Merge multiple images into one image in iPhone

Question

I want to merge multiple images which are of different size & at different points. I want to merge them all and save it in one copy(image). so how can i mearge images into one image?

Accepted Answer

I found the solution which is so simple

you can merge multiple images by creating following method

```
- (BOOL) mergedImageOnMainImage:(UIImage *)mainImg WithImageArray:(NSArray *)imgArray AndImagePointArray:(NSArray *)imgPointArray
{
    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];

UIGraphicsBeginImageContext(mainImg.size);

[mainImg drawInRect:CGRectMake(0, 0, mainImg.size.width, mainImg.size.height)];
    int i = 0;
    for (UIImage *img in imgArray) {
        [img drawInRect:CGRectMake([[imgPointArray objectAtIndex:i] floatValue],
                                   [[imgPointArray objectAtIndex:i+1] floatValue],
                                   img.size.width,
                                   img.size.height)];

i+=2;
    }

CGImageRef NewMergeImg = CGImageCreateWithImageInRect(UIGraphicsGetImageFromCurrentImageContext().CGImage,
                                                          CGRectMake(0, 0, mainImg.size.width, mainImg.size.height));

UIGraphicsEndImageContext();
    [pool release];

if (NewMergeImg == nil) {
        return NO;
    }
    else {
        UIImageWriteToSavedPhotosAlbum([UIImage imageWithCGImage:NewMergeImg], self, nil, nil);
        return YES;
    }
}
```

now call this method in follwing way

```
NSArray *imgArray = [[NSArray alloc] initWithObjects:
                         [UIImage imageNamed:@"image06.png"],
                         [UIImage imageNamed:@"image07.png"],
                         [UIImage imageNamed:@"image08.png"],
                         [UIImage imageNamed:@"image09.png"],
                         [UIImage imageNamed:@"BackBtn.png"],
                         [UIImage imageNamed:@"Facebook.png"], nil];

NSArray *imgPointArray = [[NSArray alloc] initWithObjects:
                          @"10", @"10",
                          @"10", @"25",
                          @"30", @"15",
                          @"30", @"50",
                          @"20", @"80",
                          @"25", @"100", nil];

BOOL suc = [self mergedImageOnMainImage:[UIImage imageNamed:@"img001.png"] WithImageArray:imgArray AndImagePointArray:imgPointArray];

if (suc == YES) {
    NSLog(@"Images Successfully Mearged & Saved to Album");
}
else {
    NSLog(@"Images not Mearged & not Saved to Album");
}
```

Merge multiple images into one image in iPhone

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