title: Why and how is this transparent portion shown as opaque in iPhone App?
body: <p>Please check below image.</p>
  
  <p><img src="https://i.stack.imgur.com/QSBTw.png" alt="enter image description here"></p>
  
  <p>If you see, below the black outline of the blue speech bubble, there is a skybluish portion shown.
  I am using a transparent png for the blue speech bubble. So, not sure from where this skyblue portion comes.</p>
  
  <p>Please is the transparent PNG of the speech bubble that I use.</p>
  
  <p><img src="https://i.stack.imgur.com/ic2Hg.png" alt="enter image description here"> </p>
  
  <p>What is wrong here?</p>
  
  <pre><code> UIView* popoverView1;
   UIViewController* popoverContent;
      UIImageView *imagebackground;
  @property (nonatomic,retain) IBOutlet UIPopoverController *pc;
  
  popoverContent = [[UIViewController alloc]init];
          popoverView1 = [[UIView alloc]initWithFrame:CGRectMake(56,0,393,444)];
         // popoverView1.backgroundColor = [UIColor whiteColor];
          imagebackground = [[UIImageView alloc]initWithFrame:CGRectMake(0,0,393,444)];
          [imagebackground setImage:[UIImage imageNamed:@"card-creation-screen15.png"]];
          [popoverView1 addSubview:btndone];
          [popoverView1 addSubview:btn];
          popoverContent.view = popoverView1;
          [btndone setHidden:YES];
  
          [popoverView1 addSubview:imagebackground];
          [popoverView1 bringSubviewToFront:btn];
          [popoverView1 bringSubviewToFront:btndone];
  
  
          popoverController.backgroundColor = [UIColor clearColor];
          popoverView1.backgroundColor = [UIColor clearColor];
          popoverContent.contentSizeForViewInPopover = CGSizeMake(393, 444);
          pc = [[UIPopoverController alloc]                                                 initWithContentViewController:popoverContent];
          [pc presentPopoverFromRect:CGRectMake(20,650,131,131) inView:self.view                                  permittedArrowDirections:UIPopoverArrowDirectionDown
                            animated:YES];
          pc.backgroundColor = [UIColor clearColor];
  
   popoverController.backgroundColor = [UIColor clearColor];
      popoverView1.backgroundColor = [UIColor clearColor];
      pc.backgroundColor = [UIColor clearColor];
  </code></pre>