Menu
Skip all this info and skip to the update at the bottom...
I have dealt with unrecognized selectors before, but I cannot figure out what is going on this time. The call stack is opaque and I can't find out where the problem is originating from. I have tried using symbolic and exception breakpoints. This code was working perfectly before..I come back to work on this program some more and am now running into this
[UITableViewSectionElement numberOfSections]: unrecognized selector sent to instance 0xa285d50
I have two UITableViews in this view controller. One of them is hooked up in IB(datasource and delegate). The second one is instantiated in code and its datasource/delegate are also pointing to the view controller. I put a tag of 2 on the second tableview to distinguish them from each other. UITableViewTwo is add to a UIView which is returned as the first tableview's footer if I have valid data to show. Again, this code was working perfectly without any crashes a while back, and I can't seem to figure out why it is crashing now. I am using ARC.
Here is some code:
When I check what the address of the object the selector being sent to is: it is indeed a UITableViewSectionElement. Why the H is this receiving the call numberOfSections? Isn't it supposed to be numberOfSectionsInTableView?
UITableView Delegate/DataSource methods
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
if (tableView.tag == 0) {
if (indexPath.row == 0) {
PCFCustomNumberReviewsCell *cell = [self.tableViewOne dequeueReusableCellWithIdentifier:@"PCFNumberOfRatings"];
[cell.numberOfReviews setText:[NSString stringWithFormat:@"%d", numReviews.integerValue]];
[cell.numberOfReviews setFont:[PCFFontFactory droidSansFontWithSize:17]];
[cell.numberOfReviews setTextColor:[UIColor lightGrayColor]];
UIImageView *imgView = [[UIImageView alloc] initWithFrame:cell.frame];
[imgView setImage:[UIImage imageNamed:@"1slot2.png"]];
[cell setBackgroundView:imgView];
return cell;
}else if(indexPath.row == 1) {
PCFCustomReviewCell *cell = [self.tableViewOne dequeueReusableCellWithIdentifier:@"RateEasiness"];
[cell.stars setBackgroundImage:[self getImageForStars:[NSString stringWithFormat:@"%d", totalEasiness.integerValue]] forState:UIControlStateNormal];
UIImageView *imgView = [[UIImageView alloc] initWithFrame:cell.frame];
[imgView setImage:[UIImage imageNamed:@"1slot2.png"]];
[cell setBackgroundView:imgView];
return cell;
}else if(indexPath.row == 2) {
PCFCustomReviewCell *cell = [self.tableViewOne dequeueReusableCellWithIdentifier:@"RateUsefulness"];
[cell.stars setBackgroundImage:[self getImageForStars:[NSString stringWithFormat:@"%d", totalUsefulness.integerValue]] forState:UIControlStateNormal];
UIImageView *imgView = [[UIImageView alloc] initWithFrame:cell.frame];
[imgView setImage:[UIImage imageNamed:@"1slot2.png"]];
[cell setBackgroundView:imgView];
return cell;
}else if(indexPath.row == 3) {
PCFCustomReviewCell *cell = [self.tableViewOne dequeueReusableCellWithIdentifier:@"RateFunness"];
[cell.stars setBackgroundImage:[self getImageForStars:[NSString stringWithFormat:@"%d", totalFunness.integerValue]] forState:UIControlStateNormal];
UIImageView *imgView = [[UIImageView alloc] initWithFrame:cell.frame];
[imgView setImage:[UIImage imageNamed:@"1slot2.png"]];
[cell setBackgroundView:imgView];
return cell;
}else if(indexPath.row == 4) {
PCFCustomReviewCell *cell = [self.tableViewOne dequeueReusableCellWithIdentifier:@"RateInterestLevel"];
[cell.stars setBackgroundImage:[self getImageForStars:[NSString stringWithFormat:@"%d", totalInterestLevel.integerValue]] forState:UIControlStateNormal];
UIImageView *imgView = [[UIImageView alloc] initWithFrame:cell.frame];
[imgView setImage:[UIImage imageNamed:@"1slot2.png"]];
[cell setBackgroundView:imgView];
return cell;
}else if(indexPath.row == 5) {
PCFCustomReviewCell *cell = [self.tableViewOne dequeueReusableCellWithIdentifier:@"RateTexbookUse"];
[cell.stars setBackgroundImage:[self getImageForStars:[NSString stringWithFormat:@"%d", totalTextbookUse.integerValue]] forState:UIControlStateNormal];
UIImageView *imgView = [[UIImageView alloc] initWithFrame:cell.frame];
[imgView setImage:[UIImage imageNamed:@"1slot2.png"]];
[cell setBackgroundView:imgView];
return cell;
}else if(indexPath.row == 6) {
PCFCustomReviewCell *cell = [self.tableViewOne dequeueReusableCellWithIdentifier:@"RateOverall"];
[cell.stars setBackgroundImage:[self getImageForStars:[NSString stringWithFormat:@"%d", totalOverall.integerValue]] forState:UIControlStateNormal];
UIImageView *imgView = [[UIImageView alloc] initWithFrame:cell.frame];
[imgView setImage:[UIImage imageNamed:@"1slot2.png"]];
[cell setBackgroundView:imgView];
return cell;
}
}else {
PCFCustomCourseCommentCell *cell = (PCFCustomCourseCommentCell *) [self.tableViewTwo dequeueReusableCellWithIdentifier:@"PCFCourseCommentCell"];
if (cell == nil) {
NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:@"PCFCustomCourseReviewCell" owner:self options:nil];
cell = [topLevelObjects objectAtIndex:0];
}
UIImageView *imgView = [[UIImageView alloc] initWithFrame:cell.frame];
[imgView setImage:[UIImage imageNamed:@"1slot2.png"]];
[cell setBackgroundView:imgView];
PCFRateModel *rateObject = [courseReviews objectAtIndex:indexPath.section];
[cell.userName setText:rateObject.username];
[cell.date setText:rateObject.date];
[cell.professor setText:rateObject.course];
[cell.comment setText:rateObject.message];
[cell.term setText:rateObject.term];
for (UIView *view in cell.contentView.subviews) {
if ([view isMemberOfClass:[UILabel class]]) {
UILabel *tempLabel = (UILabel *)view;
if ([tempLabel tag] != 0) {
[tempLabel setFont:[PCFFontFactory droidSansFontWithSize:tempLabel.tag]];
}
}
}
CGSize size = [rateObject.message sizeWithFont:[PCFFontFactory droidSansFontWithSize:11] constrainedToSize:CGSizeMake(290, 100000)];
[cell.comment setFrame:CGRectMake(cell.comment.frame.origin.x, cell.comment.frame.origin.y, size.width, size.height)];
[cell.comment setBaselineAdjustment:UIBaselineAdjustmentAlignBaselines];
[cell.comment setPreferredMaxLayoutWidth:290];
[cell.comment setLineBreakMode:NSLineBreakByWordWrapping];
[cell.starFunness setBackgroundImage:[self getImageForStars:rateObject.totalClarity] forState:UIControlStateNormal];
[cell.starEasiness setBackgroundImage:[self getImageForStars:rateObject.totalEasiness] forState:UIControlStateNormal];
[cell.starUsefulness setBackgroundImage:[self getImageForStars:rateObject.totalHelpfulness] forState:UIControlStateNormal];
[cell.starInterestLevel setBackgroundImage:[self getImageForStars:rateObject.totalInterestLevel] forState:UIControlStateNormal];
[cell.starOverall setBackgroundImage:[self getImageForStars:rateObject.totalOverall] forState:UIControlStateNormal];
[cell.starTextbookUse setBackgroundImage:[self getImageForStars:rateObject.totalTextbookUse] forState:UIControlStateNormal];
return cell;
}
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if (tableView.tag == 0) {
if (isLoading == YES) {
return 0;
}else {
return 7;
}
}else {
if (isLoadingComments == NO && courseReviews) {
return 1;
}else {
return 0;
}
}
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
if (isLoading == YES) return 0;
if (tableView.tag != 0) return courseReviews.count;
return 1;
}
-(UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section
{
if (section == 0 && tableView.tag == 0) {
if (isLoading == YES) {
return activityIndicator;
}else if (isLoading == NO) {
if (isLoadingComments == NO && courseReviews.count > 0) {
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, tableViewTwo.frame.size.height)];
[view addSubview:tableViewTwo];
return view;
}else if (isLoadingComments == YES){
UIView *subView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 50)];
UIActivityIndicatorView *view = [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(145, 10, 36, 36)];
[view setActivityIndicatorViewStyle:UIActivityIndicatorViewStyleWhiteLarge];
[view setColor:[UIColor whiteColor]];
[view startAnimating];
[subView addSubview:view];
return subView;
}else if (!courseReviews) {
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 40)];
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 10, 320, 30)];
[label setTextColor:[UIColor whiteColor]];
[label setTextAlignment:NSTextAlignmentCenter];
[label setFont:[PCFFontFactory droidSansFontWithSize:22]];
[label setText:@"No Reviews"];
[label setBackgroundColor:[UIColor clearColor]];
[view addSubview:label];
return view;
}
}
}
return nil;
}
-(CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section
{
if (tableView.tag == 0) {
if (isLoadingComments == NO && courseReviews.count > 0) return tableViewTwo.frame.size.height + 50;
}
return 5;
}
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
if (tableView.tag == 2) {
PCFRateModel *model = [courseReviews objectAtIndex:indexPath.section];
CGSize size = [model.message sizeWithFont:[PCFFontFactory droidSansFontWithSize:11] constrainedToSize:CGSizeMake(290, 100000)];
return (93 + size.height + 10);
}else {
return tableView.rowHeight;
}
}
-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
if (section == 0 && tableView.tag == 0) {
if ([PCFInAppPurchases boughtRemoveAds] == NO) {
if (adView && adView.hidden == NO) {
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 80)];
CGRect frame = adView.frame;
frame.origin.y = 0;
adView.frame = frame;
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(10, 60, 320, 30)];
[label setNumberOfLines:0];
[label setText:classTitle];
[label setFont:[PCFFontFactory droidSansFontWithSize:14]];
[label setTextColor:[UIColor whiteColor]];
[label setBackgroundColor:[UIColor clearColor]];
[view addSubview:adView];
[view addSubview:label];
return view;
}
}else {
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(10, 0, 320, 30)];
[label setNumberOfLines:0];
[label setText:classTitle];
[label setFont:[PCFFontFactory droidSansFontWithSize:14]];
[label setTextColor:[UIColor whiteColor]];
[label setBackgroundColor:[UIColor clearColor]];
return label;
}
}
return nil;
}
-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
if (section == 0 & tableView.tag == 0) {
if ([PCFInAppPurchases boughtRemoveAds] == NO) {
if (adView && adView.hidden == NO) {
return 90;
}return 10;
}else {
return 30;
}
}
return 5;
}
View Did Load(The relevant information):
tableViewTwo = [[UITableView alloc] initWithFrame:CGRectMake(0, 50, 320, self.view.bounds.size.height) style:UITableViewStyleGrouped];
[tableViewTwo setSectionFooterHeight:0.0f];
[tableViewTwo setDataSource:self];
[tableViewTwo setDelegate:self];
[tableViewTwo setTag:2];
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 10, 320, 30)];
[label setTextColor:[UIColor whiteColor]];
[label setTextAlignment:NSTextAlignmentCenter];
[label setFont:[PCFFontFactory droidSansFontWithSize:22]];
[label setText:@"User Reviews"];
[label setBackgroundColor:[UIColor clearColor]];
[tableViewTwo setTableHeaderView:label];
[tableViewTwo setRowHeight:136];
[tableViewTwo setSectionFooterHeight:.01f];
[tableViewTwo setSectionHeaderHeight:.01f];
I am attaching some screenshots of the app:
Whenever I click on or try to scroll tableviewTwo I get this crash.
Update:
This is what it shows when I scroll the second UITableView(with all exceptions enabled):
I have a build of this working perfectly on my phone(a month ago)..I don't know why I am getting this error now. Could a change if Interface Builder have caused this? I have checked all the outlets and included them. Thanks..
Update:
Oddly enough, when I clone the repo on another laptop it is working without problems. I think somehow the project I was using was corrupted? I will go home and investigate further.
Any ideas as to why this is not crashing on my work laptop(similiar specs) and is crashing on my laptop. I have cloned the git directory in both laptops and I am getting a crash here, but not there. I am running XCode version 4.6.3 on my laptop.
Update 2:
It is no longer working on my work laptop..WTF is going on? Is there a bug in Xcode 4.6.3? Is there anything I can do to troubleshoot this further? Why is numberOfSections being called? I can't find documentation on that online ANYWHERE.
Update 3:
Okay, it turns out that this line of code in the viewForFooterInSection selector is the culprit:
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, tableViewTwo.frame.size.height)];
[view addSubview:tableViewTwo];
return view;
It works fine on the device but crashes on the simulator. When I simply change it to the following..it works.
return tableViewTwo;
Does anyone know why the returning the tableview in a view is giving an error?
318
numberOfSections is a method on UITableView - it's not a delegate method. It looks like the system calls this method internally, and for some reason your table is being released automatically (hence the crash).
I would try the following in your viewForFooterInSection method:
static UIView *view = nil;
if (!view) {
view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, tableViewTwo.frame.size.height)];
[view addSubview:tableViewTwo];
}
return view;
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
