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Thread: Calling Native Code in Android from JavaScript using Sencha Touch and PhoneGap 2.2.0

  1. #1
    Sencha Premium Member IAmCoder's Avatar
    Join Date
    Mar 2012
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    Default Calling Native Code in Android from JavaScript using Sencha Touch and PhoneGap 2.2.0

    Here is a simple example of how to call native code in Android from within a Sencha Touch application, stripped down to the core elements:

    It took me way longer than it should because I kept getting the Class not found error when I pressed the button, which means that something went wrong when trying to load the native class referenced in \res\xml\config.xml. I had it failing because there was no icon in \res\drawable\, believe it or not. And at some point I had an outdated config.xml in the \bin\ and \gen\ directories.

      <title>BTek PhoneGap Plugin</title>
      <link rel="stylesheet" type="text/css" href="sencha-touch.css"/>
      <script type="text/javascript" src="sencha-touch-all.js"></script>
      <script type="text/javascript" src="cordova-2.2.0.js"></script> 
      <script type="text/javascript" src="app.js"></script>
      <script type="text/javascript">
        function CallNative() {
            cordova.exec(SuccessHandler, ErrorHandler, 'BTekPlugin', '', []);
        function SuccessHandler (result) { 
              Ext.Msg.alert(result.title, result.details); 
        function ErrorHandler (error) { 
               alert("Native call failed: " + error);
     <plugin name="BTekPlugin" value=""/>
    import org.json.JSONArray;
    import org.json.JSONException;
    import org.json.JSONObject;
    import org.apache.cordova.api.Plugin;
    import org.apache.cordova.api.PluginResult;
    public class BTekPlugin extends Plugin {
      public BTekPlugin() {
      public PluginResult execute(String action, JSONArray args, String callbackId)
        // Create the response JSON
        JSONObject jsonResponse = new JSONObject();
          jsonResponse.put("title", "Hello JavaScript!");
          jsonResponse.put("details", "How are you today?");
        catch(JSONException e)
          // Raise the error event
          this.error(e.getMessage(), callbackId);
        // Raise the success event
        this.success(new PluginResult(PluginResult.Status.OK, jsonResponse), callbackId);
        return new PluginResult(PluginResult.Status.OK, "success");
    PhoneGap Plugin.png

  2. #2
    Sencha - Sr Software Engineer mitchellsimoens's Avatar
    Join Date
    Mar 2007
    Gainesville, FL
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    Thanks for sharing!
    Mitchell Simoens @LikelyMitch
    Sencha Inc, Senior Software Engineer
    Learn BBCode and use it! Checkout the CODE tag!

    Check out my GitHub, lots of nice things for Ext JS and Sencha Touch

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