Machine questions: Map positioning, taking pictures, displaying, recording videos, playing, and recording questions

Machine questions: Map positioning, taking pictures, displaying, recording videos, playing, and recording questions

During the two-day interview, a company first obtained an exam and then went to the next step: map location, take a photo and display a photo, record a video, and play a video.

First, go to my:

　　

 

1. Key code for map positioning (after ios8 is enabled, you must set the description in the project file ):

// 1. Add the map view CGRect rect = [UIScreen mainScreen]. bounds; _ mapView = [[MKMapView alloc] initWithFrame: CGRectMake (0, 50, rect. size. width, rect. size. height-50)]; [self. view addSubview: _ mapView]; // sets proxy _ mapView. delegate = self; // 2. Request to locate the service _ locationManager = [[CLLocationManager alloc] init]; if (! [CLLocationManager locationServicesEnabled] | [CLLocationManager authorizationStatus]! = Map) {[_ locationManager requestWhenInUseAuthorization];} // 3. User location track_mapview. userTrackingMode = MKUserTrackingModeFollow; // 4. Set map type _ mapView. mapType = MKMapTypeStandard;View Code

 

2. Key code for photographing and recording videos:

# Import "ViewController. h "# import <MobileCoreServices/MobileCoreServices. h> # import <MediaPlayer/MediaPlayer. h> @ interface ViewController () <strong, UIImagePickerControllerDelegate> @ property (weak, nonatomic) IBOutlet UIImageView * imgView; // display the photo @ property (strong, nonatomic) UIImagePickerController * picker; @ property (assign, nonatomic) BOOL isChange; // whether to switch between the camera and recorded video @ property (Assign, nonatomic) NSInteger currentTag; // current tag @ property (nonatomic, strong) MPMoviePlayerController * moviePlayer; // video playback controller @ property (nonatomic, strong) NSURL * movieUrl; // video recording path @ property (nonatomic, strong) UIView * movieView; // player View @ end @ implementation ViewController-(void) viewDidLoad {[super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib .} // initialize picke R-(UIImagePickerController *) picker {if (_ isChange | _ picker = nil) {_ picker = [[UIImagePickerController alloc] init]; _ picker. sourceType = UIImagePickerControllerSourceTypeCamera; // set the source of image picker _ picker. cameraDevice = UIImagePickerControllerCameraDeviceRear; // you can specify the camera to use. Set this parameter to the rear camera if (self. currentTag = 1) {// record video _ picker. mediaTypes = @ [(NSString *) kUTTypeMovie]; _ picker. videoQuality = UIIm AgePickerControllerQualityTypeIFrame1280x720; _ picker. cameraCaptureMode = UIImagePickerControllerCameraCaptureModeVideo; // sets the Camera mode (photograph, recording video) // NSLog (@ "recording video");} else {// _ picker. cameraCaptureMode = UIImagePickerControllerCameraCaptureModePhoto; // remove the video player control if (self. moviePlayer! = Nil) {[self. movieView removeFromSuperview]; self. moviePlayer = nil; }}_ picker. allowsEditing = YES; // You can edit _ picker. delegate = self; // sets proxy, detection operation} return _ picker;} // video player-(MPMoviePlayerController *) moviePlayer {if (! _ MoviePlayer) {_ moviePlayer = [MPMoviePlayerController new]; _ moviePlayer. view. frame = self. imgView. frame; _ moviePlayer. view. autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight; self. movieView = _ moviePlayer. view; [self. view addSubview: self. movieView];} _ moviePlayer. contentURL = self. movieUrl; return _ moviePlayer;} // photograph and video recording: tag = 0 indicates taking a photo, and = 1 indicates recording a video-(IBAction) openVid Eo :( UIButton *) sender {if (self. currentTag! = Sender. tag) self. isChange = YES; self. currentTag = sender. tag; [self presentViewController: self. picker animated: YES completion: nil] ;}# pragma mark-proxy method-(void) imagePickerController :( UIImagePickerController *) picker didFinishPickingMediaWithInfo :( NSDictionary *) info {NSString * mediaType = [info objectForKey: UIImagePickerControllerMediaType]; if ([mediaType isEqualToString :( NSString *) kUTTypeImage]) {// UIImage * image when taking a photo; // if editing is allowed, the edited image is obtained; otherwise, the original image is obtained if (self. picker. allowsEditing) {image = [info objectForKey: Photo]; // get the edited photo} else {image = [info objectForKey: UIImagePickerControllerOriginalImage]; // obtain the original photo} [self. imgView setImage: image]; // display photo // UIImageWriteToSavedPhotosAlbum (image, nil); // Save the photo to the album} else if ([mediaType is1_tostring :( NSString *) kUTTypeMovie]) {// when the video is being recorded, NSURL * url = [info objectForKey: UIImagePickerControllerMediaURL]; // The video path NSString * urlStr = [url path]; //// Save the video to the album // if (UIVideoAtPathIsCompatibleWithSavedPhotosAlbum (urlStr) {// UISaveVideoAtPathToSavedPhotosAlbum (urlStr, self, nil, nil ); // Save the video to the album //} self. movieUrl = [NSURL fileURLWithPath: urlStr]; [self. moviePlayer play];} // close the photo selector [self dismissViewControllerAnimated: YES completion: nil];}View Code

 

Download DEMO:

Github address: https://github.com/xiaotanit/Tan_LocationPhotoVideo

 

Link: http://www.cnblogs.com/tandaxia/p/5507154.html