启用UIImagePickerController上的照片库按钮

Does anyone know how to enable the photo album button on the UIImagePickerController when its in the camera mode? Like how the camera app on on the iphone can toggle between image and video taking and also has the button to view the photo library?

有没有人知道如何在相机模式下启用UIImagePickerController上的相册按钮？就像iphone上的相机应用程序如何在图像和视频拍摄之间切换一样，还有按钮来查看照片库？

5 个解决方案

#1

I'm afraid that this can't be done in that easy way (just enable or disable some magic feature). For some simple requirement, you can use cameraOverlayView and showsCameraControls to make the implementation.

我担心这不能以那么简单的方式完成（只是启用或禁用一些魔术功能）。对于一些简单的要求，您可以使用cameraOverlayView和showsCameraControls来实现。

If you want to switch between photo/video mode, i think you can check this demo: http://developer.apple.com/library/ios/#samplecode/AVCam/Introduction/Intro.html

如果您想在照片/视频模式之间切换，我想您可以查看此演示：http：//developer.apple.com/library/ios/#samplecode/AVCam/Introduction/Intro.html

#2

This can be done via the following lines:

这可以通过以下几行完成：

- (void) navigationController: (UINavigationController *) navigationController  willShowViewController: (UIViewController *) viewController animated: (BOOL) animated {
    if (imagePickerController.sourceType == UIImagePickerControllerSourceTypePhotoLibrary) {
        UIBarButtonItem* button = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCamera target:self action:@selector(showCamera:)];
        viewController.navigationItem.rightBarButtonItems = [NSArray arrayWithObject:button];
    } else {
        UIBarButtonItem* button = [[UIBarButtonItem alloc] initWithTitle:@"Library" style:UIBarButtonItemStylePlain target:self action:@selector(showLibrary:)];
        viewController.navigationItem.leftBarButtonItems = [NSArray arrayWithObject:button];
        viewController.navigationItem.title = @"Take Photo";
        viewController.navigationController.navigationBarHidden = NO; // important
    }
}

- (void) showCamera: (id) sender {
    imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera;
}

- (void) showLibrary: (id) sender {
    imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
}

#3

Here is an example app and very simple library that lets you get the Take Photo or Choose from Library just like Facebook does. https://github.com/fulldecent/FDTake

这是一个示例应用程序和非常简单的库，让您可以像Facebook一样获取拍照或从库中选择。 https://github.com/fulldecent/FDTake

#4

I have done this tweaking Apple's PhotoPicker example app. I have removed all the camera controls and added my own button. When clicked, UIImagePickerControllerSourceType is set to the UIImagePickerControllerSourceTypePhotoLibrary.

我做了这个调整Apple的PhotoPicker示例应用程序。我删除了所有相机控件并添加了我自己的按钮。单击时，UIImagePickerControllerSourceType设置为UIImagePickerControllerSourceTypePhotoLibrary。

The tricky part for me was "dismissing" (might be technically the wrong word) the Photo Library after the image was picked. I did this by setting the source type back to UIImagePickerControllerSourceTypeCamera. This brings back the camera overlay view.

对我来说，棘手的部分是在拍摄图像后“解雇”（技术上可能是错误的单词）照片库。我通过将源类型设置回UIImagePickerControllerSourceTypeCamera来完成此操作。这会带回相机叠加视图。

ViewController.h

#import <UIKit/UIKit.h>
#import <CoreGraphics/CoreGraphics.h>
#import <ImageIO/ImageIO.h>


@interface ViewController : UIViewController <UIImagePickerControllerDelegate> {

//

}

@property (nonatomic, strong) UIImagePickerController *imagePicker;
- (IBAction)uploadNewPhotoTapped:(id)sender;
@end


ViewController.m

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

 //Other code

- (IBAction)uploadNewPhotoTapped:(id)sender {

    UIImagePickerController *imagePickController=[[UIImagePickerController alloc]init];
    //You can use isSourceTypeAvailable to check

    if ([UIImagePickerController    isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
    {
        imagePickController.sourceType=UIImagePickerControllerSourceTypeCamera;
        imagePickController.showsCameraControls=YES;
        //  self.usingPopover = NO;
    }
    else if ([UIImagePickerController  isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {//Check PhotoLibrary  available or not
        imagePickController.sourceType=UIImagePickerControllerSourceTypePhotoLibrary;
        imagePickController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    }
    else if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeSavedPhotosAlbum]) //Check front Camera available or not
        imagePickController.sourceType=UIImagePickerControllerSourceTypeSavedPhotosAlbum;
    //else //!!!!!!!!!!!exception

    imagePickController.delegate=self;
    imagePickController.allowsEditing=NO;

    [self presentModalViewController:imagePickController animated:YES];
}


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

    UIImage *originalImage=[info objectForKey:UIImagePickerControllerOriginalImage];

    //Do whatever with your image   
    NSData *data = UIImageJPEGRepresentation (
                                          originalImage,
                                          1.0
                                          );

    [self dismissModalViewControllerAnimated:YES];
}

   // Other code
   @end

#5

Swift2 version of @epsilontik code:

Swift2版本的@epsilontik代码：

    //mediaPicker is your UIImagePickerController
func navigationController(navigationController: UINavigationController, willShowViewController viewController: UIViewController, animated: Bool) {
    if(mediaPicker.sourceType == UIImagePickerControllerSourceType.PhotoLibrary){
        let button = UIBarButtonItem(title: "Take picture", style: UIBarButtonItemStyle.Plain, target: self, action: "showCamera")
        viewController.navigationItem.rightBarButtonItem = button
    }else{
        let button = UIBarButtonItem(title: "Choose picture", style: UIBarButtonItemStyle.Plain, target: self, action: "choosePicture")
        viewController.navigationItem.rightBarButtonItem = button
        viewController.navigationController?.navigationBarHidden = false
        viewController.navigationController?.navigationBar.translucent = true
    }
}

func showCamera(){
    mediaPicker.sourceType = UIImagePickerControllerSourceType.Camera
}

func choosePicture(){
    mediaPicker.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
}

#1