android - 我这样写对吗？ [小白]

Question

 private final int NUM_SOUND_FILES = 4;
 private Random rnd = new Random(4);
 private int mfile[] = new mfile[NUM_SOUND_FILES]; //the second mfile 
                                                      //reports error everytime
 mfile[0] = R.raw.sound1;
 mfile[1] = R.raw.sound2;
 mfile[2] = R.raw.sound3;
 mfile[3] = R.raw.sound4;

 int sndToPlay = rnd.nextInt(NUM_SOUND_FILES);

不管我怎么写，我总是遇到语法错误。当我的语法正确时，它会强制关闭。这是所谓的“正确”语法但强制关闭:

private final int NUM_SOUND_FILES = 4;
private Random rnd = new Random(4);
private int mfile[] = new int[NUM_SOUND_FILES];{
mfile[0] = R.raw.sound1;
mfile[1] = R.raw.sound2;
mfile[2] = R.raw.sound3;
mfile[3] = R.raw.sound4;}

Answer 1

我不是 android 开发人员，但第 3 行的数组声明对我来说不合适，通常它是一个 int 类型的数组，声明如下:

private int[] mfile = new int[NUM_SOUND_FILES];