java - 我在 susbstring 管理中遇到错误

Question

我将创建一个带有 4 位数字的随机数，并要求用户输入 4 位数字。用户将尝试猜测。我正在尝试制作一个游戏，其中用户输入的任何数字与程序生成的任意数量的随机数相匹配，这将通知用户并要求用户删除并重新猜测该值用户输入。为此，我尝试将用substring方法输入的数字进行分解，检查数字是否匹配，但程序报错。有谁知道我做错了什么？这是我写的代码

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    public static final int MAX_NUMBER = 10;
    public static final Random randomNumberOne = new Random();
    public static final Random randomNumberTwo = new Random();
    public static final Random randomNumberThree = new Random();
    public static final Random randomNumberFour = new Random();
    private TextView msgTvOne, msgTvTwo, msgTvThree, msgTvFour;
    private EditText editText1;
    private EditText editText2;
    private EditText editText3;
    private EditText editText4;
    private Button button_onayla;
    private int NumberToFindOne,NumberToFindTwo,NumberToFindThree,NumberToFindFour, numberTries;
    private String s;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        msgTvOne = (TextView) findViewById(R.id.gameTxtViewOne);
        editText1 = (EditText) findViewById(R.id.editText1);
        button_onayla = (Button) findViewById(R.id.button_onayla);
        button_onayla.setOnClickListener(this);

        newGame();
    }

    private void newGame() {
        NumberToFindOne = randomNumberOne.nextInt(10);
        NumberToFindTwo = randomNumberTwo.nextInt(10);
        NumberToFindThree = randomNumberThree.nextInt(10);
        NumberToFindFour = randomNumberFour.nextInt(10);
        msgTvOne.setText(R.string.begining_msg);
        editText1.setText("");
        numberTries = 0;
    }


    @Override
    public void onClick(View view) {
        if (view == button_onayla) {
            button_onayla();
        }
    }

    private void button_onayla() {
        int nOne = Integer.parseInt(editText1.getText().toString());
        numberTries++;
        String subs = Integer.toString(nOne);
        String sOne = subs.substring(1, 2);
        String sTwo = subs.substring(2, 3);
        String sThree = subs.substring(3, 4);
        String sFour = subs.substring(4);

        int iOne = Integer.parseInt(sOne);
        int iTwo = Integer.parseInt(sTwo);
        int iThree = Integer.parseInt(sThree);
        int iFour = Integer.parseInt(sFour);

        if (iOne == NumberToFindOne && iTwo == NumberToFindTwo && iThree == NumberToFindThree && iFour == NumberToFindFour) {
            Toast.makeText(this, "Tebrikler, tahminin doğru! \n Deneme Sayısı: " + numberTries , Toast.LENGTH_SHORT).show();
        }else if (iOne != NumberToFindOne && iTwo != NumberToFindTwo && iThree != NumberToFindThree && iFour != NumberToFindFour) {
            msgTvOne.setText("Herhangi bir sayı eşleşmedi.");
            editText1.getText().clear();
        }else if (iOne == NumberToFindOne && iTwo == NumberToFindTwo && iThree == NumberToFindThree || iOne == NumberToFindOne && iTwo == NumberToFindTwo && iFour == NumberToFindFour
                || iTwo == NumberToFindTwo && iThree == NumberToFindThree && iFour == NumberToFindFour) {
            msgTvOne.setText("Herhangi üç sayı eşleşti.");
            editText1.getText().clear();
        }else if (iOne != NumberToFindOne && iTwo != NumberToFindTwo && iThree != NumberToFindThree || iOne != NumberToFindOne && iTwo != NumberToFindTwo && iFour != NumberToFindFour
                || iTwo != NumberToFindTwo && iThree != NumberToFindThree && iFour != NumberToFindFour) {
            msgTvOne.setText("Herhangi bir sayı eşleşmedi.");
            editText1.getText().clear();
        }else if (iOne == NumberToFindOne && iTwo == NumberToFindTwo || iOne == NumberToFindOne && iThree == NumberToFindThree
                || iOne == NumberToFindOne && iFour == NumberToFindFour || iTwo == NumberToFindTwo && iThree == NumberToFindThree
                || iTwo == NumberToFindTwo && iFour == NumberToFindFour || iThree == NumberToFindThree && iFour == NumberToFindFour){
            msgTvOne.setText("Herhangi iki sayı eşleşti.");
            editText1.getText().clear();
        }else if (iOne != NumberToFindOne && iTwo != NumberToFindTwo || iOne != NumberToFindOne && iThree != NumberToFindThree
                || iOne != NumberToFindOne && iFour != NumberToFindFour || iTwo != NumberToFindTwo && iThree != NumberToFindThree
                || iTwo != NumberToFindTwo && iFour != NumberToFindFour || iThree != NumberToFindThree && iFour != NumberToFindFour){
            msgTvOne.setText("Herhangi bir sayı eşleşmedi.");
            editText1.getText().clear();
        }else if (iOne == NumberToFindOne && iTwo != NumberToFindTwo && iThree != NumberToFindThree && iFour != NumberToFindFour) {
            msgTvOne.setText("Herhangi bir sayı eşleşti.");
            editText1.getText().clear();
        }else if (iOne != NumberToFindOne && iTwo == NumberToFindTwo && iThree != NumberToFindThree && iFour != NumberToFindFour) {
            msgTvOne.setText("Herhangi bir sayı eşleşti.");
            editText1.getText().clear();
        }else if (iOne != NumberToFindOne && iTwo != NumberToFindTwo && iThree == NumberToFindThree && iFour != NumberToFindFour) {
            msgTvOne.setText("Herhangi bir sayı eşleşti.");
            editText1.getText().clear();
        }else if (iOne != NumberToFindOne && iTwo != NumberToFindTwo && iThree != NumberToFindThree && iFour == NumberToFindFour) {
            msgTvOne.setText("Herhangi bir sayı eşleşti.");
            editText1.getText().clear();
        }else if (iOne != NumberToFindOne && iTwo != NumberToFindTwo && iThree != NumberToFindThree && iFour != NumberToFindFour) {
            msgTvOne.setText("Herhangi bir sayı eşleşmedi.");
            editText1.getText().clear();
        }

    }
}

Answer 1

这是您真正想要的(获得四位数)吗？

        String sOne = subs.substring(0, 1);
        String sTwo = subs.substring(1, 2);
        String sThree = subs.substring(2, 3);
        String sFour = subs.substring(3);