Hellocharts android library not rendering chart when there is a single value or when y axis values are same
jomingeorge opened this issue · 2 comments
jomingeorge commented
When i try to generate the graph with a single value, it is just showing an empty graph (It is supposed to show a single dot in the graph indicating the value right?).
The problem also persists if the first and second y axis value is same (When there is just 2 values).
Any ideas why this weird problem occurs?
The code am using is given below
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
List<String> datelist = new ArrayList<String>();
List<Float> weightlist = new ArrayList<Float>();
datelist.add("12/Apr/2020");
weightlist.add(72f);
datelist.add("13/Apr/2020");
weightlist.add(72f);
LineChartView chart = findViewById(R.id.chart);
List<AxisValue> axisValues = new ArrayList<AxisValue>();
List<PointValue> values = new ArrayList<PointValue>();
for (int i = 0; i < datelist.size(); ++i) {
values.add(new PointValue(i, weightlist.get(i)));
axisValues.add(new AxisValue(i).setLabel(datelist.get(i)));
}
Line line = new Line(values).setColor(Color.BLUE).setCubic(false);
line.setHasLabels(true);
List<Line> lines = new ArrayList<Line>();
lines.add(line);
LineChartData data = new LineChartData();
data.setLines(lines);
data.setAxisXBottom(new Axis(axisValues));
data.setAxisYLeft(new Axis());
chart.setLineChartData(data);
}
}
578618770wts commented
i have the same problem,have you found the solution?
V2oD2o commented
Hi, if suddenly someone will help after so much time
final Viewport v = new Viewport(charts[chart].getMaximumViewport());
v.top = (max > 0 ? max : 100);
v.bottom = min;
charts[chart].setMaximumViewport(v);
charts[chart].setCurrentViewport(v);