iOS - 音频和视频

音频和视频在最新设备中非常普遍。它在 iOS 中分别借助 AVFoundation.framework 和 MediaPlayer.framework 得到支持。

涉及的步骤

步骤 1 − 创建一个简单的View based application 基于视图的应用程序。

步骤 2 − 选择您的项目文件，选择目标，然后我们应该添加 AVFoundation.framework 和 MediaPlayer.framework。

步骤 3 − 在 ViewController.xib 中添加两个按钮，分别创建一个播放音频和视频的动作。

步骤 4 − 更新 ViewController.h 如下 −

实例


#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

步骤 5 − 更新 ViewController.m 如下 −

实例


#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