源码下载:http://download.csdn.net/detail/woshiwls/7548545
控制系统音量,自定义MPVolumeView(二)
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{
[[MPMusicPlayerController applicationMusicPlayer] setVolume:self.volumeSlider.value];
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
for(UITouch *touch in event.allTouches) {
self.firstPoint = [touch locationInView:self.view];
}
UISlider *slider = (UISlider *)[self.view viewWithTag:1000];
slider.value = self.slider.value;
NSLog(@"touchesBegan");
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{
for(UITouch *touch in event.allTouches) {
self.secondPoint = [touch locationInView:self.view];
}
NSLog(@"firstPoint==%f || secondPoint===%f",self.firstPoint.y,self.secondPoint.y);
NSLog(@"first-second==%f",self.firstPoint.y - self.secondPoint.y);
self.slider.value += (self.firstPoint.y - self.secondPoint.y)/500.0;
UISlider *slider = (UISlider *)[self.view viewWithTag:1000];
slider.value = self.slider.value;
NSLog(@"value == %f",self.slider.value);
self.firstPoint = self.secondPoint;
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{
NSLog(@"touchesEnded");
self.firstPoint = self.secondPoint = CGPointZero;
}