通过textview（android studio）将整数传递给其他活动，以添加到主分数

Question

这是我在Android Studio的第一个项目。代码有点乱。我正在为我和家人玩的纸牌游戏创建一个记分应用程序。

我有一个问题添加分数到主要活动从投标活动.你会如何存储的文本视图继续添加到？

Score_活动java代码：

          public class score_activity extends AppCompatActivity {
          // creating an object of the text view
          TextView scoreA;
          TextView scoreB;
         TextView tvA;
          TextView tvB;

        @Override
       protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_score);
       // assigning the outputs of the user to the object
       scoreA = (TextView) findViewById(R.id.scoreA);
       scoreB = (TextView) findViewById(R.id.scoreB);
       tvA = (TextView) findViewById(R.id.nameA);
       tvB = (TextView) findViewById(R.id.nameB);

        Bundle bundle = getIntent().getExtras();
        String text1 = bundle.getString("Team A");
        String text2 = bundle.getString("Team B");
        String text3 = getIntent().getStringExtra("ScoreA");
         String text4 = getIntent().getStringExtra("ScoreB");
         // setting the fetched data to the corresponding text views

       tvA.setText(text1);
       tvB.setText(text2);
       scoreA.setText(text3);
        scoreB.setText(text4);
       // this method is the logic that increases the value in the text 
       view by one on every click for team A
       }

投标活动代码

       public void scoreTotal(View view) {

        String nameA = tvTeamA.getText().toString();
        String nameB = tvTeamB.getText().toString();
        int bida = Integer.parseInt(bidA.getText().toString());
        int tricksTotalA = 
      Integer.parseInt(tricksA.getText().toString());

        int totalB = 25 - tricksTotalA;
        int totalScoreBA = mentionteamA + tricksTotalA;
        int totalScoreBB = mentionteamB + totalB;



        if (bida > totalScoreBA) {
            scoreA2 = (bida * -1);

            String scoreBoardA = String.valueOf(scoreA2);
            String scoreBoardB = String.valueOf(totalScoreBB);

            Intent i = new Intent(bid_activity.this, 
        score_activity.class);
            i.putExtra("Team A", nameA);
            i.putExtra("Team B", nameB);
            i.putExtra("ScoreA", scoreBoardA);
            i.putExtra("ScoreB", scoreBoardB);
            // starting the activity
            startActivity(i);
        }

        if (bida <= totalScoreBA) {
            scoreA2 = totalScoreBA;
            String scoreBoardA = String.valueOf(scoreA2);
            String scoreBoardB = String.valueOf(totalScoreBB);
            Intent i = new Intent(bid_activity.this, 
     score_activity.class);
            i.putExtra("Team A", nameA);
            i.putExtra("Team B", nameB);
            i.putExtra("ScoreA", scoreBoardA);
            i.putExtra("ScoreB", scoreBoardB);
            // starting the activity
            startActivity(i);
        }
        if (tricksTotalA == 25) {
            scoreA2 = totalScoreBA;
            int displayB = 0;

            String scoreBoardA = String.valueOf(scoreA2);
            String scoreBoardB = String.valueOf(displayB);
            Intent i = new Intent(bid_activity.this, 
      score_activity.class);
            i.putExtra("Team A", nameA);
            i.putExtra("Team B", nameB);
            i.putExtra("ScoreA", scoreBoardA);
            i.putExtra("ScoreB", scoreBoardB);
            // starting the activity
            startActivity(i);

        }

Answer 1

我只是演示如何将您的投标活动中的数据传递给评分活动。

投标活动

Intent i = new Intent(bid_activity.this, score_activity.class);
i.putExtra("ScoreA2", scoreA2);
i.putExtra("ScoreB2", scoreB2);
startActivity(intent);

得分活动

int scoreA2 = getIntent().getIntExtra("ScoreA2");
int scoreB2 = getIntent().getIntExtra("scoreB2");

双击，你可以跟随这个线程。

Answer 2

一个想法是打电话

startActivityForResult(i)

而不是

startActivity(i)

然后，您可以在BidActive中传递结果，并在ScoreActiivty的onActivityResult调用中捕获它。