Android: How to send message programmatically by using WhatsApp, WeChat?

Question

How to use messaging in android application by using WhatsApp and WeChat?

Actually requirement is to send sms using WhatsApp and We

Answer 1

To send direct message to any whatsapp user use following code :

private void sendMessageToWhatsAppContact(String number) {
    PackageManager packageManager = context.getPackageManager();
    Intent i = new Intent(Intent.ACTION_VIEW);
    try {
        String url = "https://api.whatsapp.com/send?phone=" + number + "&text=" + URLEncoder.encode(CommonStrings.SHARING_APP_MSG, "UTF-8");
        i.setPackage("com.whatsapp");
        i.setData(Uri.parse(url));
        if (i.resolveActivity(packageManager) != null) {
            context.startActivity(i);
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}