startActivityForresult到一个类，并让该类将数据返回到另一个类

Question

我有3个类：主动脉，高光谱性和games -creenactivity。我想通过Main Activity去参加游戏续航，然后在游戏结束后，将得分传递到高光谱性。一切都成功地传递给了GamesScreenactivity，但这并不能以高度反应性来进行。

我相信这是因为具有启动性的主要目的，因此GamesCreenactivity的Finerquiz((期望将其数据归还给Main Activity。我将如何将Games -creenactivity的数据传递给高度反应性？

MainActivity((

    MainActivity(){
    ...
        private void startQuiz() {
            String difficulty = spinnerDifficulty.getSelectedItem().toString();
            Intent intent = new Intent(getBaseContext(), GameScreenActivity.class);
            intent.putExtra(EXTRA_DIFFICULTY, difficulty);
            startActivityForResult(intent, REQUEST_CODE_QUIZ);
        }
    }

gamesCreenactivity((

    GameScreenActivity(){
    ...
        private void finishQuiz(){
            Intent resultIntent = new Intent(getBaseContext(), 
    HighScoreActivity.class);
            resultIntent.putExtra(EXTRA_SCORE, score);
            resultIntent.putExtra(EXTRA_DIFFICULTY, difficulty);
            setResult(RESULT_OK, resultIntent);
            startActivity(resultIntent);
        }
    }

HighScoreActivity((

    HighScoreActivity(){
    ...
        @Override
        protected void onActivityResult(int requestCode, int resultCode, 
    Intent data) {
            super.onActivityResult(requestCode, resultCode, data);
            if (requestCode == REQUEST_CODE_QUIZ){
                if (resultCode == RESULT_OK) {
                    int score = data.getIntExtra(GameScreenActivity.EXTRA_SCORE, 0);
                    String difficulty = data.getStringExtra(GameScreenActivity.EXTRA_DIFFICULTY);
                    if (score > highScore10) {
                        updateHighscore(score, difficulty);
                    }
                }
            }
        }
    }

---------------------------------------------------------------------------------------------------

尝试广播方法：

带广播方法的games -creenactivity((

    GameScreenActivity(){
    ...
        private void finishQuiz(){
            Log.d("sender", "Broadcasting message");
            Intent intent = new Intent("scoreEvent");
            intent.putExtra(EXTRA_DIFFICULTY, difficulty);
            intent.putExtra(EXTRA_SCORE, score);
            LocalBroadcastManager.getInstance(this).sendBroadcast(intent);
            sendBroadcast(intent);
            Intent goToHighScores = new Intent(getBaseContext(), HighScoreActivity.class);
            startActivity(goToHighScores);
        }
    }

使用广播方法的高光谱性((

    HighScoreActivity(){
    ...
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_high_score);
            LocalBroadcastManager.getInstance(this).registerReceiver(mMessageReceiver,
                    new IntentFilter("scoreEvent"));
        }

        @Override
        protected void onActivityResult(int requestCode, int resultCode, 
    Intent data) {
            super.onActivityResult(requestCode, resultCode, data);
            if (requestCode == REQUEST_CODE_QUIZ){
                if (resultCode == RESULT_OK) {
                    int score = data.getIntExtra(GameScreenActivity.EXTRA_SCORE, 0);
                    String difficulty = data.getStringExtra(GameScreenActivity.EXTRA_DIFFICULTY);
                    if (score > highScore10) {
                        updateHighscore(score, difficulty);
                    }
                }
            }
        }
        private BroadcastReceiver mMessageReceiver = new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                String message = intent.getStringExtra("message");
                Log.d("receiver", "Got message: " + message);
            }
        };
        @Override
        protected void onDestroy() {
            LocalBroadcastManager.getInstance(this).unregisterReceiver(mMessageReceiver);
            super.onDestroy();
        }
    }

Answer 1

考虑HighScoreActivity正在运行，您可以利用LocalBroadcastManager用IntentFilter在HighScoreActivity中注册本地广播员。另外，不要忘记在 onDestroy()

中删除

现在，而不是 setResult从 GameScreenActivity

做sendBroadcast()

希望这会有所帮助。快乐编码！