iOS随笔小记--tableview

1>在tableview代理方法以外获取点击的cell

NSIndexPath *indexPath=[goodsDetailsTableView indexPathForSelectedRow];

GoodsDetailsTableViewCell *cell=[goodsDetailsTableView cellForRowAtIndexPath:indexPath];

2>在tableview代理方法以外获取点击的index

UITableViewCell *cell=(UserEvaluationTableViewCell *)btn.superview.superview;

NSIndexPath *indexPath=[userTableView indexPathForCell:cell];

这样可以取到。。。

3>分割线

分割线顶头显示

-(void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath{

//Remove seperator inset

if ([cell respondsToSelector:@selector(setSeparatorInset:)]){

[cell setSeparatorInset:UIEdgeInsetsZero];

}

//Prevent the cell from inheriting the Table View's margin settings（防止单元格继承表视图的边缘设置）

if ([cell respondsToSelector:@selector(setPreservesSuperviewLayoutMargins:)]){

[cell setPreservesSuperviewLayoutMargins:NO];

}

//Explictly set your cell's layout margins（设置你的cell的布局空间）

if ([cell respondsToSelector:@selector(setLayoutMargins:)]){

[cell setLayoutMargins:UIEdgeInsetsZero];

}

//去掉某个分割线

if(tableView==_historyWordTableView){

if((_historyWordDataArray.count > 1)&&(indexPath.row  == _historyWordDataArray.count-1)){

cell.separatorInset = UIEdgeInsetsMake(0, 0, 0, WIDHT);

}

}

4、实现单选

定义一个 NSIndexPath          * lastPath;

在cellForRowAtIndexPath方法里面，设置lastPath = indexPath;

在didSelectRowAtIndexPath选中某个cell的方法里面

if (lastPath == indexPath) {

       return;

}

UITableViewCell * lastCell = [self.homeTableView cellForRowAtIndexPath:lastPath];

lastCell.accessoryType = UITableViewCellAccessoryNone;

NSIndexPath *indexPath=[self.homeTableView indexPathForSelectedRow];

UITableViewCell *homecell=[self.homeTableView cellForRowAtIndexPath:indexPath];

homecell.accessoryType = UITableViewCellAccessoryCheckmark;

lastPath = indexPath;