如何为iOS7 3.5英寸和4英寸屏幕的UITableview设置背景图像

Question

I am working on ios application for iOS6 & iOS7 3.5 inches and 4-inches screen.I have some problem, when I set the background image for UITableview .In iOS 6 4-inches and 3.5 inches screen the tableview background image displayed.There is no problem for displaying.But my iOS7 3.5 & 4-inches the tableview background image not displaying.That is my problem.This is my code.

if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"7.0"))
{     
    weeklyTableview=[[UITableView alloc]initWithFrame:CGRectMake(0, 60, 320, 480)];       
    weeklyTableview.dataSource=self;    
    weeklyTableview.delegate=self;      
    weeklyTableview.scrollEnabled=YES;

    [self.view addSubview:weeklyTableview];

    weeklyTableview.separatorStyle=UITableViewCellSeparatorStyleSingleLine;
    weeklyTableview.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleBottomMargin;

    tableBackgroundImage=[[UIImageView alloc]initWithImage:[UIImage imageNamed:@"dash-bord-bg-small.PNG"]];
    tableBackgroundImage.frame=weeklyTableview.frame;

    [weeklyTableview setBackgroundView:tableBackgroundImage];              
}
else
{

    weeklyTableview=[[UITableView alloc]initWithFrame:CGRectMake(0, 60, 320, 480)];
    weeklyTableview.dataSource=self;        
    weeklyTableview.delegate=self;        
    weeklyTableview.scrollEnabled=YES;

    [self.view addSubview:weeklyTableview];

    weeklyTableview.separatorStyle=UITableViewCellSeparatorStyleSingleLine;
    weeklyTableview.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleBottomMargin;

    tableBackgroundImage=[[UIImageView alloc]initWithImage:[UIImage imageNamed:@"dash-bord-bg-small.PNG"]];
    tableBackgroundImage.frame=weeklyTableview.frame;

    [weeklyTableview setBackgroundView:tableBackgroundImage];

}

Answer 1

Firstly , check if the file dash-bord-bg-small.PNG is present in the project bundle.

Secondly , please note that when playing with a UIImageView object, if you do -initWithImage: and specify an image of 64px by 64px, then the imageView frame set is equal to the dimension of the image.
Later, if you change the frame of this imageView object to, say, 320px by 320px, the image remains 64px by 64px while only the imageView object has become larger. ( Anyways... this isn't such a big issue for you at this moment )

Lastly ... note that the UITableViewCell in iOS6, by default, has a transparent background but in iOS7 it's background is white.

Try this and see if it helps:

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
    [cell.contentView setBackgroundColor:[UIColor clearColor]];
}

---

Optionally ... dump the if-else block since it's identical*

Answer 2

尝试这个

    [weeklyTableview setBackgroundColor:[UIColor colorWithPatternImage:[UIImage imageNamed:@"dash-bord-bg-small.PNG"]]];