SOAP Web サービス呼び出しを送信するために使用しているサービスがあります。すべてが完璧に機能しており、クラッシュすることはありませんが、そうすべきだと思います。
私の問題は、クエリを長時間実行している場合 (10 ～ 50 秒)、ワーカースレッドが完了する前に onDestroy() が呼び出されることです (そして、stopSelfResult を呼び出します)。LogCat ウィンドウで System.out.println がすぐに実行されないか、同期が取れていない (キャッシュされている) 可能性がありますか?
QueryBase クラスを介してサービスを開始する方法は次のとおりです。
QueryBase someService = new QueryBase(myActivity);
someService.execute(...);
私のQueryBaseクラス
public class QueryBase {
private WeakReference<Activity> currentActivity = null;
private static class ResponseHandler extends Handler {
private QueryBase mQueryBase;
public ResponseHandler(QueryBase vQueryBase) {
mQueryBase = vQueryBase;
};
public void handleMessage(Message message) {
Bundle extras = message.getData();
mQueryBase.handleResult(message.arg1,message.arg2,extras.getInt("FRAMEID"),extras.getString("RESPONSE"));
mQueryBase=null;
};
};
public QueryBase(Activity vActivity) {
currentActivity = new WeakReference<Activity>(vActivity);
}
/***************************************************************************
* Start the service
**************************************************************************/
public boolean execute(Activity vActivity, int cmdID, int frameID, String serverAddress, int requestType, String request) {
// Valid activity
if (vActivity==null) return false;
// Test to see if network is connected
if (!isOnline(vActivity)) return false;
Intent webService = new Intent(vActivity, WebService.class);
final ResponseHandler responseHD = new ResponseHandler(this);
Messenger messenger = new Messenger(responseHD);
webService.putExtra("QUERYRESULT_MESSENGER",messenger);
webService.putExtra("CMDID", cmdID);
webService.putExtra("FRAMEID",frameID);
webService.putExtra("SERVER_ADDRESS",serverAddress);
webService.putExtra("REQUEST_TYPE",requestType);
webService.putExtra("REQUEST",request);
vActivity.startService(webService);
return true;
}
/***************************************************************************
* Is my Android connected?
**************************************************************************/
private Boolean isOnline(Activity vActivity) {
ConnectivityManager connMgr = (ConnectivityManager) vActivity.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
if (networkInfo != null && networkInfo.isConnected()) return true;
else return false;
}
/***************************************************************************
* Get current Activity
**************************************************************************/
public Activity getCurrentActivity() {
Activity ac = currentActivity.get();
if (ac!=null) {
if ((ac.isFinishing()) || (ac.activityDestroyed)) {
return null;
};
}
return ac;
};
/***************************************************************************
* XML result from webservice
**************************************************************************/
public void handleResult(int resultCode, int cmdID, int frameID, String response) {
System.out.println("DEFAULT HANDLER: ResultCode: " + resultCode);
};
}
私の WebService クラス
public class WebService extends Service {
public static final int WS_RT_BLOOSOAP = 0;
public static final int WS_RT_RSS = 1;
public static final int WS_RESULT_OK = 0;
public static final int WS_RESULT_UNABLE_TO_CONNECT = 2;
public static final int WS_RESULT_INVALID_REQUEST = 3;
public static final int WS_RESULT_UNKNOWN_ERROR = 999;
static private SparseBooleanArray workList=null; // Only one job with the same frameID is allowed to run
@Override
public void onCreate() {
System.out.println("#### WebService onCreate");
if (workList==null) workList = new SparseBooleanArray();
}
@Override
public void onDestroy() {
System.out.println("#### WebService onDestroy");
}
/***************************************************************************
* Start working
**************************************************************************/
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
System.out.println("WebService Start ID=" + startId);
final int currentID = startId;
final Intent currentIntent = intent;
Runnable workerRunnable = new Runnable() {
public void run() {
System.out.println("WebService Thread Start - ID=" + currentID);
int resultCode;
Bundle responseExtras = new Bundle();
resultCode = serverRequest(currentIntent,responseExtras);
sendResponse(currentIntent,resultCode,responseExtras);
System.out.println("WebService Thread End - ID=" + currentID);
Bundle extras = currentIntent.getExtras();
if (extras != null) {
int frameID = extras.getInt("FRAMEID");
System.out.println(">>>>>>> PUT FALSE " + frameID);
workList.put(frameID, false);
};
stopSelfResult(currentID);
}
};
if (intent!=null) {
Bundle extras = intent.getExtras();
if (extras != null) {
int frameID = extras.getInt("FRAMEID");
Boolean found = workList.get(frameID,false);
if (!found) {
System.out.println(">>>>>>> PUT TRUE FRAMEID=" + frameID);
workList.put(frameID, true);
Thread workerThread = new Thread(workerRunnable);
workerThread.start();
} else {
System.out.println(">>>>>>> Allready running FRAMEID=" + frameID);
}
};
};
return Service.START_STICKY;
};
/***************************************************************************
* No binding
**************************************************************************/
@Override
public IBinder onBind(Intent intent) {
return null;
}
/***************************************************************************
* Send webservice request and return result in responseExtras
**************************************************************************/
private int serverRequest(Intent intent, Bundle responseExtras) {
...
};
/***************************************************************************
* Send response back to service caller using Messenger.send()
**************************************************************************/
private boolean sendResponse(Intent intent, int resultCode, Bundle responseExtras) {
...
};