多张照片合成1张

代码：

- (void)viewDidLoad {  [super viewDidLoad];  // Do any additional setup after loading the view, typically from a nib.    NSArray *imgArray = [[NSArray alloc] initWithObjects:             [UIImage imageNamed:@"1.jpg"],             [UIImage imageNamed:@"2.jpg"],             [UIImage imageNamed:@"3.jpg"],             [UIImage imageNamed:@"4.jpg"],             [UIImage imageNamed:@"5.jpg"],             nil];        //imgPointArray中的数据为图片在合成后的图片后的x,y坐标。  NSArray *imgPointArray = [[NSArray alloc] initWithObjects:               @"10", @"10",               @"20", @"20",               @"30", @"30",               @"40", @"40",               @"50", @"50",               nil];      BOOL suc = [self mergedImageOnMainImage:[UIImage imageNamed:@"1.jpg"] WithImageArray:imgArray AndImagePointArray:imgPointArray];    if (suc == YES) {    NSLog(@"Images Successfully Mearged & Saved to Album");  }  else {    NSLog(@"Images not Mearged & not Saved to Album");  }}#pragma -mark -functions//多张图片合成一张- (BOOL) mergedImageOnMainImage:(UIImage *)mainImg WithImageArray:(NSArray *)imgArray AndImagePointArray:(NSArray *)imgPointArray{    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();  if (NewMergeImg == nil) {    return NO;  }  else {    UIImageWriteToSavedPhotosAlbum([UIImage imageWithCGImage:NewMergeImg], self, nil, nil);    return YES;  }}

原标题：多张照片合成1张

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