butterknife 8.5.1片段错误

Question

我在我的片段中使用butterknife 8.5.1 &应用程序发生错误：java.lang.IllegalStateException：绑定已被清除。下面 是我的代码部分：

文件名：BaseFragment： ....

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, 
         Bundle savedInstanceState) { 
    if (mView == null && context != null) { 
     mView = inflater.inflate(getLayoutId(), container, false); 
     if (savedInstanceState != null) { 
      onRestoreInstanceState(savedInstanceState); 
     } 
     unbinder = ButterKnife.bind(this, mView); 
     initParams(); 
    } else if (mView != null) { 
     ViewGroup parent = (ViewGroup) mView.getParent(); 
     if (parent != null) { 
      parent.removeView(mView); 
     } 
    } 
    return mView; 
} 
@Override 
public void onDestroyView() { 
    super.onDestroyView(); 
     unbinder.unbind(); 


} 

... 任何人见过这样的问题，并帮助？谢谢 ！

Answer 1

这是因为你的行不执行：

unbinder = ButterKnife.bind(this, mView); 

可能是因为您的代码不fulfit条件：

if (mView == null && context != null) 

绑定像这样的情况外：

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, 
         Bundle savedInstanceState) { 
    unbinder = ButterKnife.bind(this, mView); 
    if (mView == null && context != null) { 
     mView = inflater.inflate(getLayoutId(), container, false); 
     if (savedInstanceState != null) { 
      onRestoreInstanceState(savedInstanceState); 
     } 
     initParams(); 
    } else if (mView != null) { 
     ViewGroup parent = (ViewGroup) mView.getParent(); 
     if (parent != null) { 
      parent.removeView(mView); 
     } 
    } 
    return mView; 
} 
@Override 
public void onDestroyView() { 
    super.onDestroyView(); 
     unbinder.unbind(); 


} 

或者你可以检查ButterKnife是否绑定。

Answer 2

在fragment使用正确的方法：

private Unbinder unbinder; 

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, 
         Bundle savedInstanceState) { 
    // Inflate the layout 
    View view = inflater.inflate(R.layout.content_main, container, false); 

    unbinder = ButterKnife.bind(this, view); 

    return view; 
} 

@Override 
public void onDestroyView() { 
    super.onDestroyView(); 
    unbinder.unbind(); 
}