Read Image - JavaME

what problem are you having with createImage()?
Whats 'input'?

input is InputStream input = filenames.openInputStream();      

I have a set of images, when i use createImage(), it either returns the created image or throws IOException, Exception. But there are some images that doesn't go anywhere. I thought there might be other api that i can try out.

none that I'm aware of.

Do you have any idea why the program will stop when i try to use createImage() without throwing any exception?

I am able to open it in phone imageviewer but it can't be processed using my program.

could be a deadlock, hard to say without see your code

This is the code.

FileConnection filenames = (FileConnection)Connector.open(main_directory +  "testFolder" + "/"
                                                + imageName ,Connector.READ);
if (filenames.exists()) { InputStream input = filenames.openInputStream();      
try {      Image image = Image.createImage(input);            
if(image != null){               
                                                      updateContent("READING: " + imageName);
                                                }
                                                else continue;                  
                                          }
                              
                                          catch (IOException e) {                                                
                                                updateContent("READING: " + imageName);                                                

                                          } catch (Exception e)  {
                                                updateContent("READING: " + imageName);      

                                          }
                                          input.close();      
                                    }
                                    filenames.close();

public void image()
            { for(;;)
                  {
                        String content = "", description = null, Exceptiondescription=null;
                        JSONObject outer = new JSONObject();            

                        try{
                              FileConnection fc = (FileConnection)Connector.open(main_directory + imageFolder + "/");
                              FileConnection file = (FileConnection)Connector.open(main_directory + imageFolder + ".json" ,Connector.READ_WRITE);                              
                              if(!file.exists()) { file.create(); }
                              file.setWritable(true);
                              OutputStream out = file.openOutputStream();
                              Enumeration filelist = fc.list("*", true);
                              while(filelist.hasMoreElements()) {
                                    imageName = (String) filelist.nextElement();
                                    FileConnection filenames = (FileConnection)Connector.open(main_directory + imageFolder + "/"
                                                + imageName ,Connector.READ);
                                    if (filenames.exists()) {
                                          InputStream input = filenames.openInputStream();      
                                          try {
                                                Image image = Image.createImage(input);
                                                if(image != null){
                                                      toJSON(outer, "OK", "filename:" + imageName);  
                                                }
                                                else continue;                                                
                                          }
                                          catch (IOException e) {
                                                description = e.toString();
                                                toJSON(outer,"Caught IOException:" + description, "filename:" + imageName);
                                                

                                          } catch (Exception e)  {
                                                Exceptiondescription = e.toString();
                                                toJSON(outer, " Caught Exception:" + Exceptiondescription, "filename:" + imageName);
                                          }                                    
                                          input.close();      
                                    }
                                    filenames.close();
                              }      
                              file.close();
                              fc.close();
                              out.write(outer.toString().getBytes());
                              out.flush();
                              out.close();                                          
                              updateContent("READING: " + "COMPLETED");                   
                        }                                          
                        catch (IOCancelledException e)
                        {
                              System.out.println(e.toString());
                              return;
                        }
                        catch (IOException e)
                        {
                              errorDialog("IO EXCEPTION: " + e.toString());
                              return;
                        }      
                        catch(Exception e){
                              errorDialog("EXCEPTION" + e.toString() );
                        }                  
                  }
            }

I am not sure if it's deadlock. It doesn't look like it.

you repeatedly read the same directory
and if you get an exception you don't close the connections or streams
not sure if thats the cause but worth fixing up

Does it mean that each time I get an exception, i will have to close the connection? Cause, if i close the connection, i wont be able to continue reading the next image file.

If you get an exception, you try and open the connection again

I have tried that and got FileIOException,

I am  trying this..


try {
                                                updateContent("" + input);
                                                Logger.logEventInfo("READING1: " + imageName);
                                                Image image = Image.createImage(input);            
                                                Logger.logEventInfo("READING2: " + imageName);
                                                if(image != null){

                                                      updateContent("READING3: " + imageName);
                                                      toJSON(outer, "OK", "filename:" + imageName);
                                                }
                                                else continue;                                
                                          }                              
                                          catch (IOException e) {
                                          description = e.toString();
                                                updateContent("READING: " + imageName);
                                                Logger.logEventInfo("READING4: " + imageName +"\n");
                                                toJSON(outer, "Caught IOException:" + description, "filename:" + imageName);
                                                
                                          } catch (Exception e)  {

                                                Exceptiondescription = e.toString();
                                                updateContent("READING: " + imageName);      
                                                Logger.logEventInfo("READING5: " + imageName);
                                                toJSON(outer," Caught Exception:" + Exceptiondescription, "filename:" + imageName);
                                          }      
                                          input.close();      
                                    }
                                    filenames.close();


This is what I have in print statement. And when it reach to image3, it will stop.

I: List of files and directories under SD CARD:
I: READING1: image1.jpg
I: READING2: image1.jpg
I: READING1: image2.jpg
I: READING4: image2.jpg
I: READING1: image3.jpg

log details of the exception to help determine why an exception  is occurring

are you sure it hung and that that it isn't just exitting the method?

I don't think it's exiting the method. How do I log the detail of exception?

> I don't think it's exiting the method.

add some logging to check

> How do I log the detail of exception?

log the exception including preferably the stack trace

may have been a problem with the input stream,

This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.