I am trying to perform an asynchronous GET-request on my openHAB-project. I have done it before and reused parts of my code to create a new Android app, but it is not working.
In theory I want the state of the "GastSwitch"-item to be written into a String (gastSwitchState) to then be used as a trigger for opening a different activity. If the result of the request is "OFF" the app is supposed to keep running, but stay in the MainActivity.
When debugging it seems like the getGastSwitchState-method is jumped entirely after the enqeue-Method is called. Can someone explain to me, why my code seems to leave out half of the method?
I know that this way of doing it should work, but I can't find where I went wrong.
//connect with REST-API in openHAB :
// GET Status GastSwitch: if Switch = "ON" go to MeetingActivity
//Timer to GET the GastSwitch-status every 30 seconds:
TimerTask gastSwitchTimerTask = new TimerTask() {
public void run() {
try {
getGastSwitchState("myURLforOpenHABGastSwitchState", new Callback() {
#Override
public void getParameter(String string) {
if (gastSwitch.equals("ON")) {
Intent activityIntent = new Intent(getApplicationContext(), MeetingActivity.class);
startActivity(activityIntent);
}
}
});
} catch (IOException e) {
e.printStackTrace();
tvLog.setText(e.toString());
}
}
};
// Timer for GETting the GastSwitch-state every 30 seconds
long emergencyDelay = 1000 * 30 * 1;
Timer gastSwitchTimer = new Timer();
gastSwitchTimer.schedule(gastSwitchTimerTask, 0, emergencyDelay);
}
//Method for GETting the GastSwitch-state from REST-API:
void getGastSwitchState(String url, final Callback callback) throws IOException {
OkHttpClient client = new OkHttpClient().newBuilder()
.build();
okhttp3.Request request = new okhttp3.Request.Builder()
.url(url)
.method("GET", null)
.addHeader("AuthToken", "")
.build();
client.newCall(request)
.enqueue(new okhttp3.Callback() {
#Override
public void onResponse(#NotNull okhttp3.Call call, #NotNull Response response) throws IOException {
if (response.isSuccessful()) {
final String res = response.body().string();
MainActivity.this.runOnUiThread(new Runnable() {
#Override
public void run() {
gastSwitch = res;
tvLog.setText(gastSwitch);
callback.getParameter(gastSwitch);
}
});
}
}
#Override
public void onFailure(#NotNull okhttp3.Call call, #NotNull IOException e) {
runOnUiThread(new Runnable() {
#Override
public void run() {
}
});
}
});
Recently I am working on a Flutter plugin for my project. My plugin requires startActivityForResult but can't figure out how to use it according to Flutter plugin development. I have given my code below.
public class MyPlugin implements FlutterPlugin, MethodCallHandler {
private static final int REQUEST_CODE = 1;
Result result;
#Override
public void onAttachedToEngine(#NonNull FlutterPluginBinding flutterPluginBinding) {
channel = new MethodChannel(flutterPluginBinding.getBinaryMessenger(), "my_plugin");
channel.setMethodCallHandler(this);
}
#Override
public void onDetachedFromEngine(#NonNull FlutterPluginBinding binding) {
channel.setMethodCallHandler(null);
}
#Override
public void onMethodCall(#NonNull MethodCall call, #NonNull Result result) {
this.result = result;
if (call.method.equals("myMethod")) {
myMethod();
} else {
result.notImplemented();
}
}
private void myMethod() {
// my intent instance will be here
startActivityForResult(intent, REQUEST_CODE); // Cannot resolve method 'startActivityForResult'
}
#Override
public boolean onActivityResult(int requestCode, int resultCode, #Nullable Intent data) {
try {
if (requestCode == REQUEST_CODE) {
result.success("done");
} else {
result.error("Something went wrong", null, null);
}
} catch (Exception e) {
Log.e(TAG, "Exception: " + e.toString());
}
return false;
}
}
Try this solution to get the Context. After, call the intent using the Context:
private void myMethod() {
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);
}
When I create a new Observer as anonymous type It works Fine:
Observable<List<Post>> postsListObservable = mApplicationAPI.getPosts();
postsListObservable.
subscribeOn(Schedulers.io()).
observeOn(AndroidSchedulers.mainThread()).subscribe( new Observer<List<Post>>() {
#Override
public void onSubscribe(Disposable d) {
Log.i("ZOKa", "onSubscribe: ");
}
#Override
public void onNext(List<Post> posts) {
Log.i("ZOKa", "onNext: " + posts.size());
}
#Override
public void onError(Throwable e) {
Log.i("ZOKa", "onError: " + e.getMessage());
}
#Override
public void onComplete() {
Log.i("ZOKa", "onComplete: ");
}
});
When I create the Observer as a Dynamic Type it doesn't emit data
Observable<List<Post>> postsListObservable = mApplicationAPI.getPosts();
postsListObservable.
subscribeOn(Schedulers.io()).
observeOn(AndroidSchedulers.mainThread());
Observer<List<Post>> observer = new Observer<List<Post>>() {
#Override
public void onSubscribe(Disposable d) {
Log.i("ZOKa", "onSubscribe: ");
}
#Override
public void onNext(List<Post> posts) {
Log.i("ZOKa", "onNext: " + posts.size());
}
#Override
public void onError(Throwable e) {
Log.i("ZOKa", "onError: " + e.getMessage());
}
#Override
public void onComplete() {
Log.i("ZOKa", "onComplete: ");
}
};
postsListObservable.subscribe(observer);
Logcat for the first code snippet:
com.tripleService.basesetupfordi/I/ZOKa: onSubscribe:
com.tripleService.basesetupfordi/I/ZOKa: onNext: 100:
com.tripleService.basesetupfordi/I/ZOKa: onComplete:
Logcat for the second one:
com.tripleService.basesetupfordi/I/ZOKa: onError: null
So, What is the diff in between?
That's because Operators return new observables, but they don't modify the observable that they were called on. subscribeOn and observeOn in the second example has no impact on the postsListObservable and the observer.
Following should work:
Observable<List<Post>> postsListObservable = mApplicationAPI.getPosts();
Observable<List<Post>> postsListObservable2 = postsListObservable.
subscribeOn(Schedulers.io()).
observeOn(AndroidSchedulers.mainThread());
Observer<List<Post>> observer = new Observer<List<Post>>() {
...
};
postsListObservable2.subscribe(observer);
or
Observable<List<Post>> postsListObservable = mApplicationAPI.getPosts();
Observer<List<Post>> observer = new Observer<List<Post>>() {
...
};
postsListObservable.
subscribeOn(Schedulers.io()).
observeOn(AndroidSchedulers.mainThread()).subscribe(observer);
I am trying to create textview in android which display the remaining time(seconds).
Have used runOnUiThread and Hadnler for this and everything seems working fine(sysout and debug shows that both threads are executed and value is updated properly).
However, on UI the textview value is not updated properly. It gets updated with last value when the thread completes.
I am writing the below code inside private method of the fragment.
final TextView timerText = (TextView) mainView.findViewById(R.id.timerText);
timerText.setText(R.string.maxAllowedSeconds);
handler.post(new Runnable() {
#Override
public void run() {
while(true)
{
System.out.println("Text:"+ ""+maxAllowedSeconds);
try {
TimeUnit.SECONDS.sleep(1);
} catch (InterruptedException e) {
e.printStackTrace();
}
maxAllowedSeconds--;
if(maxAllowedSeconds <= 0)
break;
getActivity().runOnUiThread(new Runnable() {
#Override
public void run() {
System.out.println("Running on UI Thread : " + maxAllowedSeconds);
timerText.setText("" + maxAllowedSeconds);
}
});
}
}
});
Gone through many of the previous questions in this area but none seems to have concrete solutions for this problem.
Thanks in advance.
SOLUTOIN:
Finally I used AsynchTask which worked perfectly as expected.
private class RapidFireAsyncTimerTask extends AsyncTask<Integer, Integer, Void> {
private Context context;
private View rootView;
public RapidFireAsyncTimerTask(Context ctx, View rootView) {
this.context = ctx;
this.rootView = rootView;
}
#Override
protected Void doInBackground(Integer... params) {
int maxSec= params[0];
while (true) {
try {
TimeUnit.SECONDS.sleep(1);
} catch (InterruptedException e) {
e.printStackTrace();
}
publishProgress(--maxSec);
if (maxSec <= 0)
break;
}
return null;
}
#Override
protected void onProgressUpdate(final Integer... values) {
((TextView) rootView.findViewById(R.id.timerText)).setText("" + values[0]);
}
#Override
protected void onPostExecute(Void aVoid) {
//next task
}
}
Instead of Handler, it worked with AsynchTask(No runOnUiThread needed).
public RapidFireAsyncTimerTask(Context ctx, View rootView) {
this.context = ctx;
this.rootView = rootView;
}
#Override
protected Void doInBackground(Integer... params) {
int maxSec= params[0];
while (true) {
try {
TimeUnit.SECONDS.sleep(1);
} catch (InterruptedException e) {
e.printStackTrace();
}
publishProgress(--maxSec);
if (maxSec <= 0)
break;
}
return null;
}
#Override
protected void onProgressUpdate(final Integer... values) {
((TextView) rootView.findViewById(R.id.timerText)).setText("" + values[0]);
}
#Override
protected void onPostExecute(Void aVoid) {
//next task
}
}
I am developing chat application by using Openfire XMPP server. I can text chat between two user. But i want to know Typing status when some one is typing message. So i created a class :-
public class typingStatus implements ChatStateListener {
#Override
public void processMessage(Chat arg0, Message arg1) {
// TODO Auto-generated method stub
}
#Override
public void stateChanged(Chat arg0, ChatState arg1) {
// TODO Auto-generated method stub
System.out.println(arg0.getParticipant() + " is " + arg1.name());
}
}
But i am confuse so that How will it work? I know that i need a packet where i can it in Listener. But i am unable to find that packet.
Please any one suggest, How will it work?
and also what is difference between Smack and asmack?
Thank you!
To enable ChatStateListener you need to create a custom MessageListener Class
public class MessageListenerImpl implements MessageListener,ChatStateListener {
#Override
public void processMessage(Chat arg0, Message arg1) {
System.out.println("Received message: " + arg1);
}
#Override
public void stateChanged(Chat arg0, ChatState arg1) {
if (ChatState.composing.equals(arg1)) {
Log.d("Chat State",arg0.getParticipant() + " is typing..");
} else if (ChatState.gone.equals(arg1)) {
Log.d("Chat State",arg0.getParticipant() + " has left the conversation.");
} else {
Log.d("Chat State",arg0.getParticipant() + ": " + arg1.name());
}
}
}
Then you create MessageListener object
MessageListener messageListener = new MessageListenerImpl();
And then pass this in the create chat method
Chat newChat = chatmanager.createChat(jabber_id_of_friend, messageListener);
what is difference between Smack and asmack? <-- Check This
finally I got the solution. I need to use chat listener along with chat manager and also I need to use in built sendcomposingnotification function. No need to use Messageeventrequestlistener interface or any other custom class for this. I added the following lines,,
connection.getChatManager().addChatListener(new ChatManagerListener() {
#Override
public void chatCreated(final Chat arg0, final boolean arg1) {
// TODO Auto-generated method stub
arg0.addMessageListener(new MessageListener()
{
#Override
public void processMessage(Chat arg0, Message arg1)
{
// TODO Auto-generated method stub
Log.d("TYpe Stat",title[0] + " is typing......");
Toast.makeText(getApplicationContext(),title[0] + " is typing......",Toast.LENGTH_SHORT).show();
}
}
});
}
});
and also need to send notification like this..
mem.sendComposingNotification(etRecipient.getText().toString(), message.getPacketID());
System.out.println("Sending notification");
where mem is type of MessageEventManger.
Ref: http://www.igniterealtime.org/builds/smack/docs/latest/javadoc/org/jivesoftware/smackx/MessageEventManager.html
ChatManager chatManager = ChatManager.getInstanceFor(connection);
Chat chat= chatManager.createChat(to, new ChatStateListener() {
#Override
public void stateChanged(Chat chat, ChatState state) {
switch (state){
case active:
Log.d("state","active");
break;
case composing:
Log.d("state","composing");
break;
case paused:
Log.d("state","paused");
break;
case inactive:
Log.d("state","inactive");
break;
case gone:
Log.d("state","gone");
break;
}
}
#Override
public void processMessage(Chat chat, Message message) {
Log.d("processMessage","processMessage");
}
});
use this code.hope so will work
i am using chat state listener :
Chat chat = chatManager.createChat(jid,
new ChatStateChangedListener());
bind the chatstatelistener with each jid like above , then :
public class ChatStateChangedListener implements ChatStateListener {
public ChatStateChangedListener() {
printLog("Chat State Changed Listner Constructor");
}
#Override
public void processMessage(Chat arg0, Message arg1) {
}
#Override
public void stateChanged(Chat chat, ChatState state) {
if (state.toString().equals(ChatState.composing.toString())) {
tvLastSeen.setText("Typing...");
} else if (state.toString().equals(ChatState.paused.toString())) {
tvLastSeen.setText("paused...");
} else {
tvLastSeen.setText("nothing");
}
}
}
}
Create On Class MMessageListener to listen incoming messages
private class MMessageListener implements MessageListener, ChatStateListener {
public MMessageListener(Context contxt) {
}
#Override
public void stateChanged(Chat chat, ChatState chatState) {
mStatus = "Online";
if (ChatState.composing.equals(chatState)) {
mStatus = chat.getParticipant() + " is typing..";
Log.d("Chat State", chat.getParticipant() + " is typing..");
} else if (ChatState.gone.equals(chatState)) {
Log.d("Chat State", chat.getParticipant() + " has left the conversation.");
mStatus = chat.getParticipant() + " has left the conversation.";
} else if (ChatState.paused.equals(chatState)){
Log.d("Chat State", chat.getParticipant() + ": " + chatState.name());
mStatus = "Paused";
}else if (ChatState.active.equals(chatState)){
mStatus = "Online";
}
// do whatever you want to do once you receive status
}
#Override
public void processMessage(Message message) {
}
#Override
public void processMessage(Chat chat, Message message) {
}
}
Add Listener to your chat object
Chat Mychat = ChatManager.getInstanceFor(connection).createChat(
"user2#localhost"),
mMessageListener);
Send status to receiving user on edittext text change
ChatStateManager.getInstance(connection).setCurrentState(ChatState.composing, Mychat);
This works fine for me.
Your or another xmpp client which you use, should sending chat state for You can catch the state.
Like This;
try {
ChatStateManager.getInstance(GlobalVariables.xmppManager.connection).setCurrentState(ChatState.composing, chat);
} catch (XMPPException e) {
e.printStackTrace();
}
or
try {
ChatStateManager.getInstance(GlobalVariables.xmppManager.connection).setCurrentState(ChatState.gone, chat);
} catch (XMPPException e) {
e.printStackTrace();
}
However you can get it from ProcessPacket also.
there you will get a Message object, after you can extract xml portion from there and handle them its contain specific chatstate or not.
Message message = (Message) packet;
String msg_xml = message.toXML().toString();
if (msg_xml.contains(ChatState.composing.toString())) {
//handle is-typing, probably some indication on screen
} else if (msg_xml.contains(ChatState.paused.toString())) {
// handle "stopped typing"
} else {
// normal msg
}
now handle as per your requirement.
Just add ChatStateManager after ChatManager intalization:
chatManager = ChatManager.getInstanceFor(getXmpptcpConnection());
ChatStateManager.getInstance(getXmpptcpConnection());
Then you need to add ChatStateListener during createChat(to,chatMesageListener):
chatManager.createChat(message.getTo(), chatMessageListener).sendMessage(message);
private ChatStateListener chatMessageListener = new ChatStateListener() {
#Override
public void stateChanged(Chat chat, ChatState state) {
//State Change composing,active,paused,gone,etc
Log.d(TAG, "ChatStateListener:::stateChanged -> " + chat.toString() + " \n -> " + state.toString());
}
#Override
public void processMessage(Chat chat, Message message) {
//Incoming Message
Log.d(TAG, "ChatStateListener:::processMessage -> " + chat.toString() + " \n -> " + message.toString());
}
};