适配横竖屏的两种方式

1. [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(statusBarOrientationChange:) name:UIApplicationDidChangeStatusBarOrientationNotification object:nil];   
   
    - (void)statusBarOrientationChange:(NSNotification *)notification
   {
   
     UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
   
    if (orientation == UIDeviceOrientationPortrait || orientation == UIDeviceOrientationPortraitUpsideDown) {
    //翻转为竖屏时
      [self constrainsForPortrait];
      [self drawKline];
      [self drawLine];
      [self drawMA5];
      [self.tableView reloadData];
      }
     if (orientation==UIDeviceOrientationLandscapeLeft || orientation == UIDeviceOrientationLandscapeRight) {
        
        [self constrsinsForLandscape];
        [self drawKline];
        [self drawLine];
        [self drawMA5];
        [self.tableView reloadData];
        //考虑在里面重绘
      }
    }
   

2.    - (NSInteger)needDrawKlineCount
    {
        CGFloat width = 0;
      UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
     if (orientation == UIDeviceOrientationPortrait || orientation == UIDeviceOrientationPortraitUpsideDown) {
    
        width = SCREEN_WIDTH-50;
    
      }else{
        width = SCREEN_HEIGHT - 50;
    }
      _needDrawKlineCount = ceil(width/self.rowHeight);
      return _needDrawKlineCount;
    }