iphone - 摇一摇…iOS

Question

因此，我有一个IBAction yesNo，希望在震动事件中运行。不太清楚为什么这不起作用。遵循了所有文档。

-(BOOL)canBecomeFirstResponder
{
    return YES;
}

- (void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event 
{
    if (event.subtype == UIEventSubtypeMotionShake)
    {
        [self yesNo];
    }
}

然后，IBAction本身:

- (IBAction)yesNo 
{
    int rNumber = rand() % 26;  
    NSUserDefaults *def=[NSUserDefaults standardUserDefaults];
    if ([[def objectForKey:@"activeVersion"] isEqualToString:@"0"])
    {
        switch (rNumber) {
            case 0:
                result.text  = @"Never";
                break;
            case 1:
                result.text = @"If you're lucky...";
                break;
            case 3:
                result.text = @"Think twice";
                break;
            ...
            default:
                break;
        }
    }
    else if ([[def objectForKey:@"activeVersion"] isEqualToString:@"1"])
    {
        switch (rNumber) {
            case 0:
                result.text  = @"Never1";
                break;
            case 1:
                result.text = @"If you're lucky...1";
                break;
            ...
            case 25:
                result.text = @"Very doubtful2";
                break;

            default:
                break;
        }
    }
    else if ([[def objectForKey:@"activeVersion"] isEqualToString:@"3"])
    {
        switch (rNumber) {
        case 0:
            result.text  = @"Never3";
            break;
        ...
        case 25:
            result.text = @"Very doubtful3";
            break;

        default:
            break;
    }
}   
}

基本上，我拥有的是算命球类型的东西，当iPhone摇动时，我需要运行IBAction。

Answer 1

您是否已将该观点视为第一响应者？即[yourView becomeFirstResponder];(可能来自某种viewDidAppear:方法)。
摇动设备时，您可能需要检查它是否真的是第一响应者。