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  和Activity一样，Fragment也有自己的生命周期。 一个Fragment必须总是嵌入在一个Activity中，同时Fragment的生命周期受Activity而影响。

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<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"tools:context=".MainActivity" ><fragmentandroid:id="@+id/fragment"android:layout_width="match_parent"android:layout_height="match_parent"class="cn.eoe.leigo.lifecycle.MyFragment" /></RelativeLayout>

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package cn.eoe.leigo.lifecycle;import cn.eoe.leigo.fragment.R;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;public class MainActivity extends Activity {private static final String TAG = "MainActivity";@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Log.d(TAG, "-----Activity onCreate-----");}@Overrideprotected void onStart() {super.onStart();Log.d(TAG, "-----Activity onStart-----");}@Overrideprotected void onRestart() {super.onRestart();Log.d(TAG, "-----Activity onRestart-----");}@Overrideprotected void onResume() {super.onResume();Log.d(TAG, "-----Activity onResume-----");}@Overrideprotected void onPause() {super.onPause();Log.d(TAG, "-----Activity onPause-----");}@Overrideprotected void onStop() {super.onStop();Log.d(TAG, "-----Activity onStop-----");}@Overrideprotected void onDestroy() {super.onDestroy();Log.d(TAG, "-----Activity onDestroy-----");}
}

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package cn.eoe.leigo.lifecycle;import android.app.Activity;
import android.app.Fragment;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;public class MyFragment extends Fragment {private static final String TAG = "MyFragment";@Overridepublic void onAttach(Activity activity) {super.onAttach(activity);Log.d(TAG, "----------Fragment onAttach----------");}@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);Log.d(TAG, "----------Fragment onCreate----------");}@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {Log.d(TAG, "----------Fragment onCreateView----------");TextView textView = new TextView(getActivity());textView.setText("欢迎来到石头的博客");return textView;}@Overridepublic void onActivityCreated(Bundle savedInstanceState) {super.onActivityCreated(savedInstanceState);Log.d(TAG, "----------Fragment onActivityCreated----------");}@Overridepublic void onStart() {super.onStart();Log.d(TAG, "----------Fragment onStart----------");}@Overridepublic void onResume() {super.onResume();Log.d(TAG, "----------Fragment onResume----------");}@Overridepublic void onPause() {super.onPause();Log.d(TAG, "----------Fragment onPause----------");}@Overridepublic void onStop() {super.onStop();Log.d(TAG, "----------Fragment onStop----------");}@Overridepublic void onDestroyView() {super.onDestroyView();Log.d(TAG, "----------Fragment onDestroyView----------");}@Overridepublic void onDestroy() {super.onDestroy();Log.d(TAG, "----------Fragment onDestroy----------");}@Overridepublic void onDetach() {super.onDetach();Log.d(TAG, "----------Fragment onDetach----------");}}