iOS开发——检测屏幕旋转

步骤一、注册通知

   1:  [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(statusBarOrientationChange:) name:UIApplicationDidChangeStatusBarOrientationNotification object:nil];

.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, "Courier New", courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0em; }
.csharpcode .rem { color: #008000; }
.csharpcode .kwrd { color: #0000ff; }
.csharpcode .str { color: #006080; }
.csharpcode .op { color: #0000c0; }
.csharpcode .preproc { color: #cc6633; }
.csharpcode .asp { background-color: #ffff00; }
.csharpcode .html { color: #800000; }
.csharpcode .attr { color: #ff0000; }
.csharpcode .alt
{
background-color: #f4f4f4;
width: 100%;
margin: 0em;
}
.csharpcode .lnum { color: #606060; }

 

步骤二、判断方向

 

   1:  - (void)statusBarOrientationChange:(NSNotification *)notification

   2:   

   3:  {

   4:   

   5:  UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];

   6:   

   7:  if (orientation == UIInterfaceOrientationLandscapeRight) // home键靠右

   8:   

   9:  {

  10:   

  11:  //

  12:   

  13:  }

  14:   

  15:  if (

  16:   

  17:  orientation ==UIInterfaceOrientationLandscapeLeft) // home键靠左

  18:   

  19:  {

  20:   

  21:  //

  22:   

  23:  }

  24:   

  25:  if (orientation == UIInterfaceOrientationPortrait)

  26:   

  27:  {

  28:   

  29:  //

  30:   

  31:  }

  32:   

.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, "Courier New", courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0em; }
.csharpcode .rem { color: #008000; }
.csharpcode .kwrd { color: #0000ff; }
.csharpcode .str { color: #006080; }
.csharpcode .op { color: #0000c0; }
.csharpcode .preproc { color: #cc6633; }
.csharpcode .asp { background-color: #ffff00; }
.csharpcode .html { color: #800000; }
.csharpcode .attr { color: #ff0000; }
.csharpcode .alt
{
background-color: #f4f4f4;
width: 100%;
margin: 0em;
}
.csharpcode .lnum { color: #606060; }

参考来源：http://www.2cto.com/kf/201410/345818.html