line parameters and you need to support Leopard, then use Launch Services.

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