ipod等播放程序在后台时，双击HOME键，会有个控制界面，如上图，可以使用它进行播放控制。
如果需要直接使用多媒体控制键控制自己程序后台播放的音乐：
首先在viewdidload等初始化的地方声明App接收远程控制事件，并在相应地方结束声明
- (void) viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
[self becomeFirstResponder];
}
- (void) viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
[UIApplication sharedApplication] endReceivingRemoteControlEvents];
[self resignFirstResponder];
}
将本程序设为第一接收者
- (BOOL)canBecomeFirstResponder
{
return YES;
}
最后定义 remoteControlReceivedWithEvent，处理具体的播放、暂停、前进、后退等具体事件
- (void) remoteControlReceivedWithEvent: (UIEvent *) receivedEvent
{
if (receivedEvent.type == UIEventTypeRemoteControl)
{
switch (receivedEvent.subtype)
{
case UIEventSubtypeRemoteControlTogglePlayPause:
[self playButtonPressed:playButton];
[self testing];
break;
case UIEventSubtypeRemoteControlPreviousTrack:
[self rewButtonReleased:(UIButton *)rewButton];
break;
case UIEventSubtypeRemoteControlNextTrack:
[self ffwButtonReleased:(UIButton *)ffwButton];
break;
default:
break;
}
}
}
这样就能直接使用多媒体控制键控制自己程序后台播放的音乐了
by -yuzhang2