我想将图片保存到 iPhone 中的自定义文件夹中。我已经做了。
但我面临一个奇怪的问题，当我运行我的代码时，它工作正常。但是，当我从iPhone删除该自定义文件夹，然后再次运行我的代码时，不会创建自定义文件夹。
如果我在代码中更改自定义文件夹名称，则使用新名称创建它。但是，即使用户删除了该自定义文件夹，我也希望创建相同的文件夹名称。我不想创建另一个自定义文件夹。
我的代码：
@interface CameraVC ()
{
ALAssetsLibrary* library;
GPUImageStillCamera *videoCamera;
}
- (IBAction)clickPhotoBtn:(id)sender {
if (!isCameraPermissionAccessed) {
[self showAccessDeinedMessage :@"Camera permission denied" withMessage:@"To enable, please go to settings and allow camera permission for this app."];
return;
}
[videoCamera capturePhotoAsJPEGProcessedUpToFilter:filter withCompletionHandler:^(NSData *processedJPEG, NSError *error){
if (error!=nil)
{
[self showErrorMessage:@"Unable to capture image" ];
return ;
}
else {
UIImage *image = [UIImage imageWithData:processedJPEG];
CGFloat zoomReciprocal = 1.0f /currentScale;
CGPoint offset = CGPointMake(image.size.width * ((1.0f - zoomReciprocal) / 2.0f), image.size.height * ((1.0f - zoomReciprocal) / 2.0f));
CGRect croppedRect = CGRectMake(offset.x, offset.y, image.size.width * zoomReciprocal, image.size.height * zoomReciprocal);
CGImageRef croppedImageRef = CGImageCreateWithImageInRect([image CGImage], croppedRect);
UIImage *croppedImage = [[UIImage alloc] initWithCGImage:croppedImageRef scale:[image scale] orientation:[image imageOrientation]];
CGImageRelease(croppedImageRef);
if (filterType == GPUIMAGE_GRAYSCALE && !isPhotoBlackAndWhite) {
GPUImagePicture *stillImageSource = [[GPUImagePicture alloc] initWithImage:croppedImage];
GPUImageColorInvertFilter *stillImageFilter = [[GPUImageColorInvertFilter alloc] init];
[stillImageSource addTarget:stillImageFilter];
[stillImageFilter useNextFrameForImageCapture];
[stillImageSource processImage];
UIImage *currentFilteredVideoFrame = [stillImageFilter imageFromCurrentFramebuffer];
[self.library saveImage:currentFilteredVideoFrame toAlbum:@"myCustomFolder" withCompletionBlock:^(NSError *error) {
if (error!=nil) {
[self showErrorMessage:@"Unable to save image in photos album, please ensure this app must has permission access to photos album to save images."];
return ;
}
else {
NSString *message = @"Image saved";
UIAlertView *toast = [[UIAlertView alloc] initWithTitle:nil
message:message
delegate:nil
cancelButtonTitle:nil
otherButtonTitles:nil, nil];
[toast show];
int duration = 1;
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
[toast dismissWithClickedButtonIndex:0 animated:YES];
});
}
}];
}