180，改变IOS系统的方法

1，改变状态栏的状态

-(UIStatusBarStyle)preferredStatusBarStyle{

returnUIStatusBarStyleLightContent;

}

2，隐藏状态栏

-(BOOL)prefersStatusBarHidden{

return
YES;

}

3，屏幕尺寸，分辨率，状态条

//app尺寸，去掉状态栏

CGRect appRect = [UIScreen
mainScreen].applicationFrame;

//屏幕尺寸,分辨率

CGRect screenRect = [UIScreen
mainScreen].bounds;

//状态栏

CGRect statusRect = [[UIApplication
sharedApplication]statusBarFrame];