小编hak*_*imo的帖子

我想知道如何将2 uiimage合并为1？我想将最终产品保存到库中.为了保存图像,我正在使用UI按钮.这是我如何保存UIImageview.image的片段.

-(IBAction)getPhoto:(id)sender  {

UIImage* imageToSave = imageOverlay.image;

UIImageWriteToSavedPhotosAlbum(imageToSave, nil, nil, nil);
}

我在网上看了一下UIGraphicsBeginImageContext.找到了一个例子,但我无法理解如何将它实际应用到我的.这是我到目前为止所得到的.

- (UIImage*)addImage:(UIImage *)image secondImage:(UIImage *)image2 
{
UIGraphicsBeginImageContext(image.size);
[image drawInRect:CGRectMake(0,0,image.size.width,image.size.height)];
[image2 drawInRect:CGRectMake(10,10,image2.size.width,image2.size.height) blendMode:kCGBlendModeNormal alpha:1.0];
UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

return newImage;
}

现在我有2个UIImageviews,它们是imageOverlay.image和imageView.image.如果我使用上面的方法如何将返回值分配给UIImageWriteToSavedPhotoAlbum？希望有人能指出我正确的方向.

非常感谢.

我目前正在制作一个iPhone应用程序,用户拍摄照片或从相册中选择它,然后在图像上放置一个叠加层.然后,用户可以缩放,旋转和保存图像.目前,我可以拍照,或者为相册选择一张.至于叠加层,我只使用了UIImageView并将它放在Interface builder中的层次结构之上.对于相机,我正在使用此代码:

-(IBAction)getPhoto:(id)sender  {

// Create an image picker controller
UIImagePickerController * imagePicker = [[UIImagePickerController alloc] init];


if((UIButton *) sender == choosePhotoBtn)   {
    // Set source to photo albums
    imagePicker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
}

else    {
    // Set source to camera
    imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
    imagePicker.showsCameraControls = YES;
}

// Delegate is self
imagePicker.delegate = self;

    // Allow editing of image
    imagePicker.allowsEditing = YES;

    // Show image picker
    [self presentModalViewController:imagePicker animated: YES];
}

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info   {
// Dismiss modalviewcontroller
[picker …