我正在使用ELCAlbumPickerController，我可以选择多个图像并上传，但另外我想获取文件的文件名和数据类型。我怎么能这样做？
我可以选择图像或视频，如何一次选择图像和视频以及任何文件？
请在下面找到我的代码供您参考。
- (void)viewDidLoad {
UIImage *anImage = [UIImage imageNamed:@"elc-ios-icon.png"];
NSArray *Items = [NSArray arrayWithObjects:
@"A text line",
anImage, nil];
UIActivityViewController *ActivityView =
[[UIActivityViewController alloc]
initWithActivityItems:Items applicationActivities:nil];
[self presentViewController:ActivityView animated:YES completion:nil];
}
- (IBAction)launchController
{
ELCAlbumPickerController *albumController = [[ELCAlbumPickerController alloc] initWithNibName: nil bundle: nil];
ELCImagePickerController *elcPicker = [[ELCImagePickerController alloc] initWithRootViewController:albumController];
[albumController setParent:elcPicker];
[elcPicker setDelegate:self];
ELCImagePickerDemoAppDelegate *app = (ELCImagePickerDemoAppDelegate *)[[UIApplication sharedApplication] delegate];
if ([app.viewController respondsToSelector:@selector(presentViewController:animated:completion:)]){
[app.viewController presentViewController:elcPicker animated:YES completion:nil];
} else {
[app.viewController presentModalViewController:elcPicker animated:YES];
}
[elcPicker release];
[albumController release];
}
- (IBAction)launchSpecialController
{
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
self.specialLibrary = library;
[library release];
NSMutableArray *groups = [NSMutableArray array];
[_specialLibrary enumerateGroupsWithTypes:ALAssetsGroupSavedPhotos usingBlock:^(ALAssetsGroup *group, BOOL *stop) {
if (group) {
[groups addObject:group];
} else {
// this is the end
[self displayPickerForGroup:[groups objectAtIndex:0]];
}
} failureBlock:^(NSError *error) {
self.chosenImages = nil;
UIAlertView * alert = [[UIAlertView alloc] initWithTitle:@"Error" message:[NSString stringWithFormat:@"Album Error: %@ - %@", [error localizedDescription], [error localizedRecoverySuggestion]] delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil];
[alert show];
[alert release];
NSLog(@"A problem occured %@", [error description]);
// an error here means that the asset groups were inaccessable.`
// Maybe the user or system preferences refused access.
}];
}
- (void)displayPickerForGroup:(ALAssetsGroup *)group
{
ELCAssetTablePicker *tablePicker = [[ELCAssetTablePicker alloc] initWithNibName: nil bundle: nil];
tablePicker.singleSelection = YES;
tablePicker.immediateReturn = YES;
ELCImagePickerController *elcPicker = [[ELCImagePickerController alloc] initWithRootViewController:tablePicker];
elcPicker.delegate = self;
tablePicker.parent = elcPicker;
// Move me
tablePicker.assetGroup = group;
[tablePicker.assetGroup setAssetsFilter:[ALAssetsFilter allAssets]];
if ([self respondsToSelector:@selector(presentViewController:animated:completion:)]){
[self presentViewController:elcPicker animated:YES completion:nil];
} else {
[self presentModalViewController:elcPicker animated:YES];
}
[tablePicker release];
[elcPicker release];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation
{
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
return YES;
} else {
return toInterfaceOrientation != UIInterfaceOrientationPortraitUpsideDown;
}
}
#pragma mark ELCImagePickerControllerDelegate Methods
- (void)elcImagePickerController:(ELCImagePickerController *)picker didFinishPickingMediaWithInfo:(NSArray *)info
{
if ([self respondsToSelector:@selector(dismissViewControllerAnimated:completion:)]){
[self dismissViewControllerAnimated:YES completion:nil];
} else {
[self dismissModalViewControllerAnimated:YES];
}
for (UIView *v in [_scrollView subviews]) {
[v removeFromSuperview];
}
CGRect workingFrame = _scrollView.frame;
workingFrame.origin.x = 0;
images = [NSMutableArray arrayWithCapacity:[info count]];
for(NSDictionary *dict in info) {
UIImage *image = [dict objectForKey:UIImagePickerControllerOriginalImage];
[images addObject:image];
UIImageView *imageview = [[UIImageView alloc] initWithImage:image];
[imageview setContentMode:UIViewContentModeScaleAspectFit];
imageview.frame = workingFrame;
[_scrollView addSubview:imageview];
[imageview release];
workingFrame.origin.x = workingFrame.origin.x + workingFrame.size.width;
}
self.chosenImages = images;
NSLog(@"Images:%@",images);
[_scrollView setPagingEnabled:YES];
[_scrollView setContentSize:CGSizeMake(workingFrame.origin.x, workingFrame.size.height)];
for (int i=0; i< images.count; i++) {
NSData *image = UIImageJPEGRepresentation(images[i], 0.1);
NSLog(@"NSDATA:%@",image);
NSMutableString *urlString = [[NSMutableString alloc] initWithFormat:@"name=thefile&&filename=recording"];
[urlString appendFormat:@"%@", image];
NSLog(@"urlstring:%@",urlString);
NSData *postData = [urlString dataUsingEncoding:NSASCIIStringEncoding
allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];
NSString * namecount=[NSString stringWithFormat:@"fn%i.png",i];
NSString * baseurl =[[NSString alloc]initWithFormat:@"http://199.198.12.555/serviceService.svc/serviceupload?fileName=%@",namecount];
NSURL *url = [NSURL URLWithString:baseurl];
NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:url];
[urlRequest setHTTPMethod: @"POST"];
[urlRequest setValue:postLength forHTTPHeaderField:@"Content-Length"];
[urlRequest setValue:@"application/x-www-form-urlencoded"
forHTTPHeaderField:@"Content-Type"];
[urlRequest setHTTPBody:image];
NSURLConnection *connection = [NSURLConnection connectionWithRequest:urlRequest delegate:self];
[connection start];
}
NSLog(@"%@",images[0]);
NSLog(@"%lu",(unsigned long)images.count);
}
-(IBAction)upload:(id)sender{
}
- (void)elcImagePickerControllerDidCancel:(ELCImagePickerController *)picker
{
if ([self respondsToSelector:@selector(dismissViewControllerAnimated:completion:)]){
[self dismissViewControllerAnimated:YES completion:nil];
} else {
[self dismissModalViewControllerAnimated:YES];
}
}
- (void)didReceiveMemoryWarning
{
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
- (void)viewDidUnload
{
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)dealloc
{
[_specialLibrary release];
[_scrollView release];
[super dealloc];
}
@end
@implementation APActivityProvider
- (id) activityViewController:(UIActivityViewController *)activityViewController
itemForActivityType:(NSString *)activityType
{
if ( [activityType isEqualToString:UIActivityTypePostToTwitter] )
return @"This is a #twitter post!";
if ( [activityType isEqualToString:UIActivityTypePostToFacebook] )
return @"This is a facebook post!";
if ( [activityType isEqualToString:UIActivityTypeMessage] )
return @"SMS message text";
if ( [activityType isEqualToString:UIActivityTypeMail] )
return @"Email text here!";
if ( [activityType isEqualToString:@"it.albertopasca.myApp"] )
return @"OpenMyapp custom text";
return nil;
}
- (id) activityViewControllerPlaceholderItem:(UIActivityViewController *)activityViewController { return @""; }
@end
@implementation APActivityIcon
- (NSString *)activityType { return @"it.albertopasca.myApp"; }
- (NSString *)activityTitle { return @"Open Maps"; }
- (UIImage *) activityImage { return [UIImage imageNamed:@"elc-ios-icon.png"]; }
- (BOOL) canPerformWithActivityItems:(NSArray *)activityItems { return YES; }
- (void) prepareWithActivityItems:(NSArray *)activityItems { }
- (UIViewController *) activityViewController { return nil; }
- (void) performActivity {
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"maps://"]];
}
@end
由于
答案 0 :(得分：0)
您可以使用提供“名称”的密钥UIImagePickerControllerReferenceURL获取资产网址，但这可能不会非常有用，因为它可能是一个UUID。 UIImagePickerControllerMediaType键包含类型。