标签:section text ++ uitable ble ati .text UI tab
_dataArr 这里面有20个元素,需求是只要3个
for(int i = 0;i<3;i++){//先拿3个,循环拿取
NSIndexSet *indexset = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange(0,2)];//范围0,1,2个元素
if(_dataArr.count >3){//先判断数组里面的元素是否大于3个,再做截取操作 不然会蹦跶
[_dataArr objectsAtIndexes:indexset];//再将新获取的元素添加至数组
}
}
如果是tabbaleview显示
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return _dataArr.count >3?3:_dataArr.count;//如果self.dataArr.count大于3就显示3个,不足3个就显示数组里面本有的个数,其他不需要改了
}
- (UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
NSDictionary *dic = _dataArr[indexPath.row];//正常显示
cell.carNumLabel.text = dic[@"carCode"];
}
标签:section text ++ uitable ble ati .text UI tab
原文地址:http://www.cnblogs.com/liaolijun/p/7808506.html