I am using the class SpeechRecognizer by calling the method startListening when a button is pressed, but I get an error. First the callback methods onReadyForSpeech, onBeginningOfSpeech, onEndofSpeech are called (immediately) and at the end onError with the errorcode 2 "ERROR_NETWORK" is called. When I call the intent directly by using startActivityForResult, it works. But I want to get rid of the time consuming popup dialog.
I have the RECORD_AUDIO permission set.
I am not sure, but perhaps the intent want to load something from the internet. For that, I tried to add the INTERNET-Permission, but it did not work either.
Here the code:
public class MainActivity extends ActionBarActivity implements RecognitionListener
{
private SpeechRecognizer speechRecognizer;
public void onReadyForSpeech(Bundle params)
{
AddLog("onReadyForSpeech called.");
}
public void onBeginningOfSpeech()
{
AddLog("onBeginningOfSpeech called.");
}
public void onRmsChanged(float rmsdB)
{
AddLog("onRmsChanged called.");
}
public void onBufferReceived(byte[] buffer)
{
AddLog("onBufferReceived called.");
}
public void onEndOfSpeech()
{
AddLog("onEndOfSpeech called.");
}
public void onError(int error)
{
AddLog(String.format("onError called with id: %d.", error));
}
public void onResults(Bundle results)
{
String str = new String();
ArrayList<String> data = results.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
for(int i = 0; i < data.size(); i++)
{
str += data.get(i);
}
final String strAnswer = str;
AddLog(String.format("Answer is %s", strAnswer));
}
public void onPartialResults(Bundle psrtialResults)
{
AddLog("onPartialResults called.");
}
public void onEvent(int eventType, Bundle params)
{
AddLog("onEvent called.");
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment())
.commit();
}
speechRecognizer = SpeechRecognizer.createSpeechRecognizer(this);
speechRecognizer.setRecognitionListener(this);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment
{
public PlaceholderFragment()
{
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container, false);
return rootView;
}
}
public void AddLog(final String text)
{
TextView txtLogView = (TextView) findViewById(R.id.textViewLog);
if (txtLogView != null)
{
txtLogView.append(text + "\n");
}
}
// Only for test
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
if (requestCode == 1 && resultCode == RESULT_OK)
{
ArrayList<String> matches = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
AddLog(matches.get(0));
}
super.onActivityResult(requestCode, resultCode, data);
}
public void Start(View view)
{
AddLog("Start pressed.");
Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
intent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE, getPackageName());
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, "en-US");
// Only for test
//startActivityForResult(intent, 1);
speechRecognizer.startListening(intent);
AddLog("startListening called.");
}
}
I solved it by myself. The problem was, that the language pack for US had an update. I had to load it by hand (in the language settings of my mobile). After that the error ERROR_NETWORK disappeared.
Related
I'm making an app where I ask a question and the answering machine answers me depending on the question, but the problem is that the cell phone listens but it does not respond, that is, it does not talk.
She is speak in open app with welcome, but after no talk
My code
public class MainActivity extends AppCompatActivity {
private TextToSpeech myTTS;
private SpeechRecognizer mySpeechReconizer;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
Button mic = (Button) findViewById(R.id.mic);
mic.setOnClickListener((view) ->
{
Intent i = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
i.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
i.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, 1);
mySpeechReconizer.startListening(i);
});
initializeTextToSpeech();
initializeSpeechReconizer();
}
private void initializeSpeechReconizer() {
if (SpeechRecognizer.isRecognitionAvailable(this)) {
mySpeechReconizer = SpeechRecognizer.createSpeechRecognizer(this);
mySpeechReconizer.setRecognitionListener(new RecognitionListener() {
#Override
public void onReadyForSpeech(Bundle params) {
}
#Override
public void onBeginningOfSpeech() {
}
#Override
public void onRmsChanged(float rmsdB) {
}
#Override
public void onBufferReceived(byte[] buffer) {
}
#Override
public void onEndOfSpeech() {
}
#Override
public void onError(int error) {
}
#Override
public void onResults(Bundle bundle) {
List<String> res = bundle.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
processResult(res.get(0));
}
#Override
public void onPartialResults(Bundle partialResults) {
}
#Override
public void onEvent(int eventType, Bundle params) {
}
});
}
}
private void processResult(String s) {
s = s.toLowerCase();
//Qual é o teu nome?
if (s.indexOf("What") != -1){
if (s.indexOf("your name") != -1){
speak("two");
}
if (s.indexOf("time") != -1){
Date now = new Date();
String time = DateUtils.formatDateTime(this,now.getTime(),
DateUtils.FORMAT_SHOW_TIME);
speak(time);
}
}
else if (s.indexOf("open") != -1){
if (s.indexOf("browser") != -1){
}
speak("Sou a Lian, fui fundada pelo Leandro e moro em Baião.");
}
}
private void initializeTextToSpeech() {
myTTS = new TextToSpeech(this, new TextToSpeech.OnInitListener() {
#Override
public void onInit(int status) {
if (myTTS.getEngines().size()==0){
Toast.makeText(MainActivity.this, "Teste", Toast.LENGTH_LONG).show();
finish();
} else {
Locale l1 = new Locale("pt","PT");
myTTS.setLanguage(l1);
speak("Olá Leandro, estou pronta,podes falar!");
}
}
});
}
private void speak(String s) {
if (Build.VERSION.SDK_INT >=21){
myTTS.speak(s,TextToSpeech.QUEUE_FLUSH,null,null);
} else{
myTTS.speak(s,TextToSpeech.QUEUE_FLUSH,null);
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
#Override
protected void onPause() {
super.onPause();
myTTS.shutdown();
}
}
I can't figure out why my onClick method for my buttons are not working. Everytime I click the button, my logcat says ViewPostImeInputStage Action_Down.
I appreciate any help!
public class MainActivity extends ActionBarActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState == null) {
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
BluetoothConnect fragment = new BluetoothConnect();
transaction.add(R.id.sample_content_fragment, fragment);
transaction.commit();
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
And this is my fragment.
public class BluetoothConnect extends Fragment {
//For debugging purposes
private static final String TAG = "BluetoothConnect";
// Intent request codes
private static final int REQUEST_CONNECT_DEVICE_SECURE = 1;
private static final int REQUEST_CONNECT_DEVICE_INSECURE = 2;
private static final int REQUEST_ENABLE_BT = 3;
//Main buttons
private Button shareButton;
private Button listenButton;
private TextView test;
/**
* Name of the connected device
*/
private String mConnectedDeviceName = null;
/**
* Local Bluetooth adapter
*/
private BluetoothAdapter mBluetoothAdapter = null;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
//Get local Bluetooth adapter
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
//If the adapter is null, then Bluetooth is not supported
if (mBluetoothAdapter == null) {
FragmentActivity activity = getActivity();
Toast.makeText(activity, "Bluetooth is not available", Toast.LENGTH_LONG).show();
activity.finish();
}
}
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container,
#Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.activity_main, container, false);
}
#Override
public void onViewCreated(View view, #Nullable Bundle savedInstanceState) {
listenButton = (Button) view.findViewById(R.id.listen);
shareButton = (Button) view.findViewById(R.id.share);
test = (TextView) view.findViewById(R.id.test);
}
#Override
public void onStart() {
super.onStart();
//If BT is not on, request that it be enabled
if (!mBluetoothAdapter.isEnabled()) {
Intent enableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableIntent, REQUEST_ENABLE_BT);
} else {
setupButtons();
}
}
#Override
public void onDestroy() {
super.onDestroy();
//Figure out what to do if we need to destroy
}
#Override public void onResume() {
super.onResume();
//figure out what to do if person pauses out of app
}
public void setupButtons() {
Log.d(TAG, "setupButtons()");
//Initialize the music buttons
listenButton.setOnClickListener(new ButtonOnClickListener("listen"));
Log.d(TAG, "finished listenButton");
shareButton.setOnClickListener(new ButtonOnClickListener("share"));
}
private class ButtonOnClickListener implements View.OnClickListener {
String type;
public ButtonOnClickListener(String button) {
Log.d(TAG, this.type);
this.type = button;
}
public void onClick(View view) {
if (this.type == "listen") {
listenMusic();
} else {
shareMusic();
}
}
}
private void ensureDiscoverable() {
if (mBluetoothAdapter.getScanMode() !=
BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE) {
Intent discoverableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);
startActivity(discoverableIntent);
}
}
private void listenMusic() {
Log.d(TAG, "OMG ITS WORKING");
}
private void shareMusic() {
Log.d(TAG, "OMG ITS WORKING");
}
}
Thanks so much!
have a look here
https://stackoverflow.com/a/32016362/5281187
Wrap your layout over the one you already have
I copied this from internet, other people say that works, but when I try
to speak it doesn't do anything.
I tried to write the code about the intent outside the method onBeginingOfSpeech() and it works.
public class Schermata extends ActionBarActivity implements RecognitionListener{
SpeechRecognizer speechRecognizer;
TextView test;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_schermata);
speechRecognizer = SpeechRecognizer.createSpeechRecognizer(this);
test = (TextView) findViewById(R.id.test);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_schermata, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
#Override
public void onReadyForSpeech(Bundle params) {
test.setText("INIZIO");
}
#Override
public void onBeginningOfSpeech() {
test.setText("INIZIO");
Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
intent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE,getClass().getPackage().getName());
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
speechRecognizer.startListening(intent);
}
#Override
public void onRmsChanged(float rmsdB) {
}
#Override
public void onBufferReceived(byte[] buffer) {
}
#Override
public void onEndOfSpeech() {
test.setText("FINE");
}
#Override
public void onError(int error) {
}
#Override
public void onResults(Bundle results) {
ArrayList<String> res = results.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
String s = "";
for (String result : res)
s += result + "\n";
test.setText(s);
}
#Override
public void onPartialResults(Bundle partialResults) {
}
#Override
public void onEvent(int eventType, Bundle params) {
}
}
If I understood correctly and this works for you when the Intent is defined outside of onBeginningOfSpeech() , then simply put it outside of it, it is wrong to put it there, and I'll explain.
The function onBeginningOfSpeech() ( Also : onResults,onReadyForSpeech, etc...) is called AFTER the recognizer has started working, and is only a callback to the event where the recognizer hears a person speaking, so you need to have that intent ready and paired up to the recognizer BEFORE this function is called.
Try to create an 'initialize()' function, which sets all of those up before you call
speechRecognizer.startListening(intent);
In other words use this , instead of what you have on 'onBeginningOfSpeech()'
public void initialize(){
Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
intent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE,getClass().getPackage().getName());
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
speechRecognizer.startListening(intent);
}
Other then that, you are using onResults() in the wrong way, you should only extract the first String of the ArrayList given to you, the others are just worst results of the same speech.
<uses-permission android:name="android.permission.RECORD_AUDIO" />
Ensure you have RECORD_AUDIO permission in the manifest, voice recognition doesn`t work without it.
This worked when the Glass in on XE12, I have opened the solution after about 2 Months and now with XE17 the menu items are not shown when tapped on the Live card, instead the live card is disappearing.
I have updated the GDK, I have changed the code to support the latest GDK sneak peek version 2 changes according to this (https://developers.google.com/glass/release-notes#xe12)
This is the code
public class MenuActivity extends Activity {
private static final String TAG = MenuActivity.class.getSimpleName();
private VisionService.VisionBinder mVisionService;
private ServiceConnection mConnection = new ServiceConnection() {
#Override
public void onServiceConnected(ComponentName name, IBinder service) {
if (service instanceof VisionService.VisionBinder) {
mVisionService = (VisionService.VisionBinder) service;
openOptionsMenu();
}
// No need to keep the service bound.
unbindService(this);
}
#Override
public void onServiceDisconnected(ComponentName name) {
}
};
private boolean mResumed;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
bindService(new Intent(this, VisionService.class), mConnection, 0);
}
#Override
protected void onResume() {
super.onResume();
mResumed = true;
openOptionsMenu();
}
#Override
protected void onPause() {
super.onPause();
mResumed = false;
}
#Override
public void openOptionsMenu() {
if (mResumed && mConnection != null) {
super.openOptionsMenu();
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_send) {
mVisionService.requestWorkOrderCard();
finish();
return true;
} else if (id == R.id.action_refresh) {
mVisionService.requestTopWorkOrders();
finish();
return true;
} else if (id == R.id.action_finish) {
stopService(new Intent(this, VisionService.class));
finish();
return true;
} else {
return super.onOptionsItemSelected(item);
}
}
#Override
public void onOptionsMenuClosed(Menu menu) {
super.onOptionsMenuClosed(menu);
}
}
This is the error I am getting
.WindowManager$BadTokenException: Unable to add window -- token null is not valid; is your activity running?
And this Log(not error) too
Rebinding view with mis-matched type: com.google.glass.home.timeline.TimelineApiAdapter
It would be great if any body could help on this. Thank You
You need to change the way menu gets opened for XE 16 or 17. Below is my code that works:
public class MenuActivity extends Activity {
private boolean mAttachedToWindow;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public void onAttachedToWindow() {
super.onAttachedToWindow();
mAttachedToWindow = true;
openOptionsMenu();
}
#Override
public void onDetachedFromWindow() {
super.onDetachedFromWindow();
mAttachedToWindow = false;
}
#Override
public void openOptionsMenu() {
if (mAttachedToWindow) {
super.openOptionsMenu();
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.main, menu);
return true;
}
...
}
public class AppService extends Service {
private static final String TAG = "AppService";
private static final String LIVE_CARD_ID = "HelloGlass";
private AppDrawer mCallback;
private LiveCard mLiveCard;
#Override
public void onCreate() {
super.onCreate();
}
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
if (mLiveCard == null) {
mLiveCard = new LiveCard(this, LIVE_CARD_ID);
mCallback = new AppDrawer(this);
mLiveCard.setDirectRenderingEnabled(true).getSurfaceHolder().addCallback(mCallback);
Intent menuIntent = new Intent(this, MenuActivity.class);
mLiveCard.setAction(PendingIntent.getActivity(this, 0, menuIntent, 0));
mLiveCard.publish(PublishMode.REVEAL);
}
return START_STICKY;
}
...
}
Also, the GDK samples Stopwatch and Timer (https://developers.google.com/glass/samples/gdk) have menu-related code that works perfectly well.
I have a trouble with getting Activity(Nullpointerexception) after that I have rotate screen and received callback from AsyncTask to update my views of the fragment. If I wont change orientation then everything is OK(but not all the time, sometimes this bug appears)
My main activity:
public class MainActivity extends SherlockFragmentActivity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.pager_layout);
fm = getSupportFragmentManager();
fm.addOnBackStackChangedListener(this);
session = new SessionManager(getApplicationContext());
if (session.isAuthorizated()) {
disableTabs();
FragmentTransaction ft = fm.beginTransaction();
if (session.termsAndConditions()) {
ft.replace(android.R.id.content, new TermsAndConditionsFragment(), "terms-and-conditions").commit();
}
}
} else {
enableTabs();
mTabsAdapter = new TabsAdapter(this, mViewPager);
mTabsAdapter.addTab(actionBar.newTab().setText("Log in"), LoginFragment.class, null);
mTabsAdapter.addTab(actionBar.newTab().setText("Calculator"), CalculatorFragment.class, null);
}
}
That`s my fragment:
public class TermsAndConditionsFragment extends SherlockFragment implements OnClickListener, OnTouchListener, OnEditorActionListener, ValueSelectedListener, AsyncUpdateViewsListener {
private static final String TAG = "TermsAndConditionsFragment";
private TermsAndConditionsManager termsAndConditionsM;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
prepareData();
}
public void prepareData() {
if (getSherlockActivity() == null)
Log.d(TAG, "Activity is null");
termsAndConditionsM = new TermsAndConditionsManager(getSherlockActivity().getApplicationContext());
termsAndConditions = termsAndConditionsM.getTermsAndConditions();
...
// some stuff
...
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
rootView = init(inflater, container);
return rootView;
}
private View init(LayoutInflater inflater, ViewGroup container) {
rootView = inflater.inflate(R.layout.fragment_terms_and_conditions, container, false);
//bla bla bla
return rootView;
}
public void updateTermsAndConditionsView() {
//update views here
}
#Override
public void onClick(View v) {
ft = fm.beginTransaction();
switch (v.getId()) {
case R.id.etHowMuch:
d = NumberPaymentsPickerFragment.newInstance(getSherlockActivity(), Integer.valueOf(howMuch.replace("£", "")), 0);
d.setValueSelectedListener(this);
d.show(getFragmentManager(), Const.HOW_MUCH);
break;
}
}
#Override
public void onValueSelected() {
Bundle args = new Bundle();
...
ExecuteServerTaskBackground task = new ExecuteServerTaskBackground(getSherlockActivity());
task.setAsyncUpdateViewsListener(this);
task.action = ServerAPI.GET_TERMS_AND_CONDITIONS;
task.args = args;
task.execute();
}
#Override
public void onUpdateViews() {
prepareData();
updateTermsAndConditionsView();
}
}
My AsyncTask with callback:
public class ExecuteServerTaskBackground extends AsyncTask<Void, Void, Void> {
private static final String TAG = "ExecuteServerTaskBackground";
Activity mActivity;
Context mContext;
private AsyncUpdateViewsListener callback;
public ExecuteServerTaskBackground(Activity activity) {
this.mActivity = activity;
this.mContext = activity.getApplicationContext();
}
public void setAsyncUpdateViewsListener(AsyncUpdateViewsListener listener) {
callback = listener;
}
#Override
protected Void doInBackground(Void... params) {
ServerAPI server = new ServerAPI(mContext);
if (!args.isEmpty())
msg = server.serverRequest(action, args);
else
msg = server.serverRequest(action, null);
return null;
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
callback.onUpdateViews();
}
}
Why does it behave so? How can I get activity correctly if I change orientation.
EDIT:
As I understand correctly nullpointer appears after orientation changed and asynctask executed due to wrong reference between asyctask and Activity. Recreated activity doesnt have this reference thats why when I receive callback I use wrong activity reference which isn`t exist anymore. But how can I save current activity reference?
EDIT:
I have decided to try realize my task throughout Service and that`s what I have done.
Activity:
public class MainFragment extends Fragment implements ServiceExecutorListener, OnClickListener {
private static final String TAG = MainFragment.class.getName();
Button btnSend, btnCheck;
TextView serviceStatus;
Intent intent;
Boolean bound = false;
ServiceConnection sConn;
RESTService service;
ProgressDialog pd = new ProgressDialog();
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
setRetainInstance(true);
intent = new Intent(getActivity(), RESTService.class);
getActivity().startService(intent);
sConn = new ServiceConnection() {
#Override
public void onServiceConnected(ComponentName name, IBinder binder) {
Log.d(TAG, "MainFragment onServiceConnected");
service = ((RESTService.MyBinder) binder).getService();
service.registerListener(MainFragment.this);
if (service.taskIsDone())
serviceStatus.setText(service.getResult());
bound = true;
}
public void onServiceDisconnected(ComponentName name) {
Log.d(TAG, "MainFragment onServiceDisconnected");
bound = false;
}
};
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.main_fragment, container, false);
serviceStatus = (TextView) rootView.findViewById(R.id.tvServiceStatusValue);
btnSend = (Button) rootView.findViewById(R.id.btnSend);
btnCheck = (Button) rootView.findViewById(R.id.btnCheck);
btnSend.setOnClickListener(this);
btnCheck.setOnClickListener(this);
return rootView;
}
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btnSend:
pd.show(getFragmentManager(), "ProgressDialog");
service.run(7);
service.run(2);
service.run(4);
break;
case R.id.btnCheck:
if (service != null)
serviceStatus.setText(String.valueOf(service.taskIsDone()) + service.getTasksCount());
break;
}
}
#Override
public void onStart() {
super.onStart();
Log.d(TAG, "Bind service");
getActivity().bindService(intent, sConn, 0);
}
#Override
public void onPause() {
super.onDestroy();
Log.d(TAG, "onDestroy: Unbind service");
if (!bound)
return;
getActivity().unbindService(sConn);
service.unregisterListener(this);
bound = false;
}
#Override
public void onComplete(String result) {
Log.d(TAG, "Task Completed");
pd.dismiss();
serviceStatus.setText(result);
}
}
Dialog:
public class ProgressDialog extends DialogFragment implements OnClickListener {
final String TAG = ProgressDialog.class.getName();
public Dialog onCreateDialog(Bundle savedInstanceState) {
setRetainInstance(true);
AlertDialog.Builder adb = new AlertDialog.Builder(getActivity())
.setTitle("Title!")
.setPositiveButton(R.string.yes, this)
.setNegativeButton(R.string.no, this)
.setNeutralButton(R.string.maybe, this)
.setCancelable(false)
.setMessage(R.string.message_text)
.setOnKeyListener(new OnKeyListener() {
#Override
public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {
return true;
}
});
return adb.create();
}
public void onClick(DialogInterface dialog, int which) {
int i = 0;
switch (which) {
case Dialog.BUTTON_POSITIVE:
i = R.string.yes;
break;
case Dialog.BUTTON_NEGATIVE:
i = R.string.no;
break;
case Dialog.BUTTON_NEUTRAL:
i = R.string.maybe;
break;
}
if (i > 0)
Log.d(TAG, "Dialog 2: " + getResources().getString(i));
}
public void onDismiss(DialogInterface dialog) {
Log.d(TAG, "Dialog 2: onDismiss");
// Fix to avoid simple dialog dismiss in orientation change
if ((getDialog() != null) && getRetainInstance())
getDialog().setDismissMessage(null);
super.onDestroyView();
}
public void onCancel(DialogInterface dialog) {
super.onCancel(dialog);
Log.d(TAG, "Dialog 2: onCancel");
}
}
Service:
public class RESTService extends Service {
final String TAG = RESTService.class.getName();
MyBinder binder = new MyBinder();
ArrayList<ServiceExecutorListener> listeners = new ArrayList<ServiceExecutorListener>();
Handler h = new Handler();
RequestManager mRequest;
ExecutorService es;
Object obj;
int time;
StringBuilder builder;
String result = null;
public void onCreate() {
super.onCreate();
Log.d(TAG, "RESTService onCreate");
es = Executors.newFixedThreadPool(1);
obj = new Object();
builder = new StringBuilder();
}
public void run(int time) {
RunRequest rr = new RunRequest(time);
es.execute(rr);
}
class RunRequest implements Runnable {
int time;
public RunRequest(int time) {
this.time = time;
Log.d(TAG, "RunRequest create");
}
public void run() {
Log.d(TAG, "RunRequest start, time = " + time);
try {
TimeUnit.SECONDS.sleep(time);
} catch (InterruptedException e) {
e.printStackTrace();
}
try {
Log.d(TAG, "RunRequest obj = " + obj.getClass());
} catch (NullPointerException e) {
Log.d(TAG, "RunRequest error, null pointer");
}
builder.append("result " + time + ", ");
result = builder.toString();
sendCallback();
}
}
private void sendCallback() {
h.post(new Runnable() {
#Override
public void run() {
for (ServiceExecutorListener listener : listeners)
listener.onComplete();
}
});
}
public boolean taskIsDone() {
if (result != null)
return true;
return false;
}
public String getResult() {
return result;
}
public void registerListener(ServiceExecutorListener listener) {
listeners.add(listener);
}
public void unregisterListener(ServiceExecutorListener listener) {
listeners.remove(listener);
}
public IBinder onBind(Intent intent) {
Log.d(TAG, "RESTService onBind");
return binder;
}
public boolean onUnbind(Intent intent) {
Log.d(TAG, "RESTService onUnbind");
return true;
}
public class MyBinder extends Binder {
public RESTService getService() {
return RESTService.this;
}
}
}
As you mention in your edit, the current Activity is destroyed and recreated on orientation change.
But how can I save current activity reference?
You shouldn't. The previous Activity is no longer valid. This will not only cause NPEs but also memory leaks because the AsyncTask might hold the reference to old Activity, maybe forever.
Solution is to use Loaders.