父视图与子视图

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1，子视图在父视图上显示及响应触摸时间，

1，子视图的frame需与父视图关连
2，在父视图必须声明[self.subView superview];

- (UIImageView *)imageTom
{
    if (_imageTom == nil) {
        UIImageView *imageTom = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];
        _imageTom = imageTom;
        [self.imageTom setImage:[UIImage imageNamed:@"eat_00.jpg"]];
        [self.view addSubview:self.imageTom];
        //一定要实现！！！！！！！！！！
        [self.eatCat superview];
    }
    return _imageTom;
}

- (UIButton *)eatCat
{
    if (_eatCat == nil) {
        UIButton *eatCat = [[UIButton alloc] initWithFrame: CGRectMake(self.imageTom.frame.origin.x+10, 400, 60, 60)];
        _eatCat = eatCat;
        [self.eatCat setImage:[UIImage imageNamed:@"eat"] forState:UIControlStateNormal];
        [self.eatCat setTag:10];
        [self.eatCat addTarget:self action:@selector(click:)
                    forControlEvents:UIControlEventTouchUpInside];
        [self.view addSubview:self.eatCat];
    }
    return _eatCat;
}

父视图与子视图

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原文地址：http://my.oschina.net/u/2346786/blog/474932