iPhone播放声音文件的例子

本文主要是介绍iPhone播放声音文件的例子，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

本文演示如何使用Objective-C开发播放mp3文件的iPhone程序，当然本文目的不是要让你做一个iPhone版的播放器，因为这根本用不着你，iPod程序已经很好了。本文的目的是要让你能够在自己的游戏中使用音乐。

效果图如下：

1.打开xcode，创建一个名为TalkingDemo的View-based Application类型的iPhone程序。

2.如果要使用播放声音的功能，一定要引入AVFoundation库，右击项目中的Frameworkds目录，从菜单中选择Add->Existing Frameworkd，下图所示：

此操作将打开浏览库的对话框，我们选择名为AVFoundation.framework的库，并把它添加进来。

3.修改TalkingDemoViewController.h文件内容如下：

#import <UIKit/UIKit.h>
#import <AVFoundation/AVFoundation.h>

@interface TalkingDemoViewController : UIViewController {
AVAudioPlayer *player;

}

-(IBAction)sayTalking:(id)sender;

@end

4.双击TalkingDemoViewController.xib文件打开InterfaceBuilder，拖入一个Round Rect Button组件，并将这个组件分别绑定为btn（如果你还不会绑定InterfaceBuilder组件到Objective-C代码，请看iPhone按钮的使用），然后将按钮的标签修改为“播放音乐”

5.修改TalkingDemoViewController.m文件的内容如下所示：

#import "TalkingDemoViewController.h"

@implementation TalkingDemoViewController
// Implement viewDidLoad to do additiona    l setup after loading the view, typically from a nib.
- (void)viewDidLoad {
    if (player) {
        [player release];
    }
    NSString *soundPath=[[NSBundle mainBundle] pathForResource:@"intro" ofType:@"caf"];
    NSURL *soundUrl=[[NSURL alloc] initFileURLWithPath:soundPath];
    player=[[AVAudioPlayer alloc] initWithContentsOfURL:soundUrl error:nil];
    [player prepareToPlay];
    [soundUrl release];
    [super viewDidLoad];
}

-(IBAction)sayTalking:(id)sender
{
    NSLog(@"播放声音");
    [player play];

}
// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    return YES;
}

- (void)didReceiveMemoryWarning {
    // Releases the view if it doesn’t have a superview.
    [super didReceiveMemoryWarning];
    // Release any cached data, images, etc that aren’t in use.
}

- (void)viewDidUnload {
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
}

- (void)dealloc {
    [player release];
    [super dealloc];
}

@end