How to write text to my android IME

I want to send scanned text/barcode to arbitrary application using android input method service.

With

activity.dispatchKeyEvent(sendKeyEvent);

I can simulate KeyEvent direct to my activity. But I'm wondering how can I send the events to MyIME (already activated), to serve arbitrary connected activities. I can't find any answer in internet. Can you give some hints?

Answer to my question is pretty simple: use mechanism of broadcast. I was new in android development and thought that I can directly write input to my own IME.

In this case, I can use LocalBroacastManager like

LocalBroadcastManger lbm = LocalBroadcastManager.getInstance(this)

In my Activity reading scanner input:

Intent intent = new Intent("...");
//put scanned input data to intent
lbm.sendBroadcast(intent);

In my IME:

public void onCreate() {
    lbm.registerReceiver(broadcastReceiver, new IntentFilter("..."))
}

private BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        //get input from intent and send this to inputConnection
    }
}