Android service communicating with other class instances

first let me describe the logic.

• The user enables the Upload Photo button to start the transfer service to upload local photos to the server.

• When the application remains invisible to the user. still keep track of local photos, if new camera photos, upload them immediately. I am using this ContentResolver permission to implement the function.

• After terminating the application, the user can take new photos, restart the application, scan the local SD card and upload a new photo.

Here is my question:

When should I put step2

in the Service in case the action was destroyed. you should use another service to implement your business step3

.

you can find the source on Github

see original snippet below:

    Intent txIntent = new Intent(this, TransferService.class);
    startService(txIntent);
    Log.d(DEBUG_TAG, "start TransferService");

    // bind transfer service
    Intent bIntent = new Intent(this, TransferService.class);
    bindService(bIntent, mConnection, Context.BIND_AUTO_CREATE);
    Log.d(DEBUG_TAG, "try bind TransferService");

    Intent monitorIntent = new Intent(this, FileMonitorService.class);
    startService(monitorIntent);

    Intent cameraUploadIntent = new Intent(this, CameraUploadService.class);
    startService(cameraUploadIntent);

    this.getApplicationContext().getContentResolver().registerContentObserver(
        MediaStore.Images.Media.EXTERNAL_CONTENT_URI, false, cameraUploadObserver);
    `

      

        
        
        
      

    

So what should I be putting as the cameraUploadObserver service?