[aaudio/hello-audio] MainActivity.getBufferSizeInBursts needs comment about android-audio-high-performance

[VandanaYanamachintala]

/* Here one Burst is equal to 192 frames.*/
private int getBufferSizeInBursts(){
//This method will return the size of buffer from the buffer size spinner
@SuppressWarnings("unchecked")
HashMap<String,String> selectedOption = (HashMap<String,String>)
mBufferSizeSpinner.getSelectedItem();
//The buffer size value which is selected from the buffersize spinner is stored in the HashMap selectedOption as key value pair.
String valueKey = getString(R.string.buffer_size_value_key);
//buffer_size_value_key is the name of string which is declared in the strings.xml.

    // parseInt will throw a NumberFormatException if the string doesn't contain a valid integer 
    // representation. We don't need to worry about this because the values are derived from 
    // the BUFFER_SIZE_OPTIONS int array. 
    return Integer.parseInt(selectedOption.get(valueKey)); 

//From the HashMap selectedOption we are getting the value by using the key. Here both the //key and value are of type String. The value which is returned from the get fuction is given
// as input to the parseInt function which will convert the String to Integer value.
}

[dturner]

Thanks for your comments. I have updated the method docs.