How to check the value of a custom resource file?

Question

Hi please help to assist me on this.

So I created a res xml file under folder res/values (fm_login.xml) and the content as follow:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="fm_screen_name"></string>
    <string name="fm_email_address"></string>
</resources>

The main purpose is to check this file and make it as a setting page for the app. So later my code is looks like this for main activity

    // Welcome message
    String fm_email_address = getResources().getString(R.string.fm_email_address);

    if (fm_email_address == "") {
        strEmail_Exist = false;
        Toast.makeText(getApplicationContext(), "Please sign up", Toast.LENGTH_SHORT).show();

        // View SignUp Button

    } else {
        strEmail_Exist = true;
        String strScreen_Name = getResources().getString(R.string.fm_screen_name);
        Toast.makeText(getApplicationContext(), "Welcome, " + strScreen_Name, Toast.LENGTH_SHORT).show();

        // View Menu Button
    }

Question, when I emptied the value why I can't check if it's empty? Or should I use null to compare. Because for the first time user I need to make use their name/email is not registered yet in the app/mobile.

Appreciate for the assistance, since it's been pending for a while.

Why you are checking it with xml string value? You can do it by getting edit text values na? — Shailendra Madda, Nov 21 '17 at 08:49
TextUtils.isEmpty(fm_email_address ) = true means fm_email_address is null or "" — Brian Hoang, Nov 21 '17 at 08:50
Thanks both. I'm totally newbie on this. Thanks for the guidance. — seageath, Nov 21 '17 at 09:04

score 0 · Accepted Answer · answered Nov 21 '17 at 08:50

First get your String Resource value in A String variable than use TextUtils.isEmpty to check it is empty or not

String fm_email_address = getResources().getString(R.string.fm_email_address);
if (TextUtils.isEmpty(fm_email_address)) {
        //do something Your String is empty
}else{
        //do something Your String is not empty
}

How to check the value of a custom resource file?

1 Answers1