MBProgressHUD-Determinated Mode重绘代码.

最新推荐文章于 2017-06-13 09:45:45 发布

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最新推荐文章于 2017-06-13 09:45:45 发布

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分类专栏： objective-c

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- (void)drawRect:(CGRect)rect
{
    CGContextRef context = UIGraphicsGetCurrentContext();
    CGFloat lineWidth = 2.f;
    CGRect allRect = self.bounds;
    CGRect circleRect = CGRectInset(allRect, lineWidth/2.f, lineWidth/2.f);
    CGPoint center = CGPointMake(CGRectGetMidX(self.bounds), CGRectGetMidY(self.bounds));
    [[UIColor yellowColor] setStroke];
//    [[UIColor redColor] setFill];
    CGContextSetLineWidth(context, lineWidth);

    CGContextStrokeEllipseInRect(context, circleRect);
    // 90 degrees
    CGFloat startAngle = - ((float)M_PI / 2.f);

    UIBezierPath *processPath = [UIBezierPath bezierPath];
    processPath.lineCapStyle = kCGLineCapButt;
    processPath.lineWidth = lineWidth * 2.f;
    CGFloat radius = (CGRectGetWidth(self.bounds) / 2.f) - (processPath.lineWidth / 2.f);
    CGFloat endAngle = (0.01 * 2.f * (float)M_PI) + startAngle;
    [processPath addArcWithCenter:center radius:radius startAngle:startAngle endAngle:endAngle clockwise:YES];
    // Ensure that we don't get color overlaping when _progressTintColor alpha < 1.f.
    CGContextSetBlendMode(context, kCGBlendModeCopy);
    [[UIColor redColor] set];
    [processPath stroke];
}