CGContextSetFillColorWithColor:无效的上下文 0x0。这是一个严重的错误。此应用程序或它使用的库正在使用无效的上下文,从而导致系统稳定性和可靠性的整体下降。此通知是出于礼貌:请解决此问题。这将成为即将到来的更新中的致命错误。
我从这个方法的 [color setFill] 行得到错误。关于如何解决它的任何想法?
+ (UIImage *)fillImage:(UIImage*)image withColor:(UIColor *)color
{
// begin a new image context, to draw our colored image onto
UIGraphicsBeginImageContextWithOptions(image.size, NO, [[UIScreen mainScreen] scale]);
// get a reference to that context we created
CGContextRef context = UIGraphicsGetCurrentContext();
// set the fill color
[color setFill];
// translate/flip the graphics context (for transforming from CG* coords to UI* coords
CGContextTranslateCTM(context, 0, image.size.height);
CGContextScaleCTM(context, 1.0, -1.0);
// set the blend mode to overlay, and the original image
CGContextSetBlendMode(context, kCGBlendModeOverlay);
CGRect rect = CGRectMake(0, 0, image.size.width, image.size.height);
//if(overlay) CGContextDrawImage(context, rect, img.CGImage);
// set a mask that matches the shape of the image, then draw (overlay) a colored rectangle
CGContextClipToMask(context, rect, image.CGImage);
CGContextAddRect(context, rect);
CGContextDrawPath(context,kCGPathFill);
// generate a new UIImage from the graphics context we drew onto
UIImage *coloredImg = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
//return the color-burned image
return coloredImg;
}