I've a table view. In each cell (row), i want to show two buttons. initially both are red in color. when one button is clicked, it turns green and other will be in red.
I created a view which has two buttons. I am using IB to create the view.
i'm using following code to show the my table view to show the custom view:
- (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];
}
NSArray *bundle = [[NSBundle mainBundle] loadNibNamed:#"CellView"
owner:self options:nil];
CellView *myView;
for (id object in bundle) {
if ([object isKindOfClass:[CellView class]])
myView = (CellView *)object;
}
NSString* str = [testArray objectAtIndex:indexPath.row];
NSArray* arr = [str componentsSeparatedByString:#" "];
myView.left.titleLabel.text = [arr objectAtIndex:0];
myView.right.titleLabel.text = [arr objectAtIndex:1];
[cell.contentView addSubview:myView];
return cell;
}
Above code works fine but when the button is clicked, its showing the button with text that I created in IB. I am not understanding why is it happening?
Can some one guide me how to show a button in cell and handle its action?
I think you have to specify the titleLabel for different states of button. Then this code will work fine.
Related
I wanted to simply animate custom view in a custom table cell by swiping left or right in that cell. I am loading the cell from the xib.
This is the code I used to populate the cell from the xib.
- (UITableViewCell *)tableView:(UITableView *)tableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"CellIdentifier";
CustomCell *CustomCell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (CustomCell == nil)
{
NSArray *cells =[[NSBundle mainBundle] loadNibNamed:#"CustomCell" owner:nil options:nil];
for (UIView *view in cells)
{
if([view isKindOfClass:[UITableViewCell class]])
{
CustomCell = (CustomCell *)view;
break;
}
}
}
CustomCell.textLabel.Text = #"this is a text";
return CustomCell;
}
What I need is to swipe a cell to reveal a background view with buttons. I have searched and find many tutorials regarding this but none of the same is using the custom cell with xib.
Check out this project
UITableViewCell Swipe
hi try this for your requirement of swipe a cell to reveal a background view with buttons.
jzswipecell
I am new to iphone.I have a small question that is,I have a class CustomCell in that i have declare all elements which i have required like the below
// CustomCell.h
here in this class i am setting the getter and setter methods to TitleLabel, PercentageLabel, ProgressView, downloadButton
// CustomCell.m
here in this class set the frame to above all,and set the image to the download button also here
screen shot of my output screen is
// In my table view i have a download button when we click that the following method will executes
-(void)downloadButtonClicked:(id)sender
{
NSLog(#"download button clicked");
int index = [sender tag];
NSLog(#"index of the cell is %d",index);
UIButton *button = (UIButton*)sender;
UITableViewCell *cell = (UITableViewCell *)[[button superview] superview];
UILabel *titleLabel = (UILabel *)[cell viewWithTag:100];
NSLog(#"label text =%#",titleLabel.text);
UIView *senderButton = (UIView*) sender;
NSIndexPath *indexPath = [tableView indexPathForCell: (UITableViewCell*)[[senderButton superview]superview]];
NSLog(#"indexpath is %d",indexPath.row);
CustomCell *customCell = [[CustomCell alloc]init];
progressView = [[UIProgressView alloc]init];
// [customCell.contentView insertSubview:progressView atIndex:indexPath.row];
[customCell.contentView addSubview:progressView];
selectedBookTitle = titleLabel.text;
NSString* documentsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSMutableArray *allDownloadLinks;
biblePlayerViewController = [[BiblePlayerViewController alloc]init];
allDownloadLinks = [biblePlayerViewController allDownloadLinks];
NSLog(#"all Download Links are %#",allDownloadLinks);
biblePlayerViewController.indexOfSelectedBookTitle = [[appDelegate getBookNames]indexOfObject:selectedBookTitle];
Download* download = [Download downloadWithTitle:selectedBookTitle url:[NSURL URLWithString:[NSString stringWithFormat:#"http://www.audiotreasure.com/%#.zip",[allDownloadLinks objectAtIndex:(biblePlayerViewController.indexOfSelectedBookTitle)]]]PathtoSave:documentsPath];
[[DownloadManager sharedDownloadManager] queueDownload: download];
}
// In cellForRowAtIndexPath tableview delegate method I have written code like this
- (UITableViewCell *)tableView:(UITableView *)_tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
CustomCell *cell = [_tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[CustomCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
NSLog(#"indexpath.row is %d",indexPath.row);
NSLog(#"downloadmanager is %d",[[[DownloadManager sharedDownloadManager]getDownloads]count]);
/* if (indexPath.row<[[[DownloadManager sharedDownloadManager] getDownloads]count])
{
cell.TitleLabel.text = ((Download*)[[[DownloadManager sharedDownloadManager] getDownloads] objectAtIndex:indexPath.row]).title_;
cell.ProgressView.progress = (float)(((Download*)[[[DownloadManager sharedDownloadManager] getDownloads] objectAtIndex:indexPath.row]).PercentageDownloaded_ )/100.0f;
cell.PercentageLabel.text = [NSString stringWithFormat:#"%d %%",((Download*)[[[DownloadManager sharedDownloadManager] getDownloads] objectAtIndex:indexPath.row]).PercentageDownloaded_];
}
else
{
[tableView reloadData];
}*/
NSString *titleLabel = [[appDelegate getBookNames]objectAtIndex:indexPath.row];
cell.TitleLabel.text = titleLabel;
cell.downloadButton.tag = indexPath.row;
NSLog(#"tag is %d",cell.downloadButton.tag);
[cell.downloadButton addTarget:self action:#selector(downloadButtonClicked:) forControlEvents:UIControlEventTouchUpInside];
return cell;
}
My question is I have 66 cells in tableview in screen shot we have a bookname called Revelation.It has a 66th cell in my tableview (index is 65).Here when i click the download button in that cell,I have to show progress view in that particular cell only (65th cell).I have reload the table view for every 1 sec also because after placing the progress view we have to show the progress in that progress view in that cell.So, how can we place a progress view in that particular cell index.
Why don't you add the progress view in the cell from the beginning?
have it initially hidden and when you touch the download button you tell the cell to show it.
i see that you store the indexPath.row of the cell in the download button tag. You could use that to find out what cell was selected something like below.
NSIndexPath *cellIndexPath = [NSIndexPath indexPathForRow:sender.tag inSection:0];
CustomCell *cell = (CustomCell *)[tableView cellForRowAtIndexPath:nowIndex];
[cell showProgressBar];
i wrote the code of top of my head..didn't tested it.
I'm semi new to developing for iOS.
And when i try to customize a tableview cell to put an image under the description text, it works, until i scroll, then it gets all messed up.
When i scroll down, then back up, the image is in a cell it shouldn't be in. :/
I deleted the code because it wasn't working. But what i was doing was creating a UIView with a frame, with a UIImageView inside it. Then i add it to cell.contentView.
Which works, until i scroll.
So could someone please help :/
Edit: here is what it looks like for anyone interested, i got it working. (Thanks Jonathan)
#define LEVEL_TAG 1
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UIImageView *showLevel;
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
showLevel = [[[UIImageView alloc] initWithFrame: CGRectMake(65, 50, 0, 11)] autorelease];
showLevel.tag = LEVEL_TAG;
[cell.contentView addSubview: showLevel];
} else {
showLevel = (UIImageView *)[cell.contentView viewWithTag:LEVEL_TAG];
}
NSDictionary *dictionary = [listOfItems objectAtIndex:indexPath.section];
NSArray *levelArray = [dictionary objectForKey:#"Levels"];
NSString *levelValue = [levelArray objectAtIndex:indexPath.row];
UIImage *levelImage = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource: levelValue ofType:#"png"]];
CGImageRef starImage = levelImage.CGImage;
NSUInteger levelWidth = CGImageGetWidth(starImage);
showLevel.frame = CGRectMake(65, 50, levelWidth, 11);
showLevel.image = levelImage;
return cell;
}
It's because of the way the tableView reuses old cells, rather than creating new ones every time the user scrolls, which would make everything slower, and less efficient.
Have a look at Listing 5-3 on the Apple Documentation about customizing UITableViewCells, it shows you how to set up the cell, within the if statement where the cell is actually created, and not where the cell could have been reused.
When Ever I try to load data from an array into my table using custom cells it only shows the last cell like its overwriting all the cells until I Get to the end of the list. The table was created programmatically and when the cells don't load the blank table scrolls. If however I load the cells then only the last cell shows up and it won't scroll.
I figure I made a typo or something but I can't really see anything that would be of much help. The parser works and the array is fine its just that the cells are acting strange. I wanted to make it so that I had a fixed bar over the table as well but first I needed to get the custom cells to show up in the table and scroll properly
schedule.h
#interface Schedule : UIViewController <UITableViewDelegate, UITableViewDataSource> {
IBOutlet UITableView *newsTable;
UIActivityIndicatorView *activityIndicator;
CGSize cellSize;
NSXMLParser *fileParser;
NSMutableArray * events;
NSMutableArray * announcements;
NSMutableDictionary * item;
NSString *currentElement;
NSMutableString * currentTitle, * currentDate, * currentSummary, * currentId, * curr entTime, *currentContent;
UITableViewCell *appCell;
}
#property(nonatomic, retain)IBOutlet UITableView *newsTable;
#property(nonatomic, retain)IBOutlet UITableViewCell *appCell;
-(void)parseXMLFileAtURL:(NSString *)URL;
#end
schedule.m
- (void)loadView{
UITableView *tableView = [[UITableView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]
style:UITableViewStylePlain];
tableView.autoresizingMask = UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleWidth;
tableView.delegate = self;
tableView.dataSource = self;
tableView.tag = 4;
[tableView reloadData];
self.view = tableView;
[tableView release];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
// Customize the number of rows in the table view.
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [events count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"MyCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
[[NSBundle mainBundle] loadNibNamed:#"CustomCell" owner:self options:nil];
cell = appCell;
self.appCell = nil;
}
// Configure the cell.
UILabel *label;
label = (UILabel *)[cell viewWithTag:1];
int eventIndex = [indexPath indexAtPosition: [indexPath length] - 1];
label.text = [[events objectAtIndex: eventIndex] objectForKey: #"event"];
return cell;
}
- (void)parserDidEndDocument:(NSXMLParser *)parser {
NSLog(#"webpage parsed");
NSLog(#"events array has %d items", [events count]);
newsTable = (UITableView*)[self.view viewWithTag:4];
[newsTable reloadData];
}
I added more code the problem may be somewhere else.
I think your problem is that the cell is being released. When you call self.appCell = nil;, the object will be released and the variable set to nil. Try changing cell = appCell; to cell = [[appCell retain] autorelease]; so that the cell is retained long enough for the table view to retain it again.
Also, you could change int eventIndex = [indexPath indexAtPosition: [indexPath length] - 1]; to int eventIndex = indexPath.row;. The row and section properties were added to NSIndexPath specifically for use in UITableView, and it is guaranteed that the index path passed to cellForRowAtIndexPath: will contain exactly two indices.
try with following code;
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
NSString *CellIdentifier = #"CellIdentifier";
CustomCell *cell = (CustomCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier]; // CustomCell is the class for standardCell
if (cell == nil)
{
NSArray *objectList = [[NSBundle mainBundle] loadNibNamed:#"CustomCell" owner:self options:nil];
for (id currentObject in objectList) {
if([currentObject isKindOfClass:[UITableViewCell class]]){
cell = (CustomCell*)currentObject;
break;
}
}
cell.label.text = [[events objectAtIndex: indexPath.row] objectForKey: #"event"];
}
return cell;
}
when you load the xib file with NSBundle, it will return an array of Bundle. Then you have to check it and then use it.
If you tried like;
NSString *memberName; // member variable
NSString *name = memberName;
memberName = nil;
// the member variable "memberName, giving the reference to name;
//So if you set memberName as nil, name also become a nil value.
// You have to use like;
name = [memberName retain];
memberName = nil;
Try to learn more about iPhone development documents.
Click here for Documentation.
Click here for sample code.
I think it will help you.
I have TableCellViewController for managing cells in my UITableView. Each cell has a label na UISwitch (dictTypeSwitch). A want to assign method to switch events so I can save the state of button.
So far I've done this:
assign setState function to object:
[cell.dictTypeSwitch addTarget:self action:#selector(setState:) forControlEvents:UIControlEventTouchUpInside];
function for handling event:
- (void)setState:(id)sender {
BOOL state = [sender isOn];
NSString *rez = state == YES ? #"YES" : #"NO";
NSLog(rez);
}
From sender I get UISwitch object from which I can get state.
So far everything is ok.
But if I want to save the state of UISwitch, I have to get rowIndex for this cell.
How can I achieve this?
The cells are made inside function cellForRowAtIndexPath. Se the code bellow:
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"DictionariesTableCellViewController";
DictionariesTableCellViewController *cell = (DictionariesTableCellViewController *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:#"DictionariesTableCellViewController" owner:nil options:nil];
for (id currentObject in topLevelObjects) {
if ([currentObject isKindOfClass:[UITableViewCell class]]) {
cell = (DictionariesTableCellViewController *) currentObject;
break;
}
}
}
// Configure the cell...
cell.dictTypeLabel.text = [NSString stringWithFormat:#"row - %i",indexPath.row];
[cell.dictTypeSwitch addTarget:self action:#selector(setState:) forControlEvents:UIControlEventTouchUpInside];
return cell;
}
Thanks
You can use the UISwitch's .tag property to store an arbitrary integer. This can be set to the row index.
If it is possible to find the UITableViewCell from UISwitch's parent, you could get the index path with
NSIndexPath* indexPath = [theTableView indexPathForCell:theCell];