如何让任务调用 pendingIntent

Question

我一直在尝试将 pendingIntent 作为任务的一部分传递给 Activity 识别客户端，但是 pendingIntent 似乎没有被调用。

我正在使用 Google 的 Activity 识别客户端 (https://developers.google.com/android/reference/com/google/android/gms/location/ActivityRecognitionClient). I have already looked at the example code (found here: https://github.com/googlesamples/android-play-location/blob/master/ActivityRecognition/app/src/main/java/com/google/android/gms/location/sample/activityrecognition/MainActivity.java)，但似乎看不到我的问题。

我的代码如下所示（我提取了 class 的部分内容以使其更易于阅读）：


public class SignIn extends AppCompatActivity {

    private ActivityRecognitionClient mActivityRecognitionClient;

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.sign_in);

        mActivityRecognitionClient = new ActivityRecognitionClient(this);

        Task<Void> task = mActivityRecognitionClient.requestActivityUpdates(1000L, getActivityDetectionPendingIntent());

        task.addOnSuccessListener(result -> Log.i("test", "test"));
        task.addOnFailureListener(e -> Log.e("test", e.toString()));
    }

    private PendingIntent getActivityDetectionPendingIntent() {
        Intent intent = new Intent(this, DetectedActivitiesIntentService.class);

        return PendingIntent.getService(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
    }

package com.example.kangaroute;

import android.app.IntentService;
import android.content.Intent;
import android.util.Log;

import com.google.android.gms.location.ActivityRecognitionResult;
import com.google.android.gms.location.DetectedActivity;

import java.util.ArrayList;

class DetectedActivitiesIntentService extends IntentService {

    protected static final String TAG = "DetectedActivity";

    public DetectedActivitiesIntentService(){
        super(TAG);
    }

    @Override
    public void onCreate(){
        Log.i("test", "works");
        super.onCreate();
    }

    @Override
    protected void onHandleIntent(Intent intent) {
        ActivityRecognitionResult result = ActivityRecognitionResult.extractResult(intent);

        // Get the list of the probable activities associated with the current state of the
        // device. Each activity is associated with a confidence level, which is an int between
        // 0 and 100.
        ArrayList<DetectedActivity> detectedActivities = (ArrayList) result.getProbableActivities();

        for (DetectedActivity activity : detectedActivities){
            Log.i(TAG, activity.toString());
        }

    }
}

当我运行代码时，我希望看到 "works" 被打印到 Logcat，因为我从 DetectedActivitiesIntentService 中的 onCreate() 方法记录它=] class。然而，我什么也没看到。

但是，"test" 是从与任务关联的 OnSuccessListener 记录的。当我记录结果时，没有任何结果...

Answer 1

大声笑猜猜谁忘了放 "public class" 而只是放 "class"。解决了！

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