达到某个值后如何触发声音

Question

How can I adjust the source code so that when I level up, the level up sound should only trigger once?

Now the Sound is reproduced all the time and doesn't stop but I want the level up sound to only trigger a single time for each level up.

private void Run(){
    int a = 0;
    do {
        showEmerald();
        a++;
    }while (a<15);//show more emeralds
    vanishEmerald();
    updateScreen();
    handler.postDelayed(this,  600);

    if (points>=25){
        level=2;
        levelup.start();
    }

Answer 1

The way you defined it once it hits over 25 points the If-clause is always fullfilled and will trigger the levelup. My advise would be to either define If outside the loop or / and reset the counter of the points after the levelup has been triggered.

Something like this:

if (points>=25){
    level++;
    levelup.start();
    points = 0
}

This way you don't have to increase the level manually everytime and it just increments further everytime by one.