常用方法片段

QuickKit.mm

// 01. init method forbidden
- (id)init {
    @throw [NSException exceptionWithName:NSInternalInconsistencyException
                                   reason:@"-init is not a valid initializer for the class Foo"
                                 userInfo:nil];
    return nil;
}

// 04. Play sound

NSURL *soundurl  = [[NSBundle mainBundle] URLForResource: @"mysound" withExtension: @"caf"];
AVAudioPlayer *mySoundPlayer =[[AVAudioPlayer alloc] initWithContentsOfURL:soundurl error:&error];
mySoundPlayer .volume=0.4f; //between 0 and 1
[mySoundPlayer prepareToPlay];
mySoundPlayer.numberOfLoops=0; //or more if needed

[mySoundPlayer play];