如何使用ButterKnife注入ViewStub？

Question

我想使用ButterKnife一個ViewStub，這是我做了什麼：

public class ExampleFragment extends Fragment { 

    @InjectView (R.id.stub) 
    ViewStub mStub; 

    /* A TextView in the ViewStub */ 
    @InjectView (R.id.text) 
    @Optional 
    TextView mText; 

    @Override 
    public View onCreateView (LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 

     View rootView = inflater.inflate (R.layout.rootview, container, false); 
     ButterKnife.inject (this, rootView); 

     mStub.setLayoutResource (R.layout.stub_layout); 
     View inflated = mStub.inflate(); 
     ButterKnife.inject (mStub, inflated); 

     mText.setText("test.");  

     return rootView; 
    } 
} 

和日誌說：

mText is a null object reference

我不知道現在，任何意見是受歡迎的。謝謝！

Answer 1

下面是從傑克的回答該請求：

創建保持該存根內的視圖的嵌套類，然後調用上使用viewstub作爲根的這個類的實例注入。

有關代碼，請參閱此Github問題。

Answer 2

您可以創建一個嵌套的類，它包含存根中的視圖。

public class ExampleFragment extends Fragment { 

    @InjectView (R.id.stub) 
    ViewStub mStub; 

    @Override 
    public View onCreateView (LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 

     View rootView = inflater.inflate (R.layout.rootview, container, false); 
     ButterKnife.inject (this, rootView); 

     mStub.setLayoutResource (R.layout.stub_layout); 
     View inflated = mStub.inflate(); 
     MyStubView stubView = new MyStubView(inflated); 
     stubView.mText.setText("test.");  

     return rootView; 
    } 

    // class (inner in this example) that has stuff from your stub 
    public class MyStubView { 
     @InjectView(R.id.text) 
     TextView mText; 

     public MyStubView(View view) { 
      Butterknife.inject(this, view); 
     } 
    } 
}