IOS给任意UIView截屏

		[cpp] 
//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!");  
}  
}  
}  
 
						
		
	

补充：移动开发 , IOS ,

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