有没有办法使我的应用程序响应Mac上的播放/暂停按钮?
编辑:
使用建议的代码,我得到了这个控制台消息:
无法将动作buttonPressed:连接到类NSApplication的目标
为什么会这样?
有没有办法使我的应用程序响应Mac上的播放/暂停按钮?
编辑:
使用建议的代码,我得到了这个控制台消息:
无法将动作buttonPressed:连接到类NSApplication的目标
为什么会这样?
通过子类化 NSApplication(并将应用程序的主类设置为此子类),我在自己的应用程序中完成了此操作。它捕获寻求和播放/暂停键,并将它们转换为我的应用程序委托中的特定操作。
相关代码:
#import <IOKit/hidsystem/ev_keymap.h>
- (void)sendEvent:(NSEvent *)event
{
// Catch media key events
if ([event type] == NSSystemDefined && [event subtype] == 8)
{
int keyCode = (([event data1] & 0xFFFF0000) >> 16);
int keyFlags = ([event data1] & 0x0000FFFF);
int keyState = (((keyFlags & 0xFF00) >> 8)) == 0xA;
// Process the media key event and return
[self mediaKeyEvent:keyCode state:keyState];
return;
}
// Continue on to super
[super sendEvent:event];
}
- (void)mediaKeyEvent:(int)key state:(BOOL)state
{
switch (key)
{
// Play pressed
case NX_KEYTYPE_PLAY:
if (state == NO)
[(TSAppController *)[self delegate] togglePlayPause:self];
break;
// Rewind
case NX_KEYTYPE_FAST:
if (state == YES)
[(TSAppController *)[self delegate] seekForward:self];
break;
// Previous
case NX_KEYTYPE_REWIND:
if (state == YES)
[(TSAppController *)[self delegate] seekBack:self];
break;
}
}
编辑:
Swift 4:
override func sendEvent(_ event: NSEvent)
{
if event.type == .systemDefined &&
event.subtype == .screenChanged
{
let keyCode : Int32 = (Int32((event.data1 & 0xFFFF0000) >> 16))
let keyFlags = (event.data1 & 0x0000FFFF)
let keyState = ((keyFlags & 0xFF00) >> 8) == 0xA
self.mediaKeyEvent(withKeyCode: keyCode, andState: keyState)
return
}
super.sendEvent(event)
}
private func mediaKeyEvent(withKeyCode keyCode : Int32, andState state : Bool)
{
guard let delegate = self.delegate as? AppDelegate else { return }
switch keyCode
{
// Play pressed
case NX_KEYTYPE_PLAY:
if state == false
{
delegate.musicPlayerWC.handleUserPressedPlayButton()
}
break
// Rewind
case NX_KEYTYPE_FAST:
if state == true
{
delegate.musicPlayerWC.handleUserPressedNextSongButton()
}
break
// Previous
case NX_KEYTYPE_REWIND:
if state == true
{
delegate.musicPlayerWC.handleUserPressedPreviousSongButton()
}
break
default:
break
}
}
请查看:https://gist.github.com/gauravk92/546311 完美运作。
例如,这个仓库使用它:https://github.com/onepill/PauseIt