构造函数通知已弃用

Question

我对 Android 应用程序开发非常陌生。在这么多教程的帮助下，我创建了一个带有 webview、actionbar 和 GCM 的应用程序。一切正常。但我收到警告“不推荐使用构造函数通知”。我已经通过了notification.builder。但我无法使用新的通知构建器修改我的代码。谁能帮帮我.....

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"," "+ MainActivity.name);
    ServerUtilities.register(context, MainActivity.name, MainActivity.email, MainActivity.AndroidVersion, MainActivity.AndroidID, MainActivity.manufacturer, MainActivity.model, 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, MainActivity.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;

    //notification.sound = Uri.parse("android.resource://" + context.getPackageName() + "your_sound_file_name.mp3");

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

}

}

**Manifest sdkversion 8 到 18

Answer 1

您正在尝试使用自 API 11 起已弃用的 Notification 构造函数。这意味着它不再受支持且不应使用。改用 Notification.Builder https://developer.android.com/reference/android/app/Notification.Builder.html

 Notification noti = new Notification.Builder(mContext)
     .setContentTitle("New mail from " + sender.toString())
     .setContentText(subject)
     .setSmallIcon(R.drawable.new_mail)
     .setLargeIcon(aBitmap)
     .setContentIntent(yourPendingIntent)
     .build();

您目前有以下：

Notification notification = new Notification(icon, message, when);

此构造函数已弃用，取而代之的是 Notification.Builder，如下所示：

Notification notification = new Notification.Builder(context)
    .setContentText(message)
    .setSmallIcon(icon)
    .setWhen(when)
    .build();

Answer 2

我尝试了以下教程： http://javapapers.com/android/google-cloud-messaging-gcm-for-android-and-push-notifications/ 事实上，我似乎能够注册，并且通知的发送不会出现任何错误，如您所见： http://push.taxiprofessional.net/android/testNotification.php

但没有通知到达。有没有人使用过它并且可以帮助揭穿它？

Answer 3

至于原来的问题，如果你的系统支持 GCMBaseIntentService，这个类可以正常工作：

package ...;

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 static com.example.taxiprofessional.CommonUtilities.SENDER_ID;
import static com.example.taxiprofessional.CommonUtilities.displayMessage;

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");
     AccountInformation info=AccountInformation.sharedInstance();
     ServerUtilities.register(context, info.email, info.password, 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.taxi_profi;
     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, Dashboard.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);      

 }

}