Adding EditText to a layout in android with for-loop

Question

let me introduce you to my issue:

I have just begun with programming for android. Now I want to create a little app that asks for the amount of players and then a new screen pops up with as many as EditText fields as the amount of players.

Example: I type in the amount of players (4), then I press send, the next screen is filled with 4 EditText fields asking for the players names.

Here's the code:

Method that asks for the amount of players:

    public void gaVerder (View view){
    Intent i = new Intent(getApplicationContext(), NamenPersonen.class);

    String aantal = e.getText().toString();
    i.putExtra("aantal", aantal);

    startActivity(i);
}

Method that delivers the EditText fields:

LinearLayout ll;
EditText editText;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);


    Intent intent = getIntent();

    int aantal = Integer.parseInt(intent.getStringExtra("aantal"));


    List<EditText> myList = new ArrayList<EditText>();

    EditText myEt1 = new EditText(this);
    myEt1.setHint("Geef uw naam in.");
    myList.add(myEt1);


    for(int i=0;i<aantal;i++)
    {
        editText = new EditText(this);
        editText.setHint("Geef een naam in");


        ll.addView(editText);
    }


    setupActionBar();
    setContentView(R.layout.namenpersonenxml);
}

It's the for-loop part and adding it to the lay-out that isn't working. Also I can't figure out how to debug it, I'm used to debugging Java applications in Netbeans (for android I'm using Eclipse).

Raghunandan · Accepted Answer · 2014-02-04 14:21:02Z

4

You need to initialize LinearLayout ll.

 LinearLayout ll;
 EditText editText;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.namenpersonenxml);
 ll = (LinearLayout) findViewById(R.id.linearlayout);
 Intent intent = getIntent();
 int aantal = Integer.parseInt(intent.getStringExtra("aantal"));
 for(int i=0;i<aantal;i++)
 {
    editText = new EditText(this);
    editText.setHint("Geef een naam in");
    ll.addView(editText);
 }

answered Feb 4, 2014 at 14:21

Raghunandan

134k26 gold badges232 silver badges261 bronze badges

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

2 Comments

stijn.aerts Over a year ago

Allright, thanks! Tried so many things, and once again a simple line of code does it! Unbelievable :p Thanks guys! It is working now.

Raghunandan Over a year ago

@user3103015 no prble,. glad to help. Good luck!

Manas Bajaj · Accepted Answer · 2014-02-04 14:28:44Z

0

You forgot to initialize your LinearLayout in which you're adding your EditTexts. At the moment, the program doesn't know which layout you would like to add your views to. So, in your onCreate() method, you should add the following code:

ll = (LinearLayout) findViewById(R.id.'nameOfYourLayout');

answered Feb 4, 2014 at 14:28

Manas Bajaj

1,1333 gold badges18 silver badges26 bronze badges

Collectives™ on Stack Overflow

Adding EditText to a layout in android with for-loop

2 Answers 2

2 Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related