ios 如何知道 UITableView.visibleCells 的索引路径？
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how to know indexpath of UITableView.visibleCells?
提问by user4951
NSArray * arrayOfVisibleTVC=[BNUtilitiesQuick ListController].tableViewA.visibleCells;
NSLog(@"array : %@", arrayOfVisibleTVC);
will display
会显示
"<UITableViewCell: 0x76c22a0; frame = (0 0; 320 75); autoresize = W; layer = <CALayer: 0x76bf770>>",
"<UITableViewCell: 0x76cfec0; frame = (0 75; 320 75); autoresize = W; layer = <CALayer: 0x769d260>>",
"<UITableViewCell: 0xe245f70; frame = (0 150; 320 75); autoresize = W; layer = <CALayer: 0xe245ed0>>",
"<UITableViewCell: 0xe248980; frame = (0 225; 320 75); autoresize = W; layer = <CALayer: 0xe2488c0>>",
"<UITableViewCell: 0xe24afa0; frame = (0 300; 320 75); autoresize = W; layer = <CALayer: 0xe24aee0>>"
and with this
有了这个
UITableViewCell * lastObjectOfArray=arrayOfVisibleTVC.lastObject;
int indexpathLastObject= (lastObjectOfArray.frame.origin.y/new.frame.size.height);
I know the last of arrayOfVisibleTVC.lastObject that I use to get indexpath. but I think there is an another way to get indexpath of TableViewcell that showed.. any one can help me?
我知道用于获取索引路径的最后一个 arrayOfVisibleTVC.lastObject。但我认为还有另一种方法可以获得 TableViewcell 的 indexpath 显示..有人可以帮助我吗？
so I can get indexpath of cell as integer
所以我可以将单元格的索引路径作为整数
回答by Ramis
Here is method in UITableView class:
这是 UITableView 类中的方法：
objective-c
目标-c
- (NSArray *)indexPathsForVisibleRows
Swift
迅速
public var indexPathsForVisibleRows: [NSIndexPath]? { get }
回答by sosborn
UITableView has a method to find the indexPath of a cell:
UITableView 有一个方法来查找单元格的 indexPath：
- (NSIndexPath *)indexPathForCell:(UITableViewCell *)cell
Just iterate over your visible cells array and pass each cell to get the index path.
只需遍历可见单元格数组并传递每个单元格即可获取索引路径。
for (UITableViewCell *cell in arrayOfVisibleTVC) {
NSIndexPath *path = [[BNUtilitiesQuick ListController].tableViewA indexPathForCell:cell];
NSLog(@"%@", path);
}
