MPAndroidchart No chart Data available

Question

I am having problems with MPAndroidChart. I am adding temperature and Humidity Data to the chart, but it always displays "no chart Data available". Anybody here who can see where my bug is? I would be super grateful!

//Create Data

                //set size of data
                int size = list.size();
                if (size > 24){ size = 24;}

                //create lists form temp and hum
                ArrayList<Entry> temps = new ArrayList<Entry>();
                ArrayList<Entry> hums = new ArrayList<Entry>();


                //fill list temp with values
                for (int i = 0; i < size; i++){
                    Entry value = new Entry(Math.round(list.get(list.size()-size + i).temp), (size-i));
                    temps.add(value);
                }

                //fill list hum with values
                for (int i = 0; i < size; i++){
                    Entry value = new Entry(Math.round(list.get(list.size()-size + i).hum), (size-i));
                    hums.add(value);
                }

                //other views on screen
                date.setText(dateString);
                time.setText(timeString);
                temp.setText(tempString);
                hum.setText(humString);


                //adding Data and description to array
                LineDataSet setTemp = new LineDataSet(temps, "Temperature");
                setTemp.setAxisDependency(YAxis.AxisDependency.LEFT);
                LineDataSet setHum = new LineDataSet(hums, "Humidity");
                setHum.setAxisDependency(YAxis.AxisDependency.LEFT);

                //adding Arrays to DataSet
                ArrayList<ILineDataSet> dataSets = new ArrayList<ILineDataSet>();
                dataSets.add(setTemp);
                dataSets.add(setHum);
                ArrayList<String> xVals = new ArrayList<String>();

                //Adding x values of range size
                for (int i = 0; i < size; i++ ){
                    xVals.add(String.valueOf(i));
                }

                //add Data and create chart
                LineData data = new LineData(xVals, dataSets);
                chart.setData(data);
                chart.invalidate();

            }
        });

Try changing (size-i) to i in the Entry constructor. Let me know if that changes anything. — Philipp Jahoda
Hello Philipp, Thanks for taking a look at my problem. Sadly that did not resolve the problem. I must be using the code wrong somewhere. — Markus Schmitz
My best guess is that it has someting to do with your size variable. Have you tried removing it and see what happens? — Philipp Jahoda
Hey which version of MpAndroidchart are you using. I am using 2.1.5 and am not able to import ILineDataSet — Komal Gupta

rain_ rain_ · Accepted Answer · 2016-02-11T13:01:12

I was looking at this post long time. The only thing I can think about is this line:

Math.round(list.get(list.size()-size + i).hum

What's that .hum ? Could it generate an unsupported type for Entry? The resolution to this issue intrigues me so much since Mr. Phil J. did not found the answer yet.

MPAndroidchart No chart Data available

2 Answers