我的桌子下面有经典的+ - 按钮。 (在mac上) 我想按下+按钮,然后打开一个小的查找器来选择一个文件,将其添加到桌面上。
我该怎么做? 我搜索了开发人员参考,但没有找到它..
答案 0 :(得分:2)
使用NSOpenPanel
。
有关处理文件和使用打开面板的指南,请参阅Application File Management指南。
例如:
- (IBAction)addFile:(id)sender
{
NSInteger result;
NSArray *fileTypes = [NSArray arrayWithObject:@"html"];
NSOpenPanel *oPanel = [NSOpenPanel openPanel];
[oPanel setAllowsMultipleSelection:YES];
[oPanel setDirectory:NSHomeDirectory()];
[oPanel setCanChooseDirectories:NO];
result = [oPanel runModal];
if (result == NSFileHandlingPanelOKButton) {
for (NSURL *fileURL in [oPanel URLs]) {
// do something with fileURL
}
}
}
使用工作表的另一个例子:
- (IBAction)addFile:(id)sender
{
NSArray *fileTypes = [NSArray arrayWithObject:@"html"];
NSOpenPanel *oPanel = [NSOpenPanel openPanel];
[oPanel setAllowsMultipleSelection:YES];
[oPanel setDirectory:NSHomeDirectory()];
[oPanel setCanChooseDirectories:NO];
[oPanel beginSheetModalForWindow:[self window]
completionHandler:^(NSInteger result) {
if (result == NSFileHandlingPanelOKButton) {
for (NSURL *fileURL in [oPanel URLs]) {
// do something with fileURL
}
}
}];
}