TextView ID не может решить при привязке ⇐ Android

[Anonymous]

Новый вопрос здесь. Я получаю сообщение об ошибке символа для этой строки, на самом деле мне даже не нужно запускать код, IDE ранее жалуется. TextViewFirst неизвестен. < /p>
TextView textView = binding.textviewFirst;
< /code>
Вот файл mainactivity.java: < /p>
package com.example.rp;

import android.os.Bundle;

import com.google.android.material.snackbar.Snackbar;

import androidx.appcompat.app.AppCompatActivity;

import android.view.View;

import androidx.navigation.NavController;
import androidx.navigation.Navigation;
import androidx.navigation.ui.AppBarConfiguration;
import androidx.navigation.ui.NavigationUI;

import com.example.rp.databinding.ActivityMainBinding;

import android.view.Menu;
import android.view.MenuItem;

import com.example.rp.ApiService;
import com.example.rp.Post;

import java.util.List;

import retrofit2.Retrofit; // Import Retrofit
import retrofit2.converter.gson.GsonConverterFactory;

import retrofit2.Call; // Import Call
import retrofit2.Callback; // Import Callback
import retrofit2.Response; // Import Response

import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

private AppBarConfiguration appBarConfiguration;
private ActivityMainBinding binding;
private TextView textView;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

binding = ActivityMainBinding.inflate(getLayoutInflater());
setContentView(binding.getRoot());
//TextView textView = findViewById(R.id.textview_first);
TextView textView = binding.textviewFirst;
setSupportActionBar(binding.toolbar);

NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_content_main);
appBarConfiguration = new AppBarConfiguration.Builder(navController.getGraph()).build();
NavigationUI.setupActionBarWithNavController(this, navController, appBarConfiguration);

binding.fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAnchorView(R.id.fab)
.setAction("Action", null).show();
}
});

Retrofit retrofit = new Retrofit.Builder()
.baseUrl("https://jsonplaceholder.typicode.com/") // Base URL
.addConverterFactory(GsonConverterFactory.create()) // Gson converter for JSON parsing
.build();

// Create the API service instance
ApiService apiService = retrofit.create(ApiService.class);

// Make the network request
Call call = apiService.getPosts();

// Execute the call (synchronously for simplicity here)
call.enqueue(new Callback() {
@Override
public void onResponse(Call call, Response response) {
if (response.isSuccessful()) {
List posts = response.body(); // Get the list of users
try {
textView.setText(posts.toString());

} catch (Exception e) {
e.printStackTrace();
}
//
// Handle the response here
}
}

@Override
public void onFailure(Call call, Throwable t) {
// Handle failure
}
});
}

@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
public boolean onSupportNavigateUp() {
NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_content_main);
return NavigationUI.navigateUp(navController, appBarConfiguration)
|| super.onSupportNavigateUp();
}
}
< /code>
Сам Textview определяется в fragment_first.xml < /p>










< /code>
Странно то, что он может решить, когда мне это нравится: < /p>
//TextView textView = findViewById(R.id.textview_first);


Подробнее здесь: https://stackoverflow.com/questions/795 ... ew-binding