傳遞物件類型...use Serializable on android

Score.java...  實作  Serializable   interface


public class Score implements Serializable {

private int programming, dataStructure, algorithm;


//  建構子
public Score(int programming, int dataStructure, int algorithm) {
       this.programming = programming;
       this.dataStructure = dataStructure;
       this.algorithm = algorithm;
   }

@Override
   public String toString() {
       NumberFormat nf = NumberFormat.getInstance();
       String text = "programming = " + programming +
               "\ndataStructure = " + dataStructure +
               "\nalgorithm = " + algorithm +
               "\nsum = " + nf.format(getSum()) +
               "\naverage = " + nf.format(getAverage());
       return text;
   }
}

然後在  Mainactivity.java  ..當按下按鈕之後...把score 加到bundle 裡面...然後傳遞



public void onSubmitClick(View view) {
        boolean isValid =
                isValid(etProgramming) & isValid(etDataStructure) & isValid(etAlgorithm);
        if (!isValid) {
            return;
        }
        int programming = Integer.parseInt(etProgramming.getText().toString());
        int dataStructure = Integer.parseInt(etDataStructure.getText().toString());
        int algorithm = Integer.parseInt(etAlgorithm.getText().toString());

        Intent intent = new Intent(this, ResultActivity.class);
        Bundle bundle = new Bundle();
        Score score = new Score(programming, dataStructure, algorithm);
        bundle.putSerializable("score", score);
        intent.putExtras(bundle);
       
        Log.i(TAG, "change to Resultactivity");
        startActivity(intent);
    }

在 Resultactivity.java...利用 bundle.getSerializable("score") 來get


  private void showResults() {
    Log.i(TAG, "showResults");
       Bundle bundle = getIntent().getExtras();
       Object score = bundle.getSerializable("score");
       tvResult.setText(score.toString());
   }