How to set a Textview with a DOUBLE variable?

Question

I’m trying to set the variable txtMedia1 with the value of the variable media1. I did so, but the Android Studio indicates that I have to change txtMedia1 to double or media1 for TextView:

package com.app.jeffersonalencar.composicao;

import android.renderscript.Double2;
import android.renderscript.Sampler;
import android.support.annotation.StringDef;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.Button;
import android.widget.TextView;

public class act_mains extends AppCompatActivity implements View.OnClickListener{

    //Declarando variáveis de coleta de medida
    public EditText edtTxt1, edtTxt2, edtTxt3;
    //Declarando campo de visualização da média por parte
    public TextView txtMedia1;
    //Declarando botão
    public Button btnMedia1;


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

        //Setando os valores dos campos de coleta para as variáveis
        edtTxt1 = (EditText) findViewById(R.id.edtTxt1);
        edtTxt2 = (EditText) findViewById(R.id.edtTxt2);
        edtTxt3 = (EditText) findViewById(R.id.edtTxt3);


    }

    public void onClick(View V){
        double medida1 = Double.parseDouble(edtTxt1.getText().toString());
        double medida2 = Double.parseDouble(edtTxt2.getText().toString());
        double medida3 = Double.parseDouble(edtTxt3.getText().toString());


        double media1 = (medida1 + medida2 + medida3)/3;

        //Terminar a briga e colocar o valor no TextView
        String media2 = String.valuesOf(media1);
        txtMedia1 = (TextView) getText(R.id.media2) ;

    }


}

Realizing what the Android Studio still asks yes of error.

Answer 1

I use a similar conversion in an app that has developed. Suitable for your example, would be as follows:

txtMedia.setText(Double.toString(media1));

Answer 2

There are many ways you can do this:

Form 1

String valueDouble= Double.toString(media1);
txtMedia1.setText(valueDouble);

Form 2

txtMedia1.setText(""+media1);

Form 3

txtMedia1.setText(String.valueOf(media1));

Form 4

Here would be basically equal to Form 3, where you can use the format to define the format you want, depending on how many boxes you show after the comma. See:

txtMedia1.setText(String.format("%.2f", value));