java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.view.Vie

Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.view.View.findViewById(int)' on a null object reference

造成这个崩溃的原因 基本上都是 页面还没有注入layout ，就操作里面的控件 。好简单的博客。哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈

一定要记住先加载了layout 再操作控件

fragment中：

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    View abcView = inflater.inflate(R.layout.fragment_adc,container,false);
    ButterKnife.bind(this, abcView);
    initData();
    return abcView ;
}