ios开发调用系统相机（照片／视频）

调用系统相机使用 UIImagePickerController

首先遵理代理：

@interface HomeViewController ()<UIImagePickerControllerDelegate,UINavigationControllerDelegate>

上代码（拍摄照片）:

- (IBAction)SystemCamera:(id)sender {        UIImagePickerController *pickerCon = [[UIImagePickerController alloc]init];    pickerCon.sourceType = UIImagePickerControllerSourceTypeCamera;    pickerCon.allowsEditing = NO;//是否可编辑    pickerCon.delegate = self;    [self presentViewController:pickerCon animated:YES completion:nil];    }

若是拍摄视频：

- (IBAction)SystemCamera:(id)sender {        UIImagePickerController *pickerCon = [[UIImagePickerController alloc]init];    pickerCon.sourceType = UIImagePickerControllerSourceTypeCamera;        pickerCon.mediaTypes = @[(NSString *)kUTTypeMovie];//设定相机为视频    pickerCon.cameraDevice = UIImagePickerControllerCameraDeviceRear;//设置相机后摄像头    pickerCon.videoMaximumDuration = 10;//最长拍摄时间    pickerCon.videoQuality = UIImagePickerControllerQualityTypeHigh;//拍摄质量        pickerCon.allowsEditing = NO;//是否可编辑    pickerCon.delegate = self;    [self presentViewController:pickerCon animated:YES completion:nil];    }

也可将二者合一，只需修改pickerCon.mediaTypes属性：

pickerCon.mediaTypes = @[(NSString *)kUTTypeMovie,(NSString *)kUTTypeImage];

关于相机视频的更多设置，可以参考http://blog.csdn.net/lc_1581835288/article/details/50471482

注意：使用kUTTypeMovie时，需添加头文件#import<MobileCoreServices/MobileCoreServices.h>

使用UIImagePickerController拍摄完成回调方法：

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info{        NSString *mediaType=[info objectForKey:UIImagePickerControllerMediaType];    if ([mediaType isEqualToString:(NSString *)kUTTypeImage]) {//如果是拍照        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 (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.resultImgView.image = image;        UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil);//保存到相簿    }else if([mediaType isEqualToString:(NSString *)kUTTypeMovie]){//如果是录制视频        NSLog(@"video...");        NSURL *url=[info objectForKey:UIImagePickerControllerMediaURL];//视频路径        NSString *urlStr=[url path];        if (UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(urlStr)) {            //保存视频到相簿，注意也可以使用ALAssetsLibrary来保存            UISaveVideoAtPathToSavedPhotosAlbum(urlStr, self, @selector(video:didFinishSavingWithError:contextInfo:), nil);//保存视频到相簿        }            }        [picker dismissViewControllerAnimated:YES completion:nil];}