如何获取搜索栏的进度值（实际进度值之前）？

Question

I have a question, How to get the progress value of seekbar, which was BEFORE the actual progress value? How can I do this here is a code which gets tehe actual value of progress on seekbar:

seek.setOnSeekBarChangeListener(new 

OnSeekBarChangeListener() {

    @Override
    public void onStopTrackingTouch(SeekBar seekBar) {
        // TODO Auto-generated method stub
    }

    @Override
    public void onStartTrackingTouch(SeekBar seekBar) {
        // TODO Auto-generated method stub
    }

    @Override
    public void onProgressChanged(SeekBar seekBar, int progress,boolean fromUser) {
        // TODO Auto-generated method stub
        p=progress;
    }
});

This part of code is pretty popular when you are using a seekbar. But I couldn t find any solution how you can get the int progress which was before of the int progress . So I m loking for something like: int progressbefore . Thanks in advance.

Answer 1

Declare a variable progressBefore at the class level:

private int progressBefore = 0;

and these methods:

private int getProgressBefore() {
    return progressBefore;
}

private void setProgressBefore(int p) {
    progressBefore = p;
}

and inside onProgressChanged() check it every time you want to do something and at the end assign to it the new progress :

seek.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
    @Override
    public void onStopTrackingTouch(SeekBar seekBar) {
        // TODO Auto-generated method stub
    }

    @Override
    public void onStartTrackingTouch(SeekBar seekBar) {
        // TODO Auto-generated method stub
    }

    @Override
    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
        int p = getProgressBefore();
        // do something
        setProgressBefore(progress);
    }
});

Answer 2

seek.setOnSeekBarChangeListener(new 

OnSeekBarChangeListener() {
private int prevousProgressValue = 0;
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
    // TODO Auto-generated method stub
}

@Override
public void onStartTrackingTouch(SeekBar seekBar) {
    // TODO Auto-generated method stub
    prevoiusProgresValue = seekBar.getProgress(); //start value;
}

@Override
public void onProgressChanged(SeekBar seekBar, int progress,boolean fromUser) {
    // TODO something with current

    previousProgresValue = progress;
}
});