[jira] [Updated] (CB-4850) Write the device UUID only when it does not exist

["Jesse MacFadyen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CB-4850?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jesse MacFadyen updated CB-4850:
--------------------------------

    Component/s: WP7
    
> Write the device UUID only when it does not exist
> -------------------------------------------------
>
>                 Key: CB-4850
>                 URL: https://issues.apache.org/jira/browse/CB-4850
>             Project: Apache Cordova
>          Issue Type: Improvement
>          Components: WP7, WP8
>    Affects Versions: 3.0.0
>         Environment: Any
>            Reporter: Jonathan Naguin
>            Assignee: Jesse MacFadyen
>            Priority: Minor
>
> Currently, the device UUID is writen back to the IsolatedStorageFile in every run even when it is not necessary. 
> On CordovaView.xaml.cs:
> {code}
> string deviceUUID = "";
> using (IsolatedStorageFile appStorage = IsolatedStorageFile.GetUserStoreForApplication())
> {
>     try
>     {
>         IsolatedStorageFileStream fileStream = new IsolatedStorageFileStream("DeviceID.txt", FileMode.Open, FileAccess.Read, appStorage);
>         using (StreamReader reader = new StreamReader(fileStream))
>         {
>             deviceUUID = reader.ReadLine();
>         }
>     }
>     catch (Exception /*ex*/)
>     {
>         deviceUUID = Guid.NewGuid().ToString();
>     }
>     Debug.WriteLine("Updating IsolatedStorage for APP:DeviceID :: " + deviceUUID);
>     IsolatedStorageFileStream file = new IsolatedStorageFileStream("DeviceID.txt", FileMode.Create, FileAccess.Write, appStorage);
>     using (StreamWriter writeFile = new StreamWriter(file))
>     {
>         writeFile.WriteLine(deviceUUID);
>         writeFile.Close();
>     }
> }
> {code}
> The writing code should be moved into the catch after creating a new one as:
> {code}
> catch (Exception /*ex*/)
>     {
>         deviceUUID = Guid.NewGuid().ToString();
>         IsolatedStorageFileStream file = new IsolatedStorageFileStream("DeviceID.txt", FileMode.Create, FileAccess.Write, appStorage);
>         using (StreamWriter writeFile = new StreamWriter(file))
>         {
>             writeFile.WriteLine(deviceUUID);
>             writeFile.Close();
>         }
>     }
> {code}

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