This is a code that i got from github and crashes on the lines i commented, i know EXC BAD ACCESS is when you dont retain or release something but i have ARC enabled so i dont know what to do.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *cellIdentifier = #"Cell";
CountryCell *cell = (CountryCell *)[tableView dequeueReusableCellWithIdentifier:cellIdentifier];
if(cell == nil) {
cell = [[CountryCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:cellIdentifier];
}
cell.textLabel.text = [[_dataRows objectAtIndex:indexPath.row] valueForKey:kCountryName]; //here crashes
cell.detailTextLabel.text = [[_dataRows objectAtIndex:indexPath.row] valueForKey:kCountryCallingCode]; //here crashes
return cell;
}
I Think one of the best way to set text property in label
cell.textLabel.text = [NSString stringWithFormat:#"%#",[[_dataRows objectAtIndex:indexPath.row] valueForKey:kCountryName]];
cell.detailTextLabel.text = [NSString stringWithFormat:#"%#",[[_dataRows objectAtIndex:indexPath.row] valueForKey:kCountryCallingCode]];
its may be useful ..
Related
i here attached a snapshot of my sample output.now it has two cells that is according to arraycount which i used at number of rows in section method.i have calutalted the break time ,now i want to insert one more cells in between that two cells to dispay the break time . here is my code whic i did ....please help me to do this .thanks in advance
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *simpleTableIdentifier = #"TableViewCell";
TableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil) {
cell = [[TableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
}
NSLog(#"%#",self.arrData1);
NSDictionary *tempDictionary= [self.arrData1 objectAtIndex:indexPath.row];
//NSLog(#"%#",tempDictionary);
NSString *strFunctionCodeValue =[tempDictionary objectForKey:#"function_code"];
NSString *strStartTimeValue = [tempDictionary objectForKey:#"start_time"];
NSString *strEndTimeValue = [tempDictionary objectForKey:#"end_time"];
NSString *strTotalUnitsValue =[tempDictionary objectForKey:#"total_units"];
NSString *strTotalTimeValue = [tempDictionary objectForKey:#"total_time"];
//NSString *strBreakTimeValue = [tempDictionary objectForKey:#"break_time"];
cell.lblFunctionCodeValue.text = strFunctionCodeValue;
cell.lblStartTimeValue.text = strStartTimeValue;
cell.lblEndTimeValue.text = strEndTimeValue;
cell.lblTotalUnitsValue.text =strTotalUnitsValue;
cell.lblTotalTimeValue.text = strTotalTimeValue;
//cell.lblBreakTimeValue.text = strBreakTimeValue;
return cell;
}
I am new to swift.
How can I set IndentationLevel in UITableViewCell?
I have already achieved through Objective C, but I am not able to achieve through Swift.
EDIT:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] ;
}
cell.textLabel.text=[[self.menuTableAr objectAtIndex:indexPath.row] valueForKey:#"name"];
[cell setIndentationLevel:[[[self.menuTableAr objectAtIndex:indexPath.row] valueForKey:#"level"] intValue]];
return cell;
}
Thanks
Assume that valueForKey will return a NSNumber Object
Try
let level = self.menuTableAr.objectAtIndex(indexPath.row).valueForKey("level") as! NSNumber
cell.indentationLevel = Int(level.intValue)
I assign some custom view to UITableViewCell.accessoryView， but if I scroll the tableView crazy, some accessoryView will disappear in iOS 7, and if I touch the cell, it's accessoryView can appear, I don't know why, because it's correct in iOS 6. This is my code, someone can help me?
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (!cell)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cell.textLabel.text = [NSString stringWithFormat:#"CELL %d", (int)indexPath.row+1];
NSDictionary * dict = [_dataSource objectAtIndex:indexPath.row];
if ([dict objectForKey:#"switch"])
{
cell.accessoryView = [dict objectForKey:#"switch"];
}
else
{
cell.accessoryView = nil;
}
return cell;
}
When we use ReusableCellWithIdentifier in table view it reuse cells in table, you set cell.accessoryView = nil; it's remove accessory view for all cells in table view with same CellIdentifier try this code, it's solve your problem :
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
NSDictionary * dict = [_dataSource objectAtIndex:indexPath.row];
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (!cell)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
cell.accessoryView = [dict objectForKey:#"switch"];
}
cell.textLabel.text = [NSString stringWithFormat:#"CELL %d", (int)indexPath.row+1];
if ([dict objectForKey:#"switch"])
{
cell.accessoryView.hidden=NO;
}
else
{
cell.accessoryView.hidden=YES;
}
return cell;
}
Right now I have a tableview, and I can assure you that the delegate method all work. But I am trying to load the tableview from an array. the same array returns actual objects when i log then earlier in the app, but when I try to access the same array in - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
it always returns nil/null.Here is the implementation of - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath:
NSLog(#"cell for row at twitter called");
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
NSDictionary *tweet = [timeLineData objectAtIndex:indexPath.row];
// NSLog(#"Tweet at index %d is %#", [indexPath row], tweet);
//NSLog(#"Tweet: %#", tweet);
cell.textLabel.text = [tweet objectForKey:#"text"];
cell.detailTextLabel.text = [tweet valueForKeyPath:#"user.name"];
return cell;
I am so confused as to why this is, because in all of my other projects the same code works just fine. Any help would be greatly appreciated.
Thanks,
Virindh Borra
Would it help if you access the array using:
[yourArray objectAtIndex:indexpath.row];
So far search on Stack Overflow I havent found a situation that is like mine. Any assistance is greatly appreciated: I keep seeing that if I put a checkmark on Person A, Person H will also have one as well as does a person about 10 away. Basically abut every 10 it repeats a check mark.
Here is my code:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{static NSString *CellIdentifier = #"MyCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
}
cell.textLabel.text =
[NSString stringWithFormat:#"%# %#", [[myArrayOfAddressBooks objectAtIndex:indexPath.row] objectForKey:#"FirstName"],[[myArrayOfAddressBooks objectAtIndex:indexPath.row] objectForKey:#"LastName"]];
cell.detailTextLabel.text =
[NSString stringWithFormat:#"%#", [[myArrayOfAddressBooks objectAtIndex:indexPath.row] objectForKey:#"Address"]];
return cell;
}
In my did select row for index path I have this:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell;
cell = [self.tableView cellForRowAtIndexPath: indexPath];
if ([[myArrayOfAddressBooks objectAtIndex:indexPath.row] objectForKey:#"emailSelected"] != #"YES")
{
cell.accessoryType = UITableViewCellAccessoryCheckmark;
[[myArrayOfAddressBooks objectAtIndex:indexPath.row] setValue:#"YES" forKey:#"emailSelected"];
}
else
{
cell.accessoryType = UITableViewCellAccessoryNone;
[[myArrayOfAddressBooks objectAtIndex:indexPath.row] setValue:#"NO" forKey:#"emailSelected"];
}
This is due to how UITableView "recycles" UITableViewCell for efficiency purposes, and how you are marking your cells when they are selected.
You need to refresh/set the accessoryType value for every cell you process/create within tableView:cellForRowAtIndexPath:. You properly update the state in your myArrayOfAddressBooks data structure, and you just need to use this information in tableView:cellForRowAtIndexPath:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"MyCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
}
NSDictionary *info = [myArrayOfAddressBooks objectAtIndex:indexPath.row];
cell.textLabel.text = [NSString stringWithFormat:#"%# %#", [info objectForKey:#"FirstName"],[info objectForKey:#"LastName"]];
cell.detailTextLabel.text = [NSString stringWithFormat:#"%#", [info objectForKey:#"Address"]];
cell.accessoryType = ([[info objectForKey:#"emailSelected"] isEqualString:#"YES"]) ? UITableViewCellAccessoryCheckmark : UITableViewCellAccessoryNone;
return cell;
}
Also, unless there is a good reason for saving the state as #"Yes" or #"No" strings, why not save them as [NSNumber numberWithBool:YES] or [NSNumber numberWithBool:NO]? This will simplify your logic when you want to do comparisons versus having to use isEqualToString: all the time.
e.g.
cell.accessoryType = ([[info objectForKey:#"emailSelected"] boolValue]) ? UITableViewCellAccessoryCheckmark : UITableViewCellAccessoryNone;