Iphone 将JPG图像从文档保存到相册-示例代码

我已经生成了JPG图像，保存到Documents文件夹中，这不是捆绑包附带的。 请帮助将建筑类保存到Gallery

最后借助于

要制定完整的解决方案：

//工具

#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>

@interface tools : NSObject {

}

@end

最后必须从CPP包装器调用它：

void onCPPSaveImgToCamRoll ( )
{
    return saveImage;
}

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尝试按如下方式获取imagePath：

NSArray *paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory=[paths objectAtIndex:0];
NSString *imagePath=[documentsDirectory stringByAppendingPathComponent:@"Image.jpg"];

然后设置图像：

 UIImage *image=[UIImage imageWithContentsOfFile:imagePath];
UIImageWriteToSavedPhotosAlbum(image, self,@selector(savedPhotoImage:didFinishSavingWithError:contextInfo:), nil);

savedPhotoImage:didFinishSavingWithError:contextInfo:将在完成保存或失败时调用

只需在类中创建两个方法：

-(void)saveImage{ 

NSArray *paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 

NSString *documentsDirectory=[paths objectAtIndex:0]; 

NSString *imagePath=[documentsDirectory stringByAppendingPathComponent:@"Image.jpg"]; 

UIImage *image=[UIImage imageWithContentsOfFile:imagePath]; 

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


} 
- (void)savedPhotoImage:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInf{ 

// possible error handling

}

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您应该没问题–

您的答案在UIImage类参考的第一页

void UIImageWriteToSavedPhotosAlbum ( UIImage *image, id completionTarget, SEL completionSelector, void *contextInfo ); void UIImageWriteToSavedPhotosAlbum( UIImage*图像， id completionTarget， SEL补全选择器， void*contextInfo );

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为数不多的几个事实上完全直截了当的例子之一：不要忘记包括savedPhotoImage:didfish。。。方法，使应用程序不会崩溃..：-D void UIImageWriteToSavedPhotosAlbum ( UIImage *image, id completionTarget, SEL completionSelector, void *contextInfo );