SetText is not working for TextView. In my code textValue.setText(Integer.toString(newValue)); is giving error as error: <identifier> expected

Question

package com.example.menewapp;

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.menewapp.databinding.ActivityMainBinding;

import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    private AppBarConfiguration appBarConfiguration;
    private ActivityMainBinding binding;

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

        binding = ActivityMainBinding.inflate(getLayoutInflater());
        setContentView(binding.getRoot());

        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() {
            TextView textValue = findViewById(R.id.text_value);
            String stringvalue = textValue.getText().toString();
            int old = Integer.parseInt(stringvalue);
            int newValue = MyNewWorker.doubleTheValue(old);
            textValue.setText(Integer.toString(newValue));

            @Override
            public void onClick(View view) {
                Snackbar.make(view, "old " + old + "is changed to " + newValue, Snackbar.LENGTH_LONG)
                        .setAction("Action", null).show();
            }
        });
    }


     

SetText is not working for TextView. In my code textValue.setText(Integer.toString(newValue)); is giving error as error: expected. Please help me. textValue.getText is working but textValue.setText is not. i am new to android application development and not getting clue on how to solve this

Answer 1

Your code that reads and manipulates the text_value should be included in the onClick() method that is inside the OnClickListener()

    binding.fab.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View view) {
            TextView textValue = findViewById(R.id.text_value);
            String stringValue = textValue.getText().toString();
            int originalValue = Integer.parseInt(stringValue);
            int newValue = MyWorker.doubleTheValue(originalValue);
            textValue.setText(Integer.toString(newValue));
            Snackbar.make(view, "old " + old + "is changed to " + newValue, Snackbar.LENGTH_LONG).setAction("Action", null).show();
        }
    });

I came across this exact problem while going through the Pluralsight course Understanding Android Applications

Answer 2

Instead of Integer.toString(newValue) use String.valueOf()

textValue.setText(String.valueOf(newValue))

Answer 3

you can give a try to a CGo-free port of sqlite: https://pkg.go.dev/modernc.org/sqlite