NSWorkspace 为应用程序提供如下服务：
1）打开，操作文件/设备，获取文件/设备信息
2）跟踪文件，设备以及数据库的变动
3）设置或获取文件的 Finder 信息
4）启动应用程序。
NSWorkspace 是个 Singleton 类，我们通过 sharedWorkspace 来访问它。比如下面的语句用 TextEdit 打开指定的文件：
[[NSWorkspace sharedWorkspace] openFile:@"/Myfiles/README" withApplication:@"TextEdit"];
下面的代码演示了大部分 workspace 的应用，运行效果图如下：
- (IBAction) launchApplication:(id) sender
{
NSWorkspace * workspace = [NSWorkspace sharedWorkspace];
//BOOL wasLaunched = [workspace launchApplication:@"Safari"];
// launch without activation
//
BOOLwasLaunched = [workspace launchAppWithBundleIdentifier: @"com.apple.Safari"
options: NSWorkspaceLaunchWithoutActivation
additionalEventParamDescriptor: NULL
launchIdentifier: nil];
if( wasLaunched )
NSLog (@"Safari was launched");
else
NSLog (@"Safari was not launched");
NSArray * apps = [workspace valueForKeyPath:@"launchedApplications.NSApplicationName"];
self.launchedApplications = [NSString stringWithFormat:@"Launched Applications:\n%@", apps];
NSLog(@"Launched Applications:\n%@", apps);
}
- (IBAction) openPdfByDefault:(id) sender
{
NSString * path = @"/Developer/About Xcode and iOS SDK.pdf";
NSURL * fileURL = [NSURL fileURLWithPath: path];
NSWorkspace * workspace = [NSWorkspace sharedWorkspace];
[workspace openURL: fileURL];
}
- (IBAction) openPdfBySafari:(id) sender
{
NSString * path = @"/Developer/About Xcode and iOS SDK.pdf";
NSURL * fileURL = [NSURL fileURLWithPath: path];
NSWorkspace * workspace = [NSWorkspace sharedWorkspace];
[workspace openFile:[fileURL path] withApplication:@"Safari"];
}
- (IBAction) selectFileInFinder:(id) sender
{
NSString * path = @"/Developer/About Xcode and iOS SDK.pdf";
NSURL * fileURL = [NSURL fileURLWithPath: path];
NSWorkspace * workspace = [NSWorkspace sharedWorkspace];
[workspace selectFile:[fileURL path] inFileViewerRootedAtPath:nil];
}
- (IBAction) gatherFileInfo:(id) sender
{
NSString * path = @"/Developer/About Xcode and iOS SDK.pdf";
NSURL * fileURL = [NSURL fileURLWithPath: path];
NSWorkspace * workspace = [NSWorkspace sharedWorkspace];
NSString * appName;
NSString * fileType;
[workspace getInfoForFile: [fileURL path]
application: &appName
type: &fileType];
BOOLremovable = NO;
BOOLwriteable = NO;
BOOLunmountable = NO;
NSString *description;
NSString *fileSystemType;
[workspace getFileSystemInfoForPath:[fileURL path]
isRemovable: &removable
isWritable: &writeable
isUnmountable: &unmountable
description: &description
type: &fileSystemType];
self.fileInfo = [NSString stringWithFormat:
@"AppName: %@\ntype: %@"
@"\nremoveable: %d\nwriteable: %d\nunmountable: %d"
@"\ndescription: %@\nfileSystemType: %@",
appName, fileType,
removable, writeable, unmountable,
description, fileSystemType];
NSLog (@" >> gather file info:\n%@", self.fileInfo);
}
- (IBAction) copyFileToDesktop:(id) sender
{
NSString * name = @"About Xcode and iOS SDK.pdf";
NSArray * files = [NSArray arrayWithObject: name];
NSWorkspace * workspace = [NSWorkspace sharedWorkspace];
[workspace performFileOperation: NSWorkspaceCopyOperation
source: @"/Developer/"
destination: @"/Users/tianyouhui/Desktop/"
files: files
tag: 0];
}
- (IBAction) moveFileToTrash:(id) sender
{
NSString * name = @"About Xcode and iOS SDK.pdf";
NSArray * files = [NSArray arrayWithObject: name];
NSWorkspace * workspace = [NSWorkspace sharedWorkspace];
[workspace performFileOperation: NSWorkspaceRecycleOperation
source: @"/Users/tianyouhui/Desktop/"
destination: @""
files: files
tag: 0];
}
- (IBAction) gatherIconOfFile:(id) sender
{
NSString * path = @"/Developer/About Xcode and iOS SDK.pdf";
NSURL * fileURL = [NSURL fileURLWithPath: path];
NSWorkspace * workspace = [NSWorkspace sharedWorkspace];
self.icon = [workspace iconForFile: [fileURL path]];
//NSString * path = [workspace fullPathForApplication:@"Safari"];
//self.xcodeIcon = [workspace iconForFile: path];
self.xcodeIcon = [workspace iconForFileType:@"xcodeproj"];
}
- (IBAction) openUrlBySafari:(id) sender
{
NSURL * url = [NSURL URLWithString:@"http://blog.csdn.net/kesalin/"];
NSWorkspace * workspace = [NSWorkspace sharedWorkspace];
[workspace openURL: url];
}