Couldn't display &(ampersand) in message body in gmail while sending mail
<p>I working on mail sending feature in my app. Here in message body of Gmail app while sending mail from my app. It is not displaying <code>&amp;</code> and <code>'</code> which are special characters.</p>

<p><a href="https://i.stack.imgur.com/dKc8J.png" rel="nofollow"><img src="https://i.stack.imgur.com/dKc8J.png" alt="enter image description here"></a></p>

<p>Here is the code.</p>

<pre><code>    //Suject 
    NSString *strSubject = @"Subjet";
    // Message Body
    __block NSMutableString *messageBody = [[NSMutableString alloc] init];

    // gmmmailto
    //googlegmail:///co?subject=&lt;subject text&gt;&amp;body=&lt;body text&gt;
    NSURL *checkGmailAppURL  = [NSURL URLWithString:[@"googlegmail:///co?to=&amp;subject=hi&amp;body=hi" stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];

    if ([[UIApplication sharedApplication] canOpenURL:checkGmailAppURL])
    {
        [messageBody appendFormat:@"%@\n\n", @"Hi I want sell this application &amp; want be free"];
        NSString *urlFinal = [NSString stringWithFormat: @"googlegmail:///co?subject=%@&amp;body=%@", strSubject, messageBody];
        NSURL *emailUrlFinal = [NSURL URLWithString:[urlFinal stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]]];

        [[UIApplication sharedApplication] openURL:emailUrlFinal];
    }
</code></pre>