图标没有在Uitab栏中显示

Question

图标未显示在Uitab栏中，而是显示了一些矩形。有什么问题？

我的代码：

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
   self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
  if (self) {
    self.tabBarItem.image = [UIImage imageNamed:@"poolmate.png"];
}
return self;
}

Answer 1

您从未初始化tabBarItem。尝试以下操作：

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        self.tabBarItem = [self tabBarItem];
        self.tabBarItem.image = [UIImage imageNamed:@"poolmate.png"];
    }
    return self;
}