iphone - 如何在 'for' 循环中添加 subview

Question

我只是想为数组中的每个对象添加一个 UIView，而不是在屏幕上显示超过 3 个，但 View 彼此不相邻。每个 View 之间有很大的差距(一个 View 宽度)。这是我得到的；

int numberOfUsersOnScreen;

if (array.count < 3) {
    numberOfViewsOnScreen = array.count;
}else{
    numberOfUsersOnScreen = 3;
}

double width = (self.scrollView.frame.size.width/numberOfViewsOnScreen);
CGRect r = CGRectMake(0, 0, width, 1200);
[self.usersScrollView setContentSize:CGSizeMake(width*array.count, 0)];

for (int i = 0; i < users.count; i++) {  
       r.origin.x = width * i;
       UIView * view = [[UIView alloc] initFrame:r];
       [self.scrollView addSubview:view];
}    

Answer 1

试试这个:

int xPosition = 0;
for (int i = 0; i < users.count; i++) {  
   UIView * view = [[UIView alloc] initFrame:CGRectMake(xPosition, 0, width, 1200)];
   [self.scrollView addSubview:view];
   xPosition += width;
}