Question

我正在使用MPAndroidChart。我可以使用静态内容。但是当我尝试使用API集成时。

ArrayIndexOutOfBoundException错误 - 如何解决此问题，

ATAL EXCEPTION：主要处理：com.eengage.toit，PID：15219 java.lang.ArrayIndexOutOfBoundsException：length = 0;索引= 0 在com.github.mikephil.charting.buffer.BarBuffer.addBar（BarBuffer.java:37）在com.github.mikephil.charting.buffer.HorizontalBarBuffer.feed（HorizontalBarBuffer.java:52） at com.github.mikephil.charting.renderer.HorizontalBarChartRenderer.drawDataSet（HorizontalBarChartRenderer.java:66） at com.github.mikephil.charting.renderer.BarChartRenderer.drawData（BarChartRenderer.java:74） at com.github.mikephil.charting.charts.BarLineChartBase.onDraw（BarLineChartBase.java:247）在android.view.View.draw（View.java:14508）在android.view.View.getDisplayList（View.java:13405）在android.view.View.getDisplayList（View.java:13447）在android.view.View.draw（View.java:14225）在android.view.ViewGroup.drawChild（ViewGroup.java:3105）在android.view.ViewGroup.dispatchDraw（ViewGroup.java:2942）在android.view.View.getDisplayList（View.java:13400）在android.view.View.getDisplayList（View.java:13447）在android.view.View.draw（View.java:14225）在android.view.ViewGroup.drawChild（ViewGroup.java:3105）在android.view.ViewGroup.dispatchDraw（ViewGroup.java:2942）在android.view.View.getDisplayList（View.java:13400）在android.view.View.getDisplayList（View.java:13447）在android.view.View.draw（View.java:14225）在android.view.ViewGroup.drawChild（ViewGroup.java:3105）在android.view.ViewGroup.dispatchDraw（ViewGroup.java:2942）在android.view.View.getDisplayList（View.java:13400）在android.view.View.getDisplayList（View.java:13447）在android.view.ViewGroup.dispatchGetDisplayList（ViewGroup.java:3079）在android.view.View.getDisplayList（View.java:13338）在android.view.View.getDisplayList（View.java:13447）在android.view.ViewGroup.dispatchGetDisplayList（ViewGroup.java:3079）在android.view.View.getDisplayList（View.java:13338）在android.view.View.getDisplayList（View.java:13447）在android.view.ViewGroup.dispatchGetDisplayList（ViewGroup.java:3079）在android.view.View.getDisplayList（View.java:13338）在android.view.View.getDisplayList（View.java:13447）在android.view.ViewGroup.dispatchGetDisplayList（ViewGroup.java:3079）在android.view.View.getDisplayList（View.java:13338）在android.view.View.getDisplayList（View.java:13447）在android.view.ViewGroup.dispatchGetDisplayList（ViewGroup.java:3079）在android.view.View.getDisplayList（View.java:13338）在android.view.View.getDisplayList（View.java:13447）在android.view.ViewGroup.dispatchGetDisplayList（ViewGroup.java:3079）在android.view.View.getDisplayList（View.java:13338）在android.view.View.getDisplayList（View.java:13447）在android.view.ViewGroup.dispatchGetDisplayList（ViewGroup.java:3079）在android.view.View.getDisplayList（View.java:13338）在android.view.View.getDisplayList（View.java:13447）在android.view.ViewGroup.dispatchGetDisplayList（ViewGroup.java:3079）在android.view.View.getDisplayList（View.java:13338）在android.view.View.getDisplayList（View.java:13447）在android.view.ViewGroup.dispatchGetDisplayList（ViewGroup.java:3079）在android.view.View.getDisplayList（View.java:13338）在android.view.View.getDisplayList（View.java:13447）在android.view.ViewGroup.dispatchGetDisplayList（ViewGroup.java:3079）在android.view.View.getDisplayList（View.java:13338）在android.view.View.getDisplayList（View.java:13447）在android.view.ViewGroup.dispatchGetDisplayList（ViewGroup.java:3079）在android.view.View.getDisplayList（View.java:13338）在android.view.View.getDisplayList（View.java:13447）在android.view.ViewGroup.dispatchGetDisplayList（ViewGroup.java:3079）在android.view.View.getDisplayList（View.java:13338）在android.view.View.getDisplayList（View.java:13447）在android.view.HardwareRenderer $ GlRenderer.buildDisplayList（HardwareRenderer.java:1577）在android.view.HardwareRenderer $ GlRenderer.draw（HardwareRenderer.java:1449）在android.view.ViewRootImpl.draw（ViewRootImpl.java:2407）在android.view.ViewRootImpl.performDraw（ViewRootImpl.java:2279）在android.view.ViewRootImpl.performTraversals（ViewRootImpl。

API集成详细信息 - 将值添加到列表中是否有任何问题，

class Top10UsersChartDetails extends AsyncTask<String, Void, String> {

@Override
protected void onPreExecute() {
    super.onPreExecute();
}

@Override
protected String doInBackground(String... params) {
    String response = null;
    try {
        response = apiDetails.Top10UsersChartFunc(params[0], params[1]);
    } catch (Exception e) {

    }
    return response;
}

@Override
protected void onPostExecute(String s) {
    super.onPostExecute(s);

    try {
        JSONObject resObj = new JSONObject(s);
        String status = resObj.getString("status");
        String Month = resObj.getString("Month");


            JSONArray userdataDetailsArray = resObj.getJSONArray("userdata");

            for (int j = 0; j < userdataDetailsArray.length(); j++) {
                JSONObject CampaignDetailsArrayObject = userdataDetailsArray.getJSONObject(j);
                String userId = CampaignDetailsArrayObject.getString("userId");
                String UserName = CampaignDetailsArrayObject.getString("UserName");
                String CountRunning = CampaignDetailsArrayObject.getString("Count");
                String position=CampaignDetailsArrayObject.getString("position");
                float fp1 = Float.parseFloat(CountRunning);

                BARENTRY1.add(new BarEntry(fp1,j));
                BarEntryLabels1.add("User#"+position);
            }
            horizontalBarChart.notifyDataSetChanged();
            horizontalBarChart.invalidate();
        } else {
        }
    } catch (Exception e) {
    }

}

}

如何设置x轴和y轴值。

BARENTRY1.add（new BarEntry（fp1，j））; BarEntryLabels1.add（＆＃34;用户＃＆＃34 +位）;

这里设置了值，但是我的x轴和y轴总是这样显示并且fp1值没有设置。请找到屏幕截图

注意：

如何设置x轴和y轴值？
如何设置BarEntry值？
如何更改横向图表Bardataset订单以进行反转？

Answer 1

首先尝试格式化x轴和y轴，然后将值提供给条形图。以下代码可能有助于您理解。

这是轴格式化类。

/**
 * Created by aghatiki on 8/25/2016.
 */
public class MyAxisValueFormatter implements AxisValueFormatter {
    private String[] mValues;
    public MyAxisValueFormatter(String[] values)
    {
        this.mValues = values;
    }
    @Override
    public String getFormattedValue(float value, AxisBase axis) {
        return mValues[(int) value];
    }

    @Override
    public int getDecimalDigits() {
        return 0;
    }

这是将值添加到BarEntry的类。请看下面的内容：

public class MainActivity extends AppCompatActivity {

    BarChart barChart;
    String[] values = new String[]{"June","July","August","September","October","Novenber"};
    final String[] quarters = new String[] { "Q1", "Q2", "Q3", "Q4" };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        barChart = (BarChart) findViewById(R.id.bargraph);

        ArrayList<BarEntry> barEntries = new ArrayList<>();
        barEntries.add(new BarEntry(0f,30f));
        barEntries.add(new BarEntry(1f,80f));
        barEntries.add(new BarEntry(2f,60f));
        barEntries.add(new BarEntry(3f,50f));
        barEntries.add(new BarEntry(4f,70f));
        barEntries.add(new BarEntry(5f,60f));
        BarDataSet barDataSet = new BarDataSet(barEntries,"Dates");

        ArrayList<String> theDates = new ArrayList<>();
        theDates.add("April");
        theDates.add("MAy");
        theDates.add("June");
        theDates.add("July");
        theDates.add("August");
        theDates.add("September");

        BarData theData = new BarData(barDataSet);
        theData.setBarWidth(0.9f);
        barChart.setData(theData);

        barChart.setTouchEnabled(true);
        barChart.setDragEnabled(true);
        barChart.setScaleEnabled(true);
        barChart.setFitBars(true);
        barChart.setDescription("Test data on the bar");

        XAxis xAxis = barChart.getXAxis();
        xAxis.setValueFormatter(new MyAxisValueFormatter(values));
        xAxis.setPosition(XAxis.XAxisPosition.BOTTOM);

    }
}

Answer 2

您需要在

下面执行以下代码

horizontalBarChart.notifyDataSetChanged();
        horizontalBarChart.invalidate();

Bardataset = new BarDataSet(BARENTRY1, "Projects");
                BARDATA = new BarData(BarEntryLabels1, Bardataset);
                Bardataset.setColors(new int[]{Color.parseColor("#701112")});
                horizontalBarChart.setData(BARDATA);
                horizontalBarChart.setDrawBarShadow(false);
                horizontalBarChart.setDrawValueAboveBar(true);
                horizontalBarChart.setPinchZoom(false);
                horizontalBarChart.setDrawGridBackground(false);
                horizontalBarChart.setDescription("");
                Bardataset.setBarSpacePercent(10f);
                Legend legend = horizontalBarChart.getLegend();
                legend.setEnabled(false);
                horizontalBarChart.setTouchEnabled(false);
                XAxis xAxis1 = horizontalBarChart.getXAxis();
                xAxis1.setPosition(XAxis.XAxisPosition.BOTTOM);
                xAxis1.setTextSize(8);
                xAxis1.setSpaceBetweenLabels(8);
                xAxis1.setTextColor(Color.parseColor("#701112"));
                xAxis1.setTypeface(tf);
                YAxis leftAxis = barChart.getAxisLeft();
                leftAxis.setEnabled(false);

MPAndroidChart - 如何动态设置BarEntry中的值？

2 个答案: