Share text with WhatsApp on Android "Can't send empty message"

Question

When I'm trying to share text using intent mechanism and pick WhatsApp, it says:

Can't send empty message

I've read an official docs about Android integration here: https://faq.whatsapp.com/en/android/28000012

My code:

public void shareText(String label, CharSequence title, CharSequence body) {
        final Intent intent = new Intent(Intent.ACTION_SEND);
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        intent.setType("text/plain");
        intent.putExtra(Intent.EXTRA_SUBJECT, title.toString());
        intent.putExtra(Intent.EXTRA_TEXT, TextUtils.concat(title, body));

        final Intent chooser = Intent.createChooser(intent, label);
        chooser.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

        if (chooser.resolveActivity(mContext.getPackageManager()) != null) {
            mContext.startActivity(chooser);
        }
 }

Am I doing something wrong? Or is it bug with WhatsApp messenger?

P.S. arguments title and body are not empty in my case.

Answer 1

What you have done is,

intent.putExtra(Intent.EXTRA_TEXT, TextUtils.concat(title, body));

while TextUtils.concat(title, body) returns CharSequence probably that whatsapp does not support.

You have to pass the value as a String leaving you two solutions.

• You can convert the whole to a String by toString()

intent.putExtra(Intent.EXTRA_TEXT, TextUtils.concat(title, body).toString());

• Converting it a String before passing it to intent.

String someValue = TextUtils.concat(title, body).toString();

and adding it here as,

intent.putExtra(Intent.EXTRA_TEXT, someValue);

Answer 2

Here You can send data from your app to Whatsapp and any other like a messenger

Intent share = new Intent(Intent.ACTION_SEND);
share.setType("text/plain");
share.putExtra(Intent.EXTRA_TEXT,   " Your text ");
startActivity(Intent.createChooser(share,  " Your text "));