I am trying to set a custom background for the rows of a grouped UITableView and I have absolutely no idea how to achieve that.
The table design I am trying to apply on my table looks like this:
And I have sliced it into 3 cell types: top, middle and bottom. How can I apply the custom background for each of the table's cells?
You can set UIImageView as cell backgroundView for first, middle and last cell in function:
-(void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
Check good (and simple) example at:
http://www.planet1107.net/blog/tips-tutorials/custom-grouped-cell-tutorial/
In cellForRowAtIndexPath, check the type of current row and then assign the corresponding background to it.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
// Create cell
// ...
// Configure cell
switch (cellType) {
case TOP:
cell.backgroundView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"top.png"]];
break;
case MIDDLE:
...
}
}
Ray Wenderlich has a very good tutorial on how to do this with Core Graphics: http://www.raywenderlich.com/2033/core-graphics-101-lines-rectangles-and-gradients
This tutorial will give you exactly what you're looking for.
http://cocoawithlove.com/2009/04/easy-custom-uitableview-drawing.html
UITableViewCell has an property backgroundView. Set this value in your tableView:cellForRowAtIndexPath:-method.
https://developer.apple.com/library/ios/#documentation/uikit/reference/UITableViewCell_Class/Reference/Reference.html
Instead of assigning separate image for each, Create one custom cell and assign background image as cell has above. And Crop above image other than inner cells assign that one to UITableView's background view (Plain table view) i.e you dont need to create grouped table view.
Related
Following is the image i have taken from an app from the App Store:
I have created an app that is using StoryBoard with custom tableview cell. The data is loaded in it from a web service. This is what i want:
1) How can i change the size of the uitableviewcell according to the image? For example if one image is 640*500, then the UITableViewCell will change its size accordingly. If the size if the image is 640*1000, then the cell should change its size accordingly.
2) How can i add the grey coloured border around the tableview cells just like in the image above?
3) How can i add a shadow dropping from the UITableViewCell just like in the image above?
Thanks!
Currently i have a partial answer to your question. Part 2 of the question that is the colored border can be solved by the following code:
[cell.contentView.layer setBorderColor:[UIColor colorWithRed:222/255.0f green:222/255.0f blue:222/255.0f alpha:1.0f].CGColor];
[cell.contentView.layer setBorderWidth:5.0f];
Part-1
The height of the tableviewcell is determined using
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
/*
Get the image size
CGFloat width = myImage.size.width;
CGFloat height = myImage.size.height;
use this to return the height of your cell.
*/
}
Part-2 and Part-3
Use..
- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {
//This will give you access to the cell being rendered and any customization you want can be done here... You can use the earlier answer for this part.. I havent tried it but should work..
}
Hope this helps..
I can subclass the cell and resolve the problem, but I'd like to know why this doesn't work.
I set an image in the cell, then in this method, I move the image to the right:
- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
[cell.imageView setFrame:CGRectMake(cell.contentView.bounds.size.width/2 - cell.imageView.frame.size.width/2 + 100,
cell.contentView.bounds.size.height/2 - cell.imageView.frame.size.height/2,
cell.imageView.frame.size.width,
cell.imageView.frame.size.height)];
NSLog(#"center: %#", NSStringFromCGPoint(cell.imageView.center));
NSLog(#"frame: %#", NSStringFromCGRect(cell.imageView.frame));
}
Notice the +100 I added to ensure it's over to the right.
When I check the console, it indicates this:
center: {250, 57.5}
frame: {{150, 7.5}, {200, 100}}
However the output is this:
The image is still aligned to the left side. Can this be changed, and if so, how?
if you go to the header file of UITableViewCell than there you will find...
> // Content. These properties provide direct access to the internal
> label and image views used by the table view cell. These should be
> used instead of the content properties below.
> #property(nonatomic,readonly,retain) UIImageView *imageView
> __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_3_0); // default is nil. image view will be created if necessary.
so as you can see it says readOnly property to the image view... I think this explains your inability to move the imageView.
You can not move the image view. Solution is or to subclass and do your own drawing in drawRect, or to add a subview to the cell.contentView.
Edit:
If an image is set, it appears on the left side of the cell, before
any label. UITableViewCell creates the image-view object when you
create the cell.
From UITableViewCell Class Reference
I'm managed to make my UITableView rows / cells black when data is loaded, to a fashion, I get a white line in between rows, which makes it look awful. How can i make them fully black with and without data ?
Heres the code I'm using at the moment
- (void)tableView:(UITableView *)tableView willDisplayCell:
(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {
cell.backgroundColor = [UIColor blackColor];
}
Heres what I get (with white lines remaining) :(
Change the separator style of your table view.
yourTableView.separatorStyle = UITableViewCellSeparatorStyleNone;
You can do it in Interface Builder too on the properties palette.
-- Edit for clarity following comments below --
Set the entire tableView to have a black background:
[yourTableView setBackgroundColor:[UIColor blackColor]];
This can also be done in the Interface Builder properties panel.
I have a grouped UITableView that has 3 sections. I would like to show a UIImage with some text next to it (not a cell), but I am not sure how I can go about doing that? The image and text need to match the background of the pinstripes.
A UITableView has a backgroundView property that it uses to display the pinstripes for the grouped style. You can either replace the background view or add to it. If you replace it, you lose the pinstripes.
[myTable.backgroundImage addSubview:myImage];
[myTable.backgroundImage addSubview:myLabel];
You don't have to define a custom cell, you can use a standard UITableViewCell. It has properties for text and an image. Assign the image to the imageView property, put the text in the textLabel property.
Depending on the size of your image and your desired placement, you can use the imageView property of the UITableViewCell. Essentially, your cellForRowAtIndexPath will look like this:
- (UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
//Normal cell setup
cell.imageView.image = myImage;
cell.textLabel.text = imageDescription;
return cell;
}
That will create a cell with an image at the left edge with text after it in the middle/right edge
[self.tableView addSubview:myImageView];
[Self.tableView sendSubviewToBack:myImageView];
Or
self.tableView.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:"myimage.png"]];
Use Photoshop to place something on top of an image of the pinstripes.
I am building a UITableViewCell. I am using the style UITableViewCellStyleSubtitle for my table view cell. In the textLabel of the cell I have data that can require a wrap. So to accomodate, I want to move down the detailTextLabel so that the wrapped text isn't covered by the text in the detailTextLabel. I am attempting the following:
CGPoint tempPoint = tableViewCell.detailTextLabel.center;
tempPoint.y += 100;
tableViewCell.detailTextLabel.center = tempPoint;
I have tried similar approaches with the frame of the label, but I could not get it to move. When I log the y of the center point before and after, I always see it start as 0 and then it is just 100 afterwards. I am using the %f flag in NSLog to view the value. This all occurs in the function:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
Any help would be great.
I subclassed UITableViewCell and implemented the - (void)layoutSubviews method. I moved the label in that method.