1.导航状态尺寸

// 状态栏(statusbar)    CGRect rectStatus = [[UIApplication sharedApplication] statusBarFrame];    // 导航栏（navigationbar）    CGRect rectNav = self.navigationController.navigationBar.frame;    NSLog(@"状态栏:%f---%f",rectStatus.size.width,rectStatus.size.height);    NSLog(@"导航栏:%f---%f",rectNav.size.width,rectNav.size.height);