- (void)addDottedLineFromImageView:(UIView *)bView {
bView.layer.cornerRadius = 4;
CAShapeLayer*borderLayer = [[CAShapeLayeralloc]init];
borderLayer.bounds= bView.bounds;
borderLayer.position=CGPointMake(bView.centerX, bView.centerY);
borderLayer.path = [UIBezierPath bezierPathWithRoundedRect:CGRectMake(0,0, 68, 68) cornerRadius:4].CGPath;
borderLayer.lineWidth=1;
//虚线边框---小边框的长度
borderLayer.lineDashPattern = @[@6,@4]; //前边是虚线的长度，后边是虚线之间空隙的长度
borderLayer.lineDashPhase=0.1;
borderLayer.fillColor=UIColor.clearColor.CGColor;
borderLayer.strokeColor=BSHexColor(0xA6A8AB).CGColor;
[bView.layeraddSublayer:borderLayer];
}
