I want to display the values of a NSMutableArray in a UITableView. In the NSMutableArray are values of objects. But the UITableView doesn't display anything. If I use a normal NSArray with static values it works well.
So this is my code:
This is my object
#interface Getraenke_Object : NSObject {
NSString *name;
}
my NSMutableArray
NSMutableArray *getraenkeArray;
here is where I get the values into the array:
for(int i = 0; i < [getraenkeArray count]; i++)
{
[_produktName addObject:[[getraenkeArray objectAtIndex:i]getName]];
NSLog(#"test: %#",_produktName);
}
and that is how I try to display it in the UITableView
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"ProduktCell";
ProduktTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[ProduktTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
int row = [indexPath row];
cell.produktName.text = _produktName [row];
return cell;
}
Just make your getraenkeArray as member and:
cell.produktName.text = [[getraenkeArray objectAtIndex:indexPath.row] getName];
it seems like you never allocated the NSMutableArray. you are missing:
_produktName = [NSMutableArray array];
and that's why the addObject is being sent to nil..
Related
Have next Table View:
image capture screen
this its make with two NSMutableArrays from Sqlite Database, sublista and subdetail, in example element 0 of sublista contain "A Barda" and element 0 of subdetail contain "Ponteceso".
This code generate this:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"subCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell==nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:CellIdentifier];
cell.accessoryType =UITableViewCellAccessoryDetailButton;
}
NSString *title;
cell.textLabel.text=[sublista objectAtIndex:indexPath.row];
cell.detailTextLabel.text=[subdetail objectAtIndex:indexPath.row];
return cell;
}
Need Add A UIsearch bar and create NSDictionary:
NSMutableDictionary *playas = [NSMutableDictionary dictionaryWithObjectsAndKeys:sublista, #"nombreplaya", subdetail, #"localidadplaya", nil];
But How implement Search or filter Here?
BEST REGARDS
A lot of the methods have deprecated in iOS 7 in order to set font, textLabel, and color for UITableView cells. I'm also just having a difficult time populating the view with these values. Here's a snippet of my code:
- (void)fetchedData:(NSData *)responseData {
//parse out the json data
NSError* error;
NSDictionary* json = [NSJSONSerialization
JSONObjectWithData:responseData
options:kNilOptions
error:&error];
NSArray* jobs = [json objectForKey:#"results"];
for(NSDictionary *jobsInfo in jobs) {
JobInfo *jobby = [[JobInfo alloc] init];
jobby.city = jobsInfo[#"city"];
jobby.company = jobsInfo[#"company"];
jobby.url = jobsInfo[#"url"];
jobby.title = jobsInfo[#"jobtitle"];
jobby.snippet = jobsInfo[#"snippet"];
jobby.state = jobsInfo[#"state"];
jobby.time = jobsInfo[#"date"];
jobsArray = [jobsInfo objectForKey:#"results"];
}
}
I am looping through an array of dictionaries from a GET request and parsed. I am now attempting to fill my UITableView with the following code:
-
(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
return [jobsArray count];
}
- (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];
}
NSDictionary *jobsDic = [jobsArray objectAtIndex:indexPath.row];
[cell.textLabel setText:[jobsDic objectForKey:#"jobtitle"]];
return cell;
}
Also, I have declared this is in my .h file:
NSArray *jobsDic;
Any ideas on what I'm doing wrong? Is this an iOS 7 problem?
It seems that you reinitialize jobsarray at the end of the forin loop.
You didn't mean ?
NSArray* jobs = [json objectForKey:#"results"];
NSMutableArray *jobsTemp = [[NSMutableArray alloc] initWithCapacity:jobs.count];
for(NSDictionary *jobsInfo in jobs) {
JobInfo *jobby = [[JobInfo alloc] init];
jobby.city = jobsInfo[#"city"];
jobby.company = jobsInfo[#"company"];
jobby.url = jobsInfo[#"url"];
jobby.title = jobsInfo[#"jobtitle"];
jobby.snippet = jobsInfo[#"snippet"];
jobby.state = jobsInfo[#"state"];
jobby.time = jobsInfo[#"date"];
[jobsTemp addObject:jobby];
}
self.jobsArray = jobsTemp; //set #property (nonatomic, copy) NSArray *jobsArray; in the .h
[self.tableView reloadData]; //optional only if the data is loaded after the view
In the cell for row 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];
}
JobInfo *job = self.jobsArray[indexPath.row];
cell.textLabel.text = job.title;
return cell;
}
And don't forget :
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return self.jobsArray.count;
}
Update - an user suggested an edit :
It's true that count isn't a NSArray property. But as Objective-C lets us use a shortcut notation for calling method with a dot, this code works. You have to know limitation of this : if you use a NSArray subclass with a count property with a custom getter this could have side effects #property (nonatomic, strong, getter=myCustomCount) NSUInteger count. As I think code readability is to me one of most important things I prefer to use dot notation. I think Apple SHOULD implement count as readonly property so I use it this way (but it's my point of view). So for those which don't agree with me just read return [self.jobsArray count]; in the tableView:numberOfRowsInSection: method.
Change the declaration of jobsArray from NSArray to NSMutableArray.
Add an initialization at the beginning point of fetchedData method like follows.
if(!jobsArray) {
jobsArray = [NSMutableArray array];
}
else {
[jobsArray removeAllObjects];
}
Remove the following line.
jobsArray = [jobsInfo objectForKey:#"results"];
Instead of that, add the initialized object to the array at the end of for loop.
[jobsArray addObject:jobby];
Add a [tableView reloadData]; at the end of your *-(void)fetchedData:(NSData )responseData; method implementation.
Initially when you are loading the view, tableView will get populated. After you received the data, tableView will not be known that it is received.
Everything else seems good. Hope rest will work fine.
I have just implementet a bookmark/favorites function in my app, favorites from a tableview, with the following code, using NSUserDefaults. The cell has 2 labels, the name of the item and a price - stored in the Arrays - theArray and thePriceArray -> like this:
NSIndexPath *indexPath = [_ListTableView indexPathForCell:(UITableViewCell *) [[sender superview] superview]];
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
NSMutableArray *OrderList = [[defaults objectForKey:ORDER_KEY] mutableCopy];
if (!OrderList) OrderList = [NSMutableArray array];
[OrderList addObject:[theArray objectAtIndex:indexPath.row]];
[OrderList addObject:[thePriceArray objectAtIndex:indexPath.row]];
[defaults setObject:OrderList forKey:ORDER_KEY];
[defaults synchronize];
I am now adding the two arrays theArray & thePriceArray, to the NSMutableArray.I now want to show these information (the information from the arraies) in another tableview. I do this like so:
In My viewDidAppear:
NSUserDefaults *defaults = kSettings;
NSMutableArray *theOrderList = [NSMutableArray arrayWithArray:[defaults objectForKey:ORDER_KEY]];
And to show the contents in the tableview:
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [theOrderList count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *simpleTableIdentifier = #"TheTableCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
}
cell.textLabel.text = [theOrderList objectAtIndex:indexPath.row];
return cell;
}
This is almost working as I want, the contents of theArray and thePriceArray is shown, but in a long list like so:
I want the "key and the value" to be in one cell, so the price and the item name in one cell (Hat - 30) and not seperate, how can I do that? I have tried to use a NSDictionary, but without luck and can I use NSDictionary for this?
You can create two new arrays for favItem and favPrize. Just add your favorite Items to favItem Array and add favorite Prizes to favPrize Array. Now use these arrays to set the labels and detailLabels of your Tableview like :
cell.textLabel.text = [favItems objectAtIndex:indexPath.row];
cell.detailTextLabel.text = [favPrize objectAtIndex:indexPath.row];
Keep both array theArray and thePriceArray seperate and use one as your main array for data source of tableView.
Note : add data from NSUserDefault to respective array.
Now method will be :
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [theArray count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *simpleTableIdentifier = #"TheTableCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubTile reuseIdentifier:simpleTableIdentifier];
}
cell.textLabel.text = [theArray objectAtIndex:indexPath.row];
cell.detailTextLabel.text = [thePriceArray objectAtIndex:indexPath.row];
return cell;
}
You can simply do it using the following code:
NSString *label = [NSString stringWithFormat:#"%# %#",[theOrderList objectAtIndex:(indexPath.row * 2)],[theOrderList objectAtIndex:(indexPath.row * 2)+1]
cell.textLabel.text = label;
And also change your numberOfRowsInSection like:
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [theOrderList count]/2;
}
I'm trying to get a tableview starting from a string in this format "name1,link1,name2,link2..."
So what i'm actually doing is this:
-Get the string and put links and names into an array, then split the array into two lesser ones by the position of the objects
- (void)viewDidLoad
{
NSString *dataString = #"a,www.google.it,b,www.apple.it,c,www.youtube.it";
dataArray = [dataString componentsSeparatedByString:#","];
for (int i=0; i<[dataArray count]; i++) {
if (i%2==0) {
[dataArrayName addObject:[dataArray objectAtIndex:i]];
}
else {
[dataArrayLink addObject:[dataArray objectAtIndex:i]];
}
}
[super viewDidLoad];
}
-Set up the table view
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section;
{
return [dataArrayName count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *MyIdentifier = #"myCell";
// Try to retrieve from the table view a now-unused cell with the given identifier.
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:MyIdentifier];
// If no cell is available, create a new one using the given identifier.
if (cell == nil) {
// Use the default cell style.
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"myCell"];
}
// Set up the cell.
NSString *cellName = [dataArrayName objectAtIndex:indexPath.row];
cell.textLabel.text = cellName;
return cell;
}
But when i run the application the view with the tableview is clear (there are empty rows)
What's the problem?
Have you initialized dataArrayName and dataArrayLink (ie, at some point, before you started adding objects to it, did you say dataArrayName = [[NSMutableArray alloc] init] or an equivalent?
I'm creating a chat application. I have 2 methods in my view controller one for sending and one for receiving the messages. In the sending method i create a NSMutableDictionary with two objects ..
NSMutableDictionary *msgFilter = [[NSMutableDictionary alloc] init];
[msgFilter setObject:messageStr forKey:#"msg"];
[msgFilter setObject:#"you" forKey:#"sender"];
[messages addObject:msgFilter];
"messages" is my main NSMutableArray for holding all the messages, whose property is set and synthesized and allocated. When i send the message it is properly added into the NSMutableArray and the UITableView is updated showing me the values in the cell.
I have a method in my appDelegate to check for messages received and use the same procedure to parse the data and store it in an NSMutableDictionary. This dictionary is then passed to the viewcontroller and added into the same NSMutableArray(messages) and i then call [self.chattable reloadData]. But this doesn't do anything. When i nsloged the NSMutableArray it only had the received message not the whole data(send + received).
Why is it not adding the received messages into the same array and why is it not refreshing my table. I've been trying to get it to work for days now...Plz help..
//Recives message section
NSMutableDictionary *msgFilter = [myDelegate msgFilter];
[messages addObject:msgFilter];
[self.tView reloadData];
//Tableview section
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [messages count];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
-(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];
}
NSDictionary *s = (NSDictionary *) [messages objectAtIndex:indexPath.row];
NSString *sender = [s objectForKey:#"sender"];
NSString *message = [s objectForKey:#"msg"];
if ([sender isEqualToString:#"you"])
{
cell.detailTextLabel.text = [NSString stringWithFormat:#"TX: %at", message];
}
else
{
cell.detailTextLabel.text = [NSString stringWithFormat:#"RX: %at", message];
}
return cell;
}
Declare messages array in Application Delegate. so it will be shared array. so might be your problem get solved. because it is shared array. so you can add Dictionary in messages array from any where, no need to pass dictionary between diff UIView.