如何用（IBAction）playound播放声音:( id）发送者

Question

我试图用按钮发出声音。由于缺乏了解，我已经达到了停止点。我尝试了大约4个小时试图解决这个问题，但无济于事。有人能帮我吗？我收到错误，“使用未声明的标识符'soundFile '”这里是我的.m文件..

//
//  FirstViewController.m
//  simpleApp
//
//  Created by Abby Russell on 11/29/13.
//  Copyright (c) 2013 Abby Russell. All rights reserved.
//

#import "FirstViewController.h"

@interface FirstViewController ()

@end

@implementation FirstViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (IBAction)playsound:(id)sender {
    SystemSoundID soundID;
    NSString *buttonName=[sender currentTitle];
    NSString *path = [[NSBundle mainBundle] pathForResource:buttonName ofType:@"wav"];

    AudioServicesCreateSystemSoundID((__bridge CFURLRef)
                                     [NSURL fileURLWithPath: soundFile], &
                                     soundID;
    AudioServicesPlaySystemSound(soundID);


}
@end

非常感谢聪明的人！

Answer 1

soundFile需要是声音文件的NSString路径。看起来你刚刚输入了文本“soundFile”而没有任何名为soundFile的NSString。尝试用“path”替换soundFile。