listener

问题 I have the following code which defines a Car . Each Car has a color, along with a setColor(color) function. I want to add listener functions which are called whenever setColor(color) is called, and I want to be able to tack these listener functions on whenever I want. Is this a suitable approach? Is there a cleaner way? function Car() { this._color = 'red'; this._callbacks = {}; this.setColor = function(color) { this._color = color; console.log(">>> set car color to " + color); if (this.

问题 My problem is how pynput returns the data (I hope that's how you would say it?). So what I'm trying to do is have the listener record keyboard input, then use what letters are added to the list to make a string in word. Although, it seems like the letters aren't strings. Instead they return as pynput.keyboard._win32.KeyCode Is there a way to convert that to a python readable string or something? Like if: i typed f, t, w print(type(list[0]), word) return 'f', ftw what it comes out as so far is

问题 This question already has an answer here : How to check a certain data already exists in firestore or not (1 answer) Closed 2 years ago . I want to see what is the error in this code for the executiom, when i compile it it just returns the values of log 1,3,2 , and i wanto log 2 to be before the 3 Log.d("1", "antes de validar"); DocumentReference docRef = db.getDb().collection("Usuarios").document(Correo); docRef.get().addOnCompleteListener(new OnCompleteListener<DocumentSnapshot>() {

问题 I'm studying Java and learning how to use mouse listener. However here is a very simple code which doesn't work. import acm.program.*; import java.awt.event.*; public class Test extends GraphicsProgram{ public void run() { isMouseClicked= false; addMouseListeners(); while (true) { if (isMouseClicked) { println ("OK"); break; } } } public void mouseClicked(MouseEvent e) { isMouseClicked= true; } private boolean isMouseClicked; } The idea is very simple. "isMouseClicked" is false at the

问题 Good day to you all. I'm experiencing quite an issue right now with my simple Android application. The 2 main elements I have are a bound Service and a main Activity . I want the Activity to display (through TextViews) the fact that the Service found something. To do so, I declare a Listener interface within the Service, handle a list of listeners registered to him and notify the listeners with a specific method. MyService void notifyNewElement(){ for (Listener listener : listeners) {

问题 Below is the config of job in etl.xml <batch:job id="procuerJob"> <batch:step id="Produce"> <batch:partition partitioner="partitioner"> <batch:handler grid-size="${ partitioner.limit}"></batch:handler> <batch:step> <batch:tasklet> <batch:chunk reader="Reader" writer="kafkaProducer" commit-interval="20000"> </batch:chunk> <batch:listeners> <batch:listener ref="producingListener" /> </batch:listeners> </batch:tasklet> </batch:step> </batch:partition> </batch:step> </batch:job> below is the code

问题 I have following code: public class StateListener : PhoneStateListener { StateListener phoneStateListener = new StateListener(); TelephonyManager telephonyManager = (TelephonyManager)GetSystemService(Context.TelephonyService); telephonyManager.Listen(phoneStateListender, PhoneStateListenerFlags.CallState); public void onCallStateChanged(CallState state, String incomingNumber) { base.OnCallStateChanged(state, incomingNumber); switch (state) { case CallState.Ringing: break; case CallState

问题 I was using log4j 1.2 earlier and I recently migrated to log4j 2.0 I was using below listener class in log4j 1.2 in web.xml <listener> <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class> </listener> This listener class is removed after log4j 2.0 and I want replacement of this listener class which allow me to change logger level at runtime and update without restarting tomcat service in my web application. I have tried below listener but this is also restarting

问题 Can someone explain the logic on how to handle this matter: I have a fragment that after a WebSocket call inflates 2 Recyclerviews. Child Recyclerview is nested to Parent Recyclerview and the parent adapter calls the child adapter. I want to put an Interface for a click listener which handles the click in the Child Items in the Fragment. Where should I put the interface and which class should implement it? 回答1: What you're trying to do has been done multiple times. There are various

问题 Can someone explain the logic on how to handle this matter: I have a fragment that after a WebSocket call inflates 2 Recyclerviews. Child Recyclerview is nested to Parent Recyclerview and the parent adapter calls the child adapter. I want to put an Interface for a click listener which handles the click in the Child Items in the Fragment. Where should I put the interface and which class should implement it? 回答1: What you're trying to do has been done multiple times. There are various