基于决策的故事应用中的连续性问题

Question

我试图做出基于决策的故事。即，您选择选项a或b，故事根据您的选择而变化。我遇到的问题是，如果我选择了选项a或b，那么当我进入故事的时候，它会让我回到故事的另一部分，它应该不会。

MainActivity.java：

public class MainActivity extends AppCompatActivity {

    private TextView story;
    private Button buttonA;
    private Button buttonB;
    private int sPoint = 1;

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

        story = (TextView) findViewById(R.id.nView);
        buttonA = (Button) findViewById(R.id.buttonTop);
        buttonB = (Button) findViewById(R.id.buttonBottom);

        buttonA.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
               if ( sPoint == 1 | sPoint == 2 ) {
                   story.setText(R.string.V1_Story);
                   buttonA.setText(R.string.V1_Ans1);
                   buttonB.setText(R.string.V1_Ans2);
                   sPoint = 3;
               }
               else if (sPoint == 3 | sPoint == 4 ) {
                   story.setText(R.string.V3_Story);
                   buttonA.setText(R.string.V3_Ans1);
                   buttonB.setText(R.string.V3_Ans2);
                   sPoint = 5;
               }
               else if (sPoint == 5 | sPoint == 6 ) {
                   story.setText(R.string.V6_Story);
                   buttonA.setText(R.string.V6_Ans1);
                   buttonB.setText(R.string.V6_Ans2);
                   sPoint = 7;
               }
               else if (sPoint == 7) {
                   story.setText(R.string.V6_Story);
                   buttonA.setText(R.string.V6_Ans1);
                   buttonB.setText(R.string.V6_Ans2);
                   sPoint = 9;
               }
            }
        });

        buttonB.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if ( sPoint == 2  | sPoint == 3 )  {
                    story.setText(R.string.V2_Story);
                    buttonA.setText(R.string.V2_Ans1);
                    buttonB.setText(R.string.V2_Ans2);
                    sPoint = 4;
                }
                else if (sPoint == 4 | sPoint == 5) {
                    story.setText(R.string.V4_Story);
                    buttonA.setText(R.string.V4_Ans1);
                    buttonB.setText(R.string.V4_Ans2);
                    sPoint = 6;
                }
                else if (sPoint == 6 | sPoint == 7 ) {
                    story.setText(R.string.V6_Story);
                    buttonA.setText(R.string.V6_Ans1);
                    buttonB.setText(R.string.V6_Ans2);
                    sPoint = 8;
                }
            }
        });
    }
}