how to randomize the order of buttons in Android

Question

I've read about collections to randomize the order of an object. With that, I'd like to try to randomize my buttons in my android application.

Here a chunk of code:

 Button[] bObject = new Button[6];
 private void getCorrectObject() {
    // TODO getCorrectObject

    List<Integer> objects = new ArrayList<Integer>();
        objects.add(0);
        objects.add(1);
        objects.add(2);
        objects.add(3);
        objects.add(4);

    // Shuffle the collection
    Collections.shuffle(objects);

    bObject[objects]; // I'm having trouble implementing the shuffle logic here.


}

SO any helpful response is truly appreciated. Thanks.

Answer 1

first

Button[] bObject=new Button[6];

second:

for(int i=0;i<objects.size;i++)
   bObject[i]=objects.get(i);

or:

for(Object obj : objects)
 bObject[i]=obj;

Answer 2

I think this is what you're looking for. Shuffling the elements in the bObject array.

Collections.shuffle(Arrays.asList(bObject));

Answer 3

I had a same problem (shuffle buttons) and i come up with an easy solution I just used an array of integer numbers of buttons ids and simple shufle. In my case was that enough. It's simple and u get the same result.

Integer[] a =  { 0x7f090049, 0x7f09004b, 0x7f09004c, 0x7f090048};
Collections.shuffle(Arrays.asList(a));

button1 = (Button)findViewById(a[0]);
button2 = (Button)findViewById(a[1]);
button3 = (Button)findViewById(a[2]);
button4 = (Button)findViewById(a[3]);

I hope this will help. Regards !! (srry for my broken english)

Answer 4

got it solved manually and then tried to get it solved dynamically aswell. got a nice idea that you can do it with a second arraylist.

List<Integer> objects = new ArrayList<Integer>();
            objects.add(0);
            objects.add(1);
            objects.add(2);
            objects.add(3);
            objects.add(4);

        // Shuffle the collection
    Collections.shuffle(objects);

    List<Button> buttons = new ArrayList<Button>();
    buttons.add((Button)findViewById(R.id.button0));
    buttons.add((Button)findViewById(R.id.button1));
    buttons.add((Button)findViewById(R.id.button2));
    buttons.add((Button)findViewById(R.id.button3));
    buttons.add((Button)findViewById(R.id.button4));

    for (int i = 0; i < objects.size(); i++) {
        buttons.get(i).setText(objects.get(i).toString());
    }

does this help you?

EDIT: yes let us solve this in chat. im also curious how this can be done!