How do I get the value of a selected checkbox in mainActivity3 and 4 and show this selected item in a textView in main Activity1?

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How do I get the value of a selected checkbox in mainActivity3 and 4 and show this selected item in a textView in main Activity1?

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I'm doing a college job where I have to develop an application for ordering in a bar, I've created 5 activity where the first one is a home screen and the other checkboxes with orders, how do I get the selected items in the checkbox of all main activity and show them in mainactivity1? And also how do I determine a "price" for each checkbox where in the last activity I can show the total value of all checkboxes selected?

android

asked by anonymous 28.03.2018 / 01:23

1 answer

Insert additional data in Firebase Hide component in first record (DBCtrlGrid)

score 0 · Answer 1

To get the value of the checkbox, you check if it is checked and assigns a reference value, eg: [x] Beer:

   String valores;
   if(cerveja.isChecked()){
      valores += "1";
   }

So if you have another check you will add the values, but then you say: As this 1 can identify which beer was marked, as it has more checkbox the string can be: values="12354"; then as each value represents an item, you do:

  //Isso aqui na outra activity
  if(valores.contais("1")){
     //cerveja tava marcado
  }

But if you want to get the checkbox text you do:

 String valor = checkbox.getText().toString();

To pass values between activities you use this:

 Intent it = new Intent(context, proximaAcitivy.class);
          //Cada chave deve ser unica
          it.putExtra("chave", valor);
          startActivity(it);

In the other activity to recover you do:

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

 Intent intent = getIntent();
 String text = intent.getStringExtra("chave");

 }

On the prices, every checkbox is checked, you save the values and move to another activity and sum to the next value, make the next msm until you reach the last