如何在Mac上的可可应用程序中启动和终止应用程序

Question

我的可可应用程序需要启动和终止其他应用程序。请让我知道的任何示例代码，可以做到以下几点：

1. 从可可代码中启动应用程序
2. 从可可码内终止应用程序

Answer 1

要启动一个应用程序：

[[NSWorkspace sharedWorkspace] launchApplication:@"App"]; 

从http://forums.macnn.com/79/developer-center/134947/launch-another-application-from-cocoa/

要退出：

的NSApplication有-terminate：方法：[NSApp terminate: nil];

从How can I tell my Cocoa application to quit from within the application itself?

Answer 2

假设这是针对10.6，您可以使用NSRunningApplication与NSWorkspace一起。首先，你应该确定应用程序使用已经运行：

[[NSWorkspace sharedWorkspace] runningApplications] 

如果它没有运行，那么你可以使用NSWorkspace启动它，但我建议较新的呼叫，launchApplicationAtURL:options:configuration:error:，它会返回一个NSRunningApplication，你可以用来终止应用程序。有关更多详细信息，请参阅NSWorkspace。

Answer 3

正如前面提到的它很容易启动其他应用程序与NSWorkspace类的帮助，例如：

- (BOOL)launchApplicationWithPath:(NSString *)path 
{ 
    // As recommended for OS X >= 10.6. 
    if ([[NSWorkspace sharedWorkspace] respondsToSelector:@selector(launchApplicationAtURL:options:configuration:error:)]) 
     return nil != [[NSWorkspace sharedWorkspace] launchApplicationAtURL:[NSURL fileURLWithPath:path isDirectory:NO] options:NSWorkspaceLaunchDefault configuration:nil error:NULL]; 

    // For older systems. 
    return [[NSWorkspace sharedWorkspace] launchApplication:path]; 
} 

你必须做更多的工作，以退出其他应用程序，尤其是如果目标是在10.6之前，但不是太难。这里是一个例子：

- (BOOL)terminateApplicationWithBundleID:(NSString *)bundleID 
{ 
    // For OS X >= 10.6 NSWorkspace has the nifty runningApplications-method. 
    if ([[NSWorkspace sharedWorkspace] respondsToSelector:@selector(runningApplications)]) 
     for (NSRunningApplication *app in [[NSWorkspace sharedWorkspace] runningApplications]) 
      if ([bundleID isEqualToString:[app bundleIdentifier]]) 
       return [app terminate]; 

    // If that didn‘t work then try using the apple event method, also works for OS X < 10.6. 

    AppleEvent event = {typeNull, nil}; 
    const char *bundleIDString = [bundleID UTF8String]; 

    OSStatus result = AEBuildAppleEvent(kCoreEventClass, kAEQuitApplication, typeApplicationBundleID, bundleIDString, strlen(bundleIDString), kAutoGenerateReturnID, kAnyTransactionID, &event, NULL, ""); 

    if (result == noErr) { 
     result = AESendMessage(&event, NULL, kAEAlwaysInteract|kAENoReply, kAEDefaultTimeout); 
     AEDisposeDesc(&event); 
    } 
    return result == noErr; 
}