1.状态栏20px高度问题

if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7) 
{
        [application setStatusBarStyle:UIStatusBarStyleLightContent];
        self.window.clipsToBounds=YES;
        self.window.frame=  CGRectMake(0,20,self.window.frame.size.width,self.window.frame.size.height-20);
//added on 19th Sep        self.window.bounds = CGRectMake(0, 20, self.window.frame.size.width, ScreenHeight-20);
    }

工程Plist中设置：

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View controller-based status bar appearance = NO；

2.部分页面不能适配的，强制写回

[self.view setBounds:CGRectMake(0, -20, self.view.bounds.size.width, self.view.bounds.size.height)];

 3.

if (systemVersion >= 7.0)
{
      self.edgesForExtendedLayout = UIRectEdgeNone;
      self.extendedLayoutIncludesOpaqueBars= NO;
      self.modalPresentationCapturesStatusBarAppearance= NO;    
 }

4 搜索栏隐藏在状态后面

-(void)searchDisplayControllerWillBeginSearch:(UISearchDisplayController *)controller {
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0) {
        CGRect statusBarFrame=  [[UIApplication sharedApplication] statusBarFrame];
        [UIView animateWithDuration:0.25 animations:^{
for (UIView *subview in self.view.subviews)
                subview.transform= CGAffineTransformMakeTranslation(0, statusBarFrame.size.height);
        }];
    }
}

-(void)searchDisplayControllerWillEndSearch:(UISearchDisplayController *)controller {
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0) {
        [UIView animateWithDuration:0.25 animations:^{
for (UIView *subview in self.view.subviews)
                subview.transform= CGAffineTransformIdentity;
        }];
    }
}

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