android 监听报错,Android：在fragment对按钮监听，会出现报错

一句话，不要在

onActivityCreated

里面初始化控件

请在

onCreateView

里面初始化

之前都是，这样不行的

nickname = (TextView) getActivity().findViewById(R.id.nickname);

要改成

nickname = (TextView) rootView.findViewById(R.id.nickname);

1.先定义定义一下View

private View rootView;

onCreateView这样写

@Override

public View onCreateView(LayoutInflater inflater, ViewGroup container,

Bundle savedInstanceState) {

if (null != rootView) {

ViewGroup parent = (ViewGroup) rootView.getParent();

if (null != parent) {

parent.removeView(rootView);

}

} else {

rootView = inflater.inflate(R.layout.fragment_home, container, false);

initView();// 控件初始化

}

return rootView;

}

private void initView() {

nickname = (TextView) rootView.findViewById(R.id.nickname);

}