UIImagePickerController

1:让 UIImagePickerController 显示后 的状态栏始终保持某一种风格.

-(void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated{
    [[UIApplication  sharedApplication] setStatusBarStyle:UIStatusBarStyleBlackOpaque];
}
-(void)navigationController:(UINavigationController *)navigationController didShowViewController:(UIViewController *)viewController animated:(BOOL)animated{
    [[UIApplication  sharedApplication] setStatusBarStyle:UIStatusBarStyleBlackOpaque];
}

2:修改 UIImagePickerController 顶部导航栏的颜色风格

[[imagePickerController navigationBar] setTintColor:[UIColor colorWithRed:78.0/255.0 green:148.0/255.0 blue:201.0/255.0 alpha:1]];

此方式同时适用于:短信,邮件等系统界面

3:是否显示照相机标准的控件库

imagePickerController.showsCameraControls = NO;

4:将图片保存至系统照片库

UIImageWriteToSavedPhotosAlbum(image, self, @selector(image:didFinishSavingWithError:contextInfo:), nil);

成功失败后的回调:

- (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo
{
    myImageView.image = image;
    NSLog(@"%@",error);
}

5:将视频保存至系统照片库

NSString* path = [[info objectForKey:UIImagePickerControllerMediaURL] path];
// 保存视频
UISaveVideoAtPathToSavedPhotosAlbum(path, self, @selector(video:didFinishSavingWithError:contextInfo:), nil); 

成功失败后的回调:

- (void)video: (NSString *)videoPath didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo
{
    NSLog(@"%@",videoPath);
    NSLog(@"%@",error);
}

//首先判断设备是否支持拍照功能
    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
        if (imagePickerController == nil) {

            imagePickerController=[[UIImagePickerController alloc] init];
            //只开启拍照
            imagePickerController.sourceType=UIImagePickerControllerSourceTypeCamera;

            //拍照 摄影 同时开启
            //imagePickerController.mediaTypes =  [UIImagePickerController availableMediaTypesForSourceType:UIImagePickerControllerSourceTypeCamera];
            //只开启 摄影
            //imagePickerController.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeMovie];

            imagePickerController.videoQuality = UIImagePickerControllerQualityTypeHigh;//视频质量:最好的
            imagePickerController.cameraDevice =  UIImagePickerControllerCameraDeviceFront;  //默认启用前置摄像头
            imagePickerController.delegate = self;
            imagePickerController.modalTransitionStyle=UIModalTransitionStyleCrossDissolve;
            imagePickerController.showsCameraControls = YES;//是否显示照相机标准的控件库
            [imagePickerController setAllowsEditing:NO];//是否加入照相后预览时的编辑功能

            //为相机添加自定义拍摄时的视图
            //imagePickerController.cameraOverlayView = imagePreviewViewController.view;

            CGRect rect = [[UIScreen mainScreen] bounds];
            rect.origin.y = rect.origin.y +50;
            rect.size.height = rect.size.height -130;
            UIButton *btn =[UIButton buttonWithType:UIButtonTypeCustom];
            [btn setFrame:rect];
            //[btn setTitle:@"试试" forState:UIButtonTypeRoundedRect];
            [btn addTarget:self action:@selector(SaveCamera) forControlEvents:UIControlEventTouchUpInside];
            [imagePickerController.view addSubview:btn];

        }

		[self presentModalViewController:imagePickerController animated:YES];
	}