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POHow to write to UIImage?
 

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  1. POHow to write to UIImage?
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    <p>This code is not working and i do not understand the mistake. Please help. </p> <pre><code> -(UIImage *)addText:(UIImage *)img text:(NSString *)text1 { int w = img.size.width; int h = img.size.height; //lon = h - lon; char* text = (char *)[text1 cStringUsingEncoding:NSASCIIStringEncoding]; CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB(); /*UIGraphicsBeginImageContext(self.view.bounds.size); [self.view.layer renderInContext:UIGraphicsGetCurrentContext()]; CGContextShowTextAtPoint(UIGraphicsGetCurrentContext(), 50, 100, text, strlen(text)); UIImage *viewImage =UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); NSLog(@"View Image : %@",viewImage);*/ CGContextRef context = CGBitmapContextCreate(NULL, w, h, 8, 4 * w, colorSpace, kCGImageAlphaPremultipliedFirst); CGContextDrawImage(context, CGRectMake(0, 0, w, h), img.CGImage); CGContextSetRGBFillColor(context, 0.0, 0.0, 1.0, 1); //char* text = (char *)[text1 cStringUsingEncoding:NSASCIIStringEncoding];// "05/05/09"; CGContextSelectFont(context, "Arial", 18, kCGEncodingMacRoman); CGContextSetTextDrawingMode(context, kCGTextFill); CGContextSetRGBFillColor(context, 255, 255, 255, 1); //rotate text CGContextShowTextAtPoint(context, 0, 50, text, strlen(text)); CGContextSetTextMatrix(context, CGAffineTransformMakeRotation( -M_PI/4 )); CGContextShowTextAtPoint(context, 50, 100, text, strlen(text)); //UIImage *compositeImage = UIGraphicsGetImageFromCurrentImageContext(); CGImageRef imageMasked = CGBitmapContextCreateImage(context); CGContextRelease(context); CGColorSpaceRelease(colorSpace); NSLog(@"Image : %@",[UIImage imageWithCGImage:imageMasked]); return [UIImage imageWithCGImage:imageMasked]; //return viewImage; } </code></pre>
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    1. USEkcenierK
    1. USAditya Athavale
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      1. USEino Gourdin
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    1. COI would suggest better formatting, simplification and better explanation of what it is supposed to do.
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      1. USBemmu
    2. COI think the code is self explanatory of what it is suppose to do.
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      1. USRobin
 

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