crea un UIImage de dos UIImageView

Question

Tengo dos UIImageView en UIView. Cada UIImageView tiene un UIImage. Ahora quiero crear un UIImage de dos UIImageView.

Por favor, dé la sugerencia de cómo puedo hacer esto.

Answer 1

Si dispone de un punto de vista con tres UIImageViews y crear puntos de venta correspondientes

IBOutlet UIImageView *imageView1; 
IBOutlet UIImageView *imageView2; 
IBOutlet UIImageView *imageView3; 

Usted puede hacer algo como lo siguiente para combinar imageViews 1 y 2 en imageView 3

UIGraphicsBeginImageContext(imageView1.image.size); 

CGRect rect = CGRectMake(0, 0, imageView1.image.size.width, imageView1.image.size.height); 

[imageView1.image drawInRect:rect]; 
[imageView2.image drawInRect:rect blendMode:kCGBlendModeScreen alpha:0.5]; 

UIImage *resultingImage = UIGraphicsGetImageFromCurrentImageContext(); 
UIGraphicsEndImageContext(); 

[imageView3 setImage:resultingImage]; 

CGBlendMode le permite elija entre cualquiera de las siguientes operaciones de composición para sus imágenes:

enum CGBlendMode { 
    kCGBlendModeNormal, 
    kCGBlendModeMultiply, 
    kCGBlendModeScreen, 
    kCGBlendModeOverlay, 
    kCGBlendModeDarken, 
    kCGBlendModeLighten, 
    kCGBlendModeColorDodge, 
    kCGBlendModeColorBurn, 
    kCGBlendModeSoftLight, 
    kCGBlendModeHardLight, 
    kCGBlendModeDifference, 
    kCGBlendModeExclusion, 
    kCGBlendModeHue, 
    kCGBlendModeSaturation, 
    kCGBlendModeColor, 
    kCGBlendModeLuminosity, 
    kCGBlendModeClear, 
    kCGBlendModeCopy, 
    kCGBlendModeSourceIn, 
    kCGBlendModeSourceOut, 
    kCGBlendModeSourceAtop, 
    kCGBlendModeDestinationOver, 
    kCGBlendModeDestinationIn, 
    kCGBlendModeDestinationOut, 
    kCGBlendModeDestinationAtop, 
    kCGBlendModeXOR, 
    kCGBlendModePlusDarker, 
    kCGBlendModePlusLighter 
};