title: Size of Image on UINavigationBar
body: <p>I want to put Custom image on my UINavigationBar,</p>
  
  <p>When i tried this two code snippets,</p>
  
  <pre><code>[self.navigationItem setTitleView:[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"logo.png"]]];
  </code></pre>
  
  <p><strong>And</strong></p>
  
  <pre><code>    UIButton *logoView = [[UIButton alloc] initWithFrame:CGRectMake(0,0,70,30)];
      [logoView setBackgroundImage:[UIImage imageNamed:@"logo.png"] forState:UIControlStateNormal];
      [logoView setUserInteractionEnabled:NO];
      self.navigationItem.titleView = logoView;
  </code></pre>
  
  <p>image which i can see on my Device is getting blur or it is getting streched.</p>
  
  <p>I made image with Resolution of <code>180*40</code>(Width*Height)</p>
  
  <p>I want to know the exact size of Image. what, it would be ?</p>
  
  <p><strong>Thanks in advance.</strong></p>