I am using following code,in cellForRowAtIndexPath:(NSIndexPath *)indexPath method
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
if(currentRow >=[finalArray count]) return cell;
// Configure the cell.
for(int ii=0;ii<[keys count];ii++){
NSString *no22=[dict objectForKey:[keys objectAtIndex:ii]];
no=[NSString stringWithFormat:#"%# %"[keys objectAtIndex:ii],]
}// end of the for loop
if(searching)
cell.text = [copyListOfItems objectAtIndex:indexPath.row];
else {
cell.text=[finalArray objectAtIndex:currentRow];
currentRow=currentRow+1;
}
return cell;
}
I am getting strange behavior when I scroll the table data is completely mismanaged,please any suggestion.
Is because you are reusing cells. You can reuse more type of cells.
And why you are doing if(currentRow >=[finalArray count]) return cell; this?
Related
I want to populate my UITableView with data from my NSMutableArray but it is getting an exception.
The exception:
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSDictionaryM isEqualToString:]: unrecognized selector sent to instance 0xa2ba880'
My cellForRowAtIndexPath:
- (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.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
}
cell.textLabel.text = [callDetailArray objectAtIndex:indexPath.row];
[cell setAccessoryType: UITableViewCellAccessoryDisclosureIndicator];
return cell;
}
This is the array:
Array: (
{
callId = 3;
callKeyword = CALL100;
callName = "Call to All";
callNumber = 5908;
}
)
What I want to happen is that the cells in my UITaleView will display the data in callId, callKeyword, callName and callNumber.
In you CellDetailArray Data In Dictionary so you can Get Deta From NSMutableArray like Bellow:-
- (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.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
}
NSMutableDictionary *d=(NSMutableDictionary*)[callDetailArray objectAtIndex:indexPath.row];
cell.textLabel.text =[d valueForKey:#"callName"];
[cell setAccessoryType: UITableViewCellAccessoryDisclosureIndicator];
return cell;
}
if you want to show all four value in to your TableCell have to Create customeCell with Four UIlable and Sate Value like:-
YourLable1.text =[d valueForKey:#"callId"];
YourLable2.text =[d valueForKey:#"callKeyword"];
YourLable3.text =[d valueForKey:#"callName"];
YourLable4.text =[d valueForKey:#"callNumber"];
you use below code
cell.textLabel.text = [[callDetailArray objectAtIndex:indexPath.row]objectForKey:#"callName" ];
You are trying access dictionary instead of string. callDetailArray conatins dictionary data. inside the dictionary only strings are available so you must need to access it by using objectForKey
I want to show a picture if each row starts with a certain character, let's say "&" in the below example. The code below seems to only work if the first row doesn't start with '&'. If the first row has '&' all of the rows will have the picture. What's wrong?
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle
reuseIdentifier:CellIdentifier] autorelease];
}
if ([[[array objectAtIndex:(indexPath.row)] substringToIndex:1] isEqualToString:#"&"])
{
cell.textLabel.text = [array objectAtIndex:(indexPath.row)];
cell.detailTextLabel.text = [array objectAtIndex:(indexPath.row)+1];
cell.imageView.image = [UIImage imageNamed:#"picture.png"];
return cell;
}
else
{
cell.textLabel.text = [array objectAtIndex:(indexPath.row)];
cell.detailTextLabel.text = [array objectAtIndex:(indexPath.row)+1];
return cell;
}
}
Since the first cell may be reused later on, you have to "reset" its state on every call of cellForRowAtIndexPath. Try adding cell.imageView.image = nil after cell.detailTextLabel.text in the else block.
I have a table with 50 rows. I want to select particular rows with checkmark accessory but when i select some rows and scroll down the table then i see pre checked rows. I know that table cell are reused but i want to emit this problem what can i do about this?
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
// return [array count];
return 50;
}
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
TableViewCell *cell = (TableViewCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[TableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
cell.textLabel.text=[NSString stringWithFormat:#"%i",[indexPath row]];
return cell;
}
// Override to support row selection in the table view.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
if (cell.accessoryType == UITableViewCellAccessoryNone) {
cell.accessoryType = UITableViewCellAccessoryCheckmark;
} else {
cell.accessoryType = UITableViewCellAccessoryNone;
}
You have to set cell.accessoryType in - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
The fact is that as you have a reuse identifier, when a new cell is requested, a cell with the identifier is copied. As you have set the checkmark in the latest cell, the checkmask is copied.
You have to store the state of each cell (ie in an array) to recreate the cell with the right value.
Something like that:
BOOL values[50]; //Not the best way, but easy for the example...
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
TableViewCell *cell = (TableViewCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[TableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
cell.textLabel.text=[NSString stringWithFormat:#"%i",[indexPath row]];
if (value[indexPath.row]) {
cell.accessoryType = UITableViewCellAccessoryCheckmark;
} else {
cell.accessoryType = UITableViewCellAccessoryNone;
}
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
values[indexPath.row] = !value[indexPath.row];
if (value[indexPath.row]) {
cell.accessoryType = UITableViewCellAccessoryCheckmark;
} else {
cell.accessoryType = UITableViewCellAccessoryNone;
}
}
You can do it with the help of array ,take one array and each array hold a dict do this condition in array
NSMutableArray *arr = [[NSMutableArray alloc]init];
for(int i=1; i<=50;i++)
{
NSmutableDictionary *dict = [[NSMutableDictionary alloc]init];
[dict setobject:[nsstring stringwithformat:#"%d",i] valueForkey:#"ID"];
[arr addobject:dict];
[dict release];
}
now rows is [arr count];
and put this check in cell appearance
NSMutabledict *dict1 = [arr objectatindex:indexpath.row];
if([[dict objectforkey:"Check"]==nil])
{
[dict setobject:[nsstring stringwithformate:#"1"] valueforkey:#"Check"];
}else
{
if([[dict objectforkey:"Check"] isequaltostring:#"1"]
{
cell.accessoryType = UITableViewCellAccessoryNone;
}
else
{
cell.accessoryType = UITableViewCellAccessoryCheckmark;
}
}
now put below code in didselect methood
nsmutabledict *dict1 = [arr objectatindex:indexpath.row];
if([[dict objectforkey:"Check"] isequaltostring:#"1"]
{
[dict setobject:[nsstring stringwithformate:#"2"] valueforkey:#"Check"];
}
else
{
[dict setobject:[nsstring stringwithformate:#"1"] valueforkey:#"Check"];
}
I got Error while using UITableView as 'setText:' is deprecated in line cell.text=cellvalue
Please anyone can how to fix this?
- (UITableViewCell *)tableView:(UITableView *)atable cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [atable dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
}
NSString *cellValue = [listOfItems objectAtIndex:indexPath.row];
cell.text = cellValue; //Error 'setText:' is deprecated
return cell;
}
cell.textLabel.text = #"Value"
Because Apple added the Subtitle style to the table view cells, you need to use:
[cell.textLabel setText:#"String"];
instead.
i want to use the appRecord.myName in the viewDidLoad,
when i put it there it error up that appRecord is undeclared, how to declare it?
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"pilotWay";
static NSString *PlaceholderCellIdentifier = #"PlaceholderCell";
int nodeCount = [self.entries count];
if (nodeCount == 0 && indexPath.row == 0)
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:PlaceholderCellIdentifier];
if (cell == nil)
{
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle
reuseIdentifier:PlaceholderCellIdentifier] autorelease];
cell.detailTextLabel.textAlignment = UITextAlignmentCenter;
cell.selectionStyle = UITableViewCellSelectionStyleNone;
}
cell.detailTextLabel.text = #"load";
return cell;
}
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle
reuseIdentifier:CellIdentifier] autorelease];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
}
if (nodeCount > 0)
{
AppRecord *appRecord = [self.entries objectAtIndex:indexPath.row];
cell.textLabel.text = appRecord.myName;
cell.textLabel.text = appRecord.appName;
}
return cell;
}
Do you have #import "AppRecord.h" at the top of that file?
It appears that appRecord is declared (= does that). Perhaps you need to cast it, though: (AppRecord *)[self.entries objectAtIndex:indexPath.row]. Whatever you do, to check whether appRecord exists, try the following and run:
NSLog(#"appRecord: %#", appRecord);
You should get a description of the object appRecord with a memory address if it exists. Let me know if any of this helps, or if you need further explanation.