MpAndroidChart CandleStick Showing a range with dual seekbar? - mpandroidchart

Question

I am using a dual seekbar to select the min and max range.
It works when taking the max range down, but when pulling the min range up it fails.
The range seekbar OnRangeSekkbarChangedListener:
RangeSeekBar.OnRangeSeekBarChangeListener<Integer> skListener = new RangeSeekBar.OnRangeSeekBarChangeListener<Integer>() {
#Override
public void onRangeSeekBarValuesChanged(RangeSeekBar<?> bar, Integer minValue, Integer maxValue) {
int max = bar.getSelectedMaxValue().intValue();
int min = bar.getSelectedMinValue().intValue();
mChart.resetTracking();
//Hold of actual drawing lists
List<CandleEntry> y = new ArrayList<CandleEntry>();
List<String> x = new ArrayList<String>();
for (int i = min; i < max ; i++){
//get candle entry from
CandleEntry current = yVals.get(i);
String currentDate = xVals.get(i);
y.add(current);
x.add(currentDate);
}
//Show less of the chart and invalidate
CandleDataSet mSet = new CandleDataSet(y, "Price");
mSet.setDecreasingColor(getResources().getColor(R.color.black));
mSet.setIncreasingPaintStyle(Paint.Style.FILL);
mSet.setIncreasingColor(getResources().getColor(R.color.accent));
mSet.setDecreasingPaintStyle(Paint.Style.FILL);
mSet.setShadowColor(getResources().getColor(R.color.black));
mCandledata = new CandleData(x, mSet);
//Don't show value text
mCandledata.setDrawValues(false);
mChart.setData(mCandledata);
mChart.invalidate();
}
};
rangeSeekBar.setOnRangeSeekBarChangeListener(skListener);
Results Sceenshots:
Initial Load:
Max Range pulled to near beginning:
Min Range pulled to near end:

Answer 1

You need to change the xIndex of the candle Entries. The first candle needs to have an xIndex of 0
int xIndex = 0;
for (int i = min; i < max ; i++){
//get candle entry from
CandleEntry current = yVals.get(i);
String currentDate = xVals.get(i);
//set the xIndex value
x.setXIndex(xIndex);
y.add(current);
x.add(currentDate);
xIndex++;
}