Ich weiß, das vor langer Zeit gefragt wurde, und wahrscheinlich viele Nutzer wie ich waren auch hier gesucht, aber ich werde vollständigen Code der Meldung in diesem manner.Imagine Szenario geben, wo Sie eine Chat-Anwendung haben und Wenn Sie möchten, dass Benachrichtigungen von jedem Benutzer gruppiert werden.Beachten Sie am besten, dies zu tun, um mit einer eindeutigen Benutzer-ID zu benachrichtigen, also müssen Sie einen einzigen Code schreiben, um zu benachrichtigen, da Sie nicht erraten können, wie viele Benachrichtigungen vorhanden sind In diesem Moment, wenn Sie unter api Ebene 23 zielen, was fast viele Benutzer außer Sichtweite bringt.Was soll man tun, wenn Sie wollen, dass jeder Benutzer Benachrichtigungen erhält und Logik behält? Das Beste, was ich getan habe, war die Verwendung von gemeinsamen Einstellungen ein wenig Logik dort lassen Sie mich den Code mit Kommentaren veröffentlichen.
(Durch diese Targeting Sie apis zu senken, so dass die kitkat diese Logik zu handhaben wird)
Die Klasse, die die Benachrichtigung als Test imitiert.
/**
* Simple id just for test
*/
private int NOTIFICATION_ID = 1;
private static int value = 0;
Notification.InboxStyle inboxStyle = new Notification.InboxStyle();
private NotificationCompat.Builder mCopat;
private Bitmap bitmap;
private SharedPreferences sharedPreferences;
private SharedPreferences.Editor editor;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher);
mCopat = new NotificationCompat.Builder(getApplicationContext());
/**
* Here we create shared preferences.Probably you will create some helper class to access shared preferences from everywhere
*/
sharedPreferences = getSharedPreferences("shared", MODE_PRIVATE);
editor = sharedPreferences.edit();
/**
* I clear this for test purpose.
*/
editor.clear();
editor.commit();
}
public void hey(View view) {
/**
* Add notification,let`s say add 4 notifications with same id which will be grouped as single and after it add the rest which will be grouped as new notification.
*/
int clickedTime = value++;
if (clickedTime == 4) {
NOTIFICATION_ID++;
}
/**
* Here is the important part!We must check whether notification id inserted inside the shared preferences or no.If inserted IT MEANS THAT WE HAVE an notification
* to where we should add this one (add the new one to the existing group in clear way)
*/
if (sharedPreferences.getString(String.valueOf(NOTIFICATION_ID), null) != null) {
Log.d("fsafsafasfa", "hey: " + "not null adding current");
/**
* TAKE A NOTICE YOU MUST NOT CREATE A NEW INTANCE OF INBOXSTYLE,OTHERWISE IT WON`T WORK.JUST ADD VALUES TO EXISTING ONE
*/
NotificationManager nManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
Notification.Builder builder = new Notification.Builder(this);
builder.setContentTitle("Lanes");
builder.setContentText("Notification from Lanes " + value);
builder.setSmallIcon(R.mipmap.ic_launcher);
builder.setLargeIcon(bitmap);
builder.setAutoCancel(true);
/**
* By this line you actually add an value to the group,if the notification is collapsed the 'Notification from Lanes' text will be displayed and nothing more
* otherwise if it is expanded the actual values (let`s say we have 5 items added to notification group) will be displayed.
*/
inboxStyle.setBigContentTitle("Enter Content Text");
inboxStyle.addLine("hi events " + value);
/**
* This is important too.Send current notification id to the MyBroadcastReceiver which will delete the id from sharedPrefs as soon as the notification is dismissed
* BY USER ACTION! not manually from code.
*/
Intent intent = new Intent(this, MyBroadcastReceiver.class);
intent.putExtra("id", NOTIFICATION_ID);
PendingIntent pendingIntent = PendingIntent.getBroadcast(this.getApplicationContext(), 0, intent, PendingIntent.FLAG_ONE_SHOT);
/**
* Simply set delete intent.
*/
builder.setDeleteIntent(pendingIntent);
builder.setStyle(inboxStyle);
nManager.notify("App Name", NOTIFICATION_ID, builder.build());
/**
* Add id to shared prefs as KEY so we can delete it later
*/
editor.putString(String.valueOf(NOTIFICATION_ID), "notification");
editor.commit();
} else {
/***
* Here is same logic EXCEPT that you do create an INBOXSTYLE instance so the values are added to actually separate notification which will just be created now!
* The rest logic is as same as above!
*/
/**
* Ok it gone to else,meaning we do no have any active notifications to add to,so just simply create new separate notification
* TAKE A NOTICE to be able to insert new values without old ones you must call new instance of InboxStyle so the old one will not take the place in new separate
* notification.
*/
Log.d("fsafsafasfa", "hey: " + " null adding new");
inboxStyle = new Notification.InboxStyle();
NotificationManager nManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
Notification.Builder builder = new Notification.Builder(this);
builder.setContentTitle("Lanes");
builder.setContentText("Notification from Lanes " + value);
builder.setSmallIcon(R.mipmap.ic_launcher);
builder.setLargeIcon(bitmap);
builder.setAutoCancel(true);
inboxStyle.setBigContentTitle("Enter Content Text");
inboxStyle.addLine("hi events " + value);
Intent intent = new Intent(this, MyBroadcastReceiver.class);
intent.putExtra("id", NOTIFICATION_ID);
PendingIntent pendingIntent = PendingIntent.getBroadcast(this.getApplicationContext(), 0, intent, PendingIntent.FLAG_ONE_SHOT);
builder.setDeleteIntent(pendingIntent);
builder.setStyle(inboxStyle);
nManager.notify("App Name", NOTIFICATION_ID, builder.build());
editor.putString(String.valueOf(NOTIFICATION_ID), "notification");
editor.commit();
}
}
}
Der Rundfunkempfänger zum Löschen intent.Do vergessen Sie nicht, den Receiver mit Ihrem Manifest hinzuzufügen!
public class MyBroadcastReceiver extends BroadcastReceiver {
/**
* Receive swipe/dismiss or delete action from user.This will not be triggered if you manually cancel the notification.
* @param context
* @param intent
*/
@Override
public void onReceive(Context context, Intent intent) {
/**
* As soon as received,remove it from shared preferences,meaning the notification no longer available on the tray for user so you do not need to worry.
*/
SharedPreferences sharedPreferences = context.getSharedPreferences("shared", context.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.remove(String.valueOf(intent.getExtras().getInt("id")));
editor.commit();
}
}
Es sei möglich durch benutzerdefinierte UI http://stackoverflow.com/questions/16168553/create-custom-notification-android – bitsabhi