324 questions
Java code package com.example.myapplication;import androidx.appcompat.app.AppCompatActivity;import android.os.Bundle;import com.google.firebase.database.DataSnapshot;import com.google.firebase.databas...
I'm copying this, but there's a problemㅠ
public class MainActivity extends AppCompatActivity { Button button1; EditText edittext1;@Overrideprotected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentVie...
public class MainActivity extends AppCompatActivity { Button button1; EditText edittext1; EditText edittext2; RecyclerView listview1; @Override protected void onCreate(Bundle savedInstanceState) { su...
Hello, I'm a beginner who just started studying development.I'm making a random drawing app for practice, and I'm practicing applying the code I studied in Java for the first time. But I'm confused be...
Using the socket class, I want to check the ip address that is currently connected regardless of Wi-Fi or LTE. try { Socket mysocket = new Socket(www.google.com, 80); String Addr = mysocket.getL...
Hello, brothers. Even if I make an app and release it, you can see itThe purple frame (?) that displays the name of the app file is continuously visible, so the completeness of the app is reduced due ...
String[] items = { less than 4 months, 4 to 6 months, 7 to 12 months, neutralized grave, General grave, Exercise grave, Roh grave, Obese grave};@Overrideprotected void onCreate(Bundle savedInstanceSt...
I'm making an application to calculate the amount of cat food. I'm having a hard time with a spinner.Build it, run the emulator, and it's just stored in the spinner as the value of the first arrayAfte...
#include <iostream>#include <vector>#include <string>#include <list>#include <algorithm>using namespace std;enum Menu { continent_search = 1, hwak, die, wanchi, EXIT };en...
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