Open chat screen of LINE android app with a specific contact

Question

I am trying to load the list of LINE contacts in my Android application and open chat screen with the specific contact on tapping it. I can open the chat screen but I have to manually tap the contact to start the chat with the contact. I have read the available information from https://developers.line.me/en/docs/line-login/using-line-url-scheme/. But it didn't help me out. Also, I cannot find the list of Line contacts either. I get an empty string when I run the program.

Cursor cursor = getContentResolver().query(
    RawContacts.CONTENT_URI,
    new String[] { RawContacts.CONTACT_ID, RawContacts.DISPLAY_NAME_PRIMARY },
    RawContacts.ACCOUNT_TYPE + "= ?",
    new String[] { "jp.naver.line.android" },
    null);

   ArrayList<String> LineContacts = new ArrayList<String>();
   int contactNameColumn = cursor.getColumnIndex(RawContacts.DISPLAY_NAME_PRIMARY);            
 while (cursor.moveToNext())
 {
  LineContacts.add(cursor.getString(contactNameColumn));
 }
  cursor.close();
  Log.d(TAG,LineContacts.size());

Opening the line app using intent.

    String sendText = "line://nv/chat";
    Intent intent = new Intent();
    try {
        intent = Intent.parseUri(sendText, Intent.URI_INTENT_SCHEME);
    } catch (URISyntaxException e) {
        e.printStackTrace();
    }
    startActivity(intent);

score 3 · Answer 1 · answered Jun 29 '18 at 14:35

As per the documentation it looks not possible what are you looking for.

Below is list of the available URL schemes for the LINE app:

Opening the camera and camera roll
Opening the location screen
Sharing your bot account
Opening your bot Timeline and account page
Sending text messages
Opening profile information
Opening common LINE app screens
Opening LINE app settings screens Opening the
Sticker Shop Opening the Theme Shop
Making phone calls with LINE Out

For more details check here

But there is an app called drupe(https://play.google.com/store/apps/details?id=mobi.drupe.app&hl=en) which has this functionality in it. — Waheed Abbas, Jun 29 '18 at 14:44

score 1 · Answer 2 · answered Feb 01 '21 at 07:49

Accordingly new documentation it is possible...

Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
intent.setData(Uri.parse("https://line.me/R/oaMessage/" + "@lineId/"+"?"+"Hi%20there%21"));
context.startActivity(intent);

Refers to https://developers.line.biz/en/docs/line-login/using-line-url-scheme/#sending-text-messages

Open chat screen of LINE android app with a specific contact

2 Answers2