002_ch04_02_LifeCycleTest

1. main.xml
<?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" > <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:gravity="center" android:textSize="30sp" android:text="메인 액티비티" /> <Button android:id="@+id/button01" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginTop="10px" android:text="To 서브 액티비티" /> <Button android:id="@+id/button02" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginTop="10px" android:text="To 얼럿 다이얼로그" /> <Button android:id="@+id/button03" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginTop="10px" android:text="메인 액티비티 종료" /> </LinearLayout>

2. sub.xml
<?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" > <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:gravity="center" android:textSize="30sp" android:text="서브 액티비티" /> <Button android:id="@+id/button04" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginTop="10px" android:text="To 메인 액티비티" /> <Button android:id="@+id/button05" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginTop="10px" android:text="액티비티 종료" /> </LinearLayout>

3. MainActivity.java
package com.tistory.tazz009.lifecycletest; import android.app.Activity; import android.app.AlertDialog; import android.content.DialogInterface; import android.content.Intent; import android.os.Bundle; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; public class MainActivity extends Activity { private final static String TAG = "MainActivity"; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Log.i(TAG, "onCreate()"); setContentView(R.layout.main); final Button b1 = (Button) findViewById(R.id.button01); final Button b2 = (Button) findViewById(R.id.button02); final Button b3 = (Button) findViewById(R.id.button03); b1.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent(MainActivity.this, SubActivity.class); startActivity(intent); } }); b2.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this); builder.setTitle("얼럿(alert) 창"); builder.setMessage("경고메시지가 들어가는 곳"); builder.setNeutralButton( "닫기", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { } } ); builder.show(); } }); b3.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { finish(); } }); } @Override protected void onStart() { Log.i(TAG, "onStart()"); super.onStart(); } @Override protected void onResume() { Log.i(TAG, "onResume()"); super.onResume(); } @Override protected void onRestart() { Log.i(TAG, "onRestart()"); super.onRestart(); } @Override protected void onPause() { Log.i(TAG, "onPause()"); super.onPause(); } @Override protected void onStop() { Log.i(TAG, "onStop()"); super.onStop(); } @Override protected void onDestroy() { Log.i(TAG, "onDestroy()"); super.onDestroy(); } }

4. SubActivity.java
package com.tistory.tazz009.lifecycletest; 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 SubActivity extends Activity { private static final String TAG = "SubActivity"; @Override protected void onCreate(Bundle savedInstanceState) { Log.i(TAG, "onCreate()"); super.onCreate(savedInstanceState); setContentView(R.layout.sub); final Button b4 = (Button) findViewById(R.id.button04); final Button b5 = (Button) findViewById(R.id.button05); b4.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { Intent intent = new Intent(SubActivity.this, MainActivity.class); startActivity(intent); } }); b5.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { finish(); } }); } @Override protected void onStart() { Log.i(TAG, "onStart()"); super.onStart(); } @Override protected void onResume() { Log.i(TAG, "onResume()"); super.onResume(); } @Override protected void onRestart() { Log.i(TAG, "onRestart()"); super.onRestart(); } @Override protected void onPause() { Log.i(TAG, "onPause()"); super.onPause(); } @Override protected void onStop() { Log.i(TAG, "onStop()"); super.onStop(); } @Override protected void onDestroy() { Log.i(TAG, "onDestroy()"); super.onDestroy(); } }

5. AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.tistory.tazz009.lifecycletest" android:versionCode="1" android:versionName="1.0"> <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="SubActivity"></activity> </application> <uses-sdk android:minSdkVersion="8" /> </manifest>