xcode Objective c - ios：如何从相机胶卷中选择视频？
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Objective c - ios : How to pick video from Camera Roll?
提问by user3566863
I try this :
我试试这个：
UIImagePickerController *videoPicker = [[UIImagePickerController alloc] init];
videoPicker.delegate = self;
videoPicker.modalPresentationStyle = UIModalPresentationCurrentContext;
videoPicker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
videoPicker.mediaTypes = @[(NSString*)kUTTypeMovie, (NSString*)kUTTypeAVIMovie, (NSString*)kUTTypeVideo, (NSString*)kUTTypeMPEG4];
videoPicker.videoQuality = UIImagePickerControllerQualityTypeHigh;
[self presentViewController:videoPicker animated:YES completion:nil];
but it only show videos from photos part not all video in camera roll. I want to pick all video from Camera roll. Please help me by giving some clue or code. Thanks in advance!
但它只显示照片中的视频，而不是相机胶卷中的所有视频。我想从相机胶卷中选择所有视频。请提供一些线索或代码来帮助我。提前致谢！
回答by Praxiteles
Here is a compilation and cleanup of the answer above plus a few more details.
这是上述答案的汇编和清理以及更多详细信息。
(0) Ensure you have these two includes.
(0) 确保你有这两个包含。
#import <UIKit/UIKit.h>
#import <MobileCoreServices/MobileCoreServices.h> // needed for video types
(1) Add two delegates to your .h file: UINavigationControllerDelegate and UIImagePickerControllerDelegate. For us, it looked like this:
(1) 在.h 文件中添加两个委托：UINavigationControllerDelegate 和 UIImagePickerControllerDelegate。对我们来说，它看起来像这样：
@interface ATHViewController () <UITabBarDelegate, UINavigationControllerDelegate,UIImagePickerControllerDelegate>
(2) Present the user with choice of videos from their library. Add this code to your .m file somewhere.
(2) 向用户展示从他们的库中选择的视频。将此代码添加到您的 .m 文件中的某处。
// Present videos from which to choose
UIImagePickerController *videoPicker = [[UIImagePickerController alloc] init];
videoPicker.delegate = self; // ensure you set the delegate so when a video is chosen the right method can be called
videoPicker.modalPresentationStyle = UIModalPresentationCurrentContext;
// This code ensures only videos are shown to the end user
videoPicker.mediaTypes = @[(NSString*)kUTTypeMovie, (NSString*)kUTTypeAVIMovie, (NSString*)kUTTypeVideo, (NSString*)kUTTypeMPEG4];
videoPicker.videoQuality = UIImagePickerControllerQualityTypeHigh;
[self presentViewController:videoPicker animated:YES completion:nil];
(3) Handle the responses from the picker. Add this code to your delegate class.
(3) 处理来自picker的响应。将此代码添加到您的委托类。
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
// This is the NSURL of the video object
NSURL *videoURL = [info objectForKey:UIImagePickerControllerMediaURL];
NSLog(@"VideoURL = %@", videoURL);
[picker dismissViewControllerAnimated:YES completion:NULL];
}
(4) Handle when the user cancels choosing anything.
(4) 用户取消选择时的处理。
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
[picker dismissViewControllerAnimated:YES completion:NULL];
}
回答by Vinodh
Please use the following code to select video from iOS gallery
请使用以下代码从iOS图库中选择视频
UIImagePickerController *videoPicker = [[UIImagePickerController alloc] init];
videoPicker.delegate = self;
videoPicker.modalPresentationStyle = UIModalPresentationCurrentContext;
videoPicker.mediaTypes =[UIImagePickerController availableMediaTypesForSourceType:UIImagePickerControllerSourceTypePhotoLibrary];??
videoPicker.mediaTypes = @[(NSString*)kUTTypeMovie, (NSString*)kUTTypeAVIMovie, (NSString*)kUTTypeVideo, (NSString*)kUTTypeMPEG4];
videoPicker.videoQuality = UIImagePickerControllerQualityTypeHigh;
[self presentViewController:videoPicker animated:YES completion:nil];
Please have a look at this link Select video from gallery
请查看此链接从图库中选择视频
