Question

我尝试制作游戏，我需要计算得分。分数在load()方法中生成，应放在TextView score。出现的问题是，我的textView没有变化，它始终保持不变：0。

public class MainActivity extends Activity implements OnGestureListener {
    private Paint paint = new Paint();
    public int sco = 0;
    public int colora;

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

        load();

        TextView score = (TextView) findViewById(R.id.textView1);
        score.setText(String.valueOf(sco));
    }

    private void load() {

        Bitmap bg = Bitmap.createBitmap(480, 800, Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(bg);
        RelativeLayout ll = (RelativeLayout) findViewById(R.id.rect);
        ll.setBackgroundDrawable(new BitmapDrawable(bg));

        List < Integer > numbers = Arrays.asList(Color.RED, Color.BLUE, Color.GREEN, Color.YELLOW);
        Collections.shuffle(numbers);

        colora = numbers.get(0);
        if (colora == Color.RED) {
            sco++;
        }

        paint.setColor(numbers.get(0));
        canvas.drawRect(20, 15, 11, 3, paint);

        paint.setColor(numbers.get(1));
        canvas.drawRect(19, 15, 15, 3, paint);

        paint.setColor(numbers.get(2));
        canvas.drawRect(5, 5, 15, 35, paint);

        paint.setColor(numbers.get(3));
        canvas.drawRect(5, 15, 26, 1.4, paint);
    }
}

Answer 1

每次score.setText(String.valueOf(sco));更改时都致电sco。您只需在onCreate()中调用一次。

Answer 2

我会移动一份：

score.setText(String.valueOf(sco));

进入你的加载方法：

    colora = numbers.get(0);
    if (colora == Color.RED) {
        sco++;
        score.setText(String.valueOf(sco));
    }

所以一切都将是：

public class MainActivity extends Activity implements OnGestureListener {
    private Paint paint = new Paint();
    public int sco = 0;
    public int colora;
    TextView score;

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

        score = (TextView) findViewById(R.id.textView1);
        score.setText(String.valueOf(sco));

        load();
    }

    private void load() {

        Bitmap bg = Bitmap.createBitmap(480, 800, Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(bg);
        RelativeLayout ll = (RelativeLayout) findViewById(R.id.rect);
        ll.setBackgroundDrawable(new BitmapDrawable(bg));

        List < Integer > numbers = Arrays.asList(Color.RED, Color.BLUE, Color.GREEN, Color.YELLOW);
        Collections.shuffle(numbers);

        colora = numbers.get(0);
        if (colora == Color.RED) {
            sco++;
            score.setText(String.valueOf(sco));
        }

        paint.setColor(numbers.get(0));
        canvas.drawRect(20, 15, 11, 3, paint);

        paint.setColor(numbers.get(1));
        canvas.drawRect(19, 15, 15, 3, paint);

        paint.setColor(numbers.get(2));
        canvas.drawRect(5, 5, 15, 35, paint);

        paint.setColor(numbers.get(3));
        canvas.drawRect(5, 15, 26, 1.4, paint);
    }
}

android - 创建分数

2 个答案: