关于android的activity和fragment的生命周期

移动开发 2025-04-12 17:18
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1.activity生命周期
 （1）打开A,a-oncreate,a-onstart,a-onresume
 （2）A上按钮打开B,a-onpause,b-oncreate,b-onstart,b-onresume,a-onStop
 （3）B返回A,b-onPause,a-onstart,a-onresume,b-onStop,b-onDestory

2.fragment生命周期
 （1）cActivity中装fragmentA
    cActivity-onCreate,

    fragmentA-onAttach,
    fragmentA-onCreate,
    fragmentA-onCreateView,
    fragmentA-onCreateAnimation,
    fragmentA-onViewCreated,
    fragmentA-onActivityCreated,
    fragmentA-onViewStateRestored,
    fragmentA-onStart,

    cActivity-onStart,    
    cActivity-onResume,

    fragmentA-onResume
 （2）按返回
    fragmentA-onPause,

    cActivity-onPause,

    fragmentA-onStop,

    cActivity-onStop,

    fragmentA-onDestroyView,
    fragmentA-onDestroy,
    fragmentA-onDetach,

    Activity-onDestroy
 （3）若在fragmentA打开fragmentB
    AFragment--onPause
    AFragment--onStop
    AFragment--onDestroyView
    AFragment--onCreateAnimation

    BFragment--onAttach
    BFragment--onCreate
    BFragment--onCreateView
    BFragment--onCreateAnimation
    BFragment--onViewCreated
    BFragment--onActivityCreated
    BFragment--onViewStateRestored
    BFragment--onStart
    BFragment--onResume
 （4）按返回
    BFragment--onPause
    BFragment--onStop
    BFragment--onDestroyView
    BFragment--onCreateAnimation
    BFragment--onDestroy
    BFragment--onDetach

    AFragment--onCreateView
    AFragment--onCreateAnimation
    AFragment--onViewCreated
    AFragment--onActivityCreated
    AFragment--onViewStateRestored
    AFragment--onStart
    AFragment--onResume
 （5）若在fragmentA中打开activityA
    AFragment--onPause

    CActivity--onPause

    AActivity--onCreate
    AActivity--onStart
    AActivity--onResume

    AFragment--onSaveInstanceState
    AFragment--onStop

    CActivity--onStop
 （6）按返回
    AActivity--onPause

    AFragment--onStart

    CActivity--onStart
    CActivity--onResume

    AFragment--onResume

    AActivity--onStop
    AActivity--onDestroy
 （7）若在fragmentA中打开activityA，并finsh掉activityC
    AFragment-- onPause

    CActivity-- onPause

    AActivity-- onCreate
    AActivity-- onStart
    AActivity-- onResume

    AFragment-- onStop

    CActivity-- onStop

    AFragment-- onDestroyView
    AFragment-- onDestroy
    AFragment-- onDetach

    CActivity-- onDestroy

具体的代码，如下

/**
 * @author jiagf @email [email protected]
 * @date 2015-2-4
 * @version 0.2 
 * @description 
 */
package com.jia.demo.activity.life;

import com.jia.demo.R;
import com.jia.demo.activity.BaseActivity;
import com.jia.demo.util.LogUtil;

import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;

/**
 * @author Mars
 *
 */
public class AActivity extends BaseActivity {
	
	private String TAG = this.getClass().getSimpleName();
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_a);
		
		this.findViewById(R.id.a_btn).setOnClickListener(click_listener);
		LogUtil.e(TAG, "onCreate");
	}
	
	OnClickListener click_listener = new OnClickListener() {
		
		@Override
		public void onClick(View v) {
			startActvity(getApplicationContext(), BActivity.class);
			
		}
	};
	
	@Override
	protected void onStart() {
		super.onStart();
		LogUtil.e(TAG, "onStart");
	}
	
	@Override
	protected void onResume() {
		super.onResume();
		LogUtil.e(TAG, "onResume");
	}
	
	
	@Override
	protected void onPause() {
		super.onPause();
		LogUtil.e(TAG, "onPause");
	}
	
	@Override
	protected void onStop() {
		super.onStop();
		LogUtil.e(TAG, "onStop");
	}
	
	@Override
	protected void onDestroy() {
		super.onDestroy();
		LogUtil.e(TAG, "onDestroy");
	}
}

/**
 * @author jiagf @email [email protected]
 * @date 2015-2-4
 * @version 0.2 
 * @description 
 */
package com.jia.demo.activity.life;

import com.jia.demo.R;
import com.jia.demo.activity.BaseActivity;
import com.jia.demo.util.LogUtil;

import android.os.Bundle;

/**
 * @author Mars
 *
 */
public class BActivity extends BaseActivity {
	
	private String TAG = this.getClass().getSimpleName();
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_b);
		LogUtil.e(TAG, "onCreate");
	}
	
	@Override
	protected void onStart() {
		super.onStart();
		LogUtil.e(TAG, "onStart");
	}
	
	@Override
	protected void onResume() {
		super.onResume();
		LogUtil.e(TAG, "onResume");
	}
	
	
	@Override
	protected void onPause() {
		super.onPause();
		LogUtil.e(TAG, "onPause");
	}
	
	@Override
	protected void onStop() {
		super.onStop();
		LogUtil.e(TAG, "onStop");
	}
	
	@Override
	protected void onDestroy() {
		super.onDestroy();
		LogUtil.e(TAG, "onDestroy");
	}
}

/**
 * @author jiagf @email [email protected]
 * @date 2015-2-4
 * @version 0.2 
 * @description 
 */
package com.jia.demo.activity.life;

import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.view.View;
import android.view.View.OnClickListener;

import com.jia.demo.R;
import com.jia.demo.fragment.life.AFragment;
import com.jia.demo.util.LogUtil;

/**
 * @author Mars
 *
 */
public class CActivity extends FragmentActivity {
	
	private String TAG = this.getClass().getSimpleName();
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_c);
		
		AFragment fragment = new AFragment();
		FragmentManager fragmentManager = getSupportFragmentManager();
		FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
		fragmentTransaction.add(R.id.nav_content_fragment,fragment);
		fragmentTransaction.commit();
		
		LogUtil.e(TAG, "onCreate");
	}
	
	OnClickListener click_listener = new OnClickListener() {
		
		@Override
		public void onClick(View v) {
			
		}
	};
	
	@Override
	protected void onStart() {
		super.onStart();
		LogUtil.e(TAG, "onStart");
	}
	
	@Override
	protected void onResume() {
		super.onResume();
		LogUtil.e(TAG, "onResume");
	}
	
	
	@Override
	protected void onPause() {
		super.onPause();
		LogUtil.e(TAG, "onPause");
	}
	
	@Override
	protected void onStop() {
		super.onStop();
		LogUtil.e(TAG, "onStop");
	}
	
	@Override
	protected void onDestroy() {
		super.onDestroy();
		LogUtil.e(TAG, "onDestroy");
	}
}

/**
 * @author jiagf @email [email protected]
 * @date 2015-2-4
 * @version 0.2 
 * @description 
 */
package com.jia.demo.fragment.life;

import android.app.Activity;
import android.content.Intent;
import android.content.res.Configuration;
import android.os.Bundle;
import android.util.AttributeSet;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.animation.Animation;

import com.jia.demo.R;
import com.jia.demo.activity.life.AActivity;
import com.jia.demo.fragment.BaseFragment;
import com.jia.demo.util.LogUtil;



public class AFragment extends BaseFragment {
	
	private String TAG = this.getClass().getSimpleName();
	
	private View root;
	 // 标志位，标志已经初始化完成。  
    private boolean isPrepared;
	
	@Override
	public void onActivityCreated(Bundle savedInstanceState) {
		super.onActivityCreated(savedInstanceState);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onAttach(Activity activity) {
		super.onAttach(activity);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onDestroy() {
		super.onDestroy();
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onDetach() {
		super.onDetach();
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	
	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
		root = inflater.inflate(R.layout.fragment_a, container, false);
		isPrepared = true;  
        lazyLoad();  
		return root;
		
		
	}
	
	@Override
	public void onHiddenChanged(boolean hidden) {
		super.onHiddenChanged(hidden);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onDestroyView() {
		super.onDestroyView();
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onConfigurationChanged(Configuration newConfig) {
		super.onConfigurationChanged(newConfig);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onPause() {
		super.onPause();
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onResume() {
		super.onResume();
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onStart() {
		super.onStart();
		setTitleName("A");
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onStop() {
		super.onStop();
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onViewCreated(View view, Bundle savedInstanceState) {
		super.onViewCreated(view, savedInstanceState);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onLowMemory() {
		super.onLowMemory();
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onSaveInstanceState(Bundle outState) {
		super.onSaveInstanceState(outState);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onViewStateRestored(Bundle savedInstanceState) {
		super.onViewStateRestored(savedInstanceState);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onInflate(Activity activity, AttributeSet attrs,
			Bundle savedInstanceState) {
		super.onInflate(activity, attrs, savedInstanceState);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public boolean onContextItemSelected(MenuItem item) {
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
		return super.onContextItemSelected(item);
		
	}
	
	@Override
	public void onActivityResult(int requestCode, int resultCode, Intent data) {
		super.onActivityResult(requestCode, resultCode, data);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public Animation onCreateAnimation(int transit, boolean enter, int nextAnim) {
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
		return super.onCreateAnimation(transit, enter, nextAnim);
	}
	
	@Override
	public void onCreateContextMenu(ContextMenu menu, View v,
			ContextMenuInfo menuInfo) {
		super.onCreateContextMenu(menu, v, menuInfo);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
		super.onCreateOptionsMenu(menu, inflater);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onDestroyOptionsMenu() {
		super.onDestroyOptionsMenu();
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
		return super.onOptionsItemSelected(item);
	}
	
	@Override
	public void onOptionsMenuClosed(Menu menu) {
		super.onOptionsMenuClosed(menu);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onPrepareOptionsMenu(Menu menu) {
		super.onPrepareOptionsMenu(menu);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}

	@Override
	protected void lazyLoad() {
		LogUtil.e(TAG,"isPrepared:"+isPrepared+",isVisible:"+isVisible);
//		if(!isPrepared || !isVisible) {  
//            return;  
//        }  
       
		//填充各控件的数据
		 root.findViewById(R.id.fragment_a_btn).setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
//				startFragment(R.id.nav_content_fragment, new BFragment(), "bFragment");
				startActvity(getActivity(), AActivity.class);
				getActivity().finish();
			}
		});
		
	}
	 
}

/**
 * @author jiagf @email [email protected]
 * @date 2015-2-4
 * @version 0.2 
 * @description 
 */
package com.jia.demo.fragment.life;

import android.app.Activity;
import android.content.Intent;
import android.content.res.Configuration;
import android.os.Bundle;
import android.util.AttributeSet;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.widget.Button;

import com.jia.demo.R;
import com.jia.demo.fragment.BaseFragment;
import com.jia.demo.util.LogUtil;



public class BFragment extends BaseFragment {
	
	private String TAG = this.getClass().getSimpleName();
	
	private View root;
	 // 标志位，标志已经初始化完成。  
    private boolean isPrepared;
	
    @Override
	public void onActivityCreated(Bundle savedInstanceState) {
		super.onActivityCreated(savedInstanceState);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onAttach(Activity activity) {
		super.onAttach(activity);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onDestroy() {
		super.onDestroy();
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onDetach() {
		super.onDetach();
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	
	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
		root = inflater.inflate(R.layout.fragment_a, container, false);
		isPrepared = true;  
        lazyLoad();  
		return root;
		
		
	}
	
	@Override
	public void onHiddenChanged(boolean hidden) {
		super.onHiddenChanged(hidden);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onDestroyView() {
		super.onDestroyView();
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onConfigurationChanged(Configuration newConfig) {
		super.onConfigurationChanged(newConfig);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onPause() {
		super.onPause();
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onResume() {
		super.onResume();
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onStart() {
		super.onStart();
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onStop() {
		super.onStop();
		setTitleName("B");
		showReturnButton(true);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onViewCreated(View view, Bundle savedInstanceState) {
		super.onViewCreated(view, savedInstanceState);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onLowMemory() {
		super.onLowMemory();
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onSaveInstanceState(Bundle outState) {
		super.onSaveInstanceState(outState);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onViewStateRestored(Bundle savedInstanceState) {
		super.onViewStateRestored(savedInstanceState);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onInflate(Activity activity, AttributeSet attrs,
			Bundle savedInstanceState) {
		super.onInflate(activity, attrs, savedInstanceState);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public boolean onContextItemSelected(MenuItem item) {
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
		return super.onContextItemSelected(item);
		
	}
	
	@Override
	public void onActivityResult(int requestCode, int resultCode, Intent data) {
		super.onActivityResult(requestCode, resultCode, data);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public Animation onCreateAnimation(int transit, boolean enter, int nextAnim) {
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
		return super.onCreateAnimation(transit, enter, nextAnim);
	}
	
	@Override
	public void onCreateContextMenu(ContextMenu menu, View v,
			ContextMenuInfo menuInfo) {
		super.onCreateContextMenu(menu, v, menuInfo);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
		super.onCreateOptionsMenu(menu, inflater);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onDestroyOptionsMenu() {
		super.onDestroyOptionsMenu();
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
		return super.onOptionsItemSelected(item);
	}
	
	@Override
	public void onOptionsMenuClosed(Menu menu) {
		super.onOptionsMenuClosed(menu);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	public void onPrepareOptionsMenu(Menu menu) {
		super.onPrepareOptionsMenu(menu);
		LogUtil.e(TAG, Thread.currentThread().getStackTrace()[2].getMethodName());
	}
	
	@Override
	protected void lazyLoad() {
		LogUtil.e(TAG,"isPrepared:"+isPrepared+",isVisible:"+isVisible);
//		if(!isPrepared || !isVisible) {  
//            return;  
//        }  
		setTitleName("B");
		//填充各控件的数据
		Button a =(Button)root.findViewById(R.id.fragment_a_btn);
		a.setText(getActivity().getResources().getString(R.string.ipsum));
	}
	 
}

<ScrollView 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"
    android:fitsSystemWindows="true"
    android:clipToPadding="false" >

    
    <Button
        android:id="@+id/a_btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="16dp"
        android:textSize="18sp"
        android:text="@string/click" />

</ScrollView>

<ScrollView 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"
    android:fitsSystemWindows="true"
    android:clipToPadding="false" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="16dp"
        android:textSize="18sp"
        android:text="@string/ipsum" />
    
    

</ScrollView>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:paddingTop="80dp"
    android:orientation="vertical" >

    

    <FrameLayout
        android:id="@+id/nav_content_fragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</RelativeLayout>
<ScrollView 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"
    android:fitsSystemWindows="true"
    android:clipToPadding="false" >

    
    <Button
        android:id="@+id/fragment_a_btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="16dp"
        android:textSize="18sp"
        android:text="点击" />

</ScrollView>

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