Java 我的活动不调用ActivityResult

我正在尝试用startActivityForResult编写2个活动。但我的活动不调用ActivityResult

编辑：我打开一个对话框。当我单击“取消”时，该框不得再次显示。当我稍后单击“提醒我”时，如果我去第二个活动并回家，该框必须出现

我不明白。我已经检查了堆栈溢出，但没有正确的答案

你能帮我吗

Thx

第一项活动：

...
public void onCreate(Bundle saveInstance) {
...
Intent i = new Intent(HomeActivity.this, EstablishmentActivity.class);

                int idEstablishment = listEstablishment.get((int)id).getIdEstablishment();
                Log.d(TAG, "id = "+idEstablishment);
                i.putExtra("idEstablishment", idEstablishment);
                i.putExtra("GPS", wantGPS);
                Log.d(TAG, "wantGPS : " + wantGPS);
                //Start Intent
                startActivityForResult(i, WANTGPS);
...
}

...

 @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent intent) {

        Log.d(TAG, "go on actovoty rsult");


        if (requestCode == WANTGPS) {
            if (resultCode == Activity.RESULT_OK) {
                wantGPS = intent.getExtras().getBoolean("GPS");
                Log.d(TAG, "result : "+wantGPS);
            }
        }
}

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

        // Set up the action bar.
        final ActionBar actionBar = getActionBar();
        if (actionBar == null) {
            Log.d(TAG, "actionBar is null !");
        }

        //Set up the left icon to go back to Home Page
        actionBar.setDisplayHomeAsUpEnabled(true);

        Intent i = getIntent();
        wantGPS = i.getBooleanExtra("GPS", false);
        Log.d(TAG, "wantGPS 2 "+wantGPS);


    }

...

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
     if (id == android.R.id.home) {
            Intent result = new Intent(EstablishmentActivity.this, HomeActivity.class);
            result.putExtra("GPS", wantGPS);
            setResult(RESULT_OK, result);
            finish();
        }
        return super.onOptionsItemSelected(item);
    }

第二项活动：

...
public void onCreate(Bundle saveInstance) {
...
Intent i = new Intent(HomeActivity.this, EstablishmentActivity.class);

                int idEstablishment = listEstablishment.get((int)id).getIdEstablishment();
                Log.d(TAG, "id = "+idEstablishment);
                i.putExtra("idEstablishment", idEstablishment);
                i.putExtra("GPS", wantGPS);
                Log.d(TAG, "wantGPS : " + wantGPS);
                //Start Intent
                startActivityForResult(i, WANTGPS);
...
}

...

 @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent intent) {

        Log.d(TAG, "go on actovoty rsult");


        if (requestCode == WANTGPS) {
            if (resultCode == Activity.RESULT_OK) {
                wantGPS = intent.getExtras().getBoolean("GPS");
                Log.d(TAG, "result : "+wantGPS);
            }
        }
}

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

        // Set up the action bar.
        final ActionBar actionBar = getActionBar();
        if (actionBar == null) {
            Log.d(TAG, "actionBar is null !");
        }

        //Set up the left icon to go back to Home Page
        actionBar.setDisplayHomeAsUpEnabled(true);

        Intent i = getIntent();
        wantGPS = i.getBooleanExtra("GPS", false);
        Log.d(TAG, "wantGPS 2 "+wantGPS);


    }

...

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
     if (id == android.R.id.home) {
            Intent result = new Intent(EstablishmentActivity.this, HomeActivity.class);
            result.putExtra("GPS", wantGPS);
            setResult(RESULT_OK, result);
            finish();
        }
        return super.onOptionsItemSelected(item);
    }

---

根据这篇文章的回答：

请尝试以下代码：

    Intent result = new Intent();
    result.putExtra("GPS", wantGPS);
    setResult(RESULT_OK, result);
    finish();

---

使用更简单的

Intent（）

构造函数似乎可以解决很多问题。

最好确保用于reqCode（WANTGPS）的值为正值

我以前遇到过（随机生成的）负reqCodes的问题，onActivityResult大约有一半的时间没有被解雇（当reqCode变为负时）；OTOH小整数（1,2100，…）似乎工作正常。ReqCode可能也有一个上限。

---

不幸的是，我在文档中找不到对这种行为的任何提及；Android文档似乎没有解释reqCode应该是什么。

我有答案！！如果你有和我一样的问题，这个答案应该对你有帮助：）

我已经在清单上定义了父活动。所以android并没有考虑“OnOptionItemSelected”

---

我删除了清单上的父活动，它工作了

您是否收到错误或日志？这可能是有帮助的WANTGPS设置为42，所以它是肯定的：p我在我的帖子之前选中了taht，但是thx:）它对我不起作用：（我已经编辑了我的帖子。可能是错误不在这里，但在我的对话框中，你也缺少super.onActivityResult（）…请称之为Took I added=）thx。但是为什么调用super很重要呢？它对我的代码在系统意图（摄像头请求、拨号器等）上产生了影响…因此为了更安全起见。始终为活动方法添加所有super，除非您有特定的理由不这样做：）