Question

我正在尝试将轴标题添加到使用mpandroid图表库创建的条形图中。我在我的活动中使用了多个片段，条形图是一个片段。我正在动态添加数据，一切正常。我想在x和y轴上添加标题，当我搜索时，我发现它不受库支持。他们建议我们在图表中添加textview或编辑库。

我知道这个问题与这篇文章相同，但他们没有答案。 How to add String Label to MPAndroidCharts

我尝试添加一个textview进行查看，并将其添加到图表的顶部。我尝试过给layout_gravity，但它没有用。如何将textview添加到视图的底部。我也需要添加y轴标题。我也尝试添加到容器和视图。

    public class BarChartFragment extends Fragment {

        ScreenUtility screenUtility;
        BarChart bar;
        String nameOfChart,xAxisDesciption,yAxisDescription;
        TextView xAxisName;


        public BarChartFragment() {
            // Required empty public constructor
        }

        @Override
        public void onCreate(Bundle savedInstanceState) {
            //this.setRetainInstance(true);
            super.onCreate(savedInstanceState);
            if (getArguments() != null) {

            }
        }
        public View getView(){
            return bar.getRootView();
        }

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                 Bundle savedInstanceState) {

            screenUtility = new ScreenUtility(getActivity());


            ArrayList<BarEntry> entries = new ArrayList<>();

            BarDataSet dataSet = new BarDataSet(entries,nameOfChart);
            dataSet.setColors(getColors());
            dataSet.setStackLabels(new String[]{"CU1", "CU2"});
            dataSet.setValueFormatter(new MyValueFormatter());

            ArrayList<String> labels = new ArrayList<String>();

            ArrayList<BarDataSet> dataSets = new ArrayList<BarDataSet>();
            dataSets.add(dataSet);

            bar = new BarChart(getActivity());

            BarData data = new BarData(labels,dataSets);
            bar.setData(data);

            bar.setDrawValuesForWholeStack(true);
            bar.setDrawBarShadow(false);
            bar.setDrawValueAboveBar(false);

            bar.setHighlightEnabled(false);
            bar.setDrawGridBackground(false);
            bar.setDescription("");

            XAxis x = bar.getXAxis();
            x.setDrawGridLines(false);
            x.setPosition(XAxis.XAxisPosition.BOTTOM);

            YAxis yLabels = bar.getAxisLeft();
            yLabels.setDrawGridLines(false);
            YAxis yLabels1 = bar.getAxisRight();
            yLabels1.setEnabled(false);

            Legend legend = bar.getLegend();
            legend.setPosition(Legend.LegendPosition.BELOW_CHART_RIGHT);

            bar.animateY(2000);

            int layoutHeight = screenUtility.getWidth() > screenUtility.getHeight() ? (int) screenUtility.getHeight() : (int) screenUtility.getWidth();
            if(screenUtility.getHeight()>screenUtility.getWidth()) {
                ViewGroup.LayoutParams params = new ViewGroup.LayoutParams((int) screenUtility.getWidth() - 20, layoutHeight);
                bar.getRootView().setLayoutParams(new ViewGroup.LayoutParams(params));
            }else{
                ViewGroup.LayoutParams params = new ViewGroup.LayoutParams((int) (screenUtility.getWidth()/2) - 20, layoutHeight);
                bar.getRootView().setLayoutParams(new ViewGroup.LayoutParams(params));
            }

            bar.setNoDataText("No Data is Available");

//Tried adding Textview Here
            xAxisName = new TextView(getActivity());
            xAxisName.setText("Date");
            xAxisName.setGravity(Gravity.BOTTOM);
            container.addView(xAxisName);
            return bar.getRootView();
    }

enter image description here

我无法将textview添加到活动中，因为所有内容都是动态添加的，因此我必须将textview添加到每个图表中。如何解决这个问题并将其置于图表的底部。

Answer 1

我找到了解决方案，我会将其发布以供其他人参考。我从以下链接找到了垂直文本视图。

Vertical (rotated) label in Android

        xAxisName = new TextView(getActivity());
        xAxisName.setText("Date");
        FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(FrameLayout.LayoutParams.WRAP_CONTENT, FrameLayout.LayoutParams.WRAP_CONTENT);
        params.gravity = Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM;
        params.setMargins(0, 0, 0, 20);

        VerticalTextView yAxisName = new VerticalTextView(getActivity(),null);
        yAxisName.setText("Yaxis Label");
        FrameLayout.LayoutParams params2 = new FrameLayout.LayoutParams(FrameLayout.LayoutParams.WRAP_CONTENT, FrameLayout.LayoutParams.WRAP_CONTENT);
        params2.gravity = Gravity.RIGHT | Gravity.CENTER_VERTICAL;

        container.addView(xAxisName, params);
        container.addView(yAxisName,params2);

Answer 2

我建议您（在图表外使用其他文本视图）或根据您的目的修改库。

默认情况下目前不支持。

Answer 3

setSpaceTop {{1}}有一种简单的方法，设置TextView之间的边距

Answer 4

您可以使用 IndexAxisValueFormatter 这样的代码

final ArrayList<String> axiss = new ArrayList<>();
    axiss.add("one");
    axiss.add("two");
    axiss.add("three");
    axiss.add("four");
    axiss.add("five");

    XAxis xAxis = chart.getXAxis();
    xAxis.setPosition(XAxis.XAxisPosition.BOTTOM_INSIDE);
    xAxis.setDrawLabels(true);
    xAxis.setGranularity(1f);
    xAxis.setLabelRotationAngle(+90);

    xAxis.setValueFormatter(new IndexAxisValueFormatter(axiss));

将Axis标题添加到mpandroidchart

4 个答案: