// 重新绘制cell边框

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath{

if ([cell respondsToSelector:@selector(tintColor)]) {

CGFloat cornerRadius = 10.f;

cell.backgroundColor = UIColor.clearColor;

CAShapeLayer *layer = [[CAShapeLayer alloc] init];

CGMutablePathRef pathRef = CGPathCreateMutable();

CGRect bounds = CGRectInset(cell.bounds, 10, 0);

if (indexPath.row == 0 && indexPath.row == [tableView numberOfRowsInSection:indexPath.section]-1) {

CGPathAddRoundedRect(pathRef, nil, bounds, cornerRadius, cornerRadius);

} else if (indexPath.row == 0) {

CGPathMoveToPoint(pathRef, nil, CGRectGetMinX(bounds), CGRectGetMaxY(bounds));

CGPathAddArcToPoint(pathRef, nil, CGRectGetMinX(bounds), CGRectGetMinY(bounds), CGRectGetMidX(bounds), CGRectGetMinY(bounds), cornerRadius);

CGPathAddArcToPoint(pathRef, nil, CGRectGetMaxX(bounds), CGRectGetMinY(bounds), CGRectGetMaxX(bounds), CGRectGetMidY(bounds), cornerRadius);

CGPathAddLineToPoint(pathRef, nil, CGRectGetMaxX(bounds), CGRectGetMaxY(bounds));

CGPathAddLineToPoint(pathRef, nil, CGRectGetMinX(bounds), CGRectGetMaxY(bounds));

} else if (indexPath.row == [tableView numberOfRowsInSection:indexPath.section]-1) {

CGPathMoveToPoint(pathRef, nil, CGRectGetMinX(bounds), CGRectGetMinY(bounds));

CGPathAddArcToPoint(pathRef, nil, CGRectGetMinX(bounds), CGRectGetMaxY(bounds), CGRectGetMidX(bounds), CGRectGetMaxY(bounds), cornerRadius);

CGPathAddArcToPoint(pathRef, nil, CGRectGetMaxX(bounds), CGRectGetMaxY(bounds), CGRectGetMaxX(bounds), CGRectGetMidY(bounds), cornerRadius);

CGPathAddLineToPoint(pathRef, nil, CGRectGetMaxX(bounds), CGRectGetMinY(bounds));

} else {

CGPathMoveToPoint(pathRef, nil, CGRectGetMinX(bounds), CGRectGetMinY(bounds));

CGPathAddLineToPoint(pathRef, nil, CGRectGetMinX(bounds), CGRectGetMaxY(bounds));

CGPathAddLineToPoint(pathRef, nil, CGRectGetMaxX(bounds), CGRectGetMaxY(bounds));

CGPathAddLineToPoint(pathRef, nil, CGRectGetMaxX(bounds), CGRectGetMinY(bounds));

}

layer.path = pathRef;

CFRelease(pathRef);

//颜色修改

layer.fillColor = [UIColor whiteColor].CGColor;

layer.strokeColor=[UIColor colorWithHexString:@"#939393"].CGColor;

UIView *testView = [[UIView alloc] initWithFrame:bounds];

[testView.layer insertSublayer:layer atIndex:0];

testView.backgroundColor = UIColor.clearColor;

cell.backgroundView = testView;

cell.selectionStyle=UITableViewCellSelectionStyleNone;

}

[self tableView:tableView willDisplayCell:cell readDataIndexPath:indexPath];

}

网上有很多一样的，但有一个缺陷是cell与cell之间的线画的不一样。导致美观性变差，已修改。