Question

我使用MPAndriodChart，我想将多个ScatterDataSet与一个LineDataSet组合

CombinedChart chart = (CombinedChart) findViewById(R.id.chart);
CombinedData chartData = new CombinedData();
ScatterData scatterData = data.getScatterData();
chartData.setData(scatterData);
chartData.setData(data.getLineData());
chart.setData(chartData);
chart.invalidate();

Line正常工作但是在ScatterData上我得到了NegativeArraySizeException：

java.lang.NegativeArraySizeException: -10 
 at com.github.mikephil.charting.utils.Transformer.generateTransformedValuesScatter(Transformer.java:110)
 at com.github.mikephil.charting.renderer.ScatterChartRenderer.drawValues(ScatterChartRenderer.java:106)
 at com.github.mikephil.charting.renderer.CombinedChartRenderer.drawValues(CombinedChartRenderer.java:95)

我传递的内容似乎是完全有效的数据：

[Entry, x: 5.5699 y (sum): -0.5020655, Entry, x: 4.2394395 y (sum): 0.21312527, Entry, x: 3.5619884 y (sum): 0.45908606, Entry, x: 0.64683366 y (sum): 0.13041855, Entry, x: 5.2063227 y (sum): -0.3853986, Entry, x: 4.3252435 y (sum): -0.31767017, Entry, x: 5.9881873 y (sum): 0.2213649, Entry, x: 4.0705724 y (sum): 0.28665566, Entry, x: 3.1188233 y (sum): 0.33925194, Entry, x: 4.1558833 y (sum): 0.349967, Entry, x: 5.616512 y (sum): 0.76478994, Entry, x: 3.5945375 y (sum): 0.29368117, Entry, x: 4.4086146 y (sum): 0.085573964, Entry, x: 3.894157 y (sum): 0.6461969, Entry, x: 3.2885375 y (sum): 0.9365549, Entry, x: 3.2674248 y (sum): 0.86991787, Entry, x: 6.1956058 y (sum): -0.42813104, Entry, x: 5.3698792 y (sum): -0.22390603, Entry, x: 4.403929 y (sum): 0.08022818, Entry, x: 5.3132596 y (sum): 0.022318058, Entry, x: 5.8791475 y (sum): -0.0365236, Entry, x: 2.5035682 y (sum): -0.22752166]
[Entry, x: 0.7963708 y (sum): 0.12507936, Entry, x: 1.2852284 y (sum): 0.44808355]
[Entry, x: 6.883231 y (sum): -0.15286136]
[Entry, x: 5.358568 y (sum): -0.9050642]
[Entry, x: 6.221557 y (sum): -0.87225515]
[Entry, x: 3.392378 y (sum): -0.06295807, Entry, x: 3.9897776 y (sum): 0.21555887]
[Entry, x: 1.9450009 y (sum): 0.039005354, Entry, x: 3.6542387 y (sum): 0.13659218, Entry, x: 2.7017648 y (sum): -0.532821, Entry, x: 3.6622684 y (sum): 0.6588981, Entry, x: 4.9132524 y (sum): -0.04732264]

Answer 1

大多数情况下NegativeArraySizeException是由MPAndroidChart库的新3.0.0-beta1版本中的未排序数据引起的。对数据进行排序可以解决问题。

这是因为库依赖于排序数据进行性能优化，因此无法正常处理未排序数据。

NegativeArraySizeException将Scatter数据添加到CombinedChart

1 个答案: