ios – 不兼容的指针类型将类型为’float [2]’的可保留参数传递

CGContextSetLineDash(line,lengths,1);  //画虚线

我该如何解决这个问题？

- (id)initDashLineWithFrame:(CGRect)frame{
    UIImageView *imageView1 = [[UIImageView alloc]initWithFrame:frame];

    UIGraphicsBeginImageContext(imageView1.frame.size);   //开始画线
    [imageView1.image drawInRect:CGRectMake(0,imageView1.frame.size.width,imageView1.frame.size.height)];
    CGContextSetLineCap(UIGraphicsGetCurrentContext(),kCGLineCapRound);  //设置线条终点形状


    float lengths[] = {4,5};
    CGContextRef line = UIGraphicsGetCurrentContext();
    UIColor *coloreline = [UIColor colorWithRed:156/255.0 green:156/255.0 blue:156/255.0 alpha:1];//r(156,156,1);
    CGContextSetStrokeColorWithColor(line,coloreline.CGColor);

    CGContextSetLineDash(line,1);  //画虚线
    CGContextMoveToPoint(line,0.0,5.0);    //开始画线
    CGContextAddLineToPoint(line,310.0,5.0);
    CGContextStrokePath(line);

    imageView1.image = UIGraphicsGetImageFromCurrentImageContext();
    return imageView1;
}