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繼承人： 我在viewDidLoad中編寫了一個UIImageView，並且我希望它可以隨着我的功能buttonPressed **向下移動，而不需要像我那樣創建其他子視圖。如何移動UIImageView？
繼承人的代碼。
- （無效）viewDidLoad中{
[超級viewDidLoad中];
banetteImage = [UIImage imageNamed：@「myBanette.png」];
UIImageView *banetteView = [[UIImageView alloc] initWithImage:banetteImage];
banetteView.frame = CGRectMake(100, -740, 568, 790);
banetteView.opaque = NO;
[的NSTimer scheduledTimerWithTimeInterval：2.5目標：自選擇器：@selector（buttonPressed：）USERINFO：無重複：NO];
[self.view addSubview:banetteView];
}
- （無效）buttonPressed {
double speed = 1/round(random() % 100) + 1.0;
[UIView beginAnimations:nil context:banetteView];
[UIView setAnimationDuration: 2*speed ];
banetteView.frame = CGRectMake(100, -2, 568, 790);
banetteView.opaque = NO;
UIImageView *banetteView = [[UIImageView alloc] initWithImage:banetteImage];
banetteView2.frame = CGRectMake(100, -740, 568, 790);
banetteView.opaque = NO;
banetteView.hidden = YES;
[self.view addSubview:banetteView];
// set a stop callback so we can cleanup the banette when it reaches the
// end of its animation
[UIView setAnimationDidStopSelector:@selector(onAnimationComplete:finished:context:)];
[UIView setAnimationDelegate:self];
[UIView commitAnimations];
}
- （無效）onAnimationComplete：（的NSString *）animationID完成：（的NSNumber *）完成上下文： （void *）上下文{
UIImageView *banetteView = context;
double speed = 1/round(random() % 100) + 1.0;
banetteView.frame = CGRectMake(100, -2, 568, 790);
banetteView2.opaque = NO;
[self.view addSubview:banetteView2];
[UIView beginAnimations:nil context:banetteView];
[UIView setAnimationDuration: 2*speed ];
[banetteView release];
}