Android Studio EditText

Press the + button to go up 3000 - press the button to go down It's a program where the total amount is calculated according to the button pressed It's a hassle to press the button, so I want to make it count even if I type a number in the edit text right away For example, if you hit 10, the total amount is calculated as 30,000 won.

package com.example.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {
    Button bh1, bh2, bca;
    TextView tr;
    EditText th;
    String sh;
    int nh;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        bh1 = (Button)findViewById(R.id.button);
        bh2 = (Button)findViewById(R.id.button2);
        bca = (Button)findViewById(R.id.button3);

        th=(EditText)findViewById(R.id.editText);


        tr=(TextView)findViewById(R.id.textView);

        nh = 0;

        bh1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                nh = nh + 1;
                th.setText(nh+"");

            }
        });
        bh2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                nh = nh - 1;
                th.setText(nh+"");

            }
        });
        bca.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                tr.setText ("Total amount:"+(nh*3000)+"circle");

            }
        });
    }
}

I did it like this, but the buttons are calculated, but if you type numbers in EightText, you can'tcrying Please help meㅠ<

android-studio edittext

2022-09-22 13:07

1 Answers

Just as you added a responding listener when you press the button, I think you can add a responding listener to the edit text every time the text changes.


th.addTextChangedListener(new TextWatcher() {
    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {
        // When there is a change in the text being entered
        nh = parseInt(s.toString());
        tr.setText ("Total amount:"+(nh*3000)+"circle");
    }

    @Override
    public void beforeTextChanged(CharSequence s, int start, int count, int after) { }

    @Override
    public void afterTextChanged(Editable arg0) { }
});


int parseInt(String numberString) {
    try {
        return Integer.parseInt(numberString);     
    } } catch (NumberFormatException nfe) {
        return 0;
    }
}

2022-09-22 13:07

If you have any answers or tips

Popular Tags

python x 4647

android x 1593

java x 1494

javascript x 1427

c x 927

c++ x 878

ruby-on-rails x 696

php x 692

python3 x 685

html x 656