blocks|key|1615458|text|以下是该方法的工作版本：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1615459|-+(BOOL)+writeToPasteBoard:(NSString+*)stringToWrite
{
++++[pasteBoard+declareTypes:[NSArray+arrayWithObject:NSStringPboardType]+owner:nil];
++++return+[pasteBoard+setString:stringToWrite+forType:NSStringPboardType];
}|code-block|syntax|javascript|1615460|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Here is the working version of the method:

<pre><code>- (BOOL) writeToPasteBoard:(NSString *)stringToWrite
{
 [pasteBoard declareTypes:[NSArray arrayWithObject:NSStringPboardType] owner:nil];
 return [pasteBoard setString:stringToWrite forType:NSStringPboardType];
}
</code></pre>

blocks|key|1400770|text|苹果公司建议人们远离NSStringPboardType，转而使用NSPasteboardTypeString。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1400771|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Apple is suggesting people move away from NSStringPboardType and use NSPasteboardTypeString instead.

blocks|key|1400835|text|从10.6开始，以下实现也是可能的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1400836|-+(BOOL)+writeToPasteBoard:(NSString+*)stringToWrite
{
++++[pasteBoard+clearContents];
++++return+[pasteBoard+writeObjects:[NSArray+arrayWithObject:stringToWrite]];
}|code-block|syntax|javascript|1400837|需要注意的是，在将新内容写入粘贴板之前，必须调用#clearContents，否则#writeObjects:将一直返回NO。|1400838|对于符合NSPasteboardWriting协议的对象，新的#writeObjects:方法是可能的。还有一个NSPasteboardReading协议，但是使用它并不会使实现变得更简单。|1400839|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

As of 10.6, the following implementation is also possible:

<pre><code>- (BOOL) writeToPasteBoard:(NSString *)stringToWrite
{
 [pasteBoard clearContents];
 return [pasteBoard writeObjects:[NSArray arrayWithObject:stringToWrite]];
}
</code></pre>

It's important to notice that #clearContents has to be called before something new can be written to the pasteboard, otherwise #writeObjects: keeps returning NO.

The new #writeObjects: methods is possible for objects that conform to the NSPasteboardWriting protocol. There's also an NSPasteboardReading Protocol, but using it wouldn't make the implementation any simpler.

blocks|key|1400877|text|对于记录，要将字符串复制到系统剪贴板，可以使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1400878|NSPasteboard+*pasteBoard+=+[NSPasteboard+generalPasteboard];
[pasteBoard+declareTypes:[NSArray+arrayWithObject:NSStringPboardType]+owner:nil];
[pasteBoard+setString:string+forType:NSStringPboardType];|code-block|syntax|javascript|1400879|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

For the record, to copy a string to the system clipboard, you can use 

<pre><code>NSPasteboard *pasteBoard = [NSPasteboard generalPasteboard];
[pasteBoard declareTypes:[NSArray arrayWithObject:NSStringPboardType] owner:nil];
[pasteBoard setString:string forType:NSStringPboardType];
</code></pre>

blocks|key|1400906|text|Swift+2：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1400907|使用Swift+2将字符串复制到常规粘贴板：|1400908|let+pasteboard+=+NSPasteboard.generalPasteboard()
pasteboard.declareTypes([NSPasteboardTypeString],+owner:+nil)
pasteboard.setString("Hello",+forType:+NSPasteboardTypeString)|code-block|syntax|javascript|1400909|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

<h2>Swift 2:</h2>

Copy a string to the general pasteboard with Swift 2:

<pre><code>let pasteboard = NSPasteboard.generalPasteboard()
pasteboard.declareTypes([NSPasteboardTypeString], owner: nil)
pasteboard.setString("Hello", forType: NSPasteboardTypeString)
</code></pre>

blocks|key|1615657|text|Swift+4版本：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1615658|NSPasteboard.general.clearContents()
NSPasteboard.general.setString("Hello+World",+forType:+.string)|code-block|syntax|javascript|1615659|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Swift 4 version:

<pre><code>NSPasteboard.general.clearContents()
NSPasteboard.general.setString("Hello World", forType: .string)
</code></pre>

blocks|key|1615710|text|这在Mojave+10.14.5上有效，并且不使用任何不推荐使用的API：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1615711|NSPasteboard+*pasteboard+=+[NSPasteboard+generalPasteboard];
[pasteboard+declareTypes:[NSArray+arrayWithObjects:NSPasteboardTypeString,+nil]+owner:nil];
[pasteboard+setString:@"Hello+clipboard!"+forType:NSPasteboardTypeString];|code-block|syntax|javascript|1615712|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

This works on Mojave 10.14.5 and does not use any deprecated APIs:

<pre><code>NSPasteboard *pasteboard = [NSPasteboard generalPasteboard];
[pasteboard declareTypes:[NSArray arrayWithObjects:NSPasteboardTypeString, nil] owner:nil];
[pasteboard setString:@"Hello clipboard!" forType:NSPasteboardTypeString];
</code></pre>

I cannot get this method to return YES:

<pre><code>- (BOOL) writeToPasteBoard:(NSString *)stringToWrite
{
 return [pasteBoard setString:stringToWrite forType:NSStringPboardType];
}
</code></pre>

I have verified that stringToWrite is coming through properly, the method just always returns NO.

Any ideas?

Here is the rest of the class:

<pre><code>@interface ClipBoard : NSObject {
 NSPasteboard *pasteBoard;
}

- (BOOL) writeToPasteBoard:(NSString *)stringToWrite;
- (NSString *) readFromPasteBoard;
@end

@implementation ClipBoard
- (id) init
{
 [super init];
 pasteBoard = [NSPasteboard generalPasteboard];
 return self;
}

- (BOOL) writeToPasteBoard:(NSString *)stringToWrite
{
 return [pasteBoard setString:stringToWrite forType:NSStringPboardType];
}

- (NSString *) readFromPasteBoard
{
 return [pasteBoard stringForType:NSStringPboardType];
}
</code></pre>

@end

Writing a string to NSPasteBoard

Swift

我不能让这个方法返回YES：- (BOOL) writeToPasteBoard:(NSString *)stringToWrite{    return [pasteBoard setString:stringToWrite forType:NSStringPboardType];}我已经验证了stringToWri...

问将字符串写入NSPasteBoard
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