Im trying to get my enemies to follow my main-character of the game (2D), but for some reason the game starts lagging like crazy when I do it the way I want to do it, and the following-part dosnt work 100% either, its just 1/24 enemies that comes to my sprite, the other 23 move towards it but stay at a certain point. Might be a poor explenation but dont know how else to put it.

Code for moving my enemies:

    private int enemyX(){
    int x = 0;
    for (int i = 0; i < enemies.size(); i++){
        if (controls.pointerPosition.x > enemies.get(i).getX()){//pointerPosition is the position of my main-sprite.
            x = 5;
        }
        else{
            x=-5;               
        }
        Log.d(TAG, "happyX HERE: " + controls.pointerPosition.x);
        Log.d(TAG, "enemyX HERE: " + enemies.get(i).getX());
    }
    return x;
}

private int enemyY(){
    int y = 0;
    for (int i = 0; i < enemies.size(); i++){
        if (controls.pointerPosition.y > enemies.get(i).getY()){ 
            y = 5;
        }
        else{
            y=-5;               
        }
    }
    return y;
}

I send it to the update-method in my Enemy-class:

    private void drawEnemy(Canvas canvas){
    addEnemies(); // a method where I add enemies to my arrayList, no parameters except bitmap.
    for(int i = 0; i < enemies.size(); i++){
        enemies.get(i).update(enemyX(), enemyY());
    }
    for(int i = 0; i < enemies.size(); i++){
        enemies.get(i).draw(canvas);
    }
}

and finally, the update-method itself, located in my Enemy-class:

    public void update(int velX, int velY) {    
    x += velX; //sets x before I draw
    y += velY; //sets y before I draw
    currentFrame = ++currentFrame % BMP_COLUMNS;
}

So can any1 figure out why it starts lagging so much and how I can fix it? Thanks for your time!