打开照相和本地相册

_mediaUI = [[UIImagePickerController alloc] init];
    _mediaUI.delegate = self;

- (IBAction)photographBtn:(id)sender {
    UIImagePickerControllerSourceType sourceType = UIImagePickerControllerSourceTypeCamera;
    if ([UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypeCamera])
    {
        _mediaUI.sourceType = sourceType;
        _mediaUI.mediaTypes = [[NSArray alloc] initWithObjects: (NSString *)  kUTTypeImage  , nil];
        _mediaUI.allowsEditing = YES;
        [self presentViewController:_mediaUI animated:YES completion:nil];
    }else{
        NSLog(@"模拟其中无法打开照相机,请在真机中使用");
    }
}

- (IBAction)albumBtn:(id)sender {
    _mediaUI.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    _mediaUI.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType: UIImagePickerControllerSourceTypeSavedPhotosAlbum];
    _mediaUI.allowsEditing = NO;
    [self presentViewController:_mediaUI animated:YES completion:nil];
}

- (IBAction)cancelBtn:(id)sender {
    [self.navigationController popViewControllerAnimated:YES];
}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    UIImage *image = nil;
    NSString *path = [NSString stringWithFormat:@"%@",[info objectForKey:UIImagePickerControllerReferenceURL]];
    NSArray *typeArray = [path componentsSeparatedByString:@"="];
    NSString *type = [typeArray lastObject];
    if(picker.sourceType == UIImagePickerControllerSourceTypeCamera)
    {
        image = [info objectForKey:UIImagePickerControllerOriginalImage];
    }
    else
    {
        NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];
        if (CFStringCompare ((CFStringRef) mediaType, kUTTypeImage, 0) == kCFCompareEqualTo)
        {
            image = (UIImage *) [info objectForKey:UIImagePickerControllerOriginalImage];
        }
    }
    NSData *data = nil;
    if ([type isEqualToString:@"JPG"]) {
        data = UIImageJPEGRepresentation(image, 1.0);
    }else{
        data = UIImagePNGRepresentation(image);
    }
//    NSString *fileNameTemp = typeArray[1];
//    NSString *filename = [NSString stringWithFormat:@"%@.%@",[[fileNameTemp componentsSeparatedByString:@"&"] firstObject],type];
//    //图片保存的路径
//    //这里将图片放在沙盒的documents文件夹中
//    NSString * DocumentsPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
//    //文件管理器
//    NSFileManager *fileManager = [NSFileManager defaultManager];
//    //把刚刚图片转换的data对象拷贝至沙盒中 并保存为image.png
//    [fileManager createDirectoryAtPath:DocumentsPath withIntermediateDirectories:YES attributes:nil error:nil];
//    [fileManager createFileAtPath:[DocumentsPath stringByAppendingString:@"/image.png"] contents:data attributes:nil];

    [picker dismissViewControllerAnimated:YES completion:nil];
    _headPortrait.image = [[UIImage imageWithData:data] getRoundImage];

}

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