current revision

sensors/android/WiFiSensorAndroid.h

@@ -16,6 +16,8 @@ private:
 	/** hidden ctor. use singleton! */
 	WiFiSensorAndroid() {;}
 
+	bool started = false;
+
 public:
 
 	/** singleton access */
@@ -28,7 +30,8 @@ public:
 
 		// start scanning
 		int res = QAndroidJniObject::callStaticMethod<int>("indoor/java/WiFi", "start", "()I");
-		(void) res;
+		if (res != 0) {throw Exception("error while starting WiFi");}
+		started = true;
 
 	}
 
@@ -36,8 +39,12 @@ public:
 		throw "todo";
 	}
 
+	bool isRunning() const override {
+		return started;
+	}
+
 	/** called from java. handle the given incoming scan result */
-	void handle(const std::string& data) {
+	void handle(const std::string data) {
 
 		// to-be-constructed sensor data
 		WiFiMeasurements sensorData;