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                # IOS音頻和視頻(Audio & Video) ### 簡介 音頻和視頻在最新的設備中頗為常見。 將iosAVFoundation.framework和MediaPlayer.framework添加到Xcode項目中,可以讓IOS支持音頻和視頻(Audio & Video)。 ### 實例步驟 1、創建一個簡單的View based application 2、選擇項目文件、選擇目標,然后添加AVFoundation.framework和MediaPlayer.framework 3、在ViewController.xib中添加兩個按鈕,創建一個用于分別播放音頻和視頻的動作(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 ``` ### 注意項 需要添加音頻和視頻文件,以確保獲得預期的輸出 ### 輸出 運行該程序,得到的輸出結果如下 ![AudioVideo_Output](https://box.kancloud.cn/2015-12-13_566ce8a588a7a.jpg) 當我們點擊 play video(播放視頻)顯示如下: ![video_Output](https://box.kancloud.cn/2015-12-13_566ce8a59803b.jpg)
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