Question

所以最初我打算制作的应用程序只在刷完时发出一个声音。代码是

[[SimpleAudioEngine sharedEngine] playEffect:@"Swoosh.mp3"];
CCMoveTo *moveto=[CCMoveTo actionWithDuration:0.50 position:ccp(currentSkewed.position.x, [UIScreen mainScreen].bounds.size.height+300)];
CCScaleTo *scalto=[CCScaleTo actionWithDuration:0.30 scale:0.5];
CCSequence *seq=[CCSequence actionOne:moveto two:[CCCallFuncN actionWithTarget:self selector:@selector(RemoveSprite:)]];
[currentSkewed runAction:seq];
[currentSkewed runAction:scalto];
[skewdArray removeObject:currentSkewed];
currentSkewed=nil;

我决定我想要在每次滑动时随机播放三种声音，而不仅仅是一种。所以这就是我所做的。

NSString *Soundname;

int randSound = arc4random() % 3;
switch (randSound) {
    case 0:
        Soundname = @"Swoosh1.mp3";
        break;
    case 1:
        Soundname = @"Swoosh2.mp3";
        break;
    case 2:
        Soundname = @"Swoosh3.mp3";
        break;

}
[[SimpleAudioEngine sharedEngine] playEffect:@"Soundname"];
CCMoveTo *moveto=[CCMoveTo actionWithDuration:0.50 position:ccp(currentSkewed.position.x, [UIScreen mainScreen].bounds.size.height+300)];
CCScaleTo *scalto=[CCScaleTo actionWithDuration:0.30 scale:0.5];
CCSequence *seq=[CCSequence actionOne:moveto two:[CCCallFuncN actionWithTarget:self selector:@selector(RemoveSprite:)]];
[currentSkewed runAction:seq];
[currentSkewed runAction:scalto];
[skewdArray removeObject:currentSkewed];
currentSkewed=nil;

我制作了弦乐，然后取代了playEffect：@＆＃34; Swoosh.mp3＆＃34;]; playEffect：@＆＃34; Soundname＆＃34;];

我尝试过Soundname的多种变体，但似乎没有人在工作。我是一位擅长编码的童话，我知道这是我所遗忘的愚蠢行为。有没有人有任何想法？

Answer 1

我很确定问题是因为你仍在为playEffect参数使用文字字符串，但你的目的是使用新定义的字符串变量。

尝试更改：

[[SimpleAudioEngine sharedEngine] playEffect:@"Soundname"];

到此（注意缺少引号）：

[[SimpleAudioEngine sharedEngine] playEffect:Soundname];

尝试使用SimpleAudioEngine播放随机声音，没有声音

1 个答案: