Display of sizes of different icons on different devices

I'm trying to dynamically set a different icon based on the device. I've set up another point of entry in the xml of the application descriptor file. It passes an argument of "icon" in my application main().

The entry point is triggered as expected (installation of the application and to the power of the cycle), but he has problems when calling updateIcon() on some phones (for example BB 8900 T-Mobile version 4.6.1.231 (Platform 4.2.0.108)). Looks like it fails on phones with OS 4.7 and works very well on phones on or above this level.

The error I get is IllegalArgumentException: "Module with handle [XXXX] and [X] index has no application entry point. Try to set the index to both 0 and 1 on updateIcon() has the same problem.

It is only happening when I install the application OTA (works on the 8900 charging cable).

I have my code below from from the section of this topic:

public static void main(String[] args) { if ( args != null && args.length > 0 && args[0].equals("icon") ){      MyApp instance = new MyApp(true); } else {      MyApp instance = my MyApp(false); } instance.enterEventDispatcher();}

public MyApp(boolean autostart){   if(autostart){        Bitmap loadedIcon;        int width = HomeScreen.getPreferredIconWidth();       int height = HomeScreen.getPreferredIconHeight();

      //conditional logic to initialize "loadedIcon" based on device icon width

      final Bitmap icon = loadedIcon;       invokeLater(new Runnable(){                 public void run(){                    ApplicationManager myAppManager = ApplicationManager.getApplicationManager();                     boolean keepGoing = true;                     while (keepGoing){                        //Check if the BlackBerry has completed its startup process.                          if (myAppManager.inStartup()){                            //The BlackBerry is still starting up, sleep for 1 second.                            try {                                 Thread.sleep(1000);                           } catch (Exception ex) {                                //Couldn't sleep, handle exception.                             }                         } else {                              //The BlackBerry has finished its startup process.                            //Set the rollover icons.                             try {                                 HomeScreen.updateIcon(icon, 0);                               HomeScreen.setRolloverIcon(icon, 0);                              } catch(Exception e){                                   System.out.println("setting icon caught: " + e.getMessage());                                 e.printStackTrace();                            }                             keepGoing = false;                        }                     }                     //Exit the application.                   System.exit(0);               }             }); } else {      //load the app normally, with UI. }}

I use Eclipse plug-in 1.1.2 to build my app, but article is older, obsolete 1.0 plugin, maybe the instructions no longer apply and must be updated?

Understood the problem, basically it is a condition of race as described here which is also in addition to restarting the device. It happens when the application is installed OTA and the entry point to attempts to define the icon when the application is not fully registered with the device. In a Word, it is the valid response (in invokeLater):

int failedTries = 0; //failed attempt counter (maximum of 5 attempts for this example)public void run(){                     ApplicationManager myAppManager = ApplicationManager.getApplicationManager();                     boolean keepGoing = true;                     while (keepGoing){                        //Check if the BlackBerry has completed its startup process.                          if (myAppManager.inStartup()){                            //The BlackBerry is still starting up, sleep for 1 second.                            try {                                 Thread.sleep(1000);                           } catch (Exception ex) {                                //Couldn't sleep, handle exception.                             }                         } else {                              //The BlackBerry has finished its startup process.                            //Set the rollover icons.                             try {                                 HomeScreen.updateIcon(icon, 0);                               HomeScreen.setRolloverIcon(icon, 0);                                          keepGoing = false;                                          //Icon should of been set at this point                             } catch(Exception e){                                 System.out.println("setting icon caught: " + e.getMessage());                                 e.printStackTrace();                                          failedTries++;                                    try {                                     Thread.sleep(2500);                               } catch (Exception ex) {                                    //Couldn't sleep, handle exception.                                 }                                          //Since the attempt failed, we sleep for two and a half secs and try again.                              }                             if(failedTries > 4){                               //Worst case. Should revert to a default icon if it fails to be set after five tries.                                 keepGoing = false;                            }                         }                     }                     //Exit the application.                   System.exit(0);               }

Catch the exception, and then sleep for about two seconds and leave the loop to set the icon again, because it will succeed on the second or third try (at that time that the app must be registered with the device, including its entry point). In addition, to ensure a maximum test because you do not want to create a possibility of an infinite loop if for some reason, it fails to set the icon each time.

Tags: BlackBerry Developers

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