objective-c 多媒體 視頻播放 （9.0之前）

//

//  ViewController.m

//  媒體 視頻播放 9.0之前

//

//  Created by DC017 on 15/12/28.

//  Copyright © 2015年 DC017. All rights reserved.

//

#import "ViewController.h"

#import <MediaPlayer/MediaPlayer.h>

@interface ViewController ()

@property(nonatomic,strong)MPMoviePlayerController *moviePlayerController;

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    [self.moviePlayerController play];

    [self addNotification];

    [self suoluetu];   

}

-(MPMoviePlayerController*)moviePlayerController{

    if (!_moviePlayerController) {

        NSString * strurl=[[NSBundle mainBundle] pathForResource:@"田埂上的夢" ofType:@"mov"];

      NSURL *url=[NSURL fileURLWithPath:strurl];

     _moviePlayerController=[[MPMoviePlayerController alloc]initWithContentURL:url];

        _moviePlayerController.view.frame=self.view.frame;

        //自適應屏幕

        [self.view addSubview:_moviePlayerController.view];       _moviePlayerController.view.autoresizingMask=UIViewAutoresizingFlexibleWidth |UIViewAutoresizingFlexibleHeight;

    }

    return _moviePlayerController;

}

//添加通知中心

-(void)addNotification{

    //建立通知中心（通知中心爲單例模式）

    NSNotificationCenter * notificationCenter=[NSNotificationCenter defaultCenter];

    //播放狀態改變的通知

    [notificationCenter addObserver:self selector:@selector(zhuangtaigaibian:) name:MPMoviePlayerPlaybackStateDidChangeNotification object:self.moviePlayerController];

    //視頻播放完成時通知

    [notificationCenter addObserver:self selector:@selector(bofangwanchengtongzhi:) name:MPMoviePlayerPlaybackDidFinishNotification object:self.moviePlayerController];   

    //視頻縮略圖通知

    [notificationCenter addObserver:self selector:@selector(suolueotu:) name:MPMoviePlayerThumbnailImageRequestDidFinishNotification object:self.moviePlayerController];

    

}

-(void)zhuangtaigaibian:(NSNotification *)notification{

//判斷播放狀態

    switch (self.moviePlayerController.playbackState) {

        case MPMoviePlaybackStatePlaying:

            NSLog(@"正在播放");

           break;

            case MPMoviePlaybackStatePaused:

            NSLog(@"暫停播放");

            break;

            

            case MPMoviePlaybackStateStopped:

            NSLog(@"中止播放");

            break;

            

        default:

            NSLog(@"播放狀態爲%li",self.moviePlayerController.playbackState);

            break;

    }

}

-(void)bofangwanchengtongzhi:(NSNotification *)notification{

//播放完成

    NSLog(@"完成播放");

}

-(void)suoluetu{

//視頻縮略圖

    //參數1 第一個數組（傳入獲取圖片的時間點）參數2 時間選項 （獲取時間點附近最近的一幀）                                                     //注意小數點

    [self.moviePlayerController requestThumbnailImagesAtTimes:@[@6.5,@18.5] timeOption:MPMovieTimeOptionNearestKeyFrame];

}

-(void)suolueotu:(NSNotification * )notification{

//視頻縮略圖

    NSLog(@"視頻截圖完成");

    //取出照片

    UIImage *image=notification.userInfo[MPMoviePlayerThumbnailImageKey];

    //保存到相冊

    UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil);

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

-(void)dealloc{

    //移除全部的self裏的通知

    [[NSNotificationCenter defaultCenter]removeObserver:self];

    

}

@end