objective-c - 获取并选择路径 Objective C

Question

这就是我所拥有的：

如何使标签包含桌面的当前路径，以及如何使其在他们点击选择时，他们可以选择安装位置，然后将标签设置为包含该路径？谢谢！

Answer 1

-(IBAction) choose : (id)sender;
{
    NSOpenPanel *panel = [NSOpenPanel openPanel];
    [panel setCanChooseDirectories:YES];  
if ([panel respondsToSelector:@selector(beginWithCompletionHandler:)]) { 
//Mac OS X 10.6 and later
    [panel beginWithCompletionHandler:^(NSInteger result) {
        if (result == NSFileHandlingPanelOKButton) {    // Only if not cancelled
            NSArray *urls = [panel URLs];
            [text setStringValue:[[urls objectAtIndex:0]path]];
            [panel orderOut:nil];  

        }
    }];
}
else{

        NSInteger result    = [panel runModal];
        if (result == NSFileHandlingPanelOKButton) {
            NSArray *urls = [panel URLs];
       [text setStringValue:[[urls objectAtIndex:0]path]];
            [panel orderOut:nil];   
        }
}
}  

- (void) awakeFromNib
{
NSString *docsDir = [NSHomeDirectory() stringByAppendingPathComponent:  @"Desktop"];
[text setStringvalue: docsDir];
}