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