ipad - 如何从 iPad 的图库中访问照片？

Question

我想访问 iPad 照片库并检索图像并将其显示在图像视图中。

Answer 1

使用资产库框架

http://www.icodeblog.com/2010/10/07/cloning-uiimagepickercontroller-using-the-assets-library-framework/

Answer 2

您是否正在寻求有关 UIImagePickerController 的帮助？

http://trailsinthesand.com/picking-images-with-the-iphone-sdk-uiimagepickercontroller/

Answer 3

UIImagePickerController 的 iPad 等价物是 UIPopoverController。这个 YouTube 视频展示了一个基本的实现：http ://www.youtube.com/watch?v=gaaLMKuPwfU 。我刚刚添加了一个检查，以便一次只存在一个 Popover；见 if (pop.isPopoverVisible == TRUE)下文。视频展示了如何使用 Interface Builder 连接按钮。（显然，您需要设备或模拟器上的图像才能正常工作。）希望它有所帮助。

头文件：

#import <UIKit/UIKit.h>

@interface MyViewController : UIViewController <UIPopoverControllerDelegate, UINavigationControllerDelegate, UIImagePickerControllerDelegate>
{    
}
- (IBAction)barBtn1:(id)sender;

@end

实施文件：

#import "MyViewController.h"

@implementation MyViewController

- (IBAction)barBtn1:(id)sender
{
    UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
    [imagePicker setDelegate:self];

    // If user selects button while previous pop is visible, dismiss previous pop.
    if (pop.isPopoverVisible == TRUE)
    {
        [pop dismissPopoverAnimated:YES];
    }
    UIPopoverController *pop = [[UIPopoverController alloc] initWithContentViewController:imagePicker];
    [pop setDelegate:self];
    [pop presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
    [imagePicker release];
}