Recover and calculate programmatically generated EditText values

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Recover and calculate programmatically generated EditText values

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#1 by (1 votes)
#2 by (1 votes)

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I'm creating an app to calculate an arithmetic mean of N values. There is an add button, when it is clicked it will generate EditText programmatically. And it will have a calculate button, when it is clicked, it should show the average of the EditText created.

But I'm not able to retrieve the values of these EditText to use on the calculate button. Below is my java code:

private ArrayList<EditText> listEdit = new ArrayList<>();
botaoAdd.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            aviso.setVisibility(View.GONE);
            LinearLayout layout = (LinearLayout) view.findViewById(R.id.container); //criar o container(pai)
            listEdit.add(new EditText(getActivity()));
            listEdit.get(count).setBackgroundColor(Color.WHITE);
            listEdit.get(count).setHint("Media " + count);
            listEdit.get(count).setGravity(Gravity.CENTER);
            listEdit.get(count).setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_DECIMAL);

            layout.setGravity(Gravity.CENTER);
            LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(300,100); // tamanho do container
            layoutParams.setMargins(0,15,0,0);
            layout.addView(listEdit.get(count),layoutParams); //adicionando a view ao container
            count++;
        }
    });

botaoCalc.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            for (int i =0; i < listEdit.size(); i++){
                String texto = listEdit.get(i).getText().toString();
                if(!texto.isEmpty()){
                    Double valor = Double.parseDouble(texto);
                    Double result = 0.0;
                    result = result + valor;
                    Double media = result/(i+1);
                    resultado.setText("media " + media);
                }
            }
        }
    });

As I've read in other posts here, they have always recommended that you save the values of EditText to ArrayList to use it. The problem with this code is that it is not adding the values, it is only taking the value of the last EditText and dividing by the number of EditText s (in this case, i of for ). >

java android edittext

asked by anonymous 01.11.2017 / 05:07

2 answers

1

List<EditText> colecaoEditText = newArrayList<EditText>();
int vezesClicados = 0;

addButton.setOnClickListener(new OnClickListener(...){
    EditText editText = new EditText(MinhaActivity.this);

    meuContainer.addChild(editText);
    colecaoEditText.add(editText);
    vezesClicados++;
});// Pode adicionar quantos quiser e ele estará no ArrayList

//vamos pegar o valor de todos com um loop (abaixo)
for(int i = 0; i <= vezesClicados; i++){
    //aqui você pega o valor dos editTexts pelo índice dele no array e faz o que quiser
    colecaoEditText.get(i).getText().toString(); //aqui eu só mostrei como vc pegaria o texto do editText
}

01.11.2017 / 15:18

Consume webservice of address queries of a given city BigDecimal - Error NumberFormatException

score 1 · Accepted Answer

The mean has to be calculated outside the loop:

Double total = 0.0;
for (int i = 0; i < listEdit.size(); i++) {
  String texto = listEdit.get(i).getText().toString();
  if (!texto.isEmpty()) {
    total += Double.parseDouble(texto);
  }
}
Double media = total / listEdit.size();
resultado.setText("media " + media);