public class GameActivity extends Activity
{
GameView gameview;
private boolean f_Pause = false;
private boolean f_Resume = false;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.game);
/*
MediaPlayer player = MediaPlayer.create(this, R.raw.play);
player.setVolume(0.8f, 0.8f);
player.setLooping(true);
player.start();
*/
}
@Override
public void onDestroy() {
if(f_Pause)
;
else
super.onDestroy();
}
@Override
public void onResume() {
if(f_Pause)
{
f_Pause = false;
gameview.resumeGame();
}
super.onResume();
}
@Override
public void onPause() {
f_Pause = true;
gameview.pauseGame();
super.onPause();
}
static class GameView extends SurfaceView implements Callback, Runnable {
Activity안에 SurfaceView를 두고 코딩중입니다. 이 Activity가 실행되면 gameview가 활성화 되고,
다시 홈버튼이나 뒤로가기를 누르게 될경우 프로그램이 종료되면서
순서대로 onPause() -> onDestroy() 가 발생하게 되는데요.
제가 구현하고 싶은부분은 onPause() 가 호출될때 f_Pause = true로 하여 Pause 상태가 되었다고 표시를 하고,
View에서의 객체에서 pauseGame() 으로 View에서의 스레드를 멈춰주는 메소드를 호출한후에,
Destory()가 호출되면 Activity가 사라지지않고 백그라운드에 두고 다시 게임을 켯을때 Resume 처리를 해주고 싶습니다.
이 방식대로 하게되면 NullPointerError 가 나는데 어떻게 구현해야 할까요?
Log 내역입니다.
11-09 12:39:13.153: ERROR/AndroidRuntime(335): FATAL EXCEPTION: main
11-09 12:39:13.153: ERROR/AndroidRuntime(335): java.lang.RuntimeException: Unable to pause activity {com.android.game/com.android.game.GameActivity}: java.lang.NullPointerException
11-09 12:39:13.153: ERROR/AndroidRuntime(335): at android.app.ActivityThread.performPauseActivity(ActivityThread.java:2329)
11-09 12:39:13.153: ERROR/AndroidRuntime(335): at android.app.ActivityThread.performPauseActivity(ActivityThread.java:2286)
11-09 12:39:13.153: ERROR/AndroidRuntime(335): at android.app.ActivityThread.handlePauseActivity(ActivityThread.java:2266)
11-09 12:39:13.153: ERROR/AndroidRuntime(335): at android.app.ActivityThread.access$1700(ActivityThread.java:117)
11-09 12:39:13.153: ERROR/AndroidRuntime(335): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:939)
11-09 12:39:13.153: ERROR/AndroidRuntime(335): at android.os.Handler.dispatchMessage(Handler.java:99)
11-09 12:39:13.153: ERROR/AndroidRuntime(335): at android.os.Looper.loop(Looper.java:123)
11-09 12:39:13.153: ERROR/AndroidRuntime(335): at android.app.ActivityThread.main(ActivityThread.java:3647)
11-09 12:39:13.153: ERROR/AndroidRuntime(335): at java.lang.reflect.Method.invokeNative(Native Method)
11-09 12:39:13.153: ERROR/AndroidRuntime(335): at java.lang.reflect.Method.invoke(Method.java:507)
11-09 12:39:13.153: ERROR/AndroidRuntime(335): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
11-09 12:39:13.153: ERROR/AndroidRuntime(335): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
11-09 12:39:13.153: ERROR/AndroidRuntime(335): at dalvik.system.NativeStart.main(Native Method)
11-09 12:39:13.153: ERROR/AndroidRuntime(335): Caused by: java.lang.NullPointerException
11-09 12:39:13.153: ERROR/AndroidRuntime(335): at com.android.game.GameActivity.onPause(GameActivity.java:84)
11-09 12:39:13.153: ERROR/AndroidRuntime(335): at android.app.Activity.performPause(Activity.java:3853)
11-09 12:39:13.153: ERROR/AndroidRuntime(335): at android.app.Instrumentation.callActivityOnPause(Instrumentation.java:1190)
11-09 12:39:13.153: ERROR/AndroidRuntime(335): at android.app.ActivityThread.performPauseActivity(ActivityThread.java:2316)