我在AChartEngine中显示组合图表时遇到问题 有两种类型的图表组合在一起：线条和条形图 第一个问题是线的起点不是从x轴的0开始 我希望它从x = 0开始，到最右边结束 第二个问题是每个条形图顶部的标签不居中。
这是我的代码：
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.layout_main);
GraphicalView view = createIntent();
LinearLayout layout = (LinearLayout) findViewById(R.id.graph);
layout.addView(view);
}
public GraphicalView createIntent() {
String[] titles = new String[] {"Benchmark line"};
//List<double []> values = new ArrayList<double []>(); //as y1
//values.add(new double[] {20.0, 10.0, 30.0, 25.0, 40.0});
double[] y1 = new double[] {20.0, 10.0, 30.0, 25.0, 40.0};
List<double[]> x = new ArrayList<double[]>();
for(int i=0; i<titles.length ; i++) {
x.add(new double[] {1,2,3,4,5});
}
/*****************************************/
List<double []> lineValues = new ArrayList<double []>(); //as values
lineValues.add(new double[] {20, 20, 20, 20, 20});
int[] colors = new int[] {Color.parseColor("#ea2e49")}; //pink
XYMultipleSeriesRenderer mRenderer = buildBarRenderer(colors);
mRenderer.setPointSize(0);
int length = mRenderer.getSeriesRendererCount();
for(int i=0 ; i<length ; i++){
XYSeriesRenderer seriesRenderer = (XYSeriesRenderer) mRenderer.getSeriesRendererAt(i);
seriesRenderer.setDisplayChartValues(false);
seriesRenderer.setLineWidth(5);
seriesRenderer.setFillPoints(true);
}
mRenderer.setOrientation(Orientation.HORIZONTAL);
setChartSettings(mRenderer, "Average Customer Waiting Time", "Table Categories", "Minutes", 0, 6, 0, 120, Color.BLACK, Color.BLACK);
mRenderer.setXLabels(0);
mRenderer.setYLabels(10);
mRenderer.setShowGrid(true);
mRenderer.addXTextLabel(1, "1 SEAT");
mRenderer.addXTextLabel(2, "2 SEATS");
mRenderer.addXTextLabel(3, "4 SEATS");
mRenderer.addXTextLabel(4, "6 SEATS");
mRenderer.addXTextLabel(5, "8 SEATS");
mRenderer.setXLabelsAlign(Align.CENTER);
mRenderer.setYLabelsAlign(Align.RIGHT);
XYSeries ySeries = new XYSeries("Average Customer Waiting Time");
ySeries.add(1, y1[0]);
ySeries.add(2, y1[1]);
ySeries.add(3, y1[2]);
ySeries.add(4, y1[3]);
ySeries.add(5, y1[4]);
mRenderer.setBarSpacing(0.5);
XYSeriesRenderer yRenderer = new XYSeriesRenderer();
yRenderer.setColor(Color.parseColor("#77c4d3")); //light blue
XYMultipleSeriesDataset dataset = buildBarDataset(titles, x, lineValues);
dataset.addSeries(0,ySeries);
mRenderer.addSeriesRenderer(0, yRenderer);
yRenderer.setDisplayChartValues(true);
yRenderer.setChartValuesTextSize(20); //text size on each bar
String[] types = new String[] {BarChart.TYPE , LineChart.TYPE};
final GraphicalView grfv = ChartFactory.getCombinedXYChartView(this, dataset, mRenderer, types);
return grfv;
}
protected XYMultipleSeriesRenderer buildBarRenderer(int[] colors) {
XYMultipleSeriesRenderer mRenderer = new XYMultipleSeriesRenderer();
PointStyle[] styles = new PointStyle[] {PointStyle.CIRCLE};
mRenderer.setAxisTitleTextSize(17);
mRenderer.setChartTitleTextSize(25);
mRenderer.setLabelsTextSize(15);
mRenderer.setLegendTextSize(15);
mRenderer.setBarSpacing(1);
mRenderer.setPointSize(5f);
mRenderer.setMarginsColor(Color.parseColor("#EEEDED"));
mRenderer.setXLabelsColor(Color.BLACK);
mRenderer.setYLabelsColor(0,Color.BLACK);
mRenderer.setApplyBackgroundColor(true);
mRenderer.setBackgroundColor(Color.parseColor("#FBFBFC"));
int length = colors.length;
for (int i = 0; i < length; i++) { //build benchmark line
XYSeriesRenderer r = new XYSeriesRenderer(); //change
r.setColor(colors[i]);
r.setPointStyle(styles[i]);
mRenderer.addSeriesRenderer(r);
}
return mRenderer;
}
protected void setChartSettings(XYMultipleSeriesRenderer mRenderer, String title, String xTitle, String yTitle, double xMin, double xMax, double yMin, double yMax, int axesColor, int labelsColor) {
mRenderer.setChartTitle(title);
mRenderer.setYLabelsAlign(Align.RIGHT);
mRenderer.setXTitle(xTitle);
mRenderer.setYTitle(yTitle);
mRenderer.setXAxisMin(xMin);
mRenderer.setXAxisMax(xMax);
mRenderer.setYAxisMin(yMin);
mRenderer.setYAxisMax(yMax);
mRenderer.setMargins(new int[] {10, 65, 10, 15});
mRenderer.setAxesColor(axesColor);
mRenderer.setLabelsColor(labelsColor);
//mRenderer.setZoomEnabled(false);
mRenderer.setPanEnabled(false, false);
mRenderer.setZoomEnabled(false, false);
}
protected XYMultipleSeriesDataset buildBarDataset(String[] titles, List<double []> xValues, List<double []> yValues) {
XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset();
int length = titles.length;
for(int i=0 ; i<length ; i++) {
XYSeries series = new XYSeries(titles[i],0);
double[] xV = xValues.get(i);
double[] yV = yValues.get(i);
int seriesLength = xV.length;
for(int k=0 ; k<seriesLength ; k++) {
series.add(xV[k],yV[k]);
}
dataset.addSeries(series);
}
return dataset;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
答案 0 :(得分：1)
更改：
x.add(new double[] {1,2,3,4,5})来：x.add(new double[] {0,1,2,3,4,5,6,7})
和
lineValues.add(new double[] {20, 20, 20, 20, 20})来：lineValues.add(new double[] {20, 20, 20, 20, 20,20,20,20})