ios) Objective-c 如何在分组表中添加背景图片

Question

Hello I have a trouble customizing a background of the grouped table view.. Here's the code I used

UIView *backgroundView = [[UIView alloc] initWithFrame: window.frame];
backgroundView.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"TableViewBackground.png"]];
[window addSubview:backgroundView];
[backgroundView release];

yourTableViewController = [[ATableViewController alloc] initWithStyle:UITableViewStyleGrouped];
yourTableViewController.view.backgroundColor = [UIColor clearColor];
[window addSubview:yourTableViewController.view];

[window makeKeyAndVisible];

Thank you:)

+added)

I modified the codes but still not working.. These codes are in delegate.m, didFinishLaunchingWithOptions method

tableViewController = [[UITableViewController alloc] initWithStyle:UITableViewStyleGrouped];

UIView *backgroundView = [[UIView alloc] initWithFrame: window.frame];
backgroundView.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"TableViewBackground.png"]];

tableViewController.tableView.backgroundView = backgroundView;
[window addSubview:backgroundView];
[backgroundView release];

tableViewController = [[UITableViewController alloc] initWithStyle:UITableViewStyleGrouped];
tableViewController.tableView.backgroundColor = [UIColor clearColor];
[window addSubview:tableViewController.tableView];

[window makeKeyAndVisible];

and in delegate.h tableviewcontroller is declared.. not sure about this part tho..

@interface BetaVersionAppDelegate : NSObject <UIApplicationDelegate> {

UIWindow *window;
UINavigationController *navigationController;
UIViewController *viewController;
UITableViewController *tableViewController;

}
@property (nonatomic, retain) IBOutlet UIWindow *window;
@property (nonatomic, retain) IBOutlet UINavigationController *navigationController;
@property (nonatomic, retain) IBOutlet UITableViewController *tableViewController;

Thanx:)

Answer 1

You should set the backgroundView property of your table:

yourTableViewController = [[ATableViewController alloc] initWithStyle:UITableViewStyleGrouped];

UIView *backgroundView = [[UIView alloc] initWithFrame: window.frame];
backgroundView.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"TableViewBackground.png"]];


yourTableViewController.tableView.backgroundView = backgroundView;
[backgroundView release];
[window addSubview:yourTableViewController.view];

Answer 2

Try changing the UITableView property backgroundView instead of just view .

Answer 3

Try this

put this code in - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView

delegate method

[tableView setBackgroundColor:[UIColor clearColor]];
[tableView setBackgroundView:[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"TableViewBackground.png"]]];

Put this on -viewWillAppear method so you can extend your tableView.