I would like to know if it is possible to assign some kind of icon/image to the navigation table cells on the left side of the UISplitViewController in an iPad App.
e.g. an image next to row 1...
http://www.cre8ive.kr/blog/wp-content/uploads/SplitViewTest_03.png
I am trying to approach this with editing the
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath;
method.
Here's what I got
// Customize the appearance of table view cells.
- (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.textLabel.text = [NSString stringWithFormat:#"%i", indexPath.row +1];
//Let the magic happen here :D
UIImage *image = [UIImage imageNamed:#"deviantart_dark.png"];
//Nothing changes :(
[[cell imageView] setImage:image];
return cell;
}
Any ideas?
You could use the below code,
cell.contentView.backgroundColor = [UIColor colorWithPatternImage:[UIImage:imageNamed:#"deviantart_dark.png"]];
Related
I have a behavior issue in UITableView,
that behavior issue on youtube.
My code here:
- (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 *fileName = (NSString *)_movies[indexPath.row];
UIImage *thumbnail = [UIImage imageWithContentsOfFile:_movieThumbnails[indexPath.row]];
[cell.textLabel setText:fileName];
[cell.imageView setImage:thumbnail];
[cell.imageView setClipsToBounds:YES];
[cell.imageView setAutoresizingMask:UIViewAutoresizingNone];
return cell;
}
The first thumbnail resolution is 640*360, second is 160*90,
Cell height is 60.
Test device is iPhone 5 iOS 7.1.2, and iPhone 5s iOS 7.0.6,
Those has same behavior issue.
tableView:willDisplayCell:forRowAtIndexPath: on here:
- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
[cell.imageView setFrame:CGRectMake(15.0f, 0.0f, 106.0f, 60.0f)];
}
This frame size is current imageView frame by log.
Ok so the reason for this behavior is that tapping delete button launches animation which changes frame of the content view and this results in this weird animation.
Solution is to create a subclass of UITableViewCell and in layoutSubviews method change the frame of the imageView and label to fit contentView properly (assuming that size of the image is always the same). This way you would end up with something like this in your TableViewDatasource:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[CustomTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
return cell;
}
- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *fileName = (NSString *)_movies[indexPath.row];
UIImage *thumbnail = [UIImage imageWithContentsOfFile:_movieThumbnails[indexPath.row]];
[cell.textLabel setText:fileName];
[cell.imageView setImage:thumbnail];
}
Also if you're targeting iOS 6 and higher you can use registerClass:forCellReuseIdentifier: in UITableView and simplify the code above a bit (remove boilerplate code with allocating table view cell).
I have a small amount of data to show in a table and so I would like to load it all. Below is my code and for some reason nothing is showing up. Can you please have a look at what I have done wrong. Thanks
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
NSString *CellIdentifier = [NSString stringWithFormat:#"S%1dR%1d",indexPath.section,indexPath.row];
TableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[TableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
// Configure the cell...
long row = [indexPath row];
cell.BBname.text = _BBNames [row];
cell.BBtype.text = _BBTypes [row];
cell.BBimage.image = [UIImage imageNamed:_BBImages [row]];
if([self getCheckedForIndex:indexPath.row]==YES)
{
cell.accessoryType = UITableViewCellAccessoryCheckmark;
}
return cell;}
is "TableViewCell" your custom cell?
if not use "UITableViewCell" instead
if you are using interface builder for your custom cell, use initializer
[[NSBundle mainBundle] loadNibNamed: owner: options:]
also make sure your tableview delegate is set, specifically implement
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"GenusNameCell";
GenusNameCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[GenusNameCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"GenusNameCell"];
cell.GenusNameLabel.text = [genusName objectAtIndex:indexPath.row];
[cell setAccessoryType:UITableViewCellAccessoryDisclosureIndicator];
}
return cell;
}
I have a tableview with an Array of objects but when I run it. Nothing shows up. Im fairly new to xcode but Im not sure what my mistake is in the code. Can some one help me out?
If the cellForRowAtIndexPath callback is never called, it could be:
you didn't have set the dataSource of your tableview;
you didn't implement the numberOfSectionsInTableView: and/or tableView:numberOfRowsInSection: callbacks.
And if you dequeue your cell, you need to set the text outside the if branch like this:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"GenusNameCell";
GenusNameCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[GenusNameCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"GenusNameCell"];
[cell setAccessoryType:UITableViewCellAccessoryDisclosureIndicator];
}
cell.GenusNameLabel.text = [genusName objectAtIndex:indexPath.row];
return cell;
}
Change the code like this your code will run,
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"GenusNameCell";
GenusNameCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[GenusNameCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"GenusNameCell"];
[cell setAccessoryType:UITableViewCellAccessoryDisclosureIndicator];
}
cell.GenusNameLabel.text = [[genusName objectAtIndex:indexPath.row] geniusname];
return cell;
}
geniusname is the NSString you stored the name of the person.
have a UITableViewCell "postCell" that is an IBOutlet and is attached to a cell I have placed in my .xib. To set the text label:
- (void)viewDidAppear:(BOOL)animated
{
postCell.textLabel.text = #"TEXT";
}
Nothing ever appears.
Edit: This cell is not part of a Table View. Every answer I have seen is assuming it is. This is a single UITableViewCell.
- (NSInteger) tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return 1;
}
- (UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath: (NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
PostCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[PostCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cell.textLabel.text = #"text";
return cell;
}
You can set text label for the cell in method cellForRowAtIndexPath, please see example below.
- (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 = #"Cell Title";
return cell;
}
There are a few delegate methods that you need to implement. Here are the two most important ones
tableView:cellForRowAtIndexPath:
tableView:numberOfRowsInSection:
Here's a full tutorial on how to implement a table view.
http://www.raywenderlich.com/?p=1797
In my project I have tableViews with static cells as well as tableViews with dynamic cells. In order to customized I've managed to get a gradient background on the cells (grouped sytle).
It works ok with dynamic TableViews as I set the background view in cellForRowAtIndex... according to the position of the row (Top, Bottom, Middle or single).
However, when I try to implement it on the static tableview cells, it doesn't work. I've tried to implement the cellForRowAtindex... but it crashes.
Does someone have an idea?
Update: the code for cellForRow..
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
UACellBackgroundView *bgw=[[UACellBackgroundView alloc]init];
if (indexPath.row==0) {
bgw.position = UACellBackgroundViewPositionTop;
cell.backgroundView=bgw;
}else if (indexPath.row==2){
bgw.position = UACellBackgroundViewPositionBottom;
cell.backgroundView=bgw;
}else {
bgw.position = UACellBackgroundViewPositionMiddle;
cell.backgroundView=bgw;
}
// cell.backgroundView=bgw;
return cell;
}
By the way, the Background view I got it from here: http://code.coneybeare.net/how-to-make-custom-drawn-gradient-backgrounds and here: http://pessoal.org/blog/2009/02/25/customizing-the-background-border-colors-of-a-uitableview/
if somebody is interested
It doesn't look like you are alloc the UITablViewCell, you need to alloc the cell.
For example:
- (UITableViewCell *)tableView:(UITableView *)tableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
// alloc the UITableViewCell
// remeber if you are not using ARC you need to autorelease this cell
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cell.textLabel.text = #"Cell Name";
cell.detailTextLabel.text = #"Cell Detail";
return cell;
}
Add this statement:
if (cell == nil) {
// alloc the UITableViewCell
// remeber if you are not using ARC you need to autorelease this cell
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
If you have a UITableViewController subclass with a static table you should not try to dequeue cells.
Instead you should ask super for the cell. The superclass will get the cell from the storyboard and you can configure it.
Something like this:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [super tableView:tableView cellForRowAtIndexPath:indexPath];
UIView *selectedBackgroundView = [[UIView alloc] init];
cell.selectedBackgroundView = selectedBackgroundView;
cell.selectedBackgroundView.backgroundColor = [UIColor mb_tableViewSelectionColor];
return cell;
}
Works for all other attributes as well.