title: Why the id of view from getview () is different in onViewCreated() and onActivityCreated()
body: <p>I tested with the following code in Fragment</p>
  <pre><code>override fun onCreateView(
      inflater: LayoutInflater,
      container: ViewGroup?,
      savedInstanceState: Bundle?
  ): View? {
      val view = inflater.inflate(R.layout.fragment_view_test, container, false)
      Log.d(&quot;m&quot;, &quot;onCreateView view id: ${view.id}&quot;)
      Log.d(&quot;m&quot;, &quot;onCreateView view hash: ${view.hashCode()}&quot;)
      Log.d(&quot;m&quot;, &quot;onCreateView get view id: ${getView()?.id}&quot;)
      Log.d(&quot;m&quot;, &quot;onCreateView get view hash: ${getView()?.hashCode()}&quot;)
      return view
  }
  
  override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
      super.onViewCreated(view, savedInstanceState)
      Log.d(&quot;m&quot;, &quot;onViewCreated view id: ${view.id}&quot;)
      Log.d(&quot;m&quot;, &quot;onViewCreated view hash: ${view.hashCode()}&quot;)
      Log.d(&quot;m&quot;, &quot;onViewCreated get view id: ${getView()?.id}&quot;)
      Log.d(&quot;m&quot;, &quot;onViewCreated get view hash: ${getView()?.hashCode()}&quot;)
  }
  
  override fun onActivityCreated(savedInstanceState: Bundle?) {
      super.onActivityCreated(savedInstanceState)
      Log.d(&quot;m&quot;, &quot;onActivityCreated get view id: ${getView()?.id}&quot;)
      Log.d(&quot;m&quot;, &quot;onActivityCreated get view hash: ${getView()?.hashCode()}&quot;)
  }
  </code></pre>
  <p>The results are shown below. You can see that their hashcodes are the same. But id has changed in onActivityCreated(). Is that why?</p>
  <pre><code>onCreateView view id: 2131230839
  onCreateView view hash: 211623483
  onCreateView get view id: null
  onCreateView get view hash: null
  onViewCreated view id: 2131230839
  onViewCreated view hash: 211623483
  onViewCreated get view id: **2131230839**
  onViewCreated get view hash: 211623483
  onActivityCreated get view id: **2131230981**
  onActivityCreated get view hash: 211623483
  </code></pre>