1、允许静音模式下播放声音
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback withOptions:AVAudioSessionCategoryOptionAllowBluetooth error:nil];
[[AVAudioSession sharedInstance] setActive:YES error:nil];
- (void)dealloc {
[[UIApplication sharedApplication] endReceivingRemoteControlEvents];
} }
2、实现声音控制
@property (nonatomic, strong)MPVolumeView *volumeView;
@property (nonatomic, strong)UISlider *volumeSlider;
[[AVAudioSession sharedInstance]outputVolume];
MPMusicPlayerController *musicPlayer = [MPMusicPlayerController applicationMusicPlayer];
if (([musicPlayer respondsToSelector:@selector(setVolume:)]) && [[[UIDevice currentDevice] systemVersion] floatValue] >= 13.0) {
//消除警告
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
if ([self getVolume] == 0) {
[musicPlayer setVolume:0.5];
}
#pragma clang diagnostic pop
}else {
// 低版本按照正常的设置依然不能控制音量 故使用了MPMusicPlayerController
if ([self getVolume] == 0) {
[musicPlayer setVolume:0.5];
}
}
- (MPVolumeView *)volumeView {
if (!_volumeView) {
_volumeView = [[MPVolumeView alloc] initWithFrame:CGRectZero];
// 将x、y设置成 -100 就会将音量界面隐藏
// 下面两行代码都会使音量界面重新显示
[_volumeView setHidden:YES];
[_volumeView removeFromSuperview];
[self.view addSubview:_volumeView];
}
return _volumeView;
}
- (UISlider*)volumeSlider {
UISlider* volumeSlider =nil;
for(UIView*view in[self.volumeView subviews]) {
if ([view.class.description isEqualToString:@"MPVolumeSlider"]){
volumeSlider = (UISlider*)view;
break;
}
}
return volumeSlider;
}
- (float)getVolume {
return self.volumeSlider.value > 0 ? self.volumeSlider.value : [[AVAudioSession sharedInstance] outputVolume];
}
这样 简单的静音模式下播放声音就实现了 内容可根据自身情况进行更改。demo地址
