Question

我已经阅读了有关WakeLock的各种解决方案，例如在AndroidManifest.xml中添加Permission以及确保将GCMIntentService的Constructor设置为public。

但是，我的代码仍然停留在“获取Wakelock”

完全相同的代码与单独的Android应用程序分开工作。

我只是在将其集成到主应用程序后才遇到此错误。

以下是我的GCM Intent Service代码：

package com.mp2012.ieatishootipostanalyzer.notifications;

import static com.mp2012.ieatishootipostanalyzer.notifications.CommonUtilities.SENDER_ID;
import static com.mp2012.ieatishootipostanalyzer.notifications.CommonUtilities.displayMessage;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.util.Log;

import com.google.android.gcm.GCMBaseIntentService;
import com.mp2012.ieatishootipostanalyzer.R;
import com.mp2012.ieatishootipostanalyzer.notifications.MainActivity2;

public class GCMIntentService extends GCMBaseIntentService {

private static final String TAG = "GCMIntentService";

public GCMIntentService() {
    super(SENDER_ID);
}

/**
 * Method called on device registered
 **/
@Override
protected void onRegistered(Context context, String registrationId) {
    Log.i(TAG, "Device registered: regId = " + registrationId);
    displayMessage(context, "Your device registred with GCM");
    Log.d("NAME", MainActivity2.name);
    ServerUtilities.register(context, MainActivity2.name, MainActivity2.email, registrationId);
}

/**
 * Method called on device un registred
 * */
@Override
protected void onUnregistered(Context context, String registrationId) {
    Log.i(TAG, "Device unregistered");
    displayMessage(context, getString(R.string.gcm_unregistered));
    ServerUtilities.unregister(context, registrationId);
}

/**
 * Method called on Receiving a new message
 * */
@Override
protected void onMessage(Context context, Intent intent) {
    Log.i(TAG, "Received message");
    String message = intent.getExtras().getString("price");

    displayMessage(context, message);
    // notifies user
    generateNotification(context, message);
}

/**
 * Method called on receiving a deleted message
 * */
@Override
protected void onDeletedMessages(Context context, int total) {
    Log.i(TAG, "Received deleted messages notification");
    String message = getString(R.string.gcm_deleted, total);
    displayMessage(context, message);
    // notifies user
    generateNotification(context, message);
}

/**
 * Method called on Error
 * */
@Override
public void onError(Context context, String errorId) {
    Log.i(TAG, "Received error: " + errorId);
    displayMessage(context, getString(R.string.gcm_error, errorId));
}

@Override
protected boolean onRecoverableError(Context context, String errorId) {
    // log message
    Log.i(TAG, "Received recoverable error: " + errorId);
    displayMessage(context, getString(R.string.gcm_recoverable_error,
            errorId));
    return super.onRecoverableError(context, errorId);
}

/**
 * Issues a notification to inform the user that server has sent a message.
 */
private static void generateNotification(Context context, String message) {
    int icon = R.drawable.ic_launcher;
    long when = System.currentTimeMillis();
    NotificationManager notificationManager = (NotificationManager)
            context.getSystemService(Context.NOTIFICATION_SERVICE);
    Notification notification = new Notification(icon, message, when);

    String title = context.getString(R.string.app_name);

    Intent notificationIntent = new Intent(context, MainActivity2.class);
    // set intent so it does not start a new activity
    notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP |
            Intent.FLAG_ACTIVITY_SINGLE_TOP);
    PendingIntent intent =
            PendingIntent.getActivity(context, 0, notificationIntent, 0);
    notification.setLatestEventInfo(context, title, message, intent);
    notification.flags |= Notification.FLAG_AUTO_CANCEL;

    // Play default notification sound
    notification.defaults |= Notification.DEFAULT_SOUND;

    // Vibrate if vibrate is enabled
    notification.defaults |= Notification.DEFAULT_VIBRATE;
    notificationManager.notify(0, notification);      

}

}

MainActivity

package com.mp2012.ieatishootipostanalyzer.notifications;

import static com.mp2012.ieatishootipostanalyzer.notifications.CommonUtilities.DISPLAY_MESSAGE_ACTION;
import static com.mp2012.ieatishootipostanalyzer.notifications.CommonUtilities.EXTRA_MESSAGE;
import static com.mp2012.ieatishootipostanalyzer.notifications.CommonUtilities.SENDER_ID;
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;
import android.widget.Toast;

import com.google.android.gcm.GCMRegistrar;
import com.mp2012.ieatishootipostanalyzer.R;

public class MainActivity2 extends Activity {
// label to display gcm messages
TextView lblMessage;

// Asyntask
AsyncTask<Void, Void, Void> mRegisterTask;

// Alert dialog manager
AlertDialogManager alert = new AlertDialogManager();

// Connection detector
ConnectionDetector cd;

public static String name;
public static String email;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main2);

    cd = new ConnectionDetector(getApplicationContext());

    // Check if Internet present
    if (!cd.isConnectingToInternet()) {
        // Internet Connection is not present
        alert.showAlertDialog(MainActivity2.this,
                "Internet Connection Error",
                "Please connect to working Internet connection", false);
        // stop executing code by return
        return;
    }

    // Getting name, email from intent
    Intent i = getIntent();

    name = i.getStringExtra("name");
    email = i.getStringExtra("email");      

    // Make sure the device has the proper dependencies.
    GCMRegistrar.checkDevice(this);

    // Make sure the manifest was properly set - comment out this line
    // while developing the app, then uncomment it when it's ready.
    GCMRegistrar.checkManifest(this);

    lblMessage = (TextView) findViewById(R.id.lblMessage);

    registerReceiver(mHandleMessageReceiver, new IntentFilter(
            DISPLAY_MESSAGE_ACTION));

    // Get GCM registration id
    final String regId = GCMRegistrar.getRegistrationId(this);

    // Check if regid already presents
    if (regId.equals("")) {
        // Registration is not present, register now with GCM
        GCMRegistrar.register(this, SENDER_ID);
    } else {
        // Device is already registered on GCM
        if (GCMRegistrar.isRegisteredOnServer(this)) {
            // Skips registration.
            Toast.makeText(getApplicationContext(), "Already registered with GCM", Toast.LENGTH_LONG).show();
        } else {
            // Try to register again, but not in the UI thread.
            // It's also necessary to cancel the thread onDestroy(),
            // hence the use of AsyncTask instead of a raw thread.
            final Context context = this;
            mRegisterTask = new AsyncTask<Void, Void, Void>() {

                @Override
                protected Void doInBackground(Void... params) {
                    // Register on our server
                    // On server creates a new user
                    ServerUtilities.register(context, name, email, regId);
                    return null;
                }

                @Override
                protected void onPostExecute(Void result) {
                    mRegisterTask = null;
                }

            };
            mRegisterTask.execute(null, null, null);
        }
    }
}       

/**
 * Receiving push messages
 * */
private final BroadcastReceiver mHandleMessageReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        String newMessage = intent.getExtras().getString(EXTRA_MESSAGE);
        // Waking up mobile if it is sleeping
        WakeLocker.acquire(getApplicationContext());

        /**
         * Take appropriate action on this message
         * depending upon your app requirement
         * For now i am just displaying it on the screen
         * */

        // Showing received message
        lblMessage.append(newMessage + "\n");
        Toast.makeText(getApplicationContext(), "New Message: " + newMessage, Toast.LENGTH_LONG).show();

        // Releasing wake lock
        WakeLocker.release();
    }
};

@Override
protected void onDestroy() {
    if (mRegisterTask != null) {
        mRegisterTask.cancel(true);
    }
    try {
        unregisterReceiver(mHandleMessageReceiver);
        GCMRegistrar.onDestroy(this);
    } catch (Exception e) {
        Log.e("UnRegister Receiver Error", "> " + e.getMessage());
    }
    super.onDestroy();
}

}

以下是AndroidManifest xml文件的代码

<uses-sdk
    android:minSdkVersion="10"
    android:targetSdkVersion="14" />
<!-- GCM connects to Internet Services. -->
<uses-permission android:name="android.permission.INTERNET" />

<!-- GCM requires a Google account. -->
<uses-permission android:name="android.permission.GET_ACCOUNTS" />

<!-- Keeps the processor from sleeping when a message is received. -->
<uses-permission android:name="android.permission.WAKE_LOCK" />

<!-- Creates a custom permission so only this app can receive its messages. -->
<permission
    android:name="com.mp2012.ieatishootipostanalyzer.permission.C2D_MESSAGE"
    android:protectionLevel="signature" />

<uses-permission android:name="com.mp2012.ieatishootipostanalyzer.permission.C2D_MESSAGE" />

<!-- This app has permission to register and receive data message. -->
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />

<!-- Network State Permissions to detect Internet status -->
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

<!-- Permission to vibrate -->
<uses-permission android:name="android.permission.VIBRATE" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >        
    <activity
        android:name=".login.DashboardActivity"
        android:label="IEatIShootIPost" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

    <activity
        android:name=".login.RegisterActivity"
        android:label="IEatIShootIPost" 
    />
    <activity
        android:name=".login.LogoutActivity"
        android:label="IEatIShootIPost" 
    />
    <activity
        android:name=".login.SuccessRegister"
        android:label="IEatIShootIPost" 
    />
    <activity
        android:name=".login.LoginActivity"
        android:label="IEatIShootIPost" 
    />
    <activity
        android:name=".login.CalorieProgressActivity"
        android:label="IEatIShootIPost" 
    />        
    <activity
        android:name=".login.CalculateDRCIActivity"
        android:label="IEatIShootIPost" 
    />     
    <activity
        android:name=".login.WIETActivity"
        android:label="IEatIShootIPost" 
    />     
    <activity
        android:name=".login.NewFoodActivity"
        android:label="IEatIShootIPost" 
    />     
    <activity
        android:name=".login.PieChartActivity"
        android:label="IEatIShootIPost" 
    />     
    <activity
        android:name="org.achartengine.GraphicalActivity"
        android:label="IEatIShootIPost" 
    />     
    <activity
        android:name=".facebook.MainActivity"
        android:label="IEatIShootIPost" 
    />    
    <activity
        android:name=".notifications.MainActivity2"
        android:configChanges="orientation|keyboardHidden"
        android:label="IEatIShootIPost" 
    />    
    <activity
        android:name=".notifications.RegisterActivity"
        android:label="IEatIShootIPost" 
    />     
    <activity
        android:name=".login.DashboardBurnCalorieActivity"
        android:label="IEatIShootIPost" 
    />  
    <activity
        android:name=".login.ProgressBurnCalorieActivity"
        android:label="IEatIShootIPost" 
    />     

     <receiver
        android:name="com.google.android.gcm.GCMBroadcastReceiver"
        android:permission="com.google.android.c2dm.permission.SEND" >
        <intent-filter>

            <!-- Receives the actual messages. -->
            <action android:name="com.google.android.c2dm.intent.RECEIVE" />
            <!-- Receives the registration id. -->
            <action android:name="com.google.android.c2dm.intent.REGISTRATION" />

            <category android:name="com.mp2012.ieatishootipostanalyzer" />
        </intent-filter>
    </receiver>

    <service android:name=".notifications.GCMIntentService" />
</application>

最后但并非最不重要的是，来自logcat的错误

Registering app com.mp2012.ieatishootipostanalyzer of senders 74463753470
onReceive: com.google.android.com.c2dm.intent.REGISTRATION
GCM IntentService class: com.mp2012.ieatishootipostanalyzer.GCMIntentService
Acquiring wakelock

它挂起......

谢谢！

Answer 1

将所有GCM相关的类保留在主程序包中，i.s在您调用gcm注册的地方。在您的项目包名称com.mp2012.ieatishootipostanalyzer中这样。

Answer 2

可能是主包下有更多包，而GCM代码需要放在另一个包下。例如com.mp2012.ieatishootipostanalyzer.notification。这也可以完成，但您需要编辑Google云消息系统提供的GCM代码。这是GCMBroadcastReceiver：

protected String getGCMIntentServiceClassName(Context context) 
{
    String className = context.getPackageName() +".notification"+DEFAULT_INTENT_SERVICE_CLASS_NAME;

    return className;
}

系统可以正常工作。

Android编程：GCMIntentService被困在WakeLock

2 个答案: