Firebase(FCM):打开活动并传递有关通知点击的数据.安卓

Question

应明确实施如何使用Firebase通知和数据.我读了很多答案,但似乎无法使其发挥作用.这是我的步骤:

1.)我在PHP中将通知和数据传递给android,它看起来很好:

$msg = array
    (
         "body" => $body,
         "title" => $title,
         "sound" => "mySound"
    );

    $data = array
    (

         "user_id" => $res_id,
         "date" => $date,
         "hal_id" => $hal_id,
         "M_view" => $M_view
    );

    $fields = array
    (
        'registration_ids' => $registrationIds,
        'notification' => $msg,
        'data' => $data
    );



    $headers = array
    (
        'Authorization: key='.API_ACCESS_KEY,
        'Content-Type: application/json'
    );

    $ch = curl_init();
    curl_setopt( $ch,CURLOPT_URL, 'https://android.googleapis.com/gcm/send' );
    curl_setopt( $ch,CURLOPT_POST, true );
    curl_setopt( $ch,CURLOPT_HTTPHEADER, $headers );
    curl_setopt( $ch,CURLOPT_RETURNTRANSFER, true );
    curl_setopt( $ch,CURLOPT_SSL_VERIFYPEER, false );
    curl_setopt( $ch,CURLOPT_POSTFIELDS, json_encode( $fields ) );
    $result = curl_exec($ch );
    curl_close( $ch );

2.)在Android中收到通知和数据时,它会显示通知.当我点击此通知时,它会打开应用程序.但我无法弄清楚应用程序打开时处理数据的方式.当app处于前景和后台时,存在几个不同之处.我现在的代码如下:

public class MyFirebaseMessagingService extends FirebaseMessagingService {

private static final String TAG = "MyFirebaseMsgService";

@Override
public void onMessageReceived(RemoteMessage remoteMessage) {

    String user_id = "0";
    String date = "0";
    String cal_id = "0";
    String M_view = "0";

    if (remoteMessage.getData().size() > 0) {
        Log.d(TAG, "Message data payload: " + remoteMessage.getData());
        user_id = remoteMessage.getData().get("user_id");
        date = remoteMessage.getData().get("date");
        hal_id = remoteMessage.getData().get("hal_id");
        M_view = remoteMessage.getData().get("M_view");
    }

    //Calling method to generate notification
    sendNotification(remoteMessage.getNotification().getBody(), user_id, date, hal_id, M_view);
}

private void sendNotification(String messageBody, String user_id, String date, String hal_id, String M_view) {
    Intent intent = new Intent(this, MainActivity.class);
    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TOP);

    intent.putExtra("fcm_notification", "Y");
    intent.putExtra("user_id", user_id);
    intent.putExtra("date", date);
    intent.putExtra("hal_id", hal_id);
    intent.putExtra("M_view", M_view);
    int uniqueInt = (int) (System.currentTimeMillis() & 0xff);
    PendingIntent pendingIntent = PendingIntent.getActivity(getApplicationContext(), uniqueInt, intent,
            PendingIntent.FLAG_UPDATE_CURRENT);

    Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this);
    notificationBuilder.setSmallIcon(R.drawable.ic_launcher)
            .setContentText(messageBody)
            .setAutoCancel(true)
            .setSound(defaultSoundUri)
            .setContentIntent(pendingIntent);

    NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    notificationManager.notify(0, notificationBuilder.build());
}}

3.)当我使用上面的代码时,当我点击通知时,如果在后台,它会打开应用程序.如果应用程序在前台然后通知点击它只是解除通知.但是,我希望在两种方案(后台和前台)中接收数据并打开特定的活动.我在MainActivity中有以下代码,但我无法获取数据.fcm_notification,date,hal_id返回null.

public class MainActivity extends Activity {
 UserFunctions userFunctions;

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

@Override
protected void onNewIntent(Intent intent) {
    super.onNewIntent(intent);
    setIntent(intent);
    Intent intent_o = getIntent();
}

@Override
protected void onResume() {
    super.onResume();
    userFunctions = new UserFunctions();
    if(userFunctions.isUserLoggedIn(getApplicationContext())){
        Intent intent_o = getIntent();
        String fcm_notification = intent_o.getStringExtra("fcm_notification") ;
        String user_id = intent_o.getStringExtra("user_id");
        String date = intent_o.getStringExtra("date");
        String hal_id = intent_o.getStringExtra("hal_id");
        String M_view = intent_o.getStringExtra("M_view");
        Intent intent = new Intent(this, JobList.class);

        // THIS RETURNS NULL, user_id = null
        System.out.print("FCM" + user_id);
        startActivity(intent);
        finish();
    }else{
        // user is not logged in show login screen
        Intent login = new Intent(this, LoginActivity.class);
        startActivity(login);
        // Closing dashboard screen
        finish();
    }
}}

如果有人可以指导或建议我如何从Firebase中的MainActivity.java中检索任何场景(前景或背景)中的数据,这将是非常棒的.

Answer 1

首先,我将介绍处理消息文档中提到的详细信息.

在Both行下的摘要中,它显示当应用程序在前台时,有效负载将在您的onMessageReceived().

要从中打开活动onMessageReceived(),您应该检查所需的数据是否在有效负载中,如果有,请调用您的特定活动,然后通过意图传递您需要的所有其他详细信息.

现在,如果应用程序处于后台,则在文档中会提到Android系统托盘接收到通知,并且data可以从意图的附加内容中检索有效负载.

只需添加从我的答案的细节在这里它非常简单,只是给出了文档声明和样本的链接:

在后台应用程序中处理通知消息

当您的应用在后台时,Android会将通知消息定向到系统托盘.用户点按通知会默认打开应用启动器.

这包括包含通知和数据有效负载的消息(以及从Notifications控制台发送的所有消息).在这些情况下,通知将传递到设备的系统托盘,并且数据有效负载将在启动器活动的附加内容中传递.

我认为@ArthurThompson的这个答案解释得非常好:

当您发送带有数据有效负载(通知和数据)的通知消息并且应用程序位于后台时,您可以从用户点击通知而启动的意图的附加内容中检索数据.

从点击通知时启动MainActivity 的FCM示例:

if (getIntent().getExtras() != null) {
    for (String key : getIntent().getExtras().keySet()) {
        String value = getIntent().getExtras().getString(key);
        Log.d(TAG, "Key: " + key + " Value: " + value);
    }
}

Answer 2

在尝试了所有答案后,博客提出了解决方案.如果有人需要请使用此视频作为参考

https://www.youtube.com/watch?v=hi8IPLNq59o

另外要在MyFirebaseMessagingService中添加意图的视频:

public class MyFirebaseMessagingService extends FirebaseMessagingService {

private static final String TAG = "MyFirebaseMsgService";

@Override
public void onMessageReceived(RemoteMessage remoteMessage) {

    String user_id = "0";
    String date = "0";
    String hal_id = "0";
    String M_view = "0";

    if (remoteMessage.getData().size() > 0) {
        Log.d(TAG, "Message data payload: " + remoteMessage.getData());
        user_id = remoteMessage.getData().get("user_id");
        date = remoteMessage.getData().get("date");
        cal_id = remoteMessage.getData().get("hal_id");
        M_view = remoteMessage.getData().get("M_view");
    }

    String click_action = remoteMessage.getNotification().getClickAction();

    //Calling method to generate notification
    sendNotification(remoteMessage.getNotification().getBody(), remoteMessage.getNotification().getTitle(), user_id, date, hal_id, M_view, click_action);
}

private void sendNotification(String messageBody, String messageTitle, String user_id, String date, String hal_id, String M_view, String click_action) {
    Intent intent = new Intent(click_action);
    intent.putExtra("user_id", user_id);
    intent.putExtra("date", date);
    intent.putExtra("hal_id", hal_id);
    intent.putExtra("M_view", M_view);

    PendingIntent pendingIntent = PendingIntent.getActivity(getApplicationContext(), 0, intent,
            PendingIntent.FLAG_ONE_SHOT);

    Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this);
    notificationBuilder.setSmallIcon(R.drawable.ic_launcher)
            .setContentTitle(messageTitle)
            .setContentText(messageBody)
            .setAutoCancel(true)
            .setSound(defaultSoundUri)
            .setContentIntent(pendingIntent);

    NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    notificationManager.notify(0, notificationBuilder.build());
}}

并在onCreate或onResume中的新NotificationReceive活动中添加此项

    notification_Y_N = (TextView) findViewById(R.id.notification_Y_N);
    user_id_text = (TextView) findViewById(R.id.user_id_text);

    Intent intent_o = getIntent();
    String user_id = intent_o.getStringExtra("user_id");
    String date = intent_o.getStringExtra("date");
    String hal_id = intent_o.getStringExtra("hal_id");
    String M_view = intent_o.getStringExtra("M_view");

    notification_Y_N.setText(date);
    user_id_text.setText(hal_id);