Fragment与Activity生命周期


官方文档中有详细的文字说明，不过最好还是实践下，熟悉过程。http://developer.android.com/guide/components/fragments.html

一、Activity的生命周期图：



二、Fragment生命周期图



三、对比图



四、测试代码：

package com.goso.testapp;

import android.app.Activity;
import android.app.ListFragment;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;

/**
* Demonstration of using ListFragment to show a list of items
* from a canned array.
*/
public class FragmentListArray extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.e("HJJ", "Activity &&&& onCreate...");
// Create the list fragment and add it as our sole content.
if (getFragmentManager().findFragmentById(android.R.id.content) == null) {
ArrayListFragment list = new ArrayListFragment();
getFragmentManager().beginTransaction().add(android.R.id.content, list).commit();
}
}

@Override
protected void onStart() {
// TODO Auto-generated method stub
super.onStart();
Log.e("HJJ", "Activity &&&& onStart...");
}

@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
Log.e("HJJ", "Activity &&&& onResume...");
}

@Override
protected void onStop() {
// TODO Auto-generated method stub
super.onStop();
Log.e("HJJ", "Activity &&&& onStop...");
}

@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
Log.e("HJJ", "Activity &&&& onPause...");
}

@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
Log.e("HJJ", "Activity &&&& onDestroy...");
}

public static class ArrayListFragment extends ListFragment {

@Override
public void onAttach(Activity activity) {
// TODO Auto-generated method stub
Log.e("HJJ", "ArrayListFragment **** onAttach...");
super.onAttach(activity);
}

@Override
public void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
Log.e("HJJ", "ArrayListFragment **** onCreate...");
super.onCreate(savedInstanceState);
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
Log.e("HJJ", "ArrayListFragment **** onCreateView...");
return super.onCreateView(inflater, container, savedInstanceState);
}

@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
Log.e("HJJ", "ArrayListFragment **** onActivityCreated...");
String[] array = new String[]{"C++", "JAVA", "PYTHON"};
setListAdapter(new ArrayAdapter<String>(getActivity(),
android.R.layout.simple_list_item_1, array));
}

@Override
public void onStart() {
// TODO Auto-generated method stub
Log.e("HJJ", "ArrayListFragment **** onStart...");
super.onStart();
}

@Override
public void onResume() {
Log.e("HJJ", "ArrayListFragment **** onResume...");
// TODO Auto-generated method stub
super.onResume();
}

@Override
public void onPause() {
Log.e("HJJ", "ArrayListFragment **** onPause...");
// TODO Auto-generated method stub
super.onPause();
}

@Override
public void onStop() {
Log.e("HJJ", "ArrayListFragment **** onStop...");
// TODO Auto-generated method stub
super.onStop();
}

@Override
public void onDestroyView() {
Log.e("HJJ", "ArrayListFragment **** onDestroyView...");
// TODO Auto-generated method stub
super.onDestroyView();
}

@Override
public void onDestroy() {
// TODO Auto-generated method stub
Log.e("HJJ", "ArrayListFragment **** onDestroy...");
super.onDestroy();
}

@Override
public void onDetach() {
Log.e("HJJ", "ArrayListFragment **** onDetach...");
// TODO Auto-generated method stub
super.onDetach();
}

@Override
public void onListItemClick(ListView l, View v, int position, long id) {
Log.i("FragmentList", "Item clicked: " + id);
}
}
}