uikeyboard所在uiwindow

- (UIView *)findKeyboard
{
UIView *keyboardView = nil;
NSArray *windows = [[UIApplication sharedApplication] windows];
for (UIWindow *window in [windows reverseObjectEnumerator])//逆序效率更高，因为键盘总在上方
{
keyboardView = [self findKeyboardInView:window];
if (keyboardView)
{
return keyboardView;
}
}
return nil;
}
- (UIView *)findKeyboardInView:(UIView *)view
{
for (UIView *subView in [view subviews])
{
if (strstr(object_getClassName(subView), "UIKeyboard"))
{
return subView;
}
else
{
UIView *tempView = [FTEView findKeyboardInView:subView];
if (tempView)
{
return tempView;
}
}
}
return nil;
}

UIWindow* tempWindow = [[[UIApplication sharedApplication]windows] objectAtIndex:1];
int viewCount =[tempWindow.subviewscount];
for (int i = 0; i < viewCount; i++)
{
keyboard =[tempWindow.subviewsobjectAtIndex:i];
NSLog(@"%@",[keyboard description] );
}

如果确定键盘所在的window 那么只需要采用 window的 结束编辑方法，例如：
[[UIApplication sharedApplication].keyWindow endEditing:YES];
如果是自己定义的UIWindow，那么直接使用：
[myWindow endEditing:YES];