UITableViewController reloadData cellForRowAtIndexPath not being called

Question

called loadData method from other viewcontoller like:

TestTVC *testTVC = [[TestTVC alloc] init];
[testTVC loadData];

I put NSLog(@"testTVC Array section:%lu has %lu rows ") in numberOfRowsInSection, it return result.

However in the cellForRowAtIndexPath section, the NSLog(@"cellForRowAtIndexPath") never printed for somehow.

I was sure that my delegate and data source were set properly. Because it works when [self loadData]

I also try run it in the main thread, it does't work.

Does anyone knows? Thanks.

updated: i used [self.tableView reloadRowsAtIndexPaths:[self.tableView indexPathsForVisibleRows] withRowAnimation:UITableViewRowAnimationNone]; instead of [self.tableView reloaddata] , it works but it didn't reload the UIImages in table cell.

NSLog(@"change cell image to testTVCImg1");
[testTVCCell.selectImgView setImage:[UIImage imageNamed:@"testTVCImg1"]];

the NSLog debug message printed, but the image didn't changed.

Answer 1

cellForRowAtIndexPath is called when a cell become visible.

When you do

TestTVC *testTVC = [[TestTVC alloc] init];
[testTVC loadData];

testTVC is not in the view hierarchy and its tableview neither. So cellForRowAtIndexPath won't be call.