Question

that is the exact code then i have a switch for case 0: and case 1: it seems that the case 1: is coming out every time, i would like to have a 50/50 chance of 0 or 1 coming out is this the correct way or should i use 1.5 or how exactly does this work?

talka = (int)(Math.random() * 1);
        switch(talka)
        {

        case 0:
        {
            talk.setAnimationListener(this);
            talk.playtimes(1,24);
            startService(new Intent(this, love1.class));
            break;
        }
        case 1:
        {
            talk.setAnimationListener(this);
            talk.playtimes(1,12);
            startService(new Intent(this, love2.class));
            break;
        }
        }

Answer 1

The problem has to do with the way the cast works.

In may test, Java was basically “trimming” the decimal result off and simply taking the “integer” component. However, if I rounded the result, I got it flipping between 0 and 1.

Have a play

int ones = 0;
int zeros = 0;
for (int index = 0; index < 100; index++) {

    double rand = Math.random() * 1;
    if (Math.round(rand) == 1) {
        ones++;
    } else {
        zeros++;
    }
    System.out.println(rand + " - " + (int)Math.round(rand) + " - " + (int)Math.random() * 1);

}

System.out.println("Ones = " + ((float)ones / 100f));
System.out.println("Zeros = " + ((float)zeros / 100f));

It my simple test, I was getting around the 50/50 mark (+/-)

As pointed out by Hovercraft, better to use java.util.Random in this case.