I have a map application in which there is a button named video. If a user clicks on the video button he can record video at any location he like and simultaneously play the video.
How can I do this? My code is as follows:
-(IBAction)video:(id)sender { UIImagePickerController *picker = [[UIImagePickerController alloc] init]; picker.delegate = self; NSArray *sourceTypes = [UIImagePickerController availableMediaTypesForSourceType:picker.sourceType]; if (![sourceTypes containsObject:(NSString *)kUTTypeMovie ]){ NSLog(#"device not supported"); return; } picker.sourceType = UIImagePickerControllerSourceTypeCamera; picker.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeVideo]; picker.videoQuality = UIImagePickerControllerQualityTypeHigh; [self presentModalViewController:picker animated:YES]; }
From Apple Programming guides
Starting in iPhone OS 3.0, you can
record video, with included audio, on
supported devices. To display the
video recording interface, create and
push a UIImagePickerController object,
just as for displaying the
still-camera interface.
To record video, you must first check that the camera source type
(UIImagePickerControllerSourceTypeCamera)
is available and that the movie media
type (kUTTypeMovie) is available for
the camera. Depending on the media
types you assign to the mediaTypes
property, the picker can directly
display the still camera or the video
camera, or a selection interface that
lets the user choose.
Using the UIImagePickerControllerDelegate
protocol, register as a delegate of
the image picker. Your delegate object
receives a completed video recording
by way of the
imagePickerController:didFinishPickingMediaWithInfo:
method.
On supported devices, you can also pick previously-recorded videos from a
user’s photo library.
For more information on using the image picker class, see
UIImagePickerController Class
Reference. For information on trimming
recorded videos, see
UIVideoEditorController Class
Reference and
UIVideoEditorControllerDelegate
Protocol Reference.
Once you have the video in your UIImagePickerController delegate you can then save it to your app's documents directory using standard file operations.
Related
I implemented code for taking picture using AVCaptureSession. And i have button to pick image from Gallery. So, i need to use UIImagePickerController for picking image from gallery.
Is it possible to use UIImagepicker for picking Gallery and AVCaptureSession for taking picture. If i use this inside same app, appstore reject app or not?
Sure. You want to create your UIImagePickerController with a sourceType of UIImagePickerControllerSourceTypePhotoLibrary:
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
picker.delegate = self;
[self presentViewController:picker animated:YES completion:nil];
I can't imagine that Apple would reject you for doing this in the same app that you're using AVCaptureSession - they're providing these classes to do exactly what you're proposing, after all.
I was using UIImagePickerController to select the video files from Image Gallery of IPhone using
imagePicker.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeMovie];
and that code is working fine and picker shows me all available videos in Gallery but the problem is that UIImagePickerController do not shows all videos of IPhone like videos on Video folder of Iphone and also the synched videos on IPhone. In short it only shows video recorded from Iphone only. But my requirement is to show all videos in Iphone and getting their path so that I can write them using FileManager.
I also tried using
MPMediaPickerController *picker =
[[MPMediaPickerController alloc] initWithMediaTypes: MPMediaTypeAnyAudio];
picker.delegate = self;
picker.allowsPickingMultipleItems = YES;
picker.prompt = NSLocalizedString (#"AddSongsPrompt", #"Prompt to user to choose some songs to play");
[[UIApplication sharedApplication] setStatusBarStyle: UIStatusBarStyleDefault animated:YES];
[self presentModalViewController: picker animated: YES];
[picker release];
But it also shows me music files of Iphone not video.
Please some one has any idea how to do this?
try initWithMediaTypes:MPMediaTypeAnyVideo instead of initWithMediaTypes: MPMediaTypeAnyAudio
also see this link for more information, MPMediaItem_ClassReference
Is it a known issue that if you try to test your UIImagePickerController using the Camera as a source type then the simulator will crash?
I have the following code:
self.imgPicker = [[UIImagePickerController alloc] init];
self.imgPicker.allowsEditing = NO;
self.imgPicker.delegate = self;
[self.imgPicker setSourceType:UIImagePickerControllerSourceTypeCamera];
[self presentModalViewController:self.imgPicker animated:YES];
[imgPicker release];
Running this in simulator, I get an objc-exception-throw error on the stack # -[UIImagePickerController setSourceType:].
Now if I set the source type to the Photo Library though, everything runs smoothly and fine? What's the deal?
Simulator doesn't have the camera and can't simulate to take a picture (it would have been nice to use the isight but Apple has not been so kindly). However Your code is not safe because, for example, old ipod touch doesn't have a camera and in this case your app will crash on this device.
As Apple suggest in UIImagePickerController documentation:
To use an image picker controller
containing its default controls,
perform these steps:
1.Verify that the device is capable of picking content from the
desired source. Do this calling the
isSourceTypeAvailable: class method,
providing a constant from the
“UIImagePickerControllerSourceType”
enum.
2.Check which media types are available, for the source type you’re
using, by calling the
availableMediaTypesForSourceType:
class method. This lets you
distinguish between a camera that can
be used for video recording and one
that can be used only for still
images.
3.Tell the image picker controller to adjust the UI according to the
media types you want to make
available—still images, movies, or
both—by setting the mediaTypes
property.
4.Present the user interface by calling the
presentModalViewController:animated:
method of the currently active view
controller, passing your configured
image picker controller as the new
view controller.
5.When the user taps a button to pick a newly-captured or saved image
or movie, or cancels the operation,
dismiss the image picker using your
delegate object. For newly-captured
media, your delegate can then save it
to the Camera Roll on the device. For
previously-saved media, your delegate
can then use the image data according
to the purpose of your app.
So you have to call isSourceTypeAvailable and set your sourceType consistently.
I'm using UIImagePickerController to allow my user to select a video from the asset library.
When the UIImagePickerController is initially displayed, it shows thumbnails for the various movies that have been recorded.
Once the user selects a movie, it displays a "preview" view which allows them to playback and potentially edit the selected movie.
Is there any way to avoid displaying this view and instead return the movie that was selected on the thumbnail screen?
Here is the code I'm using:
UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
imagePicker.delegate = self;
imagePicker.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeMovie];
imagePicker.allowsEditing = NO;
[self presentModalViewController:imagePicker animated:YES];
I haven't tested this myself, though I'll be attempting this in my own application shortly. If you take a look at the UIImagePickerController showsCameraControls documentation, it alludes to the fact that if you eliminate the camera controls you can take as many photos as you want.
So theoretically if you set showsCameraControls to NO, and assign your own cameraOverlayView UIView to let the user take a photo, you can dismiss the image picker without the preview view from showing.
Perhaps that helps. You could listen with the NSNotificationCenter on #"_UIImagePickerControllerUserDidCaptureItem". If the user select the item, you could dismiss the imagePicker and do your thumbnail stuff.
I had a similar issue, to remove an overlay on the preview view and could solve it with this approach.
I am writing a simple video uploader application on iPhone 3GS where I first direct the user to photos album, and then select the video to share or upload. I am using the UIImagePickerController in the following way:
videoPickerCtrl = [[UIImagePickerController alloc] init]; videoPickerCtrl.delegate = self; videoPickerCtrl.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; videoPickerCtrl.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:videoPickerCtrl.sourceType];
videoPickerCtrl.allowsImageEditing = NO; videoPickerCtrl.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeMovie]; [window addSubview:videoPickerCtrl.view];
But I can see that once the controller is invoked, there is a disturbing video trimming interface that is presented. Once I press "choose", the video is always trimmed no matter whether I touch the trimming controls or not. Is there any way to get around this trimming interface and directly get the path of the video file ?
You don't specify what version of the iPhone SDK that you're using.
If you're using SDK 3.0, there's no way that I'm aware of to eliminate the trimming interface.
If you're using SDK 3.1, try setting UIImagePickerController.allowsEditing to false. In 3.1 the allowsImageEditing has been deprecated for a more general allowsEditing property.
The trimming you see is the iphone copying the video file into your apps tmp directory allowing you to access it. Look up iphone app sandboxing if you still don't get it.