屏幕尺寸 CGRect screen = [UIscreen mainScreen].bounds
状态栏尺寸 CGRect rect = [[UIApplication sharedApplication] statusBarFrame];
app尺寸 CGRect r = [UIScreen mainScreen].applicationFrame;
屏幕尺寸 CGRect screen = [UIscreen mainScreen].bounds
状态栏尺寸 CGRect rect = [[UIApplication sharedApplication] statusBarFrame];
app尺寸 CGRect r = [UIScreen mainScreen].applicationFrame;