如何处理来自超类的UIViewController子类中的方法

Question

我正在创建一个名为myapp的基于am视图的应用程序。

我正在向myapp添加一个名为mysubclass的UIViewController子类。

在mysubclass中，我正在制作一些图像的动画。我在mysubclass中的代码如下所示：

-(void) onTimer {


    balloon.center = CGPointMake(balloon.center.x,balloon.center.y+pos.y);
    balloon1.center = CGPointMake(balloon1.center.x,balloon1.center.y+pos1.y);
    balloon2.center = CGPointMake(balloon2.center.x,balloon2.center.y+pos2.y);
    balloon3.center = CGPointMake(balloon3.center.x,balloon3.center.y+pos3.y);
    balloon4.center = CGPointMake(balloon4.center.x,balloon4.center.y+pos4.y);
    balloon5.center = CGPointMake(balloon5.center.x,balloon5.center.y+pos5.y);

        if(balloon.center.y > 420 || balloon.center.y < 25)
        pos.y = -pos.y;


    if(balloon1.center.y > 420 || balloon1.center.y < 25)
        pos1.y = -pos1.y;


    if(balloon2.center.y > 420 || balloon2.center.y < 25)
        pos2.y = -pos2.y;

    if(balloon3.center.y > 420 || balloon3.center.y < 25)
        pos3.y = -pos3.y;


    if(balloon4.center.y > 420 || balloon4.center.y < 25)
        pos4.y = -pos4.y;


    if(balloon5.center.y > 420 || balloon5.center.y < 25)
        pos5.y = -pos5.y;

}

我像这样调用这个方法：

以同样的方式，我需要反转pos.y =320的位置。我的代码如下所示。

 -(void) onTimer1 {


        balloon.center = CGPointMake(balloon.center.x,balloon.center.y+pos.y);
        balloon1.center = CGPointMake(balloon1.center.x,balloon1.center.y+pos1.y);
        balloon2.center = CGPointMake(balloon2.center.x,balloon2.center.y+pos2.y);
        balloon3.center = CGPointMake(balloon3.center.x,balloon3.center.y+pos3.y);
        balloon4.center = CGPointMake(balloon4.center.x,balloon4.center.y+pos4.y);
        balloon5.center = CGPointMake(balloon5.center.x,balloon5.center.y+pos5.y);

            if(balloon.center.y > 320 || balloon.center.y < 25)
            pos.y = -pos.y;


        if(balloon1.center.y > 320 || balloon1.center.y < 25)
            pos1.y = -pos1.y;


        if(balloon2.center.y > 320 || balloon2.center.y < 25)
            pos2.y = -pos2.y;

        if(balloon3.center.y > 420 || balloon3.center.y < 25)
            pos3.y = -pos3.y;


        if(balloon4.center.y > 320 || balloon4.center.y < 25)
            pos4.y = -pos4.y;


        if(balloon5.center.y > 320 || balloon5.center.y < 25)
            pos5.y = -pos5.y;

    }




   - (void)willAnimateSecondHalfOfRotationFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation duration:(NSTimeInterval)duration {
UIInterfaceOrientation toorientation = self.interfaceOrientation;
    if ((toorientation == UIInterfaceOrientationPortrait) || (toorientation == UIInterfaceOrientationPortraitUpsideDown) )  {
    timer  = [NSTimer scheduledTimerWithTimeInterval:0.05 target:self selector:@selector(onTimer) userInfo:nil repeats:YES];
else{
timer  = [NSTimer scheduledTimerWithTimeInterval:0.05 target:self selector:@selector(onTimer1) userInfo:nil repeats:YES];
}
}

但它不能工作，可能是因为我们不能在subviewcontroller类中处理它，如果是我如何在超类中处理它。

如果我的猜测是错的，有没有人能建议一下错在哪里？

提前谢谢你。

Answer 1

你实现shouldAutorotateToInterfaceOrientation了吗？

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return YES;
}

顺便说一下，您可以将代码简化为一个使用self.view.bounds.size.height或类似方法的"onTimer“方法，而不是硬编码值420和320。