知识点
2018-08-05 本文已影响10人
BeethOven
- 利用UIBezierPath和CAShapeLayer生成任意位置圆角
设置view左上和右上圆角半径为20
UIView *view = [[UIView alloc]initWithFrame:CGRectMake(100, 200, 200, 200)];
view.backgroundColor = [UIColor redColor];
UIBezierPath *bezierPath = [UIBezierPath bezierPathWithRoundedRect:view.bounds byRoundingCorners:UIRectCornerTopLeft | UIRectCornerTopRight cornerRadii:CGSizeMake(10, 10)];
CAShapeLayer *maskLayer = [[CAShapeLayer alloc]init];
maskLayer.frame = view.bounds;
maskLayer.path = bezierPath.CGPath;
view.layer.mask = maskLayer;
[self.view addSubview:view];
2.label大小固定 内容根据大小自适应字体
//初始值 为10,设置minimumScaleFactor=0.5,就代表最小字体为5。adjustsFontSizeToFitWidth属性默认是NO,需要设置YES。
UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(10, 0, 150, 15)];
label = @"label大小固定 内容根据大小自适应字体";
label = [UIFont systemFontOfSize:10];
label = YES;
label =0.5;