0

我想创建一个可可应用程序来调用使用 C++ 编写的命令行工具。使用 Xcode 调用命令行工具时我可以做得很好。但是当我关闭 Xcode 时它失败了，双击应用程序并按更新按钮运行命令行工具。我已经厌倦了使用 NSTask 调用命令行工具，但它仍然失败。这是我的代码。

- (IBAction)Update:(id)sender {

[self performSelectorOnMainThread:@selector(IspUpdate) withObject:nil waitUntilDone:YES];
}

-(void)IspUpdate {
strCurDir = [[NSBundle mainBundle] bundlePath];
NSRange range = [strCurDir rangeOfString:@"/" options:NSBackwardsSearch];
NSRange rangeDir = NSMakeRange(0, range.location + 1);
strCurDir = [strCurDir substringWithRange:rangeDir];

NSString *strCmd = [strCurDir stringByAppendingString:@"ISPTool --isp --fw fw.bin --comm 6"];


dispatch_async(dispatch_get_global_queue(QOS_CLASS_UTILITY, 0), ^{

system([strCmd UTF8String]);
});
}
4

1 回答 1

0

请运行此演示，看看它是否与您尝试做的类似。该代码将允许您通过单击按钮在应用程序的终端窗口中运行 NSTask。将以下代码保存在名为“runCmd.m”的文件中，然后使用下面给出的说明从命令行编译：

/*
 Run from Terminal using: clang runCmd.m -fobjc-arc -framework Cocoa -o runCmd && ./runCmd
 Should print current calendar when 'RunCommand' button is hit.
*/

#import <Cocoa/Cocoa.h>

@interface AppDelegate : NSObject <NSApplicationDelegate> {
 NSWindow *window;
}
 -(void) runMyCmd;
 -(void) buildMenu;
 -(void) buildWindow;
@end

@implementation AppDelegate

- (void) runMyCmd {
 NSTask *task = [[NSTask alloc] init];
 [task setLaunchPath: @"/bin/sh"]; 
 NSArray *args = [NSArray arrayWithObjects: @"-c", @"cal", nil];
 [task setArguments: args];
 NSPipe *pipe = [NSPipe pipe];
 [task setStandardOutput: pipe];
 [task launch];
 [task waitUntilExit];
 NSData *data = [[pipe fileHandleForReading] readDataToEndOfFile];
 NSString *string = [[NSString alloc] initWithData: data encoding: NSUTF8StringEncoding];
 NSLog (@"\n%@",string);
}

- (void) buildMenu {
 NSMenu *menubar = [NSMenu new];
 NSMenuItem *menuBarItem = [NSMenuItem new];
 [menubar addItem:menuBarItem];
 [NSApp setMainMenu:menubar];
 NSMenu *appMenu = [NSMenu new];
 NSMenuItem *quitMenuItem = [[NSMenuItem alloc] initWithTitle:@"Quit"
 action:@selector(terminate:) keyEquivalent:@"q"];
 [appMenu addItem:quitMenuItem];
 [menuBarItem setSubmenu:appMenu];
}

- (void) buildWindow {

 #define _wndW  200
 #define _wndH  150

 window = [[NSWindow alloc] initWithContentRect: NSMakeRect( 0, 0, _wndW, _wndH )
 styleMask: NSWindowStyleMaskTitled | NSWindowStyleMaskMiniaturizable | NSWindowStyleMaskClosable | NSWindowStyleMaskResizable
 backing: NSBackingStoreBuffered defer: NO];
 [window center];
 [window setTitle: @"Test window"];
 [window makeKeyAndOrderFront: nil];

// **** RunCmdButton **** //
 NSButton *runBtn =[[NSButton alloc]initWithFrame:NSMakeRect( 30, 60, 135, 30 )];
 [runBtn setBezelStyle:NSBezelStyleRounded ];
 [runBtn setTitle: @"RunCommand"];
 [runBtn setAction: @selector(runMyCmd)];
 [[window contentView] addSubview: runBtn];

// **** Quit btn **** //
 NSButton *quitBtn = [[NSButton alloc]initWithFrame:NSMakeRect( _wndW - 50, 5, 40, 40 )];
 [quitBtn setBezelStyle:NSBezelStyleCircular ];
 [quitBtn setTitle: @"Q" ];
 [quitBtn setAutoresizingMask: NSViewMinXMargin];
 [quitBtn setAction:@selector(terminate:)];
 [[window contentView] addSubview: quitBtn];
}

- (void) applicationWillFinishLaunching: (NSNotification *)notification {
 [self buildMenu];
 [self buildWindow];
}

- (void) applicationDidFinishLaunching: (NSNotification *)notification {
}

@end

int main () {
 NSApplication *application = [NSApplication sharedApplication];
 AppDelegate *appDelegate = [[AppDelegate alloc] init];
 [application setDelegate:appDelegate];
 [application run];
 return 0;
}
于 2020-11-12T02:39:44.360 回答