iPhone相框應用

Question

我正在創建相框應用程序，我如何將照片和相框合並為一個png並將其保存到文件包或文檔文件夾中。

Answer 1

//UIGraphicsBeginImageContext(im1.frame.size);
UIGraphicsBeginImageContext(im2.frame.size);

[im1.image drawInRect:CGRectMake(0.0, 0.0, im2.frame.size.width, im2.frame.size.height)];
[backdrop.layer renderInContext:UIGraphicsGetCurrentContext()];
[im2.image drawInRect:CGRectMake(0.0, 0.0, im2.frame.size.width, im2.frame.size.height) blendMode:kCGBlendModeNormal alpha:1.0];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
//NSData *dataObj = UIImagePNGRepresentation(image);
//NSString *picturedata = [dataObj base64Encoding];
appDelegate.fbpost=image;

//appDelegate.image11=image;

[UIImagePNGRepresentation(image) writeToFile:[self findUniqueSavePath] atomically:YES];

// Set the background
//SETIMAGE(image);

// Show the current contents of the documents folder
CFShow([[NSFileManager defaultManager] directoryContentsAtPath:[NSHomeDirectory() stringByAppendingString:@"/Documents"]]);