Question

在我的表格视图中设置单元格时，我遇到了这个问题：

日志：

*由于未捕获的异常终止应用＆＃39; NSRangeException＆＃39;，原因：＆＃39; * - [__ NSArrayM objectAtIndex：]：超出边界的索引5 [0 .. 4] ＆＃39; ***第一次抛出调用堆栈：（0x18696afd8 0x1853cc538 0x1868491f0 0x100918a30 0x10091960c 0x18cddf114 0x18cddf32c 0x18cdcca30 0x18cde431c 0x18cb7c92c 0x18ca97158 0x189c87274 0x189c7bde8 0x189c7bca8 0x189bf7360 0x189c1e3c0 0x189c1ee8c 0x1869189a0 0x186916628 0x186846db4 0x1882b0074 0x18caff130 0x1006920bc 0x18585559c） libc ++ abi.dylib：以NSException类型的未捕获异常终止

internal func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    if (tableView == tableview) {
        let cell = tableView.dequeueReusableCell(withIdentifier: "table", for: indexPath as IndexPath) as! homeTableViewCell

        if (titlearray.count != 0) {
            let tit: NSString = self.titlearray[indexPath.row] as! NSString

            print("titlearraytitlearray\(titlearray)")

            appDelegate.trendseetitarray = titlearray

            print("appDelegatetrendseearray\(appDelegate.trendseetitarray)")

            cell.treadingtitle.text! = tit as String
        }

        if (pricearray.count != 0) {
            let tit: NSString = self.pricearray[indexPath.row] as! NSString

            appDelegate.trendseepricearray = pricearray

            cell.trendingprice.text! = tit as String
        }

        if (addressarraylist.count != 0) {
            let tit: NSString = self.addressarraylist[indexPath.row] as! NSString

            appDelegate.addressarraylist = addressarraylist
        }

        if (imagearray.count != 0 && imagearray.count != nil ) {
            print(imagearray)

            let roomurl=URL(string: "\(imagearray[indexPath.row])")
            //  print("Room URL:\(roomurl!)")
            appDelegate.trendseeimagearray = imagearray

            cell.Trendingimg.sd_setImage(
                with: roomurl,
                placeholderImage: UIImage(named:"no_image.png"),
                options: SDWebImageOptions.refreshCached,
                completed: { (image1: UIImage?, error1: Error?, cacheType1: SDImageCacheType, imageURL1: URL?) -> Void in
                }
            )

            cell.Trendingimg.clipsToBounds = true;
            cell.Trendingimg.sd_setImage(with: roomurl, completed: self.block1)
        }

        return cell
    }

    return UITableViewCell()
}

错误：

if (addressarraylist.count != 0) {
    let tit: NSString = self.addressarraylist[indexPath.row] as! NSString

    appDelegate.addressarraylist = addressarraylist
}

问题图片：

Click here

Answer 1

为什么要检查Array的大小是否为非零而不是测试计数是否至少与indexPath.row一样大？试试这个：

// array index must be less than the count since the index is zero-based
if indexPath.row < addressarraylist.count {
  let tit: NSString = addressarraylist[indexPath.row] as! NSString
  appDelegate.addressarraylist = addressarraylist
}

在解开它们之前，您还应测试Optional值。强制解包可能导致运行时崩溃。像这样测试它们：

if let tit: NSString = addressarraylist[indexPath.row] as? NSString { ... }

Answer 2

你可以试试这个： -

if self.addressarraylist.count > indexPath.row {
    let tit: NSString = self.addressarraylist[indexPath.row] as! NSString
    appDelegate.addressarraylist = addressarraylist
 }

在我的表视图中设置单元格时索引超出范围

2 个答案: