iPhone 播放声音有问题？
这段代码有什么问题？我以前用过它，但现在收到这些警告...
警告：从不兼容的指针类型传递“AudioServicesCreateSystemSoundID”的参数 2
警告：传递“AudioServicesPlaySystemSound”的参数 1 从指针生成整数而不进行强制转换
-(void)playfireSound{
NSString *path = [[NSBundle mainBundle] pathForResource:@"fireSound" ofType:@"wav"];
NSURL *url = [NSURL fileURLWithPath:path];
AudioServicesCreateSystemSoundID((CFURLRef) url, &fireSound);
AudioServicesPlaySystemSound(fireSound);
}
What's wrong with this code? I've used it before but now I'm getting these warnings...
warning: passing argument 2 of 'AudioServicesCreateSystemSoundID' from incompatible pointer type
warning: passing argument 1 of 'AudioServicesPlaySystemSound' makes integer from pointer without a cast
-(void)playfireSound{
NSString *path = [[NSBundle mainBundle] pathForResource:@"fireSound" ofType:@"wav"];
NSURL *url = [NSURL fileURLWithPath:path];
AudioServicesCreateSystemSoundID((CFURLRef) url, &fireSound);
AudioServicesPlaySystemSound(fireSound);
}
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您的 fireSound 变量声明可能不适合与此 API 一起使用。也许您将其声明为某种类型的对象，而不是 int 类型的 SystemSoundID。
Your declaration of your fireSound variable is probably incorrect for use with this API. Maybe you declared it as an object of some sort, instead of as an SystemSoundID, which is of type int.