iphone - 如何在不使用设置 alpha 的情况下合并 2 个图像？

Question

我是 iPhone 的新手开发人员。

我想合并两个图像并在 UIImageView 中仅获取一张图像而不设置 alpha。

这是我的代码。该代码正在使用 alpha 运行， 但我想要设置不设置 alpha。

我的代码:-

-(UIImage *)maskingImage:(UIImage *)image
{

    CGSize sizeR = CGSizeMake(200, 220);
   // UIImage *textureImage = [UIImage imageNamed:@"tt.png"];
    UIImage *textureImage =imgView2.image;



    UIGraphicsBeginImageContextWithOptions(sizeR, YES, textureImage.scale);
    [textureImage drawInRect:CGRectMake(0.0, 0.0, 200, 220)];

    UIImage *bottomImage = UIGraphicsGetImageFromCurrentImageContext();

    UIImage *upperImage = image;


    CGSize newSize = sizeR ;
    UIGraphicsBeginImageContext(newSize);
    [bottomImage drawInRect:CGRectMake(0.0, 0.0, 200, 220)];
    [upperImage drawInRect:CGRectMake(0.0, 0.0, 200, 220) blendMode:kCGBlendModeNormal alpha:0.5];



    UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return newImage; 
}

提前致谢。

Answer 1

UIGraphicsBeginImageContext(YOUR SIZE);

//FIRST IMAGE
[FIRST_IMAGE drawInRect:CGRectMake(0, 0, YOUR_SIZE_WIDTH/2, YOUR_SIZE_HEIGHT)];
//SECOND IMAGE
[SECOND_IMAGE drawInRect:CGRectMake(YOUR_SIZE_WIDTH/2, 0, YOUR_SIZE_WIDTH/2, YOUR_SIZE_HEIGHT)];
UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();