无法更改iOS 7（iPad）上静态表格视图单元格的背景颜色

Question

I am unable to change the background color of static UITableViewCells on iOS 7, when running on iPad device. You can easily check this with following setup:

• Make a new universal project in Xcode 5 with two storyboards.
• In each storyboard, put only one controller - table view controller, and set it as the initial one.
• Put a few (eg 3) static cells in the table view in both controllers/storyboards.
• Set the background color of each static cell to different colors in Interface Builder (I use red, green, and clear colors).

Now, run the app on iPhone and iPad simulators (iOS 7).

On the iPhone simulator, everything is ok;
while on the iPad simulator, all cells are colored white.

I tried to force iPad to work correctly by setting runtime properties in Interface Builder for cells:

• backgroundColor to clear color
• contentView.backgroundColor to clear color
• backgroundView to nil

but nothing helps. Actually, setting the runtime property of contentView.backgroundColor will change the cell color, but it does not work with clear color (which means there is another view colored in white behind it).

It is very strange that two devices on same version of iOS produce different results. Can anyone else confirm this bug?

Does anyone have a solution to this problem, or the only way is to go for dynamic properties + setting color in cellForRowAtIndexPath ? I would like to use static cells, because the nature of the problem is static.

ps I just realized that I forgot to try to set the backgroundView.backgroundColor runtime property to clear color, and I don't have access to a Mac at the moment. Maybe that would do the trick.

Answer 1

Do this:

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {
     UIImage *pattern = [UIImage imageNamed:@"image.png"];
     [cell setBackgroundColor:[UIColor colorWithPatternImage:pattern]];  
}

Work for me on IOS7

Answer 2

According to Apple's doc :

Whether you use a predefined or custom cell, you can change the cell's background using the backgroundView property or by changing the inherited backgroundColor property. In iOS 7, cells have a white background by default; in earlier versions of iOS, cells inherit the background color of the enclosing table view. If you want to change the background color of a cell, do so in the tableView:willDisplayCell:forRowAtIndexPath: method of your table view delegate.

So no matter what color you set in tableView:cellForRowAtIndexPath: , iOS 7 changes it to white later. Just set it in tableView:willDisplayCell:forRowAtIndexPath: . Worked for me perfectly.

Answer 3

The only way I could fix this problem was to make the table programmatically instead of using the storyboard. For reference I will post my solution, I hope it can help anyone.

I replaced the uitableviewcontroller for a uiviewcontroller.

then added this:

the header file

#import <UIKit/UIKit.h>

@interface LtHomeViewController : UIViewController <UITableViewDelegate, UITableViewDataSource>
{
NSArray *mFiles;
NSArray *mPics;
}

@end

And the module file

#import "LtHomeViewController.h"
#import "LtHomeToolbar.h"
#import "LtHomeCustomCell.h"

@interface LtHomeViewController () <LtHomeToolbarDelegate>

@end

@implementation LtHomeViewController
{
LtHomeToolbar *mainToolbar;
UITableView *theListView;
}

#define TOOLBAR_HEIGHT 64.0f

-(UIStatusBarStyle)preferredStatusBarStyle{
 return UIStatusBarStyleLightContent;
}

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
    // Custom initialization
}
return self;
}

- (void)viewDidLoad
{
[super viewDidLoad];

CGRect toolbarRect = self.view.bounds; // View controller's view bounds
toolbarRect.size.height = TOOLBAR_HEIGHT;

mainToolbar = [[LtHomeToolbar alloc] initWithFrame:toolbarRect]; // At top
mainToolbar.delegate = self;

[self.view addSubview:mainToolbar];

//
mFiles = [[NSArray alloc] initWithObjects:@"../Lumina.app/lumina0.pdf", @"../Lumina.app/lumina8.pdf", @"../Lumina.app/lumina9.pdf", @"../Lumina.app/lumina10.pdf", nil];
mPics = [[NSArray alloc] initWithObjects:@"vol0.jpg", @"vol8.jpg", @"vol9.jpg", @"vol10.jpg", nil];
//
CGRect tableViewFrame = self.view.bounds;
tableViewFrame.origin.y = TOOLBAR_HEIGHT;
tableViewFrame.size.height = self.view.bounds.size.height - TOOLBAR_HEIGHT;

theListView = [[UITableView alloc] initWithFrame:tableViewFrame style:UITableViewStylePlain];
theListView.delegate = self;
theListView.dataSource = self;

theListView.backgroundColor = [UIColor colorWithRed:(116/255.0) green:(167/255.0) blue:(179/255.0) alpha:1.0];


[self.view addSubview:theListView];
}

#pragma mark - UITableViewDataSource
- (NSInteger)numberOfSectionsInTableView:(UITableView *)theTableView
{
   return 1;
}

- (NSInteger)tableView:(UITableView *)theTableView numberOfRowsInSection:(NSInteger)section
{
   return [mFiles count];
}

- (UITableViewCell *)tableView:(UITableView *)theTableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
   static NSString *cellIdentifier = @"HomeCell";

   // Similar to UITableViewCell, but
   LtHomeCustomCell *cell = (LtHomeCustomCell *)[theTableView dequeueReusableCellWithIdentifier:cellIdentifier];
  if (cell == nil) {
    cell = [[LtHomeCustomCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
  }

cell.image.image = [UIImage imageNamed:[mPics objectAtIndex:indexPath.row]];

NSString *magName = [[mFiles objectAtIndex:indexPath.row]stringByReplacingOccurrencesOfString:@"../Lumina.app/" withString:@""];
magName = [magName stringByReplacingOccurrencesOfString:@"lumina" withString:@""];
magName = [magName stringByReplacingOccurrencesOfString:@".pdf" withString:@""];
magName = [[@"Triathlon LUMINA " stringByAppendingString:magName]stringByAppendingString:@"号"];

cell.descriptionLabel.text = magName;

return cell;
}

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {
cell.backgroundColor = [UIColor colorWithRed:(116/255.0) green:(167/255.0) blue:(179/255.0) alpha:1.0];
}

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return 110;
}

#pragma mark - UITableViewDelegate
- (void)tableView:(UITableView *)theTableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
}


@end

Now I don't know if only this line will help you but as I need more things I took the approach of making the table manually

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath 
{
    cell.backgroundColor = [UIColor colorWithRed:(116/255.0) green:(167/255.0) blue:(179/255.0) alpha:1.0];
}

David

Answer 4

There is a much easier way to override the cell background color. Subclass UITableViewCell and set it as the class for the static tableview cell. Then override:

-(void) willMoveToSuperview:(UIView *)newSuperview  {
    self.backgroundColor = [UIColor ...];
}

where [UIColor ...] = whatever color you want (eg [UIColor clearColor] etc);

Answer 5

改为改变ContentView背景颜色，它将起作用。

Answer 6

just write this line

[cell setBackgroundColor:[UIColor clearColor]];

in your function before return statement

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

Because in iOS7 documentation clearly says that default color of each table cell is white. So, if you want to change it then you have to change it from your code. Remember to set the background property to clear color of your tableview from Utilities > Attributes inspector (on your right side).

hope it helps... as it worked for me...!