通过调用系统摄像头拍照,拍视频

通过调用系统摄像头拍照,拍视频

- (IBAction)takePicture:(id)sender {

    

    UIImagePickerController *picker = [[UIImagePickerController alloc] init];

    

    if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {

        picker.sourceType = UIImagePickerControllerSourceTypeCamera;

        NSArray *temp_MediaTypes = [UIImagePickerController availableMediaTypesForSourceType:picker.sourceType];

        picker.mediaTypes = temp_MediaTypes;

        picker.delegate = self;

        picker.allowsImageEditing = YES;    

    }

    

    [self presentModalViewController:picker animated:YES];

    [picker release];

    

}

//下面两个函数是遵守 UIImagePickerControllerDelegate这个协议所实现的类.这样就能够完整的实现,获取照片或者视频,然后写入文件的过程.

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info

{

    

    NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];

    

    BOOL success;

    NSFileManager *fileManager = [NSFileManager defaultManager];

    NSError *error;

    

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

    NSString *documentsDirectory = [paths objectAtIndex:0];

    

    if ([mediaType isEqualToString:@"public.image"]){

        

        UIImage *image = [info objectForKey:@"UIImagePickerControllerEditedImage"];

        NSLog(@"found an image");

        

        NSString *imageFile = [documentsDirectory stringByAppendingPathComponent:@"temp.jpg"];

        NSLog(@"%@", imageFile);

        

        success = [fileManager fileExistsAtPath:imageFile];

        if(success) {

            success = [fileManager removeItemAtPath:imageFile error:&error];

        }

        

        imageView.image = image;

        [UIImageJPEGRepresentation(image, 1.0f) writeToFile:imageFile atomically:YES];