Getting EditText name to array variable android

Question

I am developing an application which randomly chooses a string from the arrays.xml file. Every string has 3 variables (%1$s, %2$s, %3$s). The first is taken from EditText, the second from Spinner (gets from array) and the third from an EditText.

I tried to use String.format but it didn't work, the logcat gives NullPointerException.

<string-array name="blabla"> 
<item>Blabla %1$s blabla %2$s blablabla %3$s.</item>
<item>blablabla %1$s blablabla %3$s blabl %2$s.</item>
</string-array>

and the Java code:

public void invia(View v){
    Spinner eta = (Spinner) findViewById(R.id.etaspin);
    String etastring = eta.getSelectedItem().toString().trim();

    EditText nome = (EditText) findViewById(R.id.nomeins);
    String nomestring = nome.getText().toString();

    EditText citta = (EditText) findViewById(R.id.cittains);
    String cittastring = citta.getText().toString();
    Resources res = getResources();

    String tot = res.getString(R.array.blabla, etastring, nomestring, cittastring);

    tot = myString[rgenerator.nextInt(myString.length)];
     TextView stiusatxt = (TextView) findViewById(R.id.stiusa);
     stiusatxt.setText(tot);
}

As per now the only thing that works is the random string display but none of the variables work.

No, the NPE was thrown when I was using the String.format from Android Developers website — user2606414
– user2606414, Commented Apr 9, 2015 at 17:54
Android Developers website ?? This line res.getString(R.array.blabla, etastring, nomestring, cittastring); is to getString, but u r using string-array — yummy
– yummy, Commented Apr 9, 2015 at 17:57

rahul.taicho · Accepted Answer · 2015-04-09 18:40:56Z

1

Try doing it this way

int random = new Random().nextInt(2);
String tot = String.format(res.getStringArray(R.array.blabla)[random], etastring, nomestring, cittastring);

Your code is giving problems because you are trying to read a string from an array using getString() instead of getStringArray()

answered Apr 9, 2015 at 18:40

rahul.taicho

1,3791 gold badge8 silver badges18 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Getting EditText name to array variable android

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related