Hi I have an array of strings separated with a delimeter ":". I tried separating strings using componentsSeparatedByString method and then save the result into an array and later use that array to produce the desired output, but it didn't worked.
For example
Now my UITableView displays cells as:
Case 1:
How:Many
Too:Many
Apple:Milk
iPhone:Simulator
I want the cells to be displayed on UITableView as:
Case 2:
Many How
Many Too
Milk Apple
Simulator iPhone
This is my cellForRowAtIndexPath method:
- (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] autorelease];
}
NSString *entry=[entryKeys objectAtIndex:[indexPath section]];
NSArray *entrySection=[entries objectForKey:entry];
cell.textLabel.text=[entrySection objectAtIndex:[indexPath row]]
}
return cell;
}
The output of the above method is case 1 but I want the output to be case 2
entryKeys has keys from A-Z and entry section has values sorted and listed for respective keys i.e. entries starting with A grouped under key A so on...
It may sound silly but I am still learning..please help me
There are numerous ways to do this. Here's one;
// get your raw text in the form of "AAA:BBB"
NSString *rawText = [entrySection objectAtIndex:[indexPath row]];
// split the text by the : to get an array containing { "AAA", "BBB" }
NSArray *splitText = [rawText componentsSeparatedByString:#":"];
// form a new string of the form "BBB AAA" by using the individual entries in the array
NSString *cellText = [NSString stringWithFormat:#"%# %#", [splitText objectAtIndex:1], [splitText objectAtIndex:0]];
Hope that helps.
Wouldn't stringByReplacingOccurrencesOfString:withString: be easier?
Related
I'm working on information retrieval where in the latest information in on top of UITableView. The code goes like this.
-(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
LoanModel* loan = _feed.products[indexPath.row];
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"Cell" ];
if (cell == nil) {
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleValue2 reuseIdentifier:#"Cell"];
}
NSString *myString = [NSString stringWithFormat:#"%#",[loan name]];
NSArray *myWords = [myString componentsSeparatedByString:#","];
NSMutableArray *reversed = [NSMutableArray arrayWithCapacity:[myWords count]];
NSEnumerator *enumerator = [myWords reverseObjectEnumerator];
for (id element in enumerator) {
[reversed addObject:element];
}
NSMutableString *reverseString = [reversed componentsJoinedByString:#","];
cell.textLabel.text = reverseString;
return cell;
}
I'm getting the JSON object which contain two fields cid and name respectively. I'm showing only the name is tableview. But I want to show it in reverse i,e last update should show at first. But above code showing the content in reverse. IF "hello" is the content, then it shows "olleh". Please suggest me how to get the UITableView in reverse list. I'm a newbie to iOS.
If you want to have the reversed order of cells / objects they represent, you have to change
LoanModel* loan = _feed.products[indexPath.row];
to
LoanModel* loan = _feed.products[_feed.products.count - 1 - indexPath.row];
assuming that _feed.products is an NSArray.
The array you are using to display the the data in tableView, you'll need to reverse that and then display the data in tableView
NSArray* reversed = [[myArray reverseObjectEnumerator] allObjects];
you can use this to make your array objects order in reverse.
Try This:
NSArray* reversedArray = [[myWords reverseObjectEnumerator] allObjects];
Hey guys I have a problem, I have a NSDictionary of NSArrays and im trying to set up alphabetical sections so AAAAA, BBBB, CCCC.... etc however when I pass my values over its printing out all of the A values right into one uitableviewcell then the B's in the next... which is not right what Im after. Im hoping to have alphabetical sections with one NSArray/Dictionary value per UItableviewcell..
this is how Im currently setting it up, I think maybe I might be missing an If statment however Im just not exactly sure how to do this so would like some help if possible.. thanks in advance.
- (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] autorelease];
}
cell.accessoryType = UITableViewCellAccessoryNone; //make sure their are no tickes in the tableview
cell.selectionStyle = UITableViewCellSelectionStyleNone; // no blue selection
// Configure the cell...
if(indexPath.row < [self.arraysByLetter count]){
NSArray *keys = [self.arraysByLetter objectForKey:[self.sectionLetters objectAtIndex:indexPath.row]];
NSString *key = [keys description];
NSLog(#"thingy %#", key);
cell.textLabel.text = key;
}
return cell;
}
This is what it looks like on the emulator
UPdate I made chages to my code as suggested below and now this is what happens...
when emulator first loads
I then scroll to the bottom of the list and back to the top and it looks like this.
NSString *key = [keys description];
Here you're setting the text to be the string representation of ALL the keys. :)
I think you want this (and I hope I've interpreted your code properly)
NSArray *keys = [self.arraysByLetter objectForKey:[self.sectionLetters objectAtIndex:indexPath.section]];
NSString *key = [keys objectAtIndex:indexPath.row];
NSLog(#"thingy %#", key);
So, get the KeysArray using the IndexPath section,
then get the value of the cell using the IndexPath row.
I am doing parsing on xml file and fetched data from xml file and store that in array and further to rows of UITableView. I want to remove the extra word at 5th index '\U2019' and want to merge word 'i' and 'm all alone' to one row f UITableView.
"WHERE DOES LOVE LIVE",
"TRANSFORMATION OF THE SELF",
"EMPATHY STRUCTURES",
"MORE QUESTIONS THAN ANSWERS",
I,
"\U2019",
"M ALL ALONE",
"THE WILL TO LIVE",
"THE GUILT OF SELF DENIAL",
HOPELESSNESS,
"SOCIAL WANNABIES",
"THE POWER OF HOPE"
bunch of code:
- (UITableViewCell *)tableView:(UITableView *)tableViewcellForRowAtIndexPath:
(NSIndexPath *)indexPath
{ static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithFrame:CGRectZero];
}
if(indexPath.row > 0)
{ cell.textLabel.text = [blogtitle objectAtIndex: indexPath.row];
}}`
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSMutableString *)string
{
NSString *newString = [string stringByTrimmingCharactersInSet:
[NSCharacterSet whitespaceAndNewlineCharacterSet]];
// save the characters for the current item...
if ( [currentElement isEqualToString:#"title"])
{
if ([newString length] > 0)
{
// NSMutableString *base64String = [newString base64EncodedString];
[blogtitle addObject:newString];
}
NSLog(#"blogtiltlearray...%#",blogtitle);
}}`
It's easy to remove an object at a specific index. Try:
[blogtitle removeObjectAtIndex:index];
EDIT: You can call [tableView reloadData]; in order to remove the row, assuming you've already loaded the tableView BEFORE you manipulated the array.
You can merge 2 strings together via:
NSString * mergedString = [NSString stringWithFormat:#"%#%#", string1, string2];
and you can replace one object in an array with another via:
[blogtitle replaceObjectAtIndex:index withObject:mergedString];
Hope that helps!
You can use NSMutable array and the method of it named removeObjectAtIndex:
I am developing a application in that I want to print the array value in the cell contain label place. I got the vlaues for array like names=[results valueForKey:#"name"].
I write the code for print that value in a lable in cellForRowAtIndexPath like
-(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] autorelease];
}
NSInteger row=indexPath.row;
cell = [self getCellContentView:CellIdentifier];
UILabel *lblTemp1 = (UILabel *)[cell viewWithTag:1];
lblTemp1.text = [names objectAtIndex:row];
//lblTemp2.text = [names objectAtIndex:row];
return cell;
}
but ,when the application got the error at lblTemp1.text = [names objectAtIndex:row] like Program received signal: “EXC_BAD_ACCESS”.So please tell me how to solve this problem.
It seems you've missed to retain the array names. Try,
names = [[results valueForKey:#"name"] retain];
You could consider using declared properties to overcome the overhead of retaining and releasing the objects.
seems to be new bee. please check out for step by step tutorial
http://adeem.me/blog/2009/05/19/iphone-programming-tutorial-part-1-uitableview-using-nsarray/
All,
When my table view loads, it accesses several delegate methods. When I configure the cell, I have it calling this method (where "linkedList" is an array of dictionarys):
- (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];
}
// Configure the cell...
VUWIManager *vuwiManager = [VUWIManager sharedVuwiManager];
NSLog(#"%#", [[vuwiManager linkedList]objectAtIndex:indexPath.row]);
NSLog(#"TESTZOMGOFDSOJFDSJFPODJSAPFDS");
cell.textLabel.text = [[vuwiManager linkedList]objectAtIndex:indexPath.row];
return cell;
}
It crashes at the line cell.textLabel.text = [[vuwiManager linkedList]objectAtIndex:indexPath.row]; - I know I'm doing something wrong here but I'm not sure what it is. Again, linkedList is a NSMutableArray of NSDictionarys.
Edit: if I call cell.textLabel.text = [[vuwiManager linkedList]objectAtIndex:indexPath.row]; it returns:
{
IP = "192.168.17.1";
desc = "description";
}
in the debugger. Just thought I'd give a little bit of formatting details.
Thanks
You are trying to assign an object NSDictionary to cell.textLabel.text, which must be passed a NSString.
Did you want :
NSString *s = [NSString stringWithFormat:#"%#",
[[vuwiManager linkedList]objectAtIndex:indexPath.row]];
cell.textLabel.text = s;
?
Setting an NSString * to an NSDictionary * will likely result in a crash when it tries to access any string methods that are not implemented in the dictionary. If you want that string you are logging add a call to description.
cell.textLabel.text = [[[vuwiManager linkedList]objectAtIndex:indexPath.row] description];
It looks like you are setting cell.textLabel.text to a NSDictionary instead of an NSString. If linkedList is an NSMutableArray of NSDictionaries, then you need to add on objectForKey:#"String key" to access the string
cell.textLabel.text = [[[vuwiManager linkedList]objectAtIndex:indexPath.row] objectForKey:#"STRING_KEY_HERE"];