如何将照片库或相机中的图像添加到我的Ipad应用程序？

我想从照片库添加图像或使用相机添加到我的ipad应用程序。 我使用了与iphone相同的编码。 但是应用程序崩溃了。 我认为这不是从库添加图片到ipad应用程序的正确方法。 如果有人知道请帮助我。

-(void)ctnPhotoSelection { isMyCtView = YES; UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"" delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:@"Take Photo With Camera", @"Select Photo From Library", @"Cancel", nil]; actionSheet.actionSheetStyle = UIActionSheetStyleAutomatic; actionSheet.destructiveButtonIndex = 1; [actionSheet showInView:self.view]; [actionSheet release]; } - (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex { if (buttonIndex == 0) { [self TakePhotoWithCamera]; } else if (buttonIndex == 1) { [self SelectPhotoFromLibrary]; } else if (buttonIndex == 2) { NSLog(@"cancel"); } } -(void) TakePhotoWithCamera { [self startCameraPickerFromViewController:self usingDelegate:self]; } -(void) SelectPhotoFromLibrary { [self startLibraryPickerFromViewController:self usingDelegate:self]; } - (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker { [[picker parentViewController] dismissModalViewControllerAnimated:YES]; } - (BOOL)startCameraPickerFromViewController:(UIViewController*)controller usingDelegate:(id)delegateObject { if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) { UIImagePickerController *picker = [[UIImagePickerController alloc] init]; picker.sourceType = UIImagePickerControllerSourceTypeCamera; picker.allowsEditing = YES; picker.delegate = self; [controller presentModalViewController:picker animated:YES]; [picker release]; } return YES; } - (BOOL)startLibraryPickerFromViewController:(UIViewController*)controller usingDelegate:(id)delegateObject { if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) { UIImagePickerController *picker1 = [[UIImagePickerController alloc]init]; picker1.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; picker1.allowsEditing = YES; picker1.delegate = self; [controller presentModalViewController:picker1 animated:YES]; [picker1 release]; } return YES; } - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { UIImage * img = [info objectForKey:@"UIImagePickerControllerEditedImage"]; [self useImage:img]; [[picker parentViewController] dismissModalViewControllerAnimated:NO]; UINavigationController* navController = self.navigationController; UIViewController* controller = [navController.viewControllers objectAtIndex:0]; [controller dismissModalViewControllerAnimated:NO]; } -(void)useImage:(UIImage *)theImage { NSData *addImageData = UIImagePNGRepresentation(theImage); IpadAppDelegate *appDelegate=(IpadAppDelegate*)[ [UIApplication sharedApplication] delegate]; if(isMyCtView == YES) { isMyCtView = NO; appDelegate.imageCtData = addImageData; appDelegate.isctFromDevice = YES; appDelegate.isctnCntrl = YES; [self.view sendSubviewToBack:myCtnView]; } [self reloadView]; } 

崩溃日志

 Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'On iPad, UIImagePickerController must be presented via UIPopoverController' *** Call stack at first throw: ( 0 CoreFoundation 0x3587a987 __exceptionPreprocess + 114 1 libobjc.A.dylib 0x34a8249d objc_exception_throw + 24 2 UIKit 0x34378317 UIImagePickerEnsureViewIsInsidePopover + 258 3 PhotoLibrary 0x3499893b -[PLLibraryView didMoveToWindow] + 86 4 UIKit 0x341bf76b -[UIView(Internal) _didMoveFromWindow:toWindow:] + 698 5 UIKit 0x341bf583 -[UIView(Internal) _didMoveFromWindow:toWindow:] + 210 6 UIKit 0x341bf433 -[UIView(Hierarchy) _postMovedFromSuperview:] + 106 7 UIKit 0x341aa82f -[UIView(Internal) _addSubview:positioned:relativeTo:] + 678 8 UIKit 0x341aa57f -[UIView(Hierarchy) addSubview:] + 22 9 UIKit 0x341fc8a9 -[UINavigationTransitionView transition:fromView:toView:] + 416 10 UIKit 0x341fc6fd -[UINavigationTransitionView transition:toView:] + 20 11 UIKit 0x341ef8cf -[UINavigationController _startTransition:fromViewController:toViewController:] + 1274 12 UIKit 0x341ef35f -[UINavigationController _startDeferredTransitionIfNeeded] + 182 13 UIKit 0x341ef2a3 -[UINavigationController viewWillLayoutSubviews] + 14 14 UIKit 0x341ef23f -[UILayoutContainerView layoutSubviews] + 138 15 UIKit 0x341b80cf -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 26 16 CoreFoundation 0x35818bbf -[NSObject(NSObject) performSelector:withObject:] + 22 17 QuartzCore 0x31075685 -[CALayer layoutSublayers] + 120 18 QuartzCore 0x3107543d CALayerLayoutIfNeeded + 184 19 QuartzCore 0x3106f56d _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 212 20 QuartzCore 0x3106f383 _ZN2CA11Transaction6commitEv + 190 21 QuartzCore 0x31092f9d _ZN2CA11Transaction17observer_callbackEP19__CFRunLoopObservermPv + 52 22 CoreFoundation 0x3580ac59 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 16 23 CoreFoundation 0x3580aacd __CFRunLoopDoObservers + 412 24 CoreFoundation 0x358020cb __CFRunLoopRun + 854 25 CoreFoundation 0x35801c87 CFRunLoopRunSpecific + 230 26 CoreFoundation 0x35801b8f CFRunLoopRunInMode + 58 27 GraphicsServices 0x320c84ab GSEventRunModal + 114 28 GraphicsServices 0x320c8557 GSEventRun + 62 29 UIKit 0x341dc329 -[UIApplication _run] + 412 30 UIKit 0x341d9e93 UIApplicationMain + 670 31 IpadComicBuilder 0x00002537 main + 70 32 IpadComicBuilder 0x000024b8 start + 52 ) terminate called after throwing an instance of 'NSException' Program received signal: “SIGABRT”. warning: Unable to read symbols for /Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.2.1 (8C148)/Symbols/Developer/usr/lib/libXcodeDebuggerSupport.dylib (file not found). (gdb) 

Answer 1

答案在您的错误消息中。

 Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'On iPad, UIImagePickerController must be presented via UIPopoverController' 

在iPad上，您不能只使用iPhone方法选择图像。 你需要使用UIPopoverController ，你可以通过它传递你的UIImagePickerController：

UIPopoverController* popover = [[UIPopoverController alloc] initWithContentViewController: imagePicker];

然后在您的类中实现UIPopoverControllerDelegate协议。

你可以在这里找到一个例子。

Answer 2

 - (void)buttonTap { UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle: nil delegate: self cancelButtonTitle: @"Cancel" destructiveButtonTitle: nil otherButtonTitles: @"Take a new photo", @"Choose from existing", nil]; [actionSheet showInView:self.view]; } - (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex { int i = buttonIndex; switch(i) { case 0: { //Code for camera } break; case 1: { UIImagePickerController * picker = [[UIImagePickerController alloc] init]; picker.delegate = self; picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; self.popover = [[UIPopoverController alloc] initWithContentViewController: picker]; self.popover.delegate =self; [self.popover presentPopoverFromRect:self.view.bounds inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES]; } default: // Do Nothing......... break; } } - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { NSLog(@"Picker returned successfully."); UIImage *selectedImage; NSURL *mediaUrl; mediaUrl = (NSURL *)[info valueForKey:UIImagePickerControllerMediaURL]; if (mediaUrl == nil) { selectedImage = (UIImage *) [info valueForKey:UIImagePickerControllerEditedImage]; if (selectedImage == nil) { selectedImage= (UIImage *) [info valueForKey:UIImagePickerControllerOriginalImage]; NSLog(@"Original image picked."); } else { NSLog(@"Edited image picked."); } } [picker dismissModalViewControllerAnimated:YES]; [self.imageButton setImage:selectedImage forState:UIControlStateNormal]; } - (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker { [self dismissModalViewControllerAnimated:YES]; } 

Answer 3

对于Swift 4

从相机获取图像

 let picker = UIImagePickerController() picker.delegate = self picker.allowsEditing = true picker.sourceType = .camera self.present(picker, animated: true, completion: nil) 

从图书馆获取图像

 let picker = UIImagePickerController() picker.delegate = self picker.allowsEditing = true picker.sourceType = .photoLibrary self.present(picker, animated: true, completion: nil) 

委托function

 func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) { var result = false if let image = info[UIImagePickerControllerEditedImage] as? UIImage { //do something to image here ... picker.dismiss(animated: true, completion: nil) } } 

在你的视图控制器中，不要忘记inheritance类UIImagePickerControllerDelegate ， UINavigationControllerDelegate