Senden von Daten von der Benachrichtigung an geschlossene Aktivität

Question

Ich habe mich entschieden, meine einfache Empfangen/Senden von SMS-App zu machen. Im Moment funktionieren fast alle Funktionen gut, außer einer Sache - Senden von Daten von der Benachrichtigung an die geschlossene App. Wenn der Benutzer beispielsweise eine SMS und eine Benachrichtigung erhält, drückt er darauf und die Hauptaktivität wird gestartet. In dieser Hauptaktivität sollte Text von SMS und Absender Nummer angezeigt werden. Aber wenn ich auf Benachrichtigung stoße startet die Hauptaktivität und zeigt nichts an.

Haupt activity.java

public class MainActivity extends AppCompatActivity { 
    public static final String TAG = "logs"; 
    Button sendSms; 
    EditText address, body; 
    IntentFilter intentFilter; 
    TextView receivedSmsTextView; 
    private BroadcastReceiver smsReceiver = new BroadcastReceiver() { 
     @Override 
     public void onReceive (Context context, Intent intent) { 
      receivedSmsTextView = (TextView) findViewById (R.id.receivedSmsTextView); 
      receivedSmsTextView.setText ("From : " + intent.getStringExtra ("address") + "\n" + 
        "Message : " + intent.getStringExtra ("body")); 

     } 
    }; 

    @Override 
    protected void onResume() { 
     registerReceiver (smsReceiver, intentFilter); 
     super.onResume(); 
    } 

    @Override 
    protected void onCreate (Bundle savedInstanceState) { 
     super.onCreate (savedInstanceState); 
     setContentView (R.layout.activity_main); 
     sendSms = (Button) findViewById (R.id.sendButton); 
     intentFilter = new IntentFilter ("SMS_RECEIVED_ACTION"); 
     sendSms.setOnClickListener (new View.OnClickListener() { 
      @Override 
      public void onClick (View v) { 
       if (!address.getText().toString().isEmpty()) { 
        onSendSmsButtonClick (address.getText().toString(), body.getText().toString()); 
        address.setText (""); 
       } else { 
        Toast.makeText (MainActivity.this, "Enter number", Toast.LENGTH_SHORT).show(); 
       } 

      } 
     }); 
    } 

    private void onSendSmsButtonClick (String address, String body) { 
     String SENT = "SMS_SENT"; 
     String DELIVERED = "SMS_DELIVERED"; 

     PendingIntent sentPendingIntent = PendingIntent.getBroadcast (this, 0, new Intent (SENT), PendingIntent.FLAG_UPDATE_CURRENT); 
     PendingIntent deliveredPendingIntent = PendingIntent.getBroadcast (this, 0, new Intent (DELIVERED), PendingIntent.FLAG_UPDATE_CURRENT); 

     BroadcastReceiver sentReceiver = new BroadcastReceiver() { 
      @Override 
      public void onReceive (Context context, Intent intent) { 

       switch (getResultCode()) { 
        case RESULT_OK: 
         Toast.makeText (MainActivity.this, "Message sent", Toast.LENGTH_SHORT).show(); 
         break; 
        case SmsManager.RESULT_ERROR_GENERIC_FAILURE: 
         Toast.makeText (MainActivity.this, "Unknown error", Toast.LENGTH_SHORT).show(); 
         break; 
        case SmsManager.RESULT_ERROR_NO_SERVICE: 
         Toast.makeText (MainActivity.this, "Network unavailable", Toast.LENGTH_SHORT).show(); 
         break; 
        case SmsManager.RESULT_ERROR_NULL_PDU: 
         Toast.makeText (MainActivity.this, "No pdu provider detected", Toast.LENGTH_SHORT).show(); 
         break; 
        case SmsManager.RESULT_ERROR_RADIO_OFF: 
         Toast.makeText (MainActivity.this, "Radio off", Toast.LENGTH_SHORT).show(); 
         break; 
       } 
      } 
     }; 

     registerReceiver (sentReceiver, new IntentFilter (SENT)); 

     BroadcastReceiver deliveredReceiver = new BroadcastReceiver() { 
      @Override 
      public void onReceive (Context context, Intent intent) { 
       switch (getResultCode()) { 
        case RESULT_OK: 
         Toast.makeText (MainActivity.this, "Message delivered", Toast.LENGTH_SHORT).show(); 
         break; 
        case RESULT_CANCELED: 
         Toast.makeText (MainActivity.this, "Message delivery failed", Toast.LENGTH_SHORT).show(); 
       } 
      } 
     }; 

     registerReceiver (deliveredReceiver, new IntentFilter (DELIVERED)); 

     SmsManager sms = SmsManager.getDefault(); 
     sms.sendTextMessage (address, null, body, sentPendingIntent, deliveredPendingIntent); 
    } 
} 

SmsReceiver.java

public class SmsReceiver extends BroadcastReceiver { 
    private static final int REQUEST_CODE = 800; 
    public static final String TAG = "logs"; 

    @Override 
    public void onReceive (Context context, Intent intent) { 
     Bundle bundle = intent.getExtras(); 
     SmsMessage[] messages; 

     String address = ""; 
     String body = ""; 
     if (bundle != null) { 
      Object[] pdus = (Object[]) bundle.get ("pdus"); 
      messages = new SmsMessage[pdus.length]; 
      for (int i = 0; i < messages.length; i++) { 
       messages[i] = SmsMessage.createFromPdu ((byte[]) pdus[i]); 
       address = messages[i].getOriginatingAddress(); 
       body = messages[i].getMessageBody().toString(); 
      } 

      Toast.makeText (context, address + "\n" + body, Toast.LENGTH_SHORT).show(); 

      Intent broadcastIntent = new Intent ("SMS_RECEIVED_ACTION") 
        .putExtra ("address", address) 
        .putExtra ("body", body); 
      context.sendBroadcast (broadcastIntent); 

      sendNotification (address, body, context); 
      abortBroadcast(); 
     } 
    } 

    private void sendNotification (String address, String body, Context context) { 
     NotificationCompat.Builder builder = new NotificationCompat.Builder (context); 
     Intent smsIntent = new Intent (context, MainActivity.class); 

     smsIntent.putExtra ("address", address).putExtra ("body", body) 
       .setAction ("SMS_RECEIVED_ACTION") 
       .setFlags (Intent.FLAG_ACTIVITY_NEW_TASK)//Not sure but problem can be in this flags, but I don't know which flags better to use 
       .setFlags (Intent.FLAG_ACTIVITY_CLEAR_TOP) 
     ; 

     PendingIntent smsNotificationPendingIntent = PendingIntent.getActivity (context, 
       REQUEST_CODE, 
       smsIntent, PendingIntent.FLAG_UPDATE_CURRENT); 

     builder.setContentTitle (address) 
       .setContentText (body) 
       .setSmallIcon (android.R.drawable.ic_dialog_email) 
       .setContentIntent (smsNotificationPendingIntent) 
       .setAutoCancel (true) 
     ; 

     Notification notification = builder.build(); 

     NotificationManager manager = (NotificationManager) context.getSystemService (context.NOTIFICATION_SERVICE); 
     manager.notify (0, notification); 
    } 

} 

Manifest.xml

<?xml version="1.0" encoding="utf-8"?> 
<manifest package="com.example.lexzcq.smsstudy" 
      xmlns:android="http://schemas.android.com/apk/res/android"> 

    <uses-permission android:name="android.permission.SEND_SMS"/> 
    <uses-permission android:name="android.permission.RECEIVE_SMS"/> 

    <application 
     android:allowBackup="true" 
     android:icon="@mipmap/ic_launcher" 
     android:label="@string/app_name" 
     android:supportsRtl="true" 
     android:theme="@style/AppTheme"> 
     <activity android:name=".MainActivity" android:launchMode="singleTask"> 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN"/> 
       <category android:name="android.intent.category.LAUNCHER"/> 
      </intent-filter> 
     </activity> 
     <receiver android:name=".SmsReceiver"> 
      <intent-filter android:priority="999"> 
       <action android:name="android.provider.Telephony.SMS_RECEIVED"/> 
      </intent-filter> 
     </receiver> 
    </application> 

</manifest> 

P. S. Das Problem tritt nur auf, wenn die App geschlossen wird (vom Stapel verschoben). In anderen Fällen funktioniert das Problem. durch den Aufruf getIntent Daten von Absicht zu bekommen() in onCreate() -Methode

Answer 1

SOLUTION

Um Daten von Benachrichtigung zu erhalten, es zu geschlossener Haupttätigkeit senden und zeigen Sie es auf dem Bildschirm benötigen. Code sollte in etwa so aussehen:

if (getIntent().getExtras()!=null){ //checking if intent send from notification contains any data, otherwise TextView will show "null" 
     receivedSmsTextView.setText (getIntent() 
     .getStringExtra ("address") + "\n" + 
     getIntent().getStringExtra ("body")); 
      }