一、视频
- 视频播放器需要添加MediaPlayer.framework.
- 视频播放主要提供了两个类，一个MPMoviePlayerController, 另一个是MPMoviePlayerViewController.
- 视频资源可以从本地获得，也可以从服务器获得。
MPMoviePlayerController播放本地视频资源(本地资源URL出现汉字不能编码)
NSString *path = [[NSBundle mainBundle]pathForResource:@"root" ofType:@"mp4"]; NSURL *url = [NSURL fileURLWithPath:path]; _playcontroller = [[MPMoviePlayerController alloc]initWithContentURL:url]; _playcontroller.view.frame = CGRectMake(0, 100, 320, 300); [_playcontroller play]; [self.view addSubview:_playcontroller.view];
MPMoviePlayerController播放网络资源（服务器为自己搭建，地址不可使用，连接服务器的URL，出现汉字需要编码）
str = [str stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]//编码方法
NSURL *url = [NSURL URLWithString:@"http://localhost:8080/media/root.mp4"]; _playcontroller.view.frame = CGRectMake(0, 100, 320, 300);
[_playcontroller play]; [self.view addSubview:_playcontroller.view];
可以加一个通知，在视频播放完毕的时候发出通知，将视图从界面上移除。
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(removeMedia) name:MPMoviePlayerPlaybackDidFinishNotification object:nil];
}
-(void)removeMedia
{
[_playcontroller.view removeFromSuperview];
}
MPMoviePlayerViewController播放视频资源
NSURL *url = [NSURL URLWithString:@"http://localhost:8080/media/root.mp4"]; MPMoviePlayerViewController *player = [[MPMoviePlayerViewController alloc]initWithContentURL:url]; [self presentViewController:player animated:YES completion:nil];
效果图：
MPMoviePlayerViewController如何让视频横屏播放。
横屏播放，需要继承MPMoviePlayerViewController这个类。假设myMPMoviePlayerViewController继承这个类。
我们需要在myMPMoviePlayerViewController中实现两个方法。
-(BOOL)shouldAutorotate
{
return YES;
}
-(NSUInteger)supportedInterfaceOrientations
{
return UIInterfaceOrientationMaskLandscape;
}
然后在实现下面代码：
NSURL *url = [NSURL URLWithString:@"http://localhost:8080/media/root.mp4"]; myMPMoviePlayerViewController *player = [[myMPMoviePlayerViewController alloc]initWithContentURL:url]; [self presentViewController:player animated:YES completion:nil];
效果图为：
二、音频
音频的话，我们需要框架AVFoundation.framework
音频的话，一般需要使用进度条显示音频播放的进度。
@interface ViewController : UIViewController
{
//音频播放器
AVAudioPlayer * _audioPalyer;
IBOutlet UISlider *_slider;
float currentProgress;
NSTimer *_timer;
}
- (IBAction)playButton:(id)sender;
- (IBAction)stopButton:(id)sender;
@end
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
_slider.value = 0.0;
}
- (IBAction)playButton:(id)sender
{
_timer = [NSTimer scheduledTimerWithTimeInterval:1.0f target:self selector:@selector(moveSlide) userInfo:nil repeats:YES];
NSString *path = [[NSBundle mainBundle]pathForResource:@"1" ofType:@"mp3"];
NSData *data = [NSData dataWithContentsOfFile:path];
_audioPalyer = [[AVAudioPlayer alloc]initWithData:data error:nil];
[_audioPalyer play];
_slider.maximumValue = _audioPalyer.duration;
[_slider addTarget:self action:@selector(changeSlide) forControlEvents:UIControlEventValueChanged];
}
-(void)changeSlide
{
_audioPalyer.currentTime = _slider.value;
}
-(void)moveSlide
{
_slider.value = _audioPalyer.currentTime;
}
- (IBAction)stopButton:(id)sender
{
UIButton *button = (UIButton *)sender;
if (button.tag == 0)
{
[_audioPalyer pause];
[button setTitle:@"继续播放" forState:UIControlStateNormal];
button.tag = 1;
[_timer invalidate];
_timer = nil;
}
else
{
[_audioPalyer play];
[button setTitle:@"暂停" forState:UIControlStateNormal];
button.tag = 0;
[_slider addTarget:self action:@selector(changeSlide) forControlEvents:UIControlEventValueChanged];
}
}
效果图：