从2个UIImages和标签创建UIImage

Question

我有一个大的UIImage.在此UIImage我还有一个,女巫实际上是一个面具.还有一个 - 我克服UILabel了这个面具!巫婆是图片的文字.

我想将所有这些部分合二为一UIImage,将其保存到相机胶卷中!

我该怎么办？

UPD.我该怎么加UITextView？

我发现:

[[myTextView layer] renderInContext:UIGraphicsGetCurrentContext()];

但是这种方法并没有将myTextView放在正确的位置.

Answer 1

创建两个UIImage对象和一个UILabel对象然后使用drawInRect:方法

//create image 1

UIImage *img1 = [UIImage imageNamed:@"image1.png"];

//create image 2    

UIImage *img2 = [UIImage imageNamed:@"image2.png"];

// create label

UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 50,50 )];

//set you label text

[label setText:@"Hello"];

// use UIGraphicsBeginImageContext() to draw them on top of each other

//start drawing
UIGraphicsBeginImageContext(img1.size);

//draw image1

[img1 drawInRect:CGRectMake(0, 0, img1.size.width, img1.size.height)];

//draw image2

[img2 drawInRect:CGRectMake((img1.size.width - img2.size.width) /2, (img1.size.height- img2.size.height)/2, img2.size.width, img2.size.height)];

//draw label

[label drawTextInRect:CGRectMake((img1.size.width - label.frame.size.width)/2, (img1.size.height - label.frame.size.height)/2, label.frame.size.width, label.frame.size.height)];

//get the final image

UIImage *resultImage  = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();

该resultImage是UIImage包含了所有的图片和标签作为一个图像.之后,您可以将它保存在任何您想要的地方.

希望帮助......