IOS 建立NSIndexpath

 

 

 

 

有時候須要根據tag來獲取cell,須要建立NSIndexpath,咱們可能會這麼用:數組

NSIndexPath *indexPath = [[NSIndexPath alloc] initWithIndex:tag];spa

沒有報錯,但很遺憾的是經過這樣的indexPath,你是怎麼都獲取不到cell的!正確的建立方法是:
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:row inSection:section];


code

 

                if ([self.dataArray indexOfObject:model] != NSNotFound) {//數組中某一元素在數組中的位置
                    NSInteger inde =[self.dataArray indexOfObject:model] ;
                    NSLog(@"-2---%ld----",inde);
                    model.status = @"1";
                    [self.dataArray replaceObjectAtIndex:inde withObject:model];//替換數組中某一元素的值
                    NSIndexPath *indexPath = [NSIndexPath indexPathForRow:inde inSection:0];//建立NSIndexpath
                    [self.tableView reloadRowsAtIndexPaths:[NSArray arrayWithObjects:indexPath, nil] withRowAnimation:UITableViewRowAnimationNone];//刷新表格的某一行
                }
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