IOS 创建NSIndexpath
有时候需要根据tag来获取cell,需要创建NSIndexpath,我们可能会这么用:
NSIndexPath *indexPath = [[NSIndexPath alloc] initWithIndex:tag];
没有报错,但很遗憾的是通过这样的indexPath,你是怎么都获取不到cell的!正确的创建方法是:
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:row inSection:section];
if ([self.dataArray indexOfObject:model] != NSNotFound) {//数组中某一元素在数组中的位置 NSInteger inde =[self.dataArray indexOfObject:model] ; NSLog(@"-2---%ld----",inde); model.status = @"1"; [self.dataArray replaceObjectAtIndex:inde withObject:model];//替换数组中某一元素的值 NSIndexPath *indexPath = [NSIndexPath indexPathForRow:inde inSection:0];//创建NSIndexpath [self.tableView reloadRowsAtIndexPaths:[NSArray arrayWithObjects:indexPath, nil] withRowAnimation:UITableViewRowAnimationNone];//刷新表格的某一行 }