奇妙なエラーが発生しました。アプリで画像をカメラロールに保存したいと思います。
しかし、少量のデバイスでメッセージの保存中にエラーが発生します。
編集：エラーログ
「保存した写真の画像をエンコードできませんでした。」UserInfo = 0x3e7170 {NSUnderlyingError = 0x389310 "保存された写真の画像のエンコードに失敗しました。"、NSLocalizedDescription=保存された写真の画像のエンコードに失敗しました。
May 22 14:13:34 unknown assetsd[281] <Error>: ImageIO: CGImageDestinationAddImage image parameter is nil
May 22 14:13:34 unknown assetsd[281] <Error>: ImageIO: CGImageDestinationFinalize image destination does not have enough images
May 22 14:13:34 unknown assetsd[281] <Error>: CGContextTranslateCTM: invalid context 0x0
May 22 14:13:34 unknown assetsd[281] <Error>: CGContextScaleCTM: invalid context 0x0
May 22 14:13:34 unknown assetsd[281] <Error>: CGContextSetBaseCTM: invalid context 0x0
May 22 14:13:34 unknown assetsd[281] <Error>: CGContextSaveGState: invalid context 0x0
May 22 14:13:34 unknown assetsd[281] <Error>: CGContextSetInterpolationQuality: invalid context 0x0
May 22 14:13:34 unknown assetsd[281] <Error>: CGContextTranslateCTM: invalid context 0x0
May 22 14:13:34 unknown assetsd[281] <Error>: CGContextScaleCTM: invalid context 0x0
May 22 14:13:34 unknown assetsd[281] <Error>: CGContextSetFillColorWithColor: invalid context 0x0
May 22 14:13:34 unknown assetsd[281] <Error>: CGContextFillRects: invalid context 0x0
May 22 14:13:34 unknown assetsd[281] <Error>: CGContextTranslateCTM: invalid context 0x0
May 22 14:13:34 unknown assetsd[281] <Error>: CGContextScaleCTM: invalid context 0x0
May 22 14:13:34 unknown com.apple.assetsd[281] <Notice>: May 22 14:13:34 SLQ-iTouch assetsd[281] <Error>: CGContextTranslateCTM: invalid context 0x0
May 22 14:13:34 unknown com.apple.assetsd[281] <Notice>: May 22 14:13:34 SLQ-iTouch assetsd[281] <Error>: CGContextScaleCTM: invalid context 0x0
May 22 14:13:34 unknown com.apple.assetsd[281] <Notice>: May 22 14:13:34 SLQ-iTouch assetsd[281] <Error>: CGContextSetBaseCTM: invalid context 0x0
May 22 14:13:34 unknown com.apple.assetsd[281] <Notice>: May 22 14:13:34 SLQ-iTouch assetsd[281] <Error>: CGContextSaveGState: invalid context 0x0
May 22 14:13:34 unknown com.apple.assetsd[281] <Notice>: May 22 14:13:34 SLQ-iTouch assetsd[281] <Error>: CGContextSetInterpolationQuality: invalid context 0x0
May 22 14:13:34 unknown com.apple.assetsd[281] <Notice>: May 22 14:13:34 SLQ-iTouch assetsd[281] <Error>: CGContextTranslateCTM: invalid context 0x0
May 22 14:13:34 unknown com.apple.assetsd[281] <Notice>: May 22 14:13:34 SLQ-iTouch assetsd[281] <Error>: CGContextScaleCTM: invalid context 0x0
May 22 14:13:34 unknown com.apple.assetsd[281] <Notice>: May 22 14:13:34 SLQ-iTouch assetsd[281] <Error>: CGContextSetFillColorWithColor: invalid context 0x0
May 22 14:13:34 unknown com.apple.assetsd[281] <Notice>: May 22 14:13:34 SLQ-iTouch assetsd[281] <Error>: CGContextFillRects: invalid context 0x0
May 22 14:13:34 unknown com.apple.assetsd[281] <Notice>: May 22 14:13:34 SLQ-iTouch assetsd[281] <Error>: CGContextTranslateCTM: invalid context 0x0
May 22 14:13:34 unknown com.apple.assetsd[281] <Notice>: May 22 14:13:34 SLQ-iTouch assetsd[281] <Error>: CGContextScaleCTM: invalid context 0x0
May 22 14:13:34 unknown assetsd[281] <Error>: CGContextTranslateCTM: invalid context 0x0
May 22 14:13:34 unknown assetsd[281] <Error>: CGContextTranslateCTM: invalid context 0x0
May 22 14:13:34 unknown assetsd[281] <Error>: CGContextTranslateCTM: invalid context 0x0
May 22 14:13:34 unknown assetsd[281] <Error>: CGContextConcatCTM: invalid context 0x0
May 22 14:13:34 unknown assetsd[281] <Error>: CGContextTranslateCTM: invalid context 0x0
May 22 14:13:34 unknown assetsd[281] <Error>: CGContextDrawImage: invalid context 0x0
May 22 14:13:34 unknown com.apple.assetsd[281] <Notice>: May 22 14:13:34 SLQ-iTouch assetsd[281] <Error>: CGContextTranslateCTM: invalid context 0x0
May 22 14:13:34 unknown com.apple.assetsd[281] <Notice>: May 22 14:13:34 SLQ-iTouch assetsd[281] <Error>: CGContextTranslateCTM: invalid context 0x0
May 22 14:13:34 unknown com.apple.assetsd[281] <Notice>: May 22 14:13:34 SLQ-iTouch assetsd[281] <Error>: CGContextTranslateCTM: invalid context 0x0
May 22 14:13:34 unknown com.apple.assetsd[281] <Notice>: May 22 14:13:34 SLQ-iTouch assetsd[281] <Error>: CGContextConcatCTM: invalid context 0x0
May 22 14:13:34 unknown com.apple.assetsd[281] <Notice>: May 22 14:13:34 SLQ-iTouch assetsd[281] <Error>: CGContextTranslateCTM: invalid context 0x0
May 22 14:13:34 unknown com.apple.assetsd[281] <Notice>: May 22 14:13:34 SLQ-iTouch assetsd[281] <Error>: CGContextDrawImage: invalid context 0x0
May 22 14:13:34 unknown assetsd[281] <Error>: CGContextRestoreGState: invalid context 0x0
May 22 14:13:34 unknown assetsd[281] <Error>: CGBitmapContextCreateImage: invalid context 0x0
May 22 14:13:34 unknown com.apple.assetsd[281] <Notice>: May 22 14:13:34 SLQ-iTouch assetsd[281] <Error>: CGContextRestoreGState: invalid context 0x0
May 22 14:13:34 unknown com.apple.assetsd[281] <Notice>: May 22 14:13:34 SLQ-iTouch assetsd[281] <Error>: CGBitmapContextCreateImage: invalid context 0x0
>
以下は、画像を保存するために使用される私のコードです。
- (IBAction)saveImage:(id)sender {
HUD = [MBProgressHUD showHUDAddedTo:self.view animated:YES];
HUD.dimBackground = YES;
HUD.labelText = @"Its saving!";
self.imageOverlay.alpha = 1;
self.savedImage = [self maskImage:self.imgView withMask:self.baseImgView];
UIImageWriteToSavedPhotosAlbum(self.savedImage, self, @selector(imageSavedToPhotosAlbum: didFinishSavingWithError: contextInfo:), nil);
}
- (void)imageSavedToPhotosAlbum:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo {
NSString *message;
NSString *title;
if (!error) {
title = NSLocalizedString(@"Save Success", @"");
message = NSLocalizedString(@"Save Success Message", @"");
HUD.customView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"Checkmark.png"]];
HUD.mode = MBProgressHUDModeCustomView;
HUD.labelText = @"We’re saved - WooHoo!!";
[HUD hide:YES afterDelay:1.5];
saved =1;
self.imageOverlay.alpha =0.85;
[self performSelector:@selector(saveSuccess) withObject:nil afterDelay:1.5];
} else
{
title = NSLocalizedString(@"Save Failed", @"");
message = [error description];
HUD.customView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"sad_face.png"]];
HUD.mode = MBProgressHUDModeCustomView;
HUD.labelText = @"Error! Try saving photo again :p";
[HUD hide:YES afterDelay:3];
}
}
- (UIImage*) maskImage:(UIImageView *)maskImage withMask:(UIImageView *)cropImage
{
UIImage *image = nil;
UIImage *imagePNG = nil;
CGSize newImageSize = CGSizeMake(cropImage.frame.size.width, cropImage.frame.size.height);
UIGraphicsBeginImageContextWithOptions(newImageSize, NO, 0.0); //retina res
[self.viewForImg.layer renderInContext:UIGraphicsGetCurrentContext()];
image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
NSData *imgData = UIImagePNGRepresentation ( image ); // get PNG representation
imagePNG = [UIImage imageWithData:imgData]; // wrap UIImage around PNG representation
return imagePNG;
}