Android Updating Ui Thread Elements - Best Practice?

I have an app that shows some measurement values like temperature, speed and so on. I want to stick more or less to the MVC pattern so I got something that receives the values when

Solution 1:

Have you tried AsyncTask? You can create a class that extends AsyncTask and contains a simple callback interface, something like:

classCalculationTaskextendsAsyncTask<Integer, Integer> {
...
    publicinterfaceCallback{
        voidonCalculationComplete(Integer result);
    }
...
}

Now, override doInBackground() method from the AsyncTask and put the program logic for the calculation in it.

@Override
protectedintdoInBackground(Integer... params){
    makeNeededCalculation();
    ...
}

Once the calculation is complete, the AsyncTask will call its onPostExecute() method. In this method you can refer to your callback interface.

@OverrideprotectedvoidonPostExecute(Integer result){
    mCallback.onCalculationComplete(result);
}

Then you should create an instance of your AsyncTask in the class that receives the values bluetooth and implement the callback interface there.

newCalculationTask(this, newCalculationTask.Callback(){

    @OverridepublicvoidonCalculationComplete(Integer result){
        mView.setText("The new value is "+result);
    }
}).execute(valueFromBluetooth);