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) 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);

outState.putSerializable("records", (Serializable) records);

outState.putBoolean("isShowDays", isShowDays);

outState.putInt("spaceHeight", spaceHeight);

}