Pass data from activity to service ? Android

Question

How many I can pass data to Service by Intent . I am passing 7 data to Service but the latter two is null .

This code is in MainActivity.class :

    Intent Class = new Intent(MainActivity.this, Class_Service.class);
    Class.putExtra("Url", URL);
    Class.putExtra("Username", Username);
    Class.putExtra("PASSWORD", PASSWORD);
    Class.putExtra("Mobile", Mobile);
    Class.putExtra("HQStudentID", HQStudentID);
    Class.putExtra("_SchoolCode", SchoolCode);
    Class.putExtra("_GroupID", GroupID);

And here is in my Service :

public class Class_Service extends Service{
    String Webresponse;
    String URL ;
    String Username;
    String PASSWORD;
    String Mobile;
    String HQStudentID;
    String SchoolCode;
    String GroupID;


    @Override
    public IBinder onBind(Intent arg0) {
        return null;
    }

    @Override
    public void onStart(Intent intent, int startId) {
        handleStart(intent, startId);
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        handleStart(intent, startId);
        return START_NOT_STICKY;
    }

    void handleStart(Intent intent, int startId) {
        URL = intent.getStringExtra("Url");
        Username = intent.getStringExtra("Username");
        PASSWORD = intent.getStringExtra("PASSWORD");
        Mobile = intent.getStringExtra("Mobile");
        HQStudentID = intent.getStringExtra("HQStudentID");
        GroupID = intent.getStringExtra("_GroupID");
        SchoolCode = intent.getStringExtra("_SchoolCode");

        Log.i("test", "HERE : : :" + GroupID + "::" + SchoolCode);
    } 
}

All of parameter have value but GroupID and SchoolCode are null !!!

When I pass GroupID and SchoolCode from MainActivity have value.

Answer 1

There are 2 things that may cause the issue :

1 : You are trying to send an integer and trying to get it as String on Service. Check the data types and fix if there is anything wrong.

2 : The data may be null. Check all datas before putExtra on Logcat to see all of them has some values.

Hope it helps.

Best, Mack.

Answer 2

如果要传递整数，请使用intent.getIntExtras（“ tag”），并使用字符串intent.getStringExtra（“ tag”）。