之前一篇文章 Dialog使用介绍 介绍了DialogFragemnt的一些使用常识，本文来简单介绍DialogFragment常用的生命周期函数，调用顺序如下：
onAttach -->onCreate-->onCreateDialog-->onCreateView-->onViewCreated-->onSaveInstanceState

在onAttach里传入要attach的Activity实例，使得在DialogFragment中可以调用Activity的函数。

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        historyViewClickListener = (OnHistoryViewClickListener) activity;
        context = activity;
在onCreate里对DialogFragment的样式进行设置，如是不是全屏显示，要不要展示Titlebar等。
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setStyle(STYLE_NO_FRAME, android.R.style.Theme_Holo_Light); // 没有titlebar，全屏展示
在onCreateDialog里设置dialog监听函数，如对返回键的监听。
    @NonNull
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        Dialog dialog = super.onCreateDialog(savedInstanceState);
        dialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
        dialog.setOnKeyListener(new DialogInterface.OnKeyListener() {
            @Override
            public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {
                if (keyCode == KeyEvent.KEYCODE_BACK) {
                    doHide();
                    return true;
                return false;
        return dialog;
在onCreateView中进行view的初始化，并且解析savedIsntanceState Bundle数据，处理DialogFragment被回收后进行重建的数据处理逻辑。
    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = getActivity().getLayoutInflater().inflate(R.layout.atom_flight_history_record_view, container, false);
        Injector.inject(this, view);
        if (null != savedInstanceState) {
            records = (List<SearchRecord>) savedInstanceState.getSerializable("records");
            isShowDays = savedInstanceState.getBoolean("isShowDays", false);
            spaceHeight = savedInstanceState.getInt("spaceHeight");
            listAdapter = new FlightHistoryListAdapter(context, records, isShowDays);
        } else {
            listAdapter = new FlightHistoryListAdapter(context, records, isShowDays);
         return view;
onViewCreated紧跟在onCreateView之后执行，执行界面初始化完成之后的一些操作，如动画效果。
    @Override
    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        showHistoryAnimation();
在onSaveInstanceState中保存重构页面需要的数据。
    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);