ios三张图片组合一张

- (UIImage *)addImage:(UIImage *)image1 toImage:(UIImage *)image2 {

UIGraphicsBeginImageContext(image1.size);

// Draw image1

[image1 drawInRect:CGRectMake(0, 0, 40, 40)];

// Draw image2

[image2 drawInRect:CGRectMake(40, 0, 40, 40)];

// Draw image2

[image2 drawInRect:CGRectMake(00, 40, 80, 40)];

UIImage *resultingImage = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();

return resultingImage;

}