After unsuccessful attempts to find what is the problem with my IntentService, (reading and googling) I decide to ask at stakeoverflow. I couldn't figure our what is wrong with this code. I actually want to start a service after receiving result from another activity. I do get result from that activity then comes to the method from where i want to start this service.
Service Starter Code
Intent templateCreationIntent = new Intent(getApplicationContext(), TemplateCreationService.class);
templateCreationIntent.putExtra(TemplateCreationService.PARAM_IN_MSG,userName);
startService(templateCreationIntent);
Service Code
public class TemplateCreationService extends IntentService{
private static final String TAG = "TemplateCreationService";
public static final int STATUS_RUNNING = 0;
public static final int STATUS_FINISHED = 1;
public static final int STATUS_ERROR = 2;
static final String TEST_RAW_DATA_PATH = Environment.getExternalStorageDirectory() +"/gaitDataRecording"+ "/rawTestingData" + "/acc/";
public static String userName;
public static String cycleLength;
public static final String PARAM_OUT_MSG = "omsg";
public static final String PARAM_IN_MSG = "imsg";
public TemplateCreationService() {
super(TemplateCreationService.class.getName());
// TODO Auto-generated constructor stub
}
#Override
protected void onHandleIntent(Intent intent) {
// TODO Auto-generated method stub
Log.d(TAG,"Template Creation Service Started");
userName = intent.getStringExtra(PARAM_IN_MSG);
try {
Boolean b = DataProcessingStepsV2.gaitDataLoading(TRAIN_RAW_DATA_PATH, userName);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
double []gaitCycleLengths = DataProcessingStepsV2.getCycleLengths();
cycleLength = gaitCycleLengths.toString();
// processing done here….
Intent broadcastIntent = new Intent();
broadcastIntent.setAction(ResponseReceiver.ACTION_RESP);
broadcastIntent.addCategory(Intent.CATEGORY_DEFAULT);
broadcastIntent.putExtra(PARAM_OUT_MSG,cycleLength);
sendBroadcast(broadcastIntent);
}
}
Manifest
<service android:name=".gait_authentication_segmentation.TemplateCreationService"
android:exported = "false"/>
Main Activity Registering Receiver
IntentFilter filter = new IntentFilter(ResponseReceiver.ACTION_RESP);
filter.addCategory(Intent.CATEGORY_DEFAULT);
receiver = new ResponseReceiver();
registerReceiver(receiver, filter);
Broadcast Receiver
public class ResponseReceiver extends BroadcastReceiver {
public static final String ACTION_RESP =
"at.usmile.gait_authentication.intent.action.MESSAGE_PROCESSED";
#Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(getApplicationContext(), intent.getStringExtra(TemplateCreationService.PARAM_OUT_MSG),Toast.LENGTH_LONG).show();
//String text = intent.getStringExtra(SimpleIntentService.PARAM_OUT_MSG);
//result.setText(text);
}
}
I think the name of Service in the AndroidManifest.xml is not correct. It can be:
It is not the fully qualified name.
There is some spelling mistake.
Try giving full package name with the service name and give it a try.
Related
I'm trying to send a value to the server when the connection doesn't exist, when it connects to the internet it runs fine and is saved to the server and sqlite. but the problem arises when switching state from offline to online. I send one value to the server when the connection is offline but when the state moves to online the value I sent earlier becomes multiple on the server while in the sqlite database only one value is stored.
this is my network state checker class
public class NetworkStateCheckerNama extends BroadcastReceiver {
//context and database helper object
private Context context;
private Database db;
ApiRequestData apiRequestData;
#Override
public void onReceive(Context context, Intent intent) {
this.context = context;
apiRequestData = ServiceGenerator.createBaseService(this.context, ApiRequestData.class);
db = new Database(context);
ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
//if there is a network
if (activeNetwork != null) {
//if connected to wifi or mobile data plan
if (activeNetwork.getType() == ConnectivityManager.TYPE_WIFI || activeNetwork.getType() == ConnectivityManager.TYPE_MOBILE) {
//getting all the unsynced user
Cursor cursor2 = db.getUnsyncedNama();
if (cursor2.moveToFirst()) {
do {
//calling the method to save the unsynced name to MySQL
Nama(
cursor2.getString(cursor2.getColumnIndexOrThrow(Database.KOLOM_NAMA_COBA)),
cursor2.getString(cursor2.getColumnIndexOrThrow(Database.KOLOM_NIP_COBA))
);
} while (cursor2.moveToNext());
}
}
}
}
private void Nama(final String nama,final String nip) {
//Call call = retrofit.create(APIInterface.class).saveName(name);
Call call = apiRequestData.nama_query(nama,nip);
call.enqueue(new Callback<Responses>() {
#Override
public void onResponse(Call<Responses> call, Response<Responses> response) {
if (response.code() == 200){
db.updateNamaStatus(nip, MainActivity.NAME_SYNCED_WITH_SERVER);
//sending the broadcast to refresh the list
context.sendBroadcast(new Intent(MainActivity.DATA_SAVED_BROADCAST_MAIN));
}
}
#Override
public void onFailure(Call<Responses> call, Throwable t) {
}
});
}
this is my MainActivity Class
public class MainActivity extends AppCompatActivity {
Session session;
Button buttonLogout,buttonKirim;
TextView textViewNamaMain, textViewNipMain;
EditText editTextNamaMain;
Database database;
private AdapterNama mAdapter;
private RecyclerView listviewNama;
ApiRequestData apiRequestData;
//1 means data is synced and 0 means data is not synced
public static final int NAME_SYNCED_WITH_SERVER = 1;
public static final int NAME_NOT_SYNCED_WITH_SERVER = 0;
//a broadcast to know weather the data is synced or not
public static final String DATA_SAVED_BROADCAST_MAIN = "com.example.myapplication.datasave2";
ArrayList<Nama> namaArray;
ArrayList<User> users;
BroadcastReceiver broadcastReceiver;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
session = new Session(this);
buttonLogout = findViewById(R.id.buttonLogout);
buttonKirim = findViewById(R.id.buttonKirim);
textViewNipMain = findViewById(R.id.textViewNipMain);
textViewNamaMain = findViewById(R.id.textViewNamaMain);
editTextNamaMain = findViewById(R.id.editTextTextNamaMain);
String nip = getIntent().getStringExtra("nip");
listviewNama = findViewById(R.id.lv_nama);
RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(this);
listviewNama.setLayoutManager(layoutManager);
listviewNama.setItemAnimator(new DefaultItemAnimator());
database = new Database(this);
namaArray = new ArrayList<>();
users = new ArrayList<>();
apiRequestData = ServiceGenerator.createBaseService(this, ApiRequestData.class);
textViewNipMain.setText(nip);
registerReceiver(new NetworkStateCheckerNama(), new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION));
loadDaftarNama(nip);
broadcastReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
//loading the names again
loadDaftarNama(nip);
}
};
registerReceiver(broadcastReceiver, new IntentFilter(DATA_SAVED_BROADCAST_MAIN));
if(!session.isUserLogin()){
logout();
}
buttonKirim.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
SimpanKeServer();
}
});
buttonLogout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
logout();
}
});
users.clear();
Cursor cursor = database.getUsersWhereNip(nip);
if (cursor.moveToFirst()) {
do {
User user = new User(
cursor.getString(cursor.getColumnIndexOrThrow(Database.KOLOM_NIP)),
cursor.getString(cursor.getColumnIndexOrThrow(Database.KOLOM_NAMA)),
cursor.getString(cursor.getColumnIndexOrThrow(Database.KOLOM_PASSWORD)),
cursor.getInt(cursor.getColumnIndexOrThrow(Database.KOLOM_STATUS))
);
users.add(user);
textViewNamaMain.setText(user.getNama());
} while (cursor.moveToNext());
}
}
private void SimpanKeServer(){
final ProgressDialog progressDialog = new ProgressDialog(this);
progressDialog.setMessage("Saving Name...");
progressDialog.show();
String nama = editTextNamaMain.getText().toString();
String nip = textViewNipMain.getText().toString();
Call call = apiRequestData.nama_query(nama,nip);
call.enqueue(new Callback<Responses>() {
#Override
public void onResponse(Call<Responses> call, Response<Responses> response) {
progressDialog.dismiss();
if(response.code() == 200){
//if there is a success
//storing the name to sqlite with status synced
SaveNamaToLocal(nama,nip,NAME_SYNCED_WITH_SERVER);
Toast.makeText(MainActivity.this, "Berhasil", Toast.LENGTH_SHORT).show();
}else {
progressDialog.dismiss();
//if there is some error
//saving the name to sqlite with status unsynced
SaveNamaToLocal(nama,nip,NAME_NOT_SYNCED_WITH_SERVER);
Toast.makeText(MainActivity.this, "Gagal", Toast.LENGTH_SHORT).show();
}
}
#Override
public void onFailure(Call<Responses> call, Throwable t) {
progressDialog.dismiss();
SaveNamaToLocal(nama,nip,NAME_NOT_SYNCED_WITH_SERVER);
Toast.makeText(MainActivity.this, "Gagal", Toast.LENGTH_SHORT).show();
}
});
}
private void SaveNamaToLocal(String nama, String nip, int status){
database.Nama(nama,nip,status);
Nama namas = new Nama(nama,nip,status);
namaArray.add(namas);
refreshList();
}
private void loadDaftarNama(String nip) {
namaArray.clear();
Cursor cursor = database.getNama(nip);
if (cursor.moveToFirst()) {
do {
Nama nama = new Nama(
cursor.getString(cursor.getColumnIndexOrThrow(Database.KOLOM_NAMA_COBA)),
cursor.getString(cursor.getColumnIndexOrThrow(Database.KOLOM_NIP_COBA)),
cursor.getInt(cursor.getColumnIndexOrThrow(Database.KOLOM_STATUS_NAMA_COBA))
);
namaArray.add(nama);
} while (cursor.moveToNext());
}
mAdapter = new AdapterNama(this, namaArray);
listviewNama.setAdapter(mAdapter);
}
#SuppressLint("NotifyDataSetChanged")
private void refreshList() {
mAdapter.notifyDataSetChanged();
}
private void logout(){
session.updateUserLoginStatus(false);
finish();
startActivity(new Intent(MainActivity.this,LoginActivity.class));
}
}
this when online
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this the problem when state internet switch from offline to online
enter image description here
enter image description here
Even in server send 3 same values
I'm sorry for my english and my question structure im new in programmer, and thank you for the answer
i am getting
StartSensor Attempt to invoke virtual method 'void io.realm.ProxyState.setConstructionFinished()' on a null object reference
i try to create a new object with primarykey inside application class.
primarykeyFactory works it set the new key to "1" the database is empty at this moment.
public class SensorRecord extends MainApplication {
private final static String TAG = SensorRecord.class.getSimpleName();
private Realm mRealm;
public SensorRecord() {
Realm.init(this);
mRealm = getInstance(getRealmConfig());
}
public void StartSensor(long startTime) {
long newprimekey = PrimaryKeyFactory.getInstance().nextKey(SensorData.class);
try {
mRealm.beginTransaction();
SensorData mSensorData = mRealm.createObject(SensorData.class, newprimekey);
mSensorData.setstarted_at(startTime);
mRealm.commitTransaction();
mRealm.close();
} catch (Exception e) {
Log.v(TAG, "StartSensor " + e.getMessage());
}
}}
my main application class which init the realm config
public class MainApplication extends RealmBaseApplication {
private final static String TAG = MainApplication.class.getSimpleName();
Realm mRealm;
#Override
public void onCreate() {
super.onCreate();
Realm.init(this);
mRealm = getInstance(getRealmConfig());
initializePrimaryKeyFactory();
}
public void initializePrimaryKeyFactory() {
try {
Log.v(TAG, "Start PrimaryKeyFactory ");
PrimaryKeyFactory.getInstance().initialize(mRealm);
} catch (Exception e) {
Log.v(TAG, "initializePrimaryKeyFactory " + e.getMessage());
}
}}
and my realm config class
public abstract class RealmBaseApplication extends Application {
private RealmConfiguration realmConfiguration;
protected RealmConfiguration getRealmConfig() {
if (realmConfiguration == null) {
realmConfiguration = new RealmConfiguration
.Builder()
.deleteRealmIfMigrationNeeded()
.build();
}
Realm.setDefaultConfiguration(realmConfiguration);
return realmConfiguration;
}
protected void resetRealm() {
Realm.deleteRealm(getRealmConfig());
}}
kind regards
viktoria
ok fixed by myself. had add butterknife tonight. and with that i add apt to my build.gradle... i removed
classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
apply plugin: 'com.neenbedankt.android-apt'
and replaced
apt 'com.jakewharton:butterknife-compiler:8.5.1'
with
annotationProcessor 'com.jakewharton:butterknife-compiler:8.5.1'
I have a huge MS Access database file (aprrox. 1gb) and about 5 different GUI (FXML). Each fxml contains data from different tables. I am using ucanaccess to connect with database. Now I am having problem in connecting with database. I never get connection. It works fine with smaller database file. I am using service and task for background thread. Could someone tell me what can be the best approach to overcome this problem.
private Service backgroundService;
private Connection ucaConn;
#FXML
private void handleButtonAction(ActionEvent event) {
backgroundService = new Service() {
#Override
protected Task createTask() {
return new Task() {
#Override
protected Object call() throws Exception {
try {
ucaConn = getUcanaccessConnection(DataCarrier.getInstance().getDatabaseLocation());
} catch (SQLException | IOException ex) {
Logger.getLogger(HomeController.class.getName()).log(Level.SEVERE, null, ex);
}
return null;
}
};
}
};
backgroundService.setOnSucceeded(new EventHandler<WorkerStateEvent>() {
#Override
public void handle(WorkerStateEvent event) {
System.out.println("Done");
errorMessage.textProperty().unbind();
String timeStamp = new SimpleDateFormat("mm:ss").format(Calendar.getInstance().getTime());
System.out.println("End time: " + timeStamp);
}
});
errorMessage.textProperty().bind(backgroundService.messageProperty());
backgroundService.restart();
}
}
}
private static Connection getUcanaccessConnection(String pathNewDB) throws SQLException,
IOException {
String url = UcanaccessDriver.URL_PREFIX + pathNewDB + ";newDatabaseVersion=V2003";
return DriverManager.getConnection(url, "sa", "");
}
I've found several examples on how to pipe and redirect messages from System.out and System.err.
Having decided to develop an application using the JavaFX Webview and Dukescript, I've found useful having one place where to display all messages, i.e. the Firebug Lite console.
See below.
PS This is the exact opposite as this
First define an abstract class
public abstract class FirebugConsole extends OutputStream {
abstract void log( String msg );
StringBuilder sb = new StringBuilder();
#Override
public void write(int i) {
sb.append((char)i);
}
#Override
public void flush() {
if( sb.length() >0 && !sb.toString().equals("\r\n"))
log(sb.toString());
sb = new StringBuilder();
}
}
Then extend it with methods that implement native calls into JavaScript. Here's for example how to write log messages
public class FirebugConsoleInfo extends FirebugConsole{
#net.java.html.js.JavaScriptBody(args = { "msg" }, body = ""
+ "Firebug.Console.log(msg);")
public native void log( String msg );
}
Finally, pipe System.out and System.err to those objects
public static void onPageLoad() throws Exception {
...
System.setOut(new PrintStream(new FirebugConsoleInfo(), true));
System.setErr(new PrintStream(new FirebugConsoleError(), true));
...
}
Note: for some reasons the usual console.log() doesn't work for me, I know Firebug doesn't bind a console if a console object is already present, so I suspect the WebFX webview must itself pipe console.log messages to System.out in the first place.
Update
The solution above doesn't work when the messages are generated by a thread other than the browser's. Here's an updated solution based on BrwsrCtx.execute()
public abstract static class FirebugConsole extends OutputStream {
protected final BrwsrCtx ctx;
public FirebugConsole( BrwsrCtx ctx ){
this.ctx = ctx;
}
abstract void logNative( String msg );
void log(String msg) {
ctx.execute(new Runnable(){
#Override
public void run() {
logNative(msg);
}
});
}
StringBuilder sb = new StringBuilder();
#Override
public void write(int i) {
sb.append((char)i);
}
#Override
public void flush() {
if( sb.length() >0 && !sb.toString().equals("\r\n"))
log(sb.toString());
sb = new StringBuilder();
}
}
public static class FirebugConsoleInfo extends FirebugConsole{
public FirebugConsoleInfo(BrwsrCtx ctx) {
super(ctx);
}
#net.java.html.js.JavaScriptBody(args = { "msg" }, body = ""
+ "Firebug.Console.log(msg);")
public native void logNative( String msg );
}
public static class FirebugConsoleError extends FirebugConsole{
public FirebugConsoleError(BrwsrCtx ctx) {
super(ctx);
}
#net.java.html.js.JavaScriptBody(args = { "msg" }, body = ""
+ "Firebug.Console.error(msg);")
public native void logNative( String msg );
}
}
and
public static void onPageLoad() throws Exception {
BrwsrCtx ctx = BrwsrCtx.findDefault(GoGPS_Fx.class);
System.setOut(new PrintStream(new FirebugConsoleInfo(ctx), true));
System.setErr(new PrintStream(new FirebugConsoleError(ctx), true));
}
Note: it's quite slow for large logs, there might be faster alternatives (StringWriter is one). But I suspect the bottleneck is the passing of messages back and forth from Java to JavaScript.
i'm currently have a look a springboot undertow and it's not really clear (for me) how to dispatch an incoming http request to a worker thread for blocking operation handling.
Looking at the class UndertowEmbeddedServletContainer.class, it look like there is no way to have this behaviour since the only HttpHandler is a ServletHandler, that allow #Controller configurations
private Undertow createUndertowServer() {
try {
HttpHandler servletHandler = this.manager.start();
this.builder.setHandler(getContextHandler(servletHandler));
return this.builder.build();
}
catch (ServletException ex) {
throw new EmbeddedServletContainerException(
"Unable to start embdedded Undertow", ex);
}
}
private HttpHandler getContextHandler(HttpHandler servletHandler) {
if (StringUtils.isEmpty(this.contextPath)) {
return servletHandler;
}
return Handlers.path().addPrefixPath(this.contextPath, servletHandler);
}
By default, in undertow all requests are handled by IO-Thread for non blocking operations.
Does this mean that every #Controller executions will be processed by a non blocking thread ? or is there a solution to chose from IO-THREAD or WORKER-THREAD ?
I try to write a workaround, but this code is pretty uggly, and maybe someone has a better solution:
BlockingHandler.class
#Target({ElementType.TYPE})
#Retention(RetentionPolicy.RUNTIME)
#Documented
public #interface BlockingHandler {
String contextPath() default "/";
}
UndertowInitializer.class
public class UndertowInitializer implements ApplicationContextInitializer<ConfigurableApplicationContext> {
#Override
public void initialize(ConfigurableApplicationContext configurableApplicationContext) {
configurableApplicationContext.addBeanFactoryPostProcessor(new UndertowHandlerPostProcessor());
}
}
UndertowHandlerPostProcessor.class
public class UndertowHandlerPostProcessor implements BeanDefinitionRegistryPostProcessor {
#Override
public void postProcessBeanDefinitionRegistry(BeanDefinitionRegistry beanDefinitionRegistry) throws BeansException {
ClassPathScanningCandidateComponentProvider scanner = new ClassPathScanningCandidateComponentProvider(false);
scanner.addIncludeFilter(new AnnotationTypeFilter(BlockingHandler.class));
for (BeanDefinition beanDefinition : scanner.findCandidateComponents("org.me.lah")){
try{
Class clazz = Class.forName(beanDefinition.getBeanClassName());
beanDefinitionRegistry.registerBeanDefinition(clazz.getSimpleName(), beanDefinition);
} catch (ClassNotFoundException e) {
throw new BeanCreationException(format("Unable to create bean %s", beanDefinition.getBeanClassName()), e);
}
}
}
#Override
public void postProcessBeanFactory(ConfigurableListableBeanFactory configurableListableBeanFactory) throws BeansException {
//no need to post process defined bean
}
}
override UndertowEmbeddedServletContainerFactory.class
public class UndertowEmbeddedServletContainerFactory extends AbstractEmbeddedServletContainerFactory implements ResourceLoaderAware, ApplicationContextAware {
private ApplicationContext applicationContext;
#Override
public EmbeddedServletContainer getEmbeddedServletContainer(ServletContextInitializer... initializers) {
DeploymentManager manager = createDeploymentManager(initializers);
int port = getPort();
if (port == 0) {
port = SocketUtils.findAvailableTcpPort(40000);
}
Undertow.Builder builder = createBuilder(port);
Map<String, Object> handlers = applicationContext.getBeansWithAnnotation(BlockingHandler.class);
return new UndertowEmbeddedServletContainer(builder, manager, getContextPath(),
port, port >= 0, handlers);
}
#Override
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
this.applicationContext = applicationContext;
}
}
...
override UndertowEmbeddedServletContainer.class
public UndertowEmbeddedServletContainer(Builder builder, DeploymentManager manager,
String contextPath, int port, boolean autoStart, Map<String, Object> handlers) {
this.builder = builder;
this.manager = manager;
this.contextPath = contextPath;
this.port = port;
this.autoStart = autoStart;
this.handlers = handlers;
}
private Undertow createUndertowServer() {
try {
HttpHandler servletHandler = this.manager.start();
String path = this.contextPath.isEmpty() ? "/" : this.contextPath;
PathHandler pathHandler = Handlers.path().addPrefixPath(path, servletHandler);
for(Entry<String, Object> entry : handlers.entrySet()){
Annotation annotation = entry.getValue().getClass().getDeclaredAnnotation(BlockingHandler.class);
System.out.println(((BlockingHandler) annotation).contextPath());
pathHandler.addPrefixPath(((BlockingHandler) annotation).contextPath(), (HttpHandler) entry.getValue());
}
this.builder.setHandler(pathHandler);
return this.builder.build();
}
catch (ServletException ex) {
throw new EmbeddedServletContainerException(
"Unable to start embdedded Undertow", ex);
}
}
set initializer to the application context
public static void main(String[] args) {
new SpringApplicationBuilder(Application.class).initializers(new UndertowInitializer()).run(args);
}
finaly create a HttpHandler that dispatch to worker thread
#BlockingHandler(contextPath = "/blocking/test")
public class DatabaseHandler implements HttpHandler {
#Autowired
private EchoService echoService;
#Override
public void handleRequest(HttpServerExchange httpServerExchange) throws Exception {
if(httpServerExchange.isInIoThread()){
httpServerExchange.dispatch();
}
echoService.getMessage("my message");
}
}
As you can see, my "solution" is really heavy, and i would really appreciate any help to simplify it a lot.
Thank you
You don't need to do anything.
Spring Boot's default Undertow configuration uses Undertow's ServletInitialHandler in front of Spring MVC's DispatcherServlet. This handler performs the exchange.isInIoThread() check and calls dispatch() if necessary.
If you place a breakpoint in your #Controller, you'll see that it's called on a thread named XNIO-1 task-n which is a worker thread (the IO threads are named XNIO-1 I/O-n).