
Handler.post() vs runOnUiThread() vs AsyncTask.execute() activity_main.xml MainActivity.java package com.jwsoft.javaproject; import androidx.appcompat.app.AppCompatActivity; import android.os.AsyncTask; import android.os.Bundle; import android.os.Handler; import android.view.View; import android.widget.Button; import android.widget.TextView; public class MainActivity extends AppCompatActivity { ..

activity_main.xml MyAsyncTask.java package com.jwsoft.javaproject; import android.os.AsyncTask; import android.widget.TextView; public class MyAsyncTask extends AsyncTask { TextView tvText; public MyAsyncTask(TextView tvText) { this.tvText = tvText; } @Override protected void onPreExecute() { super.onPreExecute(); } @Override protected Boolean doInBackground(Void... voids) { for (int i=1; i

activity_main.xml MainActivity.java package com.jwsoft.javaproject; import androidx.appcompat.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.TextView; public class MainActivity extends AppCompatActivity { TextView tvText; Button btnChange; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(..

build.gradle (Module: app) dependencies { // Retrofit2 implementation 'com.squareup.retrofit2:retrofit:2.7.1' implementation 'com.squareup.retrofit2:converter-gson:2.7.1' implementation 'com.squareup.okhttp3:logging-interceptor:4.3.1' } AndroidManifast.xml 인터넷 권한 추가. RetrofitAPI.java package com.jwsoft.javaproject; import com.google.gson.JsonObject; import java.util.List; import retrofit2.Call; ..

activity_main.xml MainActivity.java package com.jwsoft.javaproject; import androidx.appcompat.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.TextView; public class MainActivity extends AppCompatActivity { TextView tvText; Button btnChange; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(..
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