多个随机数结果答案

【问题标题】：Multiple random number results多个随机数结果
【发布时间】：2020-02-05 14:40:54
【问题描述】：

目前在 Android Studio 中工作，遇到了一点麻烦。试图让我的 rollScore 按钮一遍又一遍地滚动。此时它“滚动”一次并停止。我尝试了 for 循环和 while 循环，但无法让它允许多个“滚动”。

public class GameScreen extends AppCompatActivity {

    private Button rollButton; // Roll button being declared as a variable
    private TextView rollScore; // Text view being declared as a variable
    private TextView totalSCore; //
    private int mCounter = 0;
    private int totalRuns = 0;

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

        Random randomGenerator = new Random();
        final int randomInt = randomGenerator.nextInt(7) + 1;

        rollButton = (Button) findViewById(R.id.rollButton);
        rollScore = (TextView) findViewById(R.id.rollScore);
        totalSCore = (TextView) findViewById(R.id.totalScore);



        rollButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                    rollScore.setText(Integer.toString(randomInt));
                    mCounter++;

            }
        });

    }
}

【问题讨论】：

标签： java android random

【解决方案1】：

您必须在每次点击按钮时生成一个新的随机数。

像这样：

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

    Random randomGenerator = new Random();
    int randomInt;

    rollButton = (Button) findViewById(R.id.rollButton);
    rollScore = (TextView) findViewById(R.id.rollScore);
    totalSCore = (TextView) findViewById(R.id.totalScore);



    rollButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

                randomInt = randomGenerator.nextInt(7) + 1;
                rollScore.setText(Integer.toString(randomInt));
                mCounter++;

        }
    });

}

【讨论】：

【解决方案2】：

您需要在每次滚动后生成一个新的随机数，例如

rollScore.setText(Integer.toString(randomGenerator.nextInt(7) + 1));

【讨论】：