ios|ios 按钮左面是半圆右面是直角 ios按钮左面是半圆右面是直角

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UIButton * maBtn = [[UIButton alloc] initWithFrame:CGRectMake(SCREEN_WIDTH - 110, (260*W-30)/2, 110, 30)]; maBtn.backgroundColor = BaseColor; [bg addSubview:maBtn]; //TODO:uiview 单边圆角或者单边框 UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:maBtn.bounds byRoundingCorners:(UIRectCornerTopLeft | UIRectCornerBottomLeft) cornerRadii:CGSizeMake(maBtn.frame.size.height/2,maBtn.frame.size.height/2)]; //圆角大小 CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init]; maskLayer.frame = maBtn.bounds; maskLayer.path = maskPath.CGPath; maBtn.layer.mask = maskLayer;