導(dǎo)入系統(tǒng)庫以方便獲取媒體類型常量

#import <MobileCoreServices/UTCoreTypes.h>

檢查相機(jī)是否可用

#pragma mark - 檢查相機(jī)是否可用
-(void)isCameraAvail
{
    BOOL isAvailable = [UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera];
    if (isAvailable) {
        NSLog(@"相機(jī)可用");
    } else {
        NSLog(@"相機(jī)不可用 ");
    }
}

檢查攝像頭是否可用

#pragma mark - 檢查攝像頭是否可用
-(void)isCameraFront
{
    /*
     UIImagePickerControllerCameraDeviceFront 前置攝像頭
     UIImagePickerControllerCameraDeviceRear 后置攝像頭
     */
    BOOL isAvailable = [UIImagePickerController isCameraDeviceAvailable:UIImagePickerControllerCameraDeviceFront];
    if (isAvailable) {
        NSLog(@"攝像頭可用");
    } else {
        NSLog(@"攝像頭不可用");
    }
}

檢查閃光燈是否可用

#pragma mark - 檢查閃光燈是否可用
-(void)isFlashAvailable
{
    /*
     UIImagePickerControllerCameraDeviceFront 前置攝像頭
     UIImagePickerControllerCameraDeviceRear 后置攝像頭
     */
    BOOL isAvailable = [UIImagePickerController isFlashAvailableForCameraDevice:UIImagePickerControllerCameraDeviceFront];
    if (isAvailable) {
        NSLog(@"閃光燈可用");
    } else {
        NSLog(@"閃光燈不可用");
    }
}

支持的媒體類型

#pragma mark - 支持的媒體類型
-(void)cameraSupportMedia
{
    NSArray *mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:UIImagePickerControllerSourceTypeCamera];
    for (NSString *type in mediaTypes) {
        /*
         public.image
         public.movie
         */
        NSLog(@"type - %@",type);
    }
}

調(diào)用相機(jī) (其中有將圖片保存到手機(jī))

-(void)configCamera
{
    UIImagePickerController *controller = [[UIImagePickerController alloc] init];
    controller.sourceType = UIImagePickerControllerSourceTypeCamera;
    NSString *mediaType = (__bridge NSString *)kUTTypeImage;
    controller.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:UIImagePickerControllerSourceTypeCamera]; // @[mediaType]; 支持媒體類型 圖片 視頻
    controller.allowsEditing = YES;
    controller.delegate = self;
    controller.cameraFlashMode = UIImagePickerControllerCameraFlashModeOn; // 開啟閃光燈
    controller.cameraDevice = UIImagePickerControllerCameraDeviceRear; // 前置攝像頭
    [self presentViewController:controller animated:YES completion:NULL];
}

#pragma mark - UIImagePickerControllerDelegate
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<UIImagePickerControllerInfoKey, id> *)info
{
    NSLog(@" %@ ",info);
    NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];
    if ([mediaType isEqualToString:(__bridge NSString *)kUTTypeImage]) { // 照片
        
        UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
        
        // 將照片儲(chǔ)存到手機(jī)
        SEL saveImage = @selector(imageSavedSuccess:didFinishSaveWithError:contextInfo:);
        UIImageWriteToSavedPhotosAlbum(image, self, saveImage, NULL);
        
    } else if ([mediaType isEqualToString:(__bridge NSString *)kUTTypeVideo]) { // 視頻
        
        // UIImagePickerControllerMediaURL
        
    }
}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
    [picker dismissViewControllerAnimated:YES completion:NULL];
}

#pragma mark - private method
-(void)imageSavedSuccess:(UIImage *)image
  didFinishSaveWithError:(NSError *)error
             contextInfo:(void *)info
{
    if (!error) {
        NSLog(@"圖片保存成功");
    } else {
        NSLog(@"圖片保存失敗");
    }
}

視頻拍攝

• 視頻配置

UIImagePickerController *controller = [[UIImagePickerController alloc] init];
    controller.sourceType = UIImagePickerControllerSourceTypeCamera;
    // 拍攝類型
    NSString *mediaType = (__bridge NSString *)kUTTypeMovie;
    controller.mediaTypes = @[mediaType];
    controller.delegate = self;
    controller.videoQuality = UIImagePickerControllerQualityTypeHigh; // 視頻質(zhì)量
    controller.videoMaximumDuration = 30.0f;  // 設(shè)置最長拍攝時(shí)間
    [self presentViewController:controller animated:YES completion:NULL];

• UIImagePickerControllerDelegate

NSString *type = [info objectForKey:UIImagePickerControllerMediaType];
    if ([type isEqualToString:(__bridge NSString *)kUTTypeMovie]) {
        NSURL *url = [info objectForKey:UIImagePickerControllerMediaURL];
        NSString *path = url.path;
        //  判斷能不能保存到相冊(cè)
        if (UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(path)) {
            UISaveVideoAtPathToSavedPhotosAlbum(path, self, @selector(video:didFinishSavingWithError:contextInfo:), NULL);
        }
    }

-(void)video:(NSString *)videoPath didFinishSavingWithError:(NSString *)error contextInfo:(void *)info
{
    if (!error) {
        NSLog(@"視頻保存成功");
    } else {
        NSLog(@"失敗");
    }
}