将图像保存到给定位置 [英] Saving images to a given location

问题描述

我想截取iPhone应用视图的截图并将图像保存到指定位置。

我的代码将图像保存到照片库，但是我想要将它保存到其他给定位置。有可能这样做吗？请帮助我。

我的代码在这里：

  UIGraphicsBeginImageContext （self.view.bounds.size）; 
 [self.view.layer renderInContext：UIGraphicsGetCurrentContext（）]; 
 UIImage * viewImage = UIGraphicsGetImageFromCurrentImageContext（）; 
 UIGraphicsEndImageContext（）; 
 UIImageWriteToSavedPhotosAlbum（viewImage，self，nil，nil）; 
  

解决方案

您可以使用NSData存储图像数据。<保证图像：

  NSData * imageData = [NSData dataWithData ：UIImagePNGRepresentation（MYIMAGE）]; 
 [imageData writeToFile：imagePath atomically：YES]; 
  

要检索图像：

  UIImage * myImage = [UIImage imageWithContentsOfFile：imagePath]; 
  

更新＃1：示例（我现在无法测试示例，但它应该以这种方式工作）：

  UIGraphicsBeginImageContext（self.view.bounds.size）; 
 self.view.layer renderInContext：UIGraphicsGetCurrentContext（）]; 
 UIImage * viewImage = UIGraphicsGetImageFromCurrentImageContext（）; 
 //获取Documents目录的位置
 NSArray * paths = NSSearchPathForDirectoriesInDomains（NSDocumentDirectory，NSUserDomainMask，YES）; 
 NSString * imagePath = [paths objectAtIndex：0]; 
 NSString * filename = @test.png; 
 NSString * filepath = [NSString stringWithFormat：@％@ /％@，imagePath，filename]; 
 UIGraphicsEndImageContext（）; 
 //保存图像
 NSData * imageData = [NSData dataWithData：UIImagePNGRepresentation（myImage）]; 
 [imageData writeToFile：filepath atomically：YES]; 
  

I want to take screenshots of the iPhone app view and save the images to a given location.

My code below saves the images to the photo library, but I want to save it to some other given location. Is it possible to do so? Please help me up.

My code is here:

UIGraphicsBeginImageContext(self.view.bounds.size);
[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
UIImageWriteToSavedPhotosAlbum(viewImage, self, nil, nil);

解决方案

You can use NSData to store the image data.

To save the image:

 NSData *imageData = [NSData dataWithData:UIImagePNGRepresentation(myImage)];  
[imageData writeToFile:imagePath atomically:YES];

To retrieve the image:

 UIImage *myImage = [UIImage imageWithContentsOfFile:imagePath];

Update #1: Example (I can't test the example right now but it should work this way):

 UIGraphicsBeginImageContext(self.view.bounds.size);  
self.view.layer renderInContext:UIGraphicsGetCurrentContext()];  
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();   
// Get the location of the Documents directory  
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) ;  
NSString *imagePath = [paths objectAtIndex:0];  
NSString *filename = @"test.png" ;   
NSString *filepath = [NSString stringWithFormat:@"%@/%@", imagePath, filename];  
UIGraphicsEndImageContext();  
// Save the image   
NSData *imageData = [NSData dataWithData:UIImagePNGRepresentation(myImage)];  
[imageData writeToFile:filepath atomically:YES];

这篇关于将图像保存到给定位置的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！