这两天参加面试，有个公司先出了机试题，然后才能进入下一步，机试题大意是要求实现：地图定位、拍照并显示照片、录制视频并且播放视频三个小功能。

先上我的效果图：

　　

1、地图定位关键代码(ios8后，开启地图定位需要在工程文件里面设置描述)：

//1、添加地图视图CGRect rect =[UIScreen mainScreen].bounds;_mapView= [[MKMapView alloc]initWithFrame:CGRectMake(0, 50, rect.size.width, rect.size.height - 50)];[self.view addSubview:_mapView];//设置代理_mapView.delegate =self;//2、请求定位服务_locationManager =[[CLLocationManager alloc]init];if(![CLLocationManager locationServicesEnabled]||[CLLocationManager authorizationStatus]!=kCLAuthorizationStatusAuthorizedWhenInUse){[_locationManager requestWhenInUseAuthorization];}//3、用户位置追踪_mapView.userTrackingMode =MKUserTrackingModeFollow;//4、设置地图类型_mapView.mapType = MKMapTypeStandard;

2、拍照和录制视频关键代码：　

#import "ViewController.h"
#import <MobileCoreServices/MobileCoreServices.h>
#import <MediaPlayer/MediaPlayer.h>@interface ViewController () <UINavigationControllerDelegate, UIImagePickerControllerDelegate>@property (weak, nonatomic) IBOutlet UIImageView*imgView; //显示拍照的照片
@property (strong, nonatomic) UIImagePickerController*picker;
@property (assign, nonatomic) BOOL isChange;//是否切换拍照和录制视频
@property (assign, nonatomic) NSInteger currentTag; //当前tag
@property (nonatomic, strong) MPMoviePlayerController*moviePlayer;//视频播放控制器
@property (nonatomic, strong) NSURL *movieUrl; //视频录制路径
@property (nonatomic, strong) UIView *movieView; //播放器的View@end@implementationViewController- (void)viewDidLoad {[super viewDidLoad];//Do any additional setup after loading the view, typically from a nib.
}//初始化picker
- (UIImagePickerController *)picker{if (_isChange || _picker ==nil){_picker=[[UIImagePickerController alloc]init];_picker.sourceType= UIImagePickerControllerSourceTypeCamera;//设置image picker的来源_picker.cameraDevice = UIImagePickerControllerCameraDeviceRear;//设置使用哪个摄像头，这里设置为后置摄像头if (self.currentTag == 1) { //录制视频_picker.mediaTypes = @[(NSString *)kUTTypeMovie];_picker.videoQuality=UIImagePickerControllerQualityTypeIFrame1280x720;_picker.cameraCaptureMode= UIImagePickerControllerCameraCaptureModeVideo;//设置摄像头模式（拍照，录制视频）//NSLog(@"录制视频");
}else{ //拍照_picker.cameraCaptureMode =UIImagePickerControllerCameraCaptureModePhoto;//移除视频播放器控件if (self.moviePlayer !=nil){[self.movieView removeFromSuperview];self.moviePlayer=nil;}}_picker.allowsEditing=YES;//允许编辑_picker.delegate=self;//设置代理，检测操作
}return_picker;
}//视频播放器
-(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;
}//拍照和视频录制: tag = 0表示拍照，= 1表示录制视频
- (IBAction)openVideo:(UIButton *)sender {if (self.currentTag != sender.tag) self.isChange =YES;self.currentTag=sender.tag;[self presentViewController:self.picker animated:YES completion:nil];
}#pragma mark - 代理方法
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{NSString*mediaType=[info objectForKey:UIImagePickerControllerMediaType];if ([mediaType isEqualToString:(NSString *)kUTTypeImage]) {//当是拍照时UIImage *image;//如果允许编辑则获得编辑后的照片，否则获取原始照片if(self.picker.allowsEditing) {image= [info objectForKey:UIImagePickerControllerEditedImage];//获取编辑后的照片}else{image= [info objectForKey:UIImagePickerControllerOriginalImage];//获取原始照片
}[self.imgView setImage:image];//显示照片//UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil);//保存相片到相簿
}else if([mediaType isEqualToString:(NSString *)kUTTypeMovie]){//当是录制视频时
NSURL*url=[info objectForKey:UIImagePickerControllerMediaURL];//视频路径NSString *urlStr=[url path];//         //保存视频到相簿//if (UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(urlStr)) {//UISaveVideoAtPathToSavedPhotosAlbum(urlStr, self, nil, nil);//保存视频到相簿//}self.movieUrl =[NSURL fileURLWithPath:urlStr];[self.moviePlayer play];}//关闭照片选择器
[self dismissViewControllerAnimated:YES completion:nil];
}

DEMO下载：

github地址：https://github.com/xiaotanit/Tan_LocationPhotoVideo

原文链接：http://www.cnblogs.com/tandaxia/p/5507154.html