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一，系统音量获取
系统框架
#import <AVFoundation/AVFoundation.h>
#import <MediaPlayer/MediaPlayer.h>
#import <AVKit/AVKit.h>
获取系统音量slider
- (MPVolumeView *)volumeView {
if (_volumeView == nil) {
_volumeView = [[MPVolumeView alloc] init];
[_volumeView sizeToFit];
#warning 获取系统的音量的UISlider
for (UIView *view in [_volumeView subviews]){
if ([view.class.description isEqualToString:@"MPVolumeSlider"]){
self.volumeViewSlider = (UISlider*)view;
break;
}
}
}
return _volumeView;
}
监听系统物理按键调节音量
/** 监听 */
- (void)registerVolumeChangeEvent {
// NSError *error;
// [[AVAudioSession sharedInstance] setActive:YES error:&error];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(changeVolumeValueFunc) name:@"AVSystemController_SystemVolumeDidChangeNotification" object:nil];
}
/** 移除 */
- (void)unregisterVolumeChangeEvent {
[[NSNotificationCenter defaultCenter] removeObserver:self name:@"AVSystemController_SystemVolumeDidChangeNotification" object:nil];
}
获取系统当前音量
[[AVAudioSession sharedInstance] outputVolume];
二，屏幕亮度
很简单就一句
[[UIScreen mainScreen] setBrightness:值（0 ~ 1）]
//示例
if (panPoint.y < 0) {
//增加亮度
[[UIScreen mainScreen] setBrightness:self.startVB + (-panPoint.y / 30.0 / 10)];
} else {
//减少亮度
[[UIScreen mainScreen] setBrightness:self.startVB - (panPoint.y / 30.0 / 10)];
}
