iphone - 如何显示来自 NSDocumentDirectory 的照片
<p><p>我正在 iPad 上开发此应用程序。</p>
<p>“浏览”按钮的这些代码允许用户查看 iPad 画廊中的照片。</p>
<p>代码:</p>
<pre><code>- (IBAction) BrowsePhoto:(id)sender
{
UIImagePickerController *imagePickerController = [ init];
imagePickerController.delegate = self;
imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
UIPopoverController *popover = [ initWithContentViewController:imagePickerController];
;
;
self.popoverController = popover;
;
}
When a photo is selected, it will be stored into the application using NSDocumentDirectory.
Code:
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)selectedImage editingInfo:(NSDictionary *)editingInfo
{
;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDir = ;
NSString *savedImagePath = ;
UIImage *image = imageView.image;
NSData *imageData = UIImagePNGRepresentation(image);
;
}
</code></pre>
<p>现在我必须在第一个屏幕上添加一个“显示”按钮。
当点击按钮时，它将显示一个新 View (模态视图 Controller )并显示来自 NSDocumentDirectory 的缩略图/表格 View 中的所有照片。</p>
<p>当一张照片被选中时，它将从 NSDocumentDirectory 中删除。</p>
<p>我该怎么做？ </p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>要在 iPhone 中删除 NSDocumentDirectory 中的任何文件，你可以使用此代码，</p>
<pre><code>NSArray *sysPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES );
NSString *docDirectory = ;
NSString *filePath2 = ;
NSFileManager *fileManager = ;
BOOL exist =;
if(exist)
;
</code></pre></p>
<p style="font-size: 20px;">关于iphone - 如何显示来自 NSDocumentDirectory 的照片，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/7655290/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/7655290/
</a>
</p>
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