I am having trouble centering a 200x200 image horizontally inside a customized UITableViewCell. I have set the tableViewheightForRowAtIndexPath in the UITableViewDelegate to the appropriate value, but that doesn't center my image horizontally, it does so only vertically (better than nothing I guess). I also tried to change the value of the imageView.frame in layoutSubviews in my customized cell, but that doesn't seem to have any effect. I have even commented it out, placed it before [super layoutSubviews];, played around with the values of the frame, but I keep getting the same result.
Can anyone help me with this? What code should I write to achieve such an effect?
Thanks.
You will try this code its help you
You need to subclass UITableViewCell and override layoutSubviews, as follows:
- (void) layoutSubviews
{
[super layoutSubviews];
self.imageView.frame = CGRectMake( 10, 10, 50, 50 ); // your positioning here
}
In your cellForRowAtIndexPath: method, be sure to return an instance of your new cell type.
UITableViewCell *cell = (UITableViewCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
UIImageView *imgView;
if(cell == nil)
{
cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
imgView = [[UIImageView alloc] initWithFrame:(100,0,100,62)];
[imgView setImage:[UIImage imageNamed:#"img.png"]];
imgView.tag = 55;
[cell.contentView addSubview:imgView];
[imgView release];
}
else
{
imgView = (id)[cell.contentView viewWithTag:55];
}
Related
I am trying to use a custom image for the UIAccessoryView, however I can't seem to get it to work. When the table view launches, it doesn't update with any of the images. My code is the following:
- (UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *tableViewCell = [tableView dequeueReusableCellWithIdentifier:#"Cell"];
MenuItem *menuItem = [self.menuItems objectAtIndex:indexPath.row];
if (!tableViewCell)
{
tableViewCell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"Cell"];
tableViewCell.textLabel.font = [UIFont fontWithName: CaptionDistractionBodyFontName size: 15];
imageView.contentMode = UIViewContentModeCenter;
tableViewCell.accessoryView = [[UIImageView alloc] initWithImage:nil];
}
tableViewCell.textLabel.text = menuItem.name;
UIImageView *imageView = (UIImageView*)tableViewCell.accessoryView;
imageView.image = nil;
if (menuItem.type == MenuItemTypeCheckMark)
{
if (menuItem.isCheckMarked)
{
imageView.image = [UIImage imageNamed:#"DisclosureViewX"];
}
}
else if (menuItem.type == MenuItemTypeSubmenu)
{
imageView.image = [UIImage imageNamed:#"DisclosureViewArrow"];
}
return tableViewCell;
}
I've tried a lot of different stuff, i.e. calling setNeedsLayout, moving the code to a custom UITableViewCell in layoutSubviews and nothing seems to work. Aside from just creating a whole new accessory view myself, what is the correct way to go about this?
Since you initially setup the UIImageView with a nil image, the image view's frame has a zero width and height. You need to reset the frame after assigning an actual image.
imageView.image = [UIImage imageNamed:#"DisclosureViewX"];
imageView.frame = CGRectMake(0, 0, imageView.image.size.width, imageView.image.size.height);
Edit:
Actually it would be even easier to call [imageView sizeToFit] after setting the image instead of setting the frame.
try doing
tableViewCell.accessoryView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"DisclosureViewX"]];
I think your problem is that image view creates with zero size. Use initWithFrame: or initWithImage:, where image is not nil. After created with initWithImage:, image view will have bounds set to image size. A cell will center the accessory view automatically.
I am loading custom separator image in uitableview cell.
Here is my code :
- (UITableViewCell *)tableView:(UITableView *)aTableView cellForRowAtIndexPath: (NSIndexPath *)indexPath
{
static NSString *CellID=#"Cell"
MyTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellID];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:SwitchCellIdentifier];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
UIImageview *aSwitch = [[UIImageview alloc] initWithImage:[UIImage imageNamed:#"divider.png"]];
separator.frame = CGRectMake(0,50,320,1);
[cell.contentView addSubview:seperator];
}
if(cell.height == 22)
{
/// here i am setting frame for uiimageview
}
but i am getting seperator image disappears for only one row out of 20 while scrolling.
Can you please help why it is loading like this.
If you've put your separator UIImage out of the bounds of the cell, and set cell.clipsToBounds = NO; to have the separator image displayed, the separator image might get hidden by drawing the next cell.
You can't control the z-index of the cells as they're being drawn on screen, it depends from where you're scrolling (bottom to top, or top to bottom).
If that's indeed you're issue, you can either put the divider inside the cell's frame, or if your separator is thin enough use:
[TableView setSeparatorColor:[UIColor colorWithPatternImage:[UIImage imageNamed:...]]];
self.tblView=[[UITableView alloc] initWithFrame:CGRectMake(0,0,320,370) //set as u need
style:UITableViewStylePlain];
self.tblView.delegate=self;
self.tblView.dataSource=self;
[self.view addSubview:self.tblView];
UIView *v = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 10)];//set as u ne
v.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:#"divider.png"]];
[self.tblView setTableHeaderView:v];
[self.tblView setTableFooterView:v];
[v release];
I am adding label to uiimage and then adding that image on uitable view. but it is not showing. Can anyone help please?
This is code i am using:
- (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 setSelectionStyle:UITableViewCellSelectionStyleNone];
}
//image which contains label
UIImageView *BgImage=[[UIImageView alloc] initWithImage:[UIImage imageNamed:#"cell-bg.png"]];
BgImage.frame=cell.frame;
//label which will be on image
UILabel *NameLAbel=[[UILabel alloc]initWithFrame:CGRectMake(25, 5, 45, 45)];
NameLAbel.textColor=[UIColor blackColor];
if (indexPath.row==0) {
NameLAbel.text=#"Home";
}
else if (indexPath.row==1) {
NameLAbel.text=#"You";
}
else if (indexPath.row==2) {
NameLAbel.text=#"Contacts";
}
else if (indexPath.row==3) {
NameLAbel.text=#"Settings";
}
else {
NameLAbel.text=#"Sign Out";
}
NSLog(#"%#",NameLAbel.text);
[BgImage addSubview:NameLAbel];
//adding image on cell
[cell.contentView addSubview:BgImage];
[NameLAbel release];
[BgImage release];
return cell;
}
I'm not sure if you can actually add a UILabel to an UIImageView, although they are both UIView subclasses, I think the imageview will only display the image.
try adding the label to cell.contentView after you've added the image to the view. That should achieve the affect you are after.
Either that, or create of UIView which will hold both the UIImageView and the UILabel
Adding some UI widget as a subview of a UIImageView sounds really questionable. Even if it works now it may not work in the future, and I believe this breaks the UIKit convention. If you want to make one view look like it is "part of" another view, place the two as siblings, either directly in the cell.contentView as Amit noted, or if you want clipping so that the label looked like it was being clipped by the image, create a UIView container, enable the "clip subviews" setting of that view, and place the UIImageView and UILabel as siblings within that container UIView.
I am using a UITableView to display some information about the consequences of driving to fast: What the fine is going to be etc. I also use some red "dots" that you get in your driving licence. Since this can be between 0 - 6 for each row I have done the following:
- (UITableViewCell *)tableView:cellForRowAtIndexPath:
// Code if no cell is available in the que
// End of that code
UIImage *seniorImage = [UIImage imageNamed:#"ticket_dot.png"];
if (seniorDots == 0) {
} else {
for (int i = 0; i < seniorDots; i++) {
UIImageView *seniorImageView = [[UIImageView alloc] initWithFrame:CGRectMake(40.0 + (i * 15.0), 40.0, 15.0, 40.0)];
seniorImageView.image = seniorImage;
seniorImageView.contentMode = UIViewContentModeCenter;
[cell.contentView addSubview:seniorImageView];
[seniorImageView release];
}
}
seniorDots is a variable that I get from a plist file. The code is working as intended but as you may see I have no way of removing them. So the first time I open the tableview I see the expected view, but if I scroll up again the code just keep adding UIImageViews on the cell, not removing the old ones. How can I reference these dots to remove them from screen before adding new ones?
UITableViewCell *cell = (UITableViewCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
UIImageView *imgView;
if(cell == nil)
{
cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
imgView = [[UIImageView alloc] initWithFrame:CGRectMake(100,0,100,62)];
[imgView setImage:[UIImage imageNamed:#"img.png"]];
imgView.tag = 55;
[cell.contentView addSubview:imgView];
[imgView release];
}
else
{
imgView = (id)[cell.contentView viewWithTag:55];
}
You can put below code inside your cellForRowAtIndexPath method:
//Remove Other Data
for (UIImageView *img in cell.contentView.subviews) {
if ([img isKindOfClass:[UIImageView class]]) {
[img removeFromSuperview];
}
}
I hope it will be helpful to you. Let me know in case of any difficulty.
I'm trying to figure out how to place a subview to a custom UITableViewCell with centered position. As stated in the documentation (Customizing Cells) one should "...add subviews to the contentView property of the cell object or ...". As I noticed it works fine with UITableViewStylePlain. In UITableViewStyleGrouped tables, subviews can not be placed centered. They are shifted to the right hand side.
If the subview is added to UITableViewCell directly, it's fine with both modes. The same is true, if I subclass the UITableViewCell and load the cell from XIB.
Unfortunately, I can't upload screenshots. Can anyone help fix the issue? Or do I miss something vital, as the misalignment seems to match the dimension to be shrunken in grouped table.
Many thanks,
El
- (UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *cellIdentifier1 = #"AddToCell";
static NSString *cellIdentifier2 = #"AddToContentView";
static NSString *aVeryLongLine = #"---------------------------------------------";
UITableViewCell *cell = nil;
if (indexPath.section == 0) {
cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier1];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:cellIdentifier1] autorelease];
CGRect frame = cell.frame;
CGRect labelFrame = CGRectMake((frame.size.width-270)/2, (frame.size.height-40)/2, 270, 40);
UILabel *label = [[UILabel alloc] initWithFrame:labelFrame];
label.textAlignment = UITextAlignmentCenter;
label.text = aVeryLongLine;
[cell addSubview:label];
[label release];
}
}
else if (indexPath.section == 1) {
cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier2];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:cellIdentifier2] autorelease];
CGRect frame = cell.contentView.frame;
CGRect labelFrame = CGRectMake((frame.size.width-270)/2, (frame.size.height-40)/2, 270, 40);
UILabel *label = [[UILabel alloc] initWithFrame:labelFrame];
label.textAlignment = UITextAlignmentCenter;
label.text = aVeryLongLine;
[cell.contentView addSubview:label];
[label release];
}
}
else {
}
return cell;
}
Instances of UITableViewCell resize their content views under a number of circumstances (for example, when temporarily adding a delete button to allow the user to remove a row).
When cells are displayed in a grouped style table view, they're resized to provide a margin between the cells and the left and right edges of the table view. So for your subviews to stay positioned correctly, you'll need to set their autoresizing masks appropriately, something like this:
mySubview.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin;
(or
[mySubview setAutoresizingMask:(UIViewAutoresizingFlexibleWidth |
UIViewAutoresizingFlexibleLeftMargin |
UIViewAutoresizingFlexibleRightMargin)];
for folks who prefer the old syntax.)
Did you check the frame's value, which come from cell.contentView.frame or cell.frame ?
When the cell is initialized with style and identity, it maybe have a CGZeroRect for his frame value.