如何在 android 中读取 One Signal Push Notification Message？

Question

我需要阅读 One Signal 的推送通知信息。取决于我需要在我的电子商务应用中更改产品的交付状态。

怎么读？

Answer 1

这里是关于如何在收到通知时运行自定义代码的 OneSignal 指南：

1. 开启内容可用 (iOS) 或静默通知 (Android) 字段。这将导致您的应用程序被自动唤醒 每当收到通知时都会在后台启动（即使 它没有被点击）。您的自定义代码必须使用本机代码编写， Android 上的 Java 和 iOS 上的 Swift 或 Objective-C。见苹果的 内容适用于 iOS 和我们的 Android 背景数据指南 有关接收和处理事件的详细信息。
2. 在您的应用程序中，我们 提供一个 API，您可以在上述情况下使用该 API 来运行自定义代码 发生。然后，您的自定义代码可以保存通知的副本 设备上的内容，以便在活动源中显示 下次启动应用程序时。或者它可以将它的副本保存在您的 服务器。

通知可以包含将传递给您的自定义代码的元数据（在 OneSignal API 中作为“数据”提供）。

Answer 2

您需要扩展 NotificationsReceiveHandler 并将其设置到您的 OneSignal 实例中。

在此示例中，我在收到通知时捕获通知，并检查 NotificationsType。

NotificationsType 是我在服务器后端创建的一个对象，以便更好地了解客户端的通知角色。

public class CustomNotificationReceivedHandler implements OneSignal.NotificationReceivedHandler {

@Override
public void notificationReceived(OSNotification notification) {

    try {
        NotificationsType type = NotificationsType.fromValue(notification.payload.additionalData.optInt("type"));
        if (type.getValue() == NotificationsType.NEW_MESSAGE.getValue()) {
            notification.displayType = OSNotification.DisplayType.None;

            final Message message = new Gson().fromJson(notification.payload.additionalData.getString("payload"), Message.class);

            EventBus.getDefault().post(new NewMessageReceived(message));
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}
}

Answer 3

添加

compile 'com.onesignal:OneSignal:[3.7.1, 3.99.99]'

在android下添加这段代码

manifestPlaceholders = [onesignal_app_id: "app_id Enter here",
                         onesignal_google_project_number: "REMOTE"]

Answer 4

class ExampleNotificationReceivedHandler implements OneSignal.NotificationReceivedHandler {
    @Override
    public void notificationReceived(OSNotification notification) {

       try {
        String type = data.optString("type","");
        if (type.equals("your_silent_type")) { // your condition
            notification.displayType = OSNotification.DisplayType.None;
            notification.isAppInFocus = false;

            // if notification already shown then just remove it, from notification tray
            String ns = Context.NOTIFICATION_SERVICE;
            NotificationManager nMgr = (NotificationManager) getSystemService(ns);
            nMgr.cancel(notification.androidNotificationId);

        }
       } catch(Exception e){} 
    }
}

Answer 5

这很简单

首先您可以从 OneSignal.db 读取所有通知，它是您应用中的本地数据库

现在您如何从 OneSignal.db 中读取数据 只需在下面使用这个类

public class DataBaseHelper extends SQLiteOpenHelper {

    private Context mycontext;
    private static String DB_NAME = "OneSignal.db";
    private static String DB_PATH = "/data/data/" + BuildConfig.APPLICATION_ID + "/databases/";
    public SQLiteDatabase myDataBase;

    public DataBaseHelper(Context context) throws IOException {
        super(context, DB_NAME, null, 8);
        this.mycontext = context;
        boolean dbexist = checkdatabase();
        if (dbexist) {
            System.out.println("Database exists");
            opendatabase();
        } else {
            System.out.println("Database doesn't exist");
            createdatabase();
        }
    }

    public  void addmessgetodatabse(String message)
    {
        SQLiteDatabase db = this.getWritableDatabase();
        ContentValues values = new ContentValues();
        values.put("feild2", message);

        db.insert("data", null, values);
    }
    public void createdatabase() throws IOException {
        boolean dbexist = checkdatabase();
        if (dbexist) {
            System.out.println(" Database exists.");
        } else {
            this.getReadableDatabase();
            this.close();
            try {
                copydatabase();
            } catch (IOException e) {
                throw new Error("Error copying database");
            }
        }
    }

    private boolean checkdatabase() {

        boolean checkdb = false;
        try {
            String myPath = DB_PATH + DB_NAME;
            File dbfile = new File(myPath);
            checkdb = dbfile.exists();
        } catch (SQLiteException e) {
            System.out.println("Database doesn't exist");
        }
        return checkdb;
    }

    private void copydatabase() throws IOException {
        //Open your local db as the input stream
        InputStream myinput = mycontext.getAssets().open(DB_NAME);

        // Path to the just created empty db
        String outfilename = DB_PATH + DB_NAME;

        //Open the empty db as the output stream
        OutputStream myoutput = new FileOutputStream(outfilename);

        // transfer byte to inputfile to outputfile
        byte[] buffer = new byte[1024];
        int length;
        while ((length = myinput.read(buffer)) > 0) {
            myoutput.write(buffer, 0, length);
        }

        //Close the streams
        myoutput.flush();
        myoutput.close();
        myinput.close();
    }
    public void opendatabase() throws SQLException {
        //Open the database
        String mypath = DB_PATH + DB_NAME;
        myDataBase = SQLiteDatabase.openDatabase(mypath, null, SQLiteDatabase.OPEN_READWRITE);
    }

    @Override
    public void onCreate(SQLiteDatabase sqLiteDatabase) {
        sqLiteDatabase.execSQL(MyGolas.CREATE_TABLE);
    }

    @Override
    public void onUpgrade(SQLiteDatabase sqLiteDatabase, int i, int i1) {
        if(i1==2)
        {
            sqLiteDatabase.execSQL(MyGolas.CREATE_TABLE);
        }
    }

    public void deleteNote(MyGolas note) {
        SQLiteDatabase db = this.getWritableDatabase();
        db.delete(MyGolas.TABLE_NAME, MyGolas.COLUMN_ID + " = ?",
                new String[]{String.valueOf(note.getId())});
        db.close();
    }
    public List<MyGolas> getAllGOLES() {
        List<MyGolas> notes = new ArrayList<>();

        // Select All Query
        String selectQuery = "SELECT  * FROM " + MyGolas.TABLE_NAME + " ORDER BY " +
                MyGolas.COLUMN_TIMESTAMP + " DESC";

        SQLiteDatabase db = this.getWritableDatabase();
        Cursor cursor = db.rawQuery(selectQuery, null);

        // looping through all rows and adding to list
        if (cursor.moveToFirst()) {
            do {
                MyGolas note = new MyGolas();
                note.setId(cursor.getInt(cursor.getColumnIndex(MyGolas.COLUMN_ID)));
                note.setTitle(cursor.getString(cursor.getColumnIndex(MyGolas.COLUMN_title)));
                note.setNote(cursor.getString(cursor.getColumnIndex(MyGolas.COLUMN_NOTE)));
                note.setTimestamp(cursor.getString(cursor.getColumnIndex(MyGolas.COLUMN_TIMESTAMP)));

                notes.add(note);
            } while (cursor.moveToNext());
        }

        db.close();

        return notes;
    }
    public ArrayList<String> getmessage() {
        ArrayList<String> contactList = new ArrayList<String>();
        String selectQuery;
            selectQuery = "SELECT * FROM notification"  ;
        SQLiteDatabase db = this.getWritableDatabase();
        Cursor cursor = db.rawQuery(selectQuery, null);
        if (cursor.moveToFirst()) {
            do {
                contactList.add(cursor.getString(9));
            } while (cursor.moveToNext());
        }
        return contactList;
    }

    public String getgolas() {
        String result ="";
        String selectQuery;
        selectQuery = "SELECT  title FROM mygolse"  ;
        SQLiteDatabase db = this.getWritableDatabase();
        Cursor cursor = db.rawQuery(selectQuery, null);
        if (cursor.moveToFirst()) {
            do {
             result = cursor.getString(0);
            } while (cursor.moveToNext());
        }
        return result;
    }
}