IOS给任意UIView截屏

  

   

    

     

    
    

     

      //获得某个window的某个subView
     
    
   

    

     

    
    

     

      UIView *view = [[[[[UIApplication sharedApplication] windows] objectAtIndex:0] subviews] lastObject];
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      NSInteger index = 0;//用来给保存的png命名
     
    
   

    

     

    
    

     

      for (UIView *subView in [view subviews]) {//遍历这个view的subViews
     
    
   

    

     

    
    

     

      if ([subView isKindOfClass:NSClassFromString(@"MKMapView")]) {//找到自己需要的subView
     
    
   

    

     

    
    

     

      NSLog(@"fund");
     
    
   

    

     

    
    

     

      //支持retina高分的关键
     
    
   

    

     

    
    

     

      if(UIGraphicsBeginImageContextWithOptions != NULL)
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     

      UIGraphicsBeginImageContextWithOptions(subView.frame.size, NO, 0.0);
     
    
   

    

     

    
    

     

      } else {
     
    
   

    

     

    
    

     

      UIGraphicsBeginImageContext(subView.frame.size);
     
    
   

    

     

    
    

     

      }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      //获取图像
     
    
   

    

     

    
    

     

      [subView.layer renderInContext:UIGraphicsGetCurrentContext()];
     
    
   

    

     

    
    

     

      UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
     
    
   

    

     

    
    

     

      UIGraphicsEndImageContext();
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      //保存图像
     
    
   

    

     

    
    

     

      NSString *path = [NSHomeDirectory() stringByAppendingFormat:@"/%d.png",index];
     
    
   

    

     

    
    

     

      if ([UIImagePNGRepresentation(image) writeToFile:path atomically:YES]) {
     
    
   

    

     

    
    

     

      index += 1;
     
    
   

    

     

    
    

     

      NSLog(@"Succeeded! %@",path);
     
    
   

    

     

    
    

     

      }
     
    
   

    

     

    
    

     

      else {
     
    
   

    

     

    
    

     

      NSLog(@"Failed!");
     
    
   

    

     

    
    

     

      }
     
    
   

    

     

    
    

     

      }
     
    
   

    

     

    
    

     

      }
     
    
  
 

  
 
 

文章来源: zzzili.blog.csdn.net，作者：清雨小竹，版权归原作者所有，如需转载，请联系作者。

原文链接：zzzili.blog.csdn.net/article/details/8449917