从BlackBerry浏览器中的URL启动应用程序？

我正在开发一个应用程序，我将在其中启动我的应用程序的浏览器中启动一个URL。从BlackBerry浏览器中的URL启动应用程序？

假设如果我点击google.com，然后按输入，它会启动我的应用程序。为此，我尝试了HttpFilterRegistry API。

仅供参考我正在使用HTTPFilterDemo应用程序。但目前在启动应用程序时，我得到了NullPointerException。

我写了下面的代码我的openFilter方法：

public Connection openFilter(String name, int mode, boolean timeouts) throws IOException { 
    Logger.out("Protocol", "it is inside the openFilter method"); 
    _url = name.substring(2); 
    _requestHeaders = new HttpHeaders(); 
    _responseHeaders = new HttpHeaders(); 
    _responseHeaders.setProperty(HttpProtocolConstants.HEADER_CONTENT_TYPE, "text/html"); 
    Logger.out("Protocol", "here it is come ::::44444444"); 
    final int modHandle = CodeModuleManager.getModuleHandle("AppLaunchBrowser"); 
    Logger.out("Protocol", "here is the module handle:::" + modHandle); 
    final ApplicationDescriptor[] apDes = CodeModuleManager.getApplicationDescriptors(modHandle); 
    final ApplicationDescriptor appDescriptor = new ApplicationDescriptor(apDes[0], new String[] {}); 
    Logger.out("Protocol", "here is the app descriptor:::" + appDescriptor); 
    try { 
     final int appCode = ApplicationManager.getApplicationManager().runApplication(appDescriptor, true); 
     Logger.out("Protocol", "here is the app code:::" + appCode); 
    } catch (ApplicationManagerException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 
    // } 
    return this; 
}

和应用程序类，我创建替代的切入点和使用象下面这样：

public class AppLaunch extends UiApplication{ 
    public static void main(String args[]) 
    { 
     Logger.out("AppLaunch", args+"length of the arguments::::" +args.length); 
     if((args != null) && (args.length > 0) && (args[0].equals("background"))) 
     { 
      Logger.out("AppLaunch", "in the alternate entry point"); 
//   Logger.out("AppLaunch", args+"length of the arguments::::" +args.length); 
      HttpFilterRegistry.registerFilter("www.google.co.in", "com.innominds.ca", false); 


     } 
     else 
     { 
      Logger.out("AppLaunch", "Inside the Applaunch"); 
      AppLaunch theApp = new AppLaunch(); 
      theApp.requestForeground(); 
      Logger.out("AppLaunch", "created the app launch object"); 
      theApp.enterEventDispatcher(); 
//   Logger.out("AppLaunch", "in the alternate entry point"); 
//   HttpFilterRegistry.registerFilter("www.google.co.in", "com.innominds.ca", false); 
     } 
    } 

    public AppLaunch() 
    { 
     checkPermissions(); 
     showTestScreen(); 
    } 


    private void checkPermissions() 
    { 

     ApplicationPermissionsManager apm = ApplicationPermissionsManager.getInstance(); 
     ApplicationPermissions original = apm.getApplicationPermissions(); 

     if(original.getPermission(ApplicationPermissions.PERMISSION_BROWSER_FILTER) == ApplicationPermissions.VALUE_ALLOW) 
     { 
      // All of the necessary permissions are currently available 
      return; 
     } 

     ApplicationPermissions permRequest = new ApplicationPermissions(); 
     permRequest.addPermission(ApplicationPermissions.PERMISSION_BROWSER_FILTER); 

     boolean acceptance = ApplicationPermissionsManager.getInstance().invokePermissionsRequest(permRequest); 

     if(acceptance) 
     { 
      // User has accepted all of the permissions 
      return; 
     } 
     else 
     { 

     } 
    } 

    private void showTestScreen() 
    { 
     UiApplication.getUiApplication().pushScreen(new AppLaunchScreen()); 
    } 
}

来源

2012-12-17 Arindam Mukherjee

你可以发布NPE被引发的行吗？ –

我没有得到它扔的地方。因为evry登录代码正在执行，除非在AppLaunch类中，我正在创建备用入口点.. –

我想调试它..但它告诉调试文件丢失..所以我无法找出NPE的确切位置.. –

最后我能解决这个问题。实际上NPE正在进入一些其他的回调方法，因为我实现了FilterBaseInterface。

来源

2012-12-18 06:29:09

从BlackBerry浏览器中的URL启动应用程序？

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