IOS音频和视频(Audio & Video)

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简介

音频和视频在最新的设备中颇为常见。

将iosAVFoundation.framework和MediaPlayer.framework添加到Xcode项目中，可以让IOS支持音频和视频(Audio & Video)。

实例步骤

1、创建一个简单的View based application

2、选择项目文件、选择目标，然后添加AVFoundation.framework和MediaPlayer.framework

3、在ViewController.xib中添加两个按钮，创建一个用于分别播放音频和视频的动作（action）

4、更新ViewController.h,如下所示

#import <UIKit/UIKit.h>

#import <AVFoundation/AVFoundation.h>

#import <MediaPlayer/MediaPlayer.h>



@interface ViewController : UIViewController

{

    AVAudioPlayer *audioPlayer;

    MPMoviePlayerViewController *moviePlayer;

    

}

-(IBAction)playAudio:(id)sender;

-(IBAction)playVideo:(id)sender;

@end

5、更新ViewController.m，如下所示

#import "ViewController.h"



@interface ViewController ()



@end



@implementation ViewController



- (void)viewDidLoad

{

    [super viewDidLoad];

}



- (void)didReceiveMemoryWarning

{

   [super didReceiveMemoryWarning];

   // Dispose of any resources that can be recreated.

}

-(IBAction)playAudio:(id)sender{

   NSString *path = [[NSBundle mainBundle]

   pathForResource:@"audioTest" ofType:@"mp3"];

   audioPlayer = [[AVAudioPlayer alloc]initWithContentsOfURL:

   [NSURL fileURLWithPath:path] error:NULL];

   [audioPlayer play];

}

-(IBAction)playVideo:(id)sender{

   NSString *path = [[NSBundle mainBundle]pathForResource:

   @"videoTest" ofType:@"mov"];

   moviePlayer = [[MPMoviePlayerViewController 

   alloc]initWithContentURL:[NSURL fileURLWithPath:path]];

   [self presentModalViewController:moviePlayer animated:NO];

}

@end

注意项

需要添加音频和视频文件，以确保获得预期的输出

输出

运行该程序，得到的输出结果如下

当我们点击 play video(播放视频)显示如下：