1 ios提供了内置的播放器
视频播放有三种方式:(都支持流媒体和本地视频播放)
- MPMoviePlayerController:可以改变大小(必须设置frame才能播放,需要添加到控制器视图上,并且可以监听通知:进度的改变,播放是否完成)
- MPMoviePlayerViewController:是一个特殊的视图控制器类,它包含了一个播放器 (MPMoviePlayerController),可直接播放,注意需要引入<MediaPlayer/MediaPlayer.h>框架
- AVPlayerViewContrller:它自带AVPlayer的播放器(必须初始化才能使用),需要设置frame,并添加到当前视图控制器上.并且还需要引入两个框架<AVKit/AVKit.h>和<AVFoundation/AVFoundation.h>
2 代码实现
现在故事板上分别放三个按钮:故事板绘制如下图:
故事板的绘制
代码:
#import "ViewController.h"
#import <MediaPlayer/MediaPlayer.h>
#import <AVKit/AVKit.h>
#import <AVFoundation/AVFoundation.h>
@interface ViewController (){
MPMoviePlayerController *movieController;
MPMoviePlayerViewController *movieViewController;
AVPlayerViewController *playerVC;
}
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (IBAction)movieController:(id)sender {
//添加通知
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(changeAction:) name:MPMoviePlayerPlaybackStateDidChangeNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(didFinishAction:) name:MPMoviePlayerPlaybackDidFinishNotification object:nil];
//网络加载视频
NSString *urlStr1 = @"http://vf1.mtime.cn/Video/2012/06/21/mp4/120621104820876931.mp4";
NSURL *url1 = [NSURL URLWithString:urlStr1];
//本地加载视频
NSString *urlStr = [[NSBundle mainBundle] pathForResource:@"video" ofType:@"mp4"];
NSURL *url = [NSURL fileURLWithPath:urlStr];
movieController = [[MPMoviePlayerController alloc] initWithContentURL:url];
movieController.view.frame = CGRectMake(50, 200, 300, 300);
[movieController prepareToPlay];
[movieController play];
[self.view addSubview:movieController.view];
}
- (IBAction)movieViewController:(id)sender {
//网络加载视频
NSString *urlStr1 = @"http://vf1.mtime.cn/Video/2012/06/21/mp4/120621104820876931.mp4";
NSURL *url1 = [NSURL URLWithString:urlStr1];
//本地加载视频
NSString *urlStr = [[NSBundle mainBundle] pathForResource:@"video" ofType:@"mp4"];
NSURL *url2 = [NSURL fileURLWithPath:urlStr];
movieViewController = [[MPMoviePlayerViewController alloc] initWithContentURL:url2];
[self presentViewController:movieViewController animated:YES completion:nil];
}
- (IBAction)AVMoviePlayerC:(id)sender {
//本地加载视频
NSString *urlStr1 = [[NSBundle mainBundle] pathForResource:@"video" ofType:@"mp4"];
NSURL *url1 = [NSURL fileURLWithPath:urlStr1];
//网络加载视频
NSString *urlStr = @"http://vf1.mtime.cn/Video/2012/06/21/mp4/120621104820876931.mp4";
NSURL *url = [NSURL URLWithString:urlStr];
playerVC = [[AVPlayerViewController alloc] init];
playerVC.view.frame = self.view.bounds;
playerVC.player = [[AVPlayer alloc] initWithURL:url];
[playerVC.player play];
[self.view addSubview:playerVC.view];
}
#pragma mark - 通知的方法
- (void) didFinishAction:(NSNotification *) notifi{
NSLog(@"播放完成");
}
- (void) changeAction:(NSNotification *) notifi {
MPMoviePlayerController *player = notifi.object;
MPMoviePlaybackState state = player.playbackState;
if (state == MPMoviePlaybackStatePaused) {
NSLog(@"暂停");
}else if (state == MPMoviePlaybackStateSeekingForward){
NSLog(@"快进");
}else if (state == MPMoviePlaybackStatePlaying){
NSLog(@"播放");
}
}
@end
视频播放
