Android Question [Solved]Check if Gmail App is Installed

'1. Add a new app manifest queries section
AddManifestText(<queries>
<package android:name="com.google.android.gm"/>
</queries>)

'2. Method Function
Private Sub isPackageInstalled(packageName As String) As Boolean
    Dim Intent1 As Intent
    Dim pm As PackageManager
    Intent1 = pm.GetApplicationIntent(packageName)
    Return Intent1.IsInitialized
End Sub

'3. Calling Sub
Private Sub btnEmail_Click
    If isPackageInstalled("com.google.android.gm") = False Then
        ToastMessageShow("GMAIL App is required to send emails.", True)
    Else
        ToastMessageShow("Gmail Installed", True)
    End If
    Email.Email_Result
End Sub