How can I add a Rectangle into Array?

Question

I'm new in libgdx and I have problems to add into my Array a rectangle ("two"). I can't detect collision after adding it and getting it. My code is bellow:

...

public class MyGdxGame implements ApplicationListener
{
    Texture texture;
    SpriteBatch batch;
    Rectangle one, two;

    float x1=0,x2;
    float y1, y2;

    Array <Rectangle> array;

In the Create():

        texture = new Texture(Gdx.files.internal("android.jpg"));
        batch = new SpriteBatch();

        x2 = Gdx.graphics.getWidth()-40;
        y1 = y2 = (Gdx.graphics.getHeight()/2)-15;

        one = new Rectangle();
        two = new Rectangle();

        one.set(x1, y1, 40, 30);
        two.set(x2, y2, 40, 30);

        array = new Array <Rectangle>();
        array.add(two);

In the Renderer():

...
        batch.begin();
        batch.draw(texture, x1, y1, 40, 30);
        batch.draw(texture, x2, y2, 40, 30);

        try
        {
            Thread.sleep(10);

            x1 += 2;
            x2 -= 2;

            one.set(x1, y1, 40, 30);
            two.set(x2, y2, 40, 30);

here is the problem, 'cause "one" rectangle doesn't detect the collision with the "two" rectangle:

if(one.overlaps(array.get(1)))
            {
                x1 = 0;
                x2 = Gdx.graphics.getWidth()-40;
            }
        }
        catch(Exception e){}

        batch.end();

Can anybody help me please?

Answer 1

You are adding only 1 element into your array.

array.add(two);

To get to this object you should use: array.get(0); instead of array.get(1); Firstly I would suggest using List, and as you probably want to have multiple rectangles to check collision with them:

List<Rectangle> myList = new ArrayList<>();
myList.add(two);
for(Rectangle rect : myList) {
    if(one.overlaps(rect)) {
        //...
    }
}