在iOS中播放視頻可以使用MediaPlayer.framework種的MPMoviePlayerController類來完成，它支持本地視頻和網(wǎng)絡(luò)視頻播放。這個(gè)類實(shí)現(xiàn)了MPMediaPlayback協(xié)議，因此具備一般的播放器控制功能，例如播放、暫停、停止等。
但是MPMediaPlayerController自身并不是一個(gè)完整的視圖控制器，如果要在UI中展示視頻需要將view屬性添加到界面中。下面列出了MPMoviePlayerController的常用屬性和方法：

屬性1

屬性2

對象方法

通知

注意MPMediaPlayerController的狀態(tài)等信息并不是通過代理來和外界交互的，而是通過通知中心，因此從上面的列表中可以看到常用的一些通知。

由于MPMoviePlayerController本身對于媒體播放做了深度的封裝，使用起來就相當(dāng)簡單：
創(chuàng)建MPMoviePlayerController對象，設(shè)置frame屬性，將MPMoviePlayerController的view添加到控制器視圖中。下面的示例中將創(chuàng)建一個(gè)播放控制器并添加播放狀態(tài)改變及播放完成的通知：

//
//  ViewController.m
//  MPMoviePlayerController
//
//  Created by Kenshin Cui on 14/03/30.
//  Copyright (c) 2014年 cmjstudio. All rights reserved.
//

#import "ViewController.h"
#import <MediaPlayer/MediaPlayer.h>
#import <AVKit/AVKit.h>


@interface ViewController ()

@property (nonatomic,strong) MPMoviePlayerController *moviePlayer;//視頻播放控制器

@end

@implementation ViewController

#pragma mark - 控制器視圖方法
- (void)viewDidLoad {
    [super viewDidLoad];
    
    //播放
    [self.moviePlayer play];
    
    //添加通知
    [self addNotification];
    
}

-(void)dealloc{
    //移除所有通知監(jiān)控
    [[NSNotificationCenter defaultCenter] removeObserver:self];
}


#pragma mark - 私有方法
/**
 *  取得本地文件路徑
 *
 *  @return 文件路徑
 */
-(NSURL *)getFileUrl{
    NSString *urlStr=[[NSBundle mainBundle] pathForResource:@"movie.mp4" ofType:nil];
    NSURL *url=[NSURL fileURLWithPath:urlStr];
    return url;
}

/**
 *  取得網(wǎng)絡(luò)文件路徑
 *
 *  @return 文件路徑
 */
-(NSURL *)getNetworkUrl{
    NSString *urlStr= @"http://www.realank.com/movie.mp4";//@"http://mediaserver.enorth.com.cn:8083/videos/live/57/33/d3Hr2eCssqyV1/d3Hr2eCssqyV1.M3U8";
    urlStr=[urlStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
    NSURL *url=[NSURL URLWithString:urlStr];
    return url;
}

/**
 *  創(chuàng)建媒體播放控制器
 *
 *  @return 媒體播放控制器
 */
-(MPMoviePlayerController *)moviePlayer{
    if (!_moviePlayer) {
        NSURL *url=[self getFileUrl];
        _moviePlayer=[[MPMoviePlayerController alloc]initWithContentURL:url];
        _moviePlayer.repeatMode = MPMovieRepeatModeOne;
        _moviePlayer.view.frame=CGRectMake(20, 100, 300, 300);
        _moviePlayer.view.autoresizingMask=UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight;
        _moviePlayer.controlStyle = MPMovieControlStyleEmbedded;
        [self.view addSubview:_moviePlayer.view];
    }
    return _moviePlayer;
}

/**
 *  添加通知監(jiān)控媒體播放控制器狀態(tài)
 */
-(void)addNotification{
    NSNotificationCenter *notificationCenter=[NSNotificationCenter defaultCenter];
    [notificationCenter addObserver:self selector:@selector(mediaPlayerPlaybackStateChange:) name:MPMoviePlayerPlaybackStateDidChangeNotification object:self.moviePlayer];
    [notificationCenter addObserver:self selector:@selector(mediaPlayerPlaybackFinished:) name:MPMoviePlayerPlaybackDidFinishNotification object:self.moviePlayer];
    [notificationCenter addObserver:self selector:@selector(movieLoadStateChanged:) name:MPMoviePlayerLoadStateDidChangeNotification object:self.moviePlayer];
    
}

/**
 *  播放狀態(tài)改變，注意播放完成時(shí)的狀態(tài)是暫停
 *
 *  @param notification 通知對象
 */
-(void)mediaPlayerPlaybackStateChange:(NSNotification *)notification{
    switch (self.moviePlayer.playbackState) {
        case MPMoviePlaybackStatePlaying:
            NSLog(@"正在播放...");
            break;
        case MPMoviePlaybackStatePaused:
            NSLog(@"暫停播放.");
            break;
        case MPMoviePlaybackStateStopped:
            NSLog(@"停止播放.");
            break;
        default:
            NSLog(@"播放狀態(tài):%li",self.moviePlayer.playbackState);
            break;
    }
}

/**
 *  播放完成
 *
 *  @param notification 通知對象
 */
-(void)mediaPlayerPlaybackFinished:(NSNotification *)notification{
    NSLog(@"播放完成.%li",self.moviePlayer.playbackState);
}

-(void)movieLoadStateChanged:(NSNotification *)notification{
    if (self.moviePlayer.loadState == MPMovieLoadStateUnknown) {
        self.moviePlayer.contentURL = [self getFileUrl];
        [self.moviePlayer play];
    }
}

@end

因?yàn)橐曨l播放器全屏以后，會有快進(jìn)快退的按鈕，但是按了按鈕以后，會造成黑屏，所以增加了name:MPMoviePlayerLoadStateDidChangeNotification通知，并且當(dāng)
loadState為MPMovieLoadStateUnknown的時(shí)候，代碼強(qiáng)制重新播放視頻

當(dāng)全屏了視頻播放器以后，如果想支持橫屏播放，需要再appDelegate里添加對應(yīng)的方法：

//在didFinishLaunchingWithOptions中調(diào)用這個(gè)方法
- (void)addMoviePlaybackRotateNotification{
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayerWillEnterFullscreenNotification:) name:MPMoviePlayerWillEnterFullscreenNotification object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayerWillExitFullscreenNotification:) name:MPMoviePlayerWillExitFullscreenNotification object:nil];

}

- (void) moviePlayerWillEnterFullscreenNotification:(NSNotification*)notification {
    self.allowRotation = YES;
}

- (void) moviePlayerWillExitFullscreenNotification:(NSNotification*)notification {
    self.allowRotation = NO;
}

-(UIInterfaceOrientationMask)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window
{
    if (self.allowRotation) {
        
        return UIInterfaceOrientationMaskLandscapeRight | UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskLandscapeLeft;
    }
    return UIInterfaceOrientationMaskPortrait;
}

詳情查看stack overflow中的內(nèi)容