如何将对象移动到安排位置? [英] How to move object to arrangement?

问题描述

所有人

我有一个问题，我想实现一个UI，就像iOS桌面一样，到目前为止我可以安排

I got a question , I want to implement a UI , Like iOS desktop , so far I can arrangement

对象:

int k=0;
    int j;
    for (int i=0; i<[items count]; i++) {
       //k is row     
        j=i%3;
        if (j==0) {
            k++;
            if (k%3 == 1) {
                k = 1;
            }
        }
 [button setFrame:CGRectMake(25+(i%3*95), 35+((k-1)*140), 100, 100)]; 

因此，视图将如下所示

A B C
D E F
G H I

现在，使其进入编辑模式，在E和F之间拖动A

Now , let it into edit mode , drag A drop between E and F

所以有很多事情要做

B和C将向左移动，D将在B C之后上升

B and C will shift to left , D will go up after B C

E左移.(如何实现这些动画?)

E shift left .(how to implement these animations ???)

B C D
E A F
G H I

我搜索了Apple示例，只找到了Moveme这个示例，但它只有一个对象

I search the Apple sample , I only find Moveme this sample , but it only one object

任何建议或示例代码都会有很大帮助:)

Any advise or sample code will be great help : )

谢谢

Webber

推荐答案

用户移动按钮时，必须首先找到它的新索引.

When the user moves a button, you have to find it's new index first.

int j = (button.frame.origin.x - 25) / 95;
int k = (button.frame.origin.x - 35) / 140;
int newIndex = 3 * k + j;

然后，您必须将其放置在items数组中的该索引处.

Then you have to place it at that index in the items array.

[items insertObject:button atIndex:newIndex];

然后，您应该调用提供的代码来重新定位按钮.

Then you should call the code you provided to reposition the buttons.

for (int i = 0; i < items.count; i++) {
    UIButton *button = (UIButton *)[items objectAtIndex:i];
    [UIView animateWithDuration:0.5 animations:^{
       button.frame = CGRectMake(25+(i%3)*95, 35+(i/3)*140, 100, 100); 
    }];
}

这篇关于如何将对象移动到安排位置?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！