很抱歉,如果之前有人询问,但我找不到问题的答案。
我编写了用于刷新的代码,但是如果结果数组计数与indexPath.row
不同,它会崩溃,并且我试图删除我的数组对象但它仍然崩溃。
我的代码适用于此:
-(void)loadMore:(id) sender {
loadFlag = 1;
NSString *employeeID = @"aaa";
days = 3;
int projIDNum = 1234;
int depCode = 1234000001;
int caseNum = 45678;
NSString *result = [client report_search:employeeID case_no:caseNum status:loadFlag
day:days project_id:projIDNum dep_code:depCode count:10];
if ([result isEqualTo:@"[]"]) {
[Utilities callAlert:self title:@"No More Data" body:@"There is no other data contains"];
[refresh endRefreshing];
} else {
NSData *jsonData = [result dataUsingEncoding: NSUTF8StringEncoding];
NSError *error;
[resultArr removeAllObjects];
// resultArr is NSMutableArray and it's the tableview's data source
resultArr = [[NSJSONSerialization JSONObjectWithData:jsonData options: 0
error:&error] mutableCopy];
[refresh endRefreshing];
[_mSearchTableView reloadData];
}
}
如果我得到完整的10个数据结果,程序本身不会崩溃但是当我从Web服务获得少于10个数据时会发生这种情况。我一直得到这个例外,NSRangeException, reason: index 8 beyond bounds [0 .. 4]
但不知道如何处理它。
我的tableview设置:
-(NSInteger) numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
-(NSInteger) table:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [resultArr count];
}
这是我的cellForRowAtIndexPath - Tj3n
-(UITableViewCell) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
NSString *cellIdentifier = @"cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier forIndexPath:indexPath];
// clear cell
for ([UIView *view in [cell.contentView subviews]]) {
if ([view isKindOfClass:[UIView class]]) {
[view removeFromSuperview];
}
}
UILabel *titleLabel = [[UILabel alloc] init];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
} else {
titleLabel = [cell.contentView viewWithTag:100];
}
CGRect location = CGRectMake(20, 20, 71/75, 40/146);
titleLabel = [[UILabel alloc] initWithFrame:location];
titleLabel.textAlignment = NSTextAlignmentNatural;
titleLabel.text = [resultArr valueForKey:@"title"][indexPath.row]; // this is the line always crashed
[cell.contentView addSubview:titleLabel];
return cell;
}
还要更新我的json:
print out result: [
{
Content = "Test\nTest\n";
"Create_Datetime" = "2016-09-12 10:18:25";
"Project_ID" = 2023;
Status = 4;
"CASE_NO" = 17704;
Title = "Table title";
"Update_Datetime" = "2016-09-12 10:19:09";
},
{
Content = "Fhujhfdfhjoookbvv\nGu...";
"Create_Datetime" = "2016-09-12 10:09:28";
"Project_ID" = 2023;
Status = 4;
"CASE_NO" = 17703;
Title = "Table title";
"Update_Datetime" = "2016-09-12 10:12:59";
},
{
Content = dafsdfasfasfas;
"Create_Datetime" = "2016-09-04 01:52:09";
"Project_ID" = 2023;
Status = 5;
"CASE_NO" = 16512;
Title = "Table title";
"Update_Datetime" = "2016-09-14 16:44:46";
},
{
Content = dafsdfa;
"Create_Datetime" = "2016-09-04 01:41:59";
"Project_ID" = 2023;
Status = 4;
"CASE_NO" = 16511;
Title = "Table title";
"Update_Datetime" = "2016-09-04 01:42:23";
},
{
Content = sdfasfasf;
"Create_Datetime" = "2016-09-02 14:14:39";
"Project_ID" = 2023;
Status = 2;
"CASE_NO" = 16502;
Title = "Table title Table subtitle";
"Update_Datetime" = "2016-09-02 15:17:50";
}]
更新 在崩溃之前,我试图在不同的地方打印出日志以获取数组计数。
第一个位置是before table reload
,数组中的对象数是5。
第二名位于cellForRowsAtIndexpath
。我有两个要打印的项目
最后,我打印日志的地方是numberOfRowsInSection
。在应用程序崩溃之前,它不会打印出日志。
答案 0 :(得分:0)
我认为如何获得标题会出现问题,而不是titleLabel.text = [resultArr valueForKey:@"title"][indexPath.row];
,您可以尝试以下方法。如果这不起作用,你能打印出每个值的价值,即'字典的价值是什么?和' title'是
NSDictionary *dictionary = [resultArr objectAtIndex:indexPath.row];
NSString *title = [dictionary objectForKey:@"Title"];
titleLabel.text = title;
答案 1 :(得分:0)
NSRangeException', reason: '*** -[__NSArrayM objectAtIndex:]: index 5 beyond bounds for empty array'
谢谢JingJingTao和Tj3n帮助我。
我终于找到了这个bug的答案,但我仍然无法找出原因和原因。从逻辑上看,它应首先转到numberOfRowsInSection
来设置当前表的行数,但显然它没有。有人可以解释为什么会这样吗?