#import <UIKit/UIKit.h>//加入头文件#import <AudioToolbox/AudioToolbox.h>@interface RootViewController : UIViewController{    NSString *soundFile;}@end

- (void)viewDidLoad{    [super viewDidLoad];    // Do any additional setup after loading the view.        NSArray *titleArray=[[NSArray alloc]initWithObjects:@"DO",@"RE",@"MI",@"FA",@"SO",@"LA",@"SI",@"C",@"D",@"E",@"F",@"G", nil];        for (int i=0; i<12; i++) {        UIButton *button=[[UIButton alloc]initWithFrame:CGRectMake(50, 80+30*i, 70, 20)];        [button setTitle:[titleArray objectAtIndex:i] forState:UIControlStateNormal];        [button addTarget:self action:@selector(doClickAction:) forControlEvents:UIControlEventTouchUpInside];        button.tag=i;        button.backgroundColor=[UIColor redColor];        [self.view addSubview:button];    }    }#pragma -mark -fucntions-(void)playSound:(NSString*)soundKey{        NSString *path = [NSString stringWithFormat:@"%@%@",[[NSBundle mainBundle] resourcePath],soundKey];    SystemSoundID soundID;    NSURL *filePath = [NSURL fileURLWithPath:path isDirectory:NO];    AudioServicesCreateSystemSoundID((__bridge CFURLRef)filePath, &soundID);    AudioServicesPlaySystemSound(soundID);    }#pragma -makr -doClickActions-(void)doClickAction:(UIButton *)btn{    NSLog(@"---doClickActions--");    NSLog(@"--btn.tag---%i",btn.tag);        if (btn.tag==0) {        soundFile = [NSString stringWithFormat:@"/001.mp3"];        [self playSound: soundFile];    }else if (btn.tag==1){        soundFile = [NSString stringWithFormat:@"/002.mp3"];        [self playSound: soundFile];    }else if (btn.tag==2){        soundFile = [NSString stringWithFormat:@"/003.mp3"];        [self playSound: soundFile];    }else if (btn.tag==3){        soundFile = [NSString stringWithFormat:@"/004.mp3"];        [self playSound: soundFile];    }else if (btn.tag==4){        soundFile = [NSString stringWithFormat:@"/005.mp3"];        [self playSound: soundFile];    }else if (btn.tag==5){        soundFile = [NSString stringWithFormat:@"/006.mp3"];        [self playSound: soundFile];    }else if (btn.tag==6){        soundFile = [NSString stringWithFormat:@"/007.mp3"];        [self playSound: soundFile];    }else if (btn.tag==7){        soundFile = [NSString stringWithFormat:@"/C.mp3"];        [self playSound: soundFile];    }else if (btn.tag==8){        soundFile = [NSString stringWithFormat:@"/D.mp3"];        [self playSound: soundFile];    }else if (btn.tag==9){        soundFile = [NSString stringWithFormat:@"/E.mp3"];        [self playSound: soundFile];    }else if (btn.tag==10){        soundFile = [NSString stringWithFormat:@"/F.mp3"];        [self playSound: soundFile];    }else if (btn.tag==11){        soundFile = [NSString stringWithFormat:@"/G.mp3"];        [self playSound: soundFile];    }}