iOS多张图片合成一张
本文来源于http://www.cnblogs.com/yang-guang-girl/p/5197099.html,感谢博主
- 代码
#import "RootViewController.h"
@interface RootViewController ()
@end
@implementation RootViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
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];
NSArray *imgPointArray = [[NSArray alloc] initWithObjects:
@"10", @"10",
@"10", @"25",
@"30", @"15",
@"30", @"50",
@"20", @"80",
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;
}
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
- 自己的代码没有贴上,来个效果图吧