public void onCreate(Bundle savedInstanceState) ; 
public void onDestroy(); 
public void onPause(); 
public void onRestart(); 
public void onResume(); 
public void onStart(); 
public void onStop(); 

<?xml version="1.0" encoding="utf-8"?> 
<resources> 
 <string name="hello">Hello World, MainActivity!</string> 
 <string name="app_name">Activity生命周期</string> 
 <string name="other">另外一个Activity</string> 
 <string name="start">启动另一个Activity</string> 
 <string name="stop">结束当前Activity</string> 
</resources> 

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
 android:orientation="vertical" 
 android:layout_width="fill_parent" 
 android:layout_height="fill_parent" 
 > 
 <Button 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content" 
  android:text="@string/start" 
  android:id="@+id/start" 
  /> 
 <Button 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content" 
  android:text="@string/stop" 
  android:id="@+id/stop" 
  /> 
</LinearLayout> 

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
  package="com.shun.android" 
  android:versionCode="1" 
  android:versionName="1.0"> 
 <uses-sdk android:minSdkVersion="7" /> 
 
 <application android:icon="@drawable/icon" android:label="@string/app_name"> 
  <activity android:name=".MainActivity" 
     android:label="@string/app_name"> 
   <intent-filter> 
    <action android:name="android.intent.action.MAIN" /> 
    <category android:name="android.intent.category.LAUNCHER" /> 
   </intent-filter> 
  </activity> 
   
  <activity android:name=".OtherActivity" 
     android:label="@string/other"> 
   <intent-filter> 
    <action android:name="android.intent.action.MAIN" /> 
    <category android:name="android.intent.category.LAUNCHER" /> 
   </intent-filter> 
  </activity> 
 
 </application> 
</manifest> 

package com.shun.android; 
 
import android.app.Activity; 
import android.content.Intent; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.View; 
import android.widget.Button; 
 
public class MainActivity extends Activity { 
 private static final String TAG = "MainActivity"; 
 @Override 
 public void onCreate(Bundle savedInstanceState) { 
  super.onCreate(savedInstanceState); 
  setContentView(R.layout.main); 
   
  Log.i(TAG,"onCreate"); 
   
  Button start = (Button)findViewById(R.id.start); 
  start.setOnClickListener(new View.OnClickListener() { 
    
   public void onClick(View v) { 
    Intent intent = new Intent(MainActivity.this,OtherActivity.class); 
    startActivity(intent); 
    MainActivity.this.finish(); 
   } 
  }); 
   
  Button stop = (Button)findViewById(R.id.stop); 
  stop.setOnClickListener(new View.OnClickListener() { 
    
   public void onClick(View v) { 
    MainActivity.this.finish(); 
   } 
  }); 
   
 } 
  
 protected void onDestroy(){ 
  Log.i(TAG,"onDestroy"); 
  super.onDestroy(); 
 } 
  
 protected void onPause(){ 
  Log.i(TAG,"onPause"); 
  super.onPause(); 
 } 
  
 protected void onRestart(){ 
  Log.i(TAG,"onRestart"); 
  super.onRestart(); 
 } 
  
 protected void onResume(){ 
  Log.i(TAG,"onResume"); 
  super.onResume(); 
 } 
  
 protected void onStart(){ 
  Log.i(TAG,"onStart"); 
  super.onStart(); 
 } 
  
 protected void onStop(){ 
  Log.i(TAG,"onStop"); 
  super.onStop(); 
 } 
} 

package com.shun.android; 
 
import android.app.Activity; 
import android.content.Intent; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.View; 
import android.widget.Button; 
 
public class OtherActivity extends Activity{ 
 
 private static final String TAG = "OtherActivity"; 
 @Override 
 public void onCreate(Bundle savedInstanceState) { 
  super.onCreate(savedInstanceState); 
  setContentView(R.layout.main); 
   
  Log.i(TAG,"onCreate"); 
   
  Button start = (Button)findViewById(R.id.start); 
  start.setOnClickListener(new View.OnClickListener() { 
    
   public void onClick(View v) { 
    Intent intent = new Intent(OtherActivity.this,MainActivity.class); 
    startActivity(intent); 
    OtherActivity.this.finish(); 
   } 
  }); 
   
  Button stop = (Button)findViewById(R.id.stop); 
  stop.setOnClickListener(new View.OnClickListener() { 
    
   public void onClick(View v) { 
    OtherActivity.this.finish(); 
   } 
  }); 
   
 } 
  
 protected void onDestroy(){ 
  Log.i(TAG,"onDestroy"); 
  super.onDestroy(); 
 } 
  
 protected void onPause(){ 
  Log.i(TAG,"onPause"); 
  super.onPause(); 
 } 
  
 protected void onRestart(){ 
  Log.i(TAG,"onRestart"); 
  super.onRestart(); 
 } 
  
 protected void onResume(){ 
  Log.i(TAG,"onResume"); 
  super.onResume(); 
 } 
  
 protected void onStart(){ 
  Log.i(TAG,"onStart"); 
  super.onStart(); 
 } 
  
 protected void onStop(){ 
  Log.i(TAG,"onStop"); 
  super.onStop(); 
 } 
  
} 

start.setOnClickListener(new View.OnClickListener() { 
    
   public void onClick(View v) { 
    MainActivity.this.finish(); 
    Intent intent = new Intent(MainActivity.this,OtherActivity.class); 
    startActivity(intent); 
   } 
  }); 

Button start = (Button)findViewById(R.id.start); 
  start.setOnClickListener(new View.OnClickListener() { 
    
   public void onClick(View v) { 
    OtherActivity.this.finish(); 
   } 
  }); 
 MainActivity如下：
Button start = (Button)findViewById(R.id.start); 
  start.setOnClickListener(new View.OnClickListener() { 
    
   public void onClick(View v) { 
    Intent intent = new Intent(MainActivity.this,OtherActivity.class); 
    startActivity(intent); 
   } 
  }); 

<activity android:name=".OtherActivity" 
     android:label="@string/other" 
     android:theme="@android:style/Theme.Dialog"> 
  </activity> 

Button start = (Button)findViewById(R.id.start); 
  start.setOnClickListener(new View.OnClickListener() { 
    
   public void onClick(View v) { 
    Intent intent = new Intent(MainActivity.this,OtherActivity.class); 
    startActivity(intent); 
   } 
  }); 

Button start = (Button)findViewById(R.id.start); 
  start.setOnClickListener(new View.OnClickListener() { 
    
   public void onClick(View v) { 
    OtherActivity.this.finish(); 
   } 
  });