用數據保存圖片

Question

我知道如何保存圖片，這是迄今爲止的代碼。此代碼顯示用戶點擊一個按鈕並能夠拍照。

-(IBAction)TakePhoto { 
picker = [[UIImagePickerController alloc]init]; 
picker.delegate = self; 
[picker setSourceType:UIImagePickerControllerSourceTypeCamera]; 
[self presentViewController:picker animated:YES completion:nil]; 
} 

- (IBAction)ChooseExisting { 
picker2 = [[UIImagePickerController alloc]init]; 
picker2.delegate = self; 
[picker2 setSourceType:UIImagePickerControllerSourceTypePhotoLibrary]; 
[self presentViewController:picker2 animated:YES completion:nil]; 

} 


- (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { 
image = [info objectForKey:UIImagePickerControllerOriginalImage]; 
[imageview setImage:image]; 

//Save Your Image ====== 
UIImage *yourImage = imageview.image;//imageView.image; 
NSString *docDirPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"]; 
NSString *filePath = [docDirPath stringByAppendingPathComponent:@"myImageFile.png"]; 
[UIImagePNGRepresentation(yourImage) writeToFile:filePath atomically:YES]; 
[self dismissViewControllerAnimated:YES completion:nil]; 

} 


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

} 

不過，我想我保存的圖片分類到6類或流派用戶具有使用分割視圖控件挖掘。這可能嗎？我非常新的ios編程和Xcode中的Objective-C，並與許多視圖控制器混淆，但我真的很喜歡這個工作，我無法找到任何關於此主題的資源。謝謝。

Answer 1

這裏是影像保存到特定專輯使用ALAssetsLibrary一個很好的演示：

http://www.touch-code-magazine.com/ios5-saving-photos-in-custom-photo-album-category-for-download/

我希望它會幫助你...

或

您可以創建不同使用這段代碼的庫：

-(void)createDirectory:(NSString *)directoryName atFilePath:(NSString *)filePath 
{ 
    NSString *filePathAndDirectory = [filePath stringByAppendingPathComponent:directoryName]; 
    NSError *error; 

    if (![[NSFileManager defaultManager] createDirectoryAtPath:filePathAndDirectory 
            withIntermediateDirectories:NO 
                attributes:nil 
                 error:&error]) 
    { 
     NSLog(@"Create directory error: %@", error); 
    } 
} 

並通過各自的路徑獲取圖像！

欲瞭解更多信息，請參閱本：http://kmithi.blogspot.in/2012/08/ios-application-directory-structure.html