IOS上如何画出1像素的线

#define SINGLE_LINE_WIDTH (1/[UIScreen mainScreen].scale)

#define SINGLE_LINE_ADJUST_OFFSET ((1/[UIScreen mainScreen].scale)/2)

- (void)viewDidLoad {

[super
viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

CGFloat xPos =
100;

UIView *view = [[UIView
alloc] initWithFrame:CGRectMake(xPos -
SINGLE_LINE_ADJUST_OFFSET, 35,
SINGLE_LINE_WIDTH, 330)];

view.backgroundColor = [UIColor
blackColor];

[self.view
addSubview:view];

}

版权声明：本文为博主原创文章，未经博主允许不得转载。