【发布时间】：2014-03-20 13:36:15
【问题描述】：
我有这个代码
public class BarChartBuilder extends SherlockFragment implements Serializable {
@InjectView(R.id.chart)
LinearLayout chartContainer;
private XYMultipleSeriesDataset ChartDataSeries;
private XYMultipleSeriesRenderer DataRenderer = new XYMultipleSeriesRenderer();
private GraphicalView ChartView;
public Chart chart;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
View parent = inflater.inflate(R.layout.xy_chart, null);
ButterKnife.inject(this, parent);
String[] titles = chart.categories.toArray(new String[0]);
List<double[]> values = new ArrayList<double[]>();
DataRenderer = buildBarRenderer(chart.values.size());
DataRenderer.setLabelsColor(Color.BLACK);
DataRenderer.setLabelsTextSize(18);
DataRenderer.setChartTitleTextSize(12);
DataRenderer.setAxisTitleTextSize(18);
DataRenderer.setBarWidth(18);
DataRenderer.setXLabelsAlign(Paint.Align.CENTER);
DataRenderer.setXLabels(0);
DataRenderer.setYLabels(0);
DataRenderer.setOrientation(XYMultipleSeriesRenderer.Orientation.HORIZONTAL);
double max = getMaxValue();
setChartSettings(DataRenderer, "", chart.metadata.xAxis.labels.get(0),
chart.metadata.yAxis.labels.get(0),
0.0, chart.values.size() + 2,
0.0, max + Math.round(max / 2),
Color.GRAY, Color.LTGRAY);
DataRenderer.setShowLegend(false);
DataRenderer.setPanEnabled(true, false);
int length = DataRenderer.getSeriesRendererCount();
for (int i = 0; i < length; i++) {
XYSeriesRenderer seriesRenderer = (XYSeriesRenderer) DataRenderer.getSeriesRendererAt(i);
seriesRenderer.setDisplayChartValues(true);
}
for (Double value : chart.values) {
values.add(new double[]{value});
}
ChartDataSeries = buildBarDataSet(titles, values);
prepareChartView();
ChartView.repaint();
ChartView.toString();
return parent;
}
private double getMaxValue() {
double max = 0;
for (Double d : chart.values) {
if (d > max) {
max = d;
}
}
return max;
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putSerializable("current_series", ChartDataSeries);
outState.putSerializable("current_renderer", DataRenderer);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
if (savedInstanceState != null) {
// ChartDataSeries = (CategorySeries) savedInstanceState.getSerializable("current_series");
// DataRenderer = (DefaultRenderer) savedInstanceState.getSerializable("current_renderer");
}
}
@Override
public void onResume() {
super.onResume();
if (ChartView == null) {
prepareChartView();
} else {
ChartView.repaint();
}
}
private void prepareChartView() {
ChartView = ChartFactory.getBarChartView(getActivity(), ChartDataSeries, DataRenderer, BarChart.Type.DEFAULT);
DataRenderer.setClickEnabled(true);
ChartView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
SeriesSelection seriesSelection = ChartView.getCurrentSeriesAndPoint();
if (seriesSelection == null) {
Toast.makeText(getActivity(), "No chart element selected", Toast.LENGTH_SHORT)
.show();
} else {
/* for (int i = 0; i < ChartDataSeries.getItemCount(); i++) {
DataRenderer.getSeriesRendererAt(i).setHighlighted(i == seriesSelection.getPointIndex());
}*/
ChartView.repaint();
Toast.makeText(
getActivity(),
"Chart data point index " + seriesSelection.getPointIndex() + " selected"
+ " point value=" + seriesSelection.getValue(), Toast.LENGTH_SHORT).show();
}
}
});
chartContainer.addView(ChartView, new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.MATCH_PARENT));
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
menu.clear();
MenuInflater menuInflater = getSherlockActivity().getSupportMenuInflater();
menuInflater.inflate(R.menu.user_profile, menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
return super.onOptionsItemSelected(item);
}
protected XYMultipleSeriesDataset buildBarDataSet(String[] titles, List<double[]> values) {
XYMultipleSeriesDataset dataSet = new XYMultipleSeriesDataset();
int length = titles.length;
for (int i = 0; i < length; i++) {
DataRenderer.addXTextLabel(i + 1, titles[i]);
XYSeries series = new XYSeries("");
double[] v = values.get(i);
int seriesLength = v.length;
for (int k = 0; k < seriesLength; k++) {
series.add((i + 1), v[k]);
}
dataSet.addSeries(series);
}
return dataSet;
}
protected XYMultipleSeriesRenderer buildBarRenderer(int size) {
int[] colors = new int[]{Color.GREEN, Color.BLUE, Color.MAGENTA, Color.CYAN, Color.GRAY, Color.YELLOW, Color.RED};
XYMultipleSeriesRenderer renderer = new XYMultipleSeriesRenderer();
for (int i = 0; i < size; i++) {
XYSeriesRenderer r = new XYSeriesRenderer();
r.setColor(colors[i % colors.length]);
r.setChartValuesTextSize(24);
r.setChartValuesTextAlign(Paint.Align.CENTER);
renderer.addSeriesRenderer(r);
}
return renderer;
}
protected void setChartSettings(XYMultipleSeriesRenderer renderer, String title, String xTitle,
String yTitle, double xMin, double xMax, double yMin, double yMax, int axesColor,
int labelsColor) {
renderer.setChartTitle(title);
renderer.setXTitle(xTitle);
renderer.setYTitle(yTitle);
renderer.setXAxisMin(xMin);
renderer.setXAxisMax(xMax);
renderer.setYAxisMin(yMin);
renderer.setYAxisMax(yMax);
renderer.setAxesColor(axesColor);
renderer.setLabelsColor(labelsColor);
}
}
我认为问题出在这部分
DataRenderer.addXTextLabel(i + 1, titles[i]);
XYSeries series = new XYSeries("");
double[] v = values.get(i);
int seriesLength = v.length;
for (int k = 0; k < seriesLength; k++) {
series.add((i + 1), v[k]);
}
但是我使用 i+1 作为标签和列的 x 部分，为什么标签在它们的列下没有正确对齐？
【问题讨论】：
-
注意第3项是正确的
-
为什么要使用多个 XYSeriesRenderer ？你的要求是什么？
-
我的要求是制作一个如上图所示的条形图，我将接收数据作为标签值对，我想将其显示为上图。
标签： android bar-chart achartengine