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Android:startActivityForResult沒有調用onActivityResult

[英]Android: startActivityForResult not calling onActivityResult

我的設置

  • 在自己的進程中運行的服務,CentralService
  • 一個調用startActivityForResult(),MainActivity的活動
  • 正在為結果,ReturnResultActivity啟動的活動

我想做什么

  1. 啟動ReturnResultActivity並將其綁定到服務(注冊其處理程序)
  2. 讓任何其他想要運行的活動運行
  3. 當它收到來自服務的消息時:
    • 解除服務綁定
    • 完()
    • 的setResult()
      1. 調用MainActivity的onActivityResult()方法

使用Log.i我已經確認步驟1到3發生了。 但是,當應該調用onActivityResult()方法時,我在日志中得到以下內容:

V/ActivityManager(   60): Finishing activity: token=HistoryRecord{442cc518 com.myActivity/.primitives.ReturnResultActivity}, result=3, data=Intent { (has extras) }
V/ActivityManager(   60): Adding result to HistoryRecord{442a3988 com.mainActivity.sample/.MainActivity} who=null req=500 res=3 data=Intent { (has extras) }

附加信息

每個實體都在一個單獨的項目中(我有3個項目相互交互),因此它們都在自己的流程中運行。

MainActivity從服務啟動,代碼如下:

Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
intent.setClassName(activityInfo.packageName, activityInfo.name);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK 
          | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
startActivity(intent);

一些守則

返回結果活動:

public class ReturnResultActivity extends SomeActivity {
    private static final boolean DEBUG = true;
    private static final String TAG = "ReturnResultActivity";

    protected void onBind() {
        // We want to monitor the service for as long as we are
        // connected to it.
        Message msg = Message.obtain(null,
                CentralService.MSG_LISTEN);
        msg.replyTo = mMessenger;

        try {
            mService.send(msg);
        } catch (RemoteException e) {
            // In this case the service has crashed before we could even
            // do anything with it; we can count on soon being
            // disconnected (and then reconnected if it can be restarted)
            // so there is no need to do anything here.
            e.printStackTrace();
        }
    }

    /** this method is called eventually after doUnbindService is called **/
    protected void onUnbind() {
        if (DEBUG) Log.i(TAG, "Unbinding and finishing"); //I can tell this gets called when I run it
        if (data != null) {
            setResult(CentralService.MSG_SPEECH_RECOGNIZED, data);
        }
        finish();
    }

    Intent data;
    protected boolean receiveMessage(Message msg) {
        if (DEBUG) Log.i(TAG, "Incoming Message to Listener: " + msg.what);

        switch (msg.what) {
            case ASRManager.MSG_SPEECH_RECOGNIZED:
                data = new Intent();
                Bundle bundle = msg.getData();
                bundle.setClassLoader(getClassLoader());
                data.putExtra(ASRManager.TOKEN_PARCEL_KEY, bundle.getParcelable(ASRManager.TOKEN_PARCEL_KEY));
                if (DEBUG) Log.i(TAG, "Received speech, setting result.");
                doUnbindService();

                return true;
            default:
                return false;
        }
    }


}

主要活動

public class MainActivity extends CustomActivity {
    private static final boolean DEBUG = true;
    private static final String TAG = "MainActivity";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Intent intent = new Intent("com.custom.returnresultaction");
        startActivityForResult(listenIntent, 500);

    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (DEBUG) Log.i(TAG, "Got activity result " + resultCode); //this doesn't get called

    }
}

我的LogCat窗口中沒有顯示堆棧跟蹤。 請幫忙!

編輯:有趣的新信息。 如果我然后從啟動器啟動MainActivity,我在logcat中看到以下內容:

I/ActivityManager(   60): Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.mainActivity.sample/.MainActivity }
V/ActivityManager(   60): Sending result to HistoryRecord{44253568 com.android.launcher/com.android.launcher2.Launcher} (index -1)
I/ActivityManager(   60): Starting Activity Unchecked Locked
V/ActivityManager(   60): com.mainActivity.sample.MainActivity Audio Activity Found
V/ActivityManager(   60): Delivering results to HistoryRecord{442c0310 com.mainActivity.sample/.MainActivity}: [ResultInfo{who=null, request=500, result=3, data=Intent { (has extras) }}]
V/ActivityThread(  327): Handling send result to ActivityRecord{440de270 token=android.os.BinderProxy@440ddca0 {com.mainActivity.sample/com.mainAcitivty.sample.MainActivity}}
V/ActivityThread(  327): Delivering result to activity ActivityRecord{440de270 token=android.os.BinderProxy@440ddca0 {com.mainActivity.sample/com.mainActivity.sample.MainActivity}} : ResultInfo{who=null, request=500, result=3, data=Intent { (has extras) }}
I/MainActivity(  327): Got activity result 3

我的理論是,沒有運行包含MainActivity的任務,因為消息是從CentralService接收的。 有什么想法嗎? 知道如何切換到正確的任務。 (注意即使這可能看起來很糟糕,也可能會破壞用戶切換任務並將另一個Activity帶到最前端,這就是我想要做的。這是因為這最終將在自定義版本的android上運行,這將使所有這不是破壞性的。)

2年后回到這個問題后,問題是因為活動是在一項新任務中啟動的。 (我把它設置在我開火的意圖中)。 為立即啟動新任務的結果啟動活動將返回-1。

打電話后

startActivityForResult(listenIntent, 500);

在com.custom.returnresultaction類中,您是否包含此代碼?

setResult(RESULT_CANCELED, i);

or setResult(RESULT_OK, i);

and call finish();

您需要設置結果並調用finish()。

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