I have this issue with the xlabels in aChartEngine when there is one value in an ArrayList. I generate my own XLabels for a line chart, but when there is one data array value, i get an unwanted TimeStamp on top of my generated XLabels.
my Code:
private XYMultipleSeriesDataset getDemoDataset() {
Calendar cal = Calendar.getInstance();
Date date = new Date();
date_value = new String[list.size()];
value_value = new String[list.size()];
for(int k = 0; k < list.size(); k++){
date_value[k] = list.get(k).get(DATE);
value_value[k] = list.get(k).get(VALUE);
}
TimeSeries series = new TimeSeries("Line Graph");
for(int j=0; j < date_value.length; j++) {
series.add(formatter.stringToDate(date_value[j]), Integer.parseInt());
}
XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset();
dataset.addSeries(series);
return dataset;
}
setChartSetting:
private void setChartSetting(XYMultipleSeriesRenderer renderer){
renderer.setXRoundedLabels(true);
renderer.setXTitle("DATES");
renderer.setYTitle(kpiname);
renderer.setApplyBackgroundColor(true);
renderer.setFitLegend(false);
renderer.setAxesColor(Color.DKGRAY);
renderer.setShowGrid(true);
renderer.setZoomEnabled(false);
renderer.setXLabels(0);
renderer.setYLabels(10);
renderer.setZoomEnabled(false, false);
renderer.setPanEnabled(false, false);
//String[] date_value = new String[list.size()];
//String[] value_value = new String[list.size()];
if(list.isEmpty() || list.size() == 0 || list == null ){
return;
}
if(name.equals(RECOVERED) || name.equals(CONVERSION)){
largest_size = (int)Double.parseDouble(value_value[0]);
}else{
if(!(value_value.length == 0)){
largest_size = Integer.parseInt(value_value[0]);
}else{
return;
}
}
//used to determine the maximum value for the y-axis
for(int x =0; x < value_value.length; x++){
if(Integer.parseInt(value_value[x]) > largest_size){
largest_size = Integer.parseInt(value_value[x]);
}
}
renderer.setYAxisMax((double)largest_size);
renderer.setYAxisMin(0);
int value_size = value_value.length;
int m = 0;
//int add = value_size/10;
int add = largest_size/10;
/*instance variables for setting the labels on the X-Axis based on weather the values in the array are
* more than 10 items or less*/
double d;
Long l;
Long l1;
double d1;
if(date_value.length <= 1){
int last = date_value.length;
int mod = 0;
//int add_mod = Math.round(last/10);
int add_mod = (int)Math.round((double)Math.round(last));
l = Long.valueOf(formatter.stringToDateReport(date_value[0]).getTime());
d = l.doubleValue();
/*tried this to see if i can remove the timestamp*/
//renderer.addXTextLabel(0.0, "");
//renderer.removeXTextLabel(0.0);
//renderer.clearXTextLabels();
renderer.addXTextLabel(d, date_value[0]);
}
else if(date_value.length < 10){
for(int i = 0; i < date_value.length; i++){
if(i >= date_value.length){
break;
}
l = Long.valueOf(formatter.stringToDateReport(date_value[i]).getTime());
d = l.doubleValue();
renderer.addXTextLabel(d, date_value[i]);
}
} else if(date_value.length >= 10){
int last = date_value.length;
//int last = 28;
//Log.d(TAG, "last is " + last);
int mod = 0;
//int add_mod = Math.round(last/10);
int add_mod = (int)Math.round((double)Math.round(last) /10); // do this to get the decimal value with a double and then round to get nearset whole with int
for(int i =0; i < date_value.length; i++){
if(mod >= date_value.length){
break;
}
l1 = Long.valueOf(formatter.stringToDateReport(date_value[mod]).getTime());
d1 = l1.doubleValue();
renderer.addXTextLabel(d1, date_value[mod]);
mod+=add_mod;
}
}
}
}
and then:
chartView = ChartFactory.getLineChartView(context, getDemoDataset(), setChartSettings(renderer));
When there are multiple values, it plots the graph well with my custom XLabels(format is MMM-yyyy), but when there is only one value in the ArrayList, it generates thats time stamp.
here is an image:
This was a bug, indeed. You can download a version including a fix for it feature here.