从 NSPasteboard mac 获取剪贴板的对象

Question

我需要获取NSPasteboard的对象并将其存储在某个位置，以便稍后将其放回剪贴板。我现在只使用text属性来执行此操作。我想知道如何对任何对象执行此操作(例如：复制文件(。到目前为止，这是我获取文本并将其放回的代码：

NSString *pasteboardString;
//Save the value of the pasteboard
NSPasteboard *pasteboard= [NSPasteboard generalPasteboard];
pasteboardString= [pasteboard stringForType:NSStringPboardType];
//Clear the pasteboard
[pasteboard clearContents];
//Do some stuff with clipboard
//Write the old object back
if(pasteboardString!= NULL || pasteboardString.length != 0){
[pasteboard declareTypes:[NSArray arrayWithObject:NSStringPboardType] owner:nil];
[pasteboard setString:pasteboardString forType:NSStringPboardType];
}

Answer 1

我找到的最简单的方法是获得所有NSPasteboardItems:的数组

- (NSArray *)readFromPasteBoard
{
NSMutableArray *pasteboardItems = [NSMutableArray array];
for (NSPasteboardItem *item in [pasteboard pasteboardItems]) {
//Create new data holder
NSPasteboardItem *dataHolder = [[NSPasteboardItem alloc] init];
//For each type in the pasteboard's items
for (NSString *type in [item types]) {
//Get each type's data and add it to the new dataholder
NSData *data = [[item dataForType:type] mutableCopy];
if (data) {
[dataHolder setData:data forType:type];
}
}
[pasteboardItems addObject:dataHolder];
}
return pasteboardItems;
}

从此页：从粘贴板中分离NSPasteboardItem

然后，您可以在剪贴板操作后用相同的数组写回粘贴板：[pasteboard writeObjects:arrayPasteboardItems];

这将放回之前复制的任何对象(甚至文件、文件夹等(。