title: How to implement this kind of blur effect iOS 8 & iOS 9?
body: <p><a href="https://i.stack.imgur.com/hHijG.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/hHijG.png" alt="enter image description here"></a></p>
  
  <p>As you can see ,the map view should display with blur effect. I tried the UIBlurEffect, stackoverflow suggestions  and many blur effect libraries but I not able achieve the actual effect.How can I achieve the exact blur effect , can anybody help me to fix it out ? Thanks,</p>
  
  <p>Edit:</p>
  
  <pre><code>[self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"blurImage" ] forBarMetrics:UIBarMetricsDefault];
  
  [self.navigationController.navigationBar setBackgroundColor:[UIColor colorWithRed:0.0f green:0.0f blue:0.0f alpha:0.0f]];
  
  [self.navigationController.navigationBar setShadowImage:[[UIImage alloc] init]];
  </code></pre>
  
  <p>While I implement the above code it looks like the below image,<a href="https://i.stack.imgur.com/7zwz7.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/7zwz7.png" alt="enter image description here"></a></p>
  
  <p>What I'm doing wrong?</p>