Question

Do I create a create SeekBar that uses decimal values?

For example, it would display

0.0, 0.1, 0.2, 0.3, …, 5.5, 5.6, 5.7, …, 9.9, 10.0

Answer 1

A SeekBar defaults to a value between 0 and 100. When the onProgressChanged function is called from the SeekBar’s change listener, the progress number is passed in the progress parameter.

If you wanted to convert this progress into a decimal from 0.0 -> 10.0 to display or process, all you would need to do is divide the progress by 10 when you receive a progress value, and cast that value into a float. Here’s some example code:

aSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
    @Override
    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
        float value = ((float)progress / 10.0);
        // value now holds the decimal value between 0.0 and 10.0 of the progress
        // Example:
        // If the progress changed to 45, value would now hold 4.5
    }

    @Override
    public void onStartTrackingTouch(SeekBar seekBar) {}
    @Override
    public void onStopTrackingTouch(SeekBar seekBar) {}
});