如何在popover中显示一个动作表？

Question

我有一个拆分视图控制器，左侧有一个表视图控制器。当我单击表格单元格的详细信息披露按钮时，如何在弹出窗口中显示操作表？

Answer 1

试试这个：

UIActionSheet *popupSheet = [[UIActionSheet alloc] initWithTitle:@"Title" 
                                                        delegate:self 
                                               cancelButtonTitle:@"Cancel" 
                                          destructiveButtonTitle:@"No Way !" 
                                               otherButtonTitles:nil];

popupSheet.actionSheetStyle = UIActionSheetStyleBlackOpaque;
UIButton * disclosureButton = (UIButton *)cell.accessoryView;

[popupSheet showFromRect:disclosureButton.bounds inView:cell.accessoryView animated:YES];
[popupSheet release];

UIActionSheet docs表示showFromRect:inView:animated:方法：

  

在弹出框中显示操作表，其箭头指向视图的指定矩形（在我们的示例中为详细信息公开按钮）。弹出窗口不与指定的矩形重叠。

Answer 2

我将此用于更多高级用途：

1. 找到自定义accesoryView（cell.accesoryView）
2. 如果为空，如果单元格
，则找到生成的accesoryView（UIButton）
3. 如果UIButton不存在，找到单元格上下文视图（UITableViewCellContentView）
4. 如果单元格竞争视图不存在，请使用单元格视图

可用于 UIActionSheet 或 UIPopoverController 。

这是我的代码：

UIView *accessoryView       = cell.accessoryView; // finds custom accesoryView (cell.accesoryView)
if (accessoryView == nil) {
    UIView *cellContentView = nil;

    for (UIView *accView in [cell subviews]) {
        if ([accView isKindOfClass:[UIButton class]]) {
            accessoryView   = accView; // find generated accesoryView (UIButton) 
            break;
        } else if ([accView isKindOfClass:NSClassFromString(@"UITableViewCellContentView")]) {
            // find generated UITableViewCellContentView                
            cellContentView = accView; 
        }
    }
    // if the UIButton doesn't exists, find cell contet view (UITableViewCellContentView)           
    if (accessoryView == nil) { 
        accessoryView   = cellContentView; 
    }
    // if the cell contet view doesn't exists, use cell view
    if (accessoryView == nil) {
        accessoryView   = cell; 
    }
}

[actionSheet showFromRect:**accessoryView.bounds** inView:**accessoryView** animated:YES];

在iOS 4.3到5.1中测试

最好用作自定义方法：

-(UIView*)getViewForSheetAndPopUp:(UITableViewCell*)cell;

方法代码：

-(UIView*)getViewForSheetAndPopUp:(UITableViewCell*)cell {
UIView *accessoryView = cell.accessoryView;

if (accessoryView == nil) {
    UIView *cellContentView = nil;

    for (UIView *accView in [cell subviews]) {
        if ([accView isKindOfClass:[UIButton class]]) {
            accessoryView = accView;
            break;
        } else if ([accView isKindOfClass:NSClassFromString(@"UITableViewCellContentView")]) {              
            cellContentView = accView;
        }
    }       

    if (accessoryView == nil) {
        accessoryView   = cellContentView;
    }
    if (accessoryView == nil) {
        accessoryView   = cell;
    }
}

return accessoryView;
}