我目前正在开发一个需要显示图表的应用程序，我选择 IguanaUI 工具集来显示应用程序中的图表:
http://www.infragistics.com/products/android/
现在我在自定义图表本身时遇到一些问题，这是当前成功实现的结果的屏幕截图:
我的问题是:
橙色:如果您看到 Y 轴标签被“切断”并且不显示完整长度。 我想显示完整的标签。 (包括由于某种原因从底部被剪掉的0)
绿色:我想从图表背景中删除黑色 strip 并设置我自己的背景图像。
在 XML 布局文件中将 android:background 设置为图表对象，将背景设置为整个对象(包括轴)，并且不会删除黑条。
我希望图像仅应用于列区域(没有轴)。
更新: 我发现你可以申请:
dataChart.setGridDisplayType(GridDisplayType.NONE);
到DataChart对象，但这也会删除Axis，而不仅仅是内部网格。
UPDATE2:这是我创建图表的ChartFragment:
public class ChartFragment extends Fragment
{
private Tab tab;
private static final String TAG = ChartFragment.class.getSimpleName();
LinearLayout fragmetLayout, llParameterContainer;
private DataChart dataChart;
private List<String> categories;
private List<Float> column1;
private List<Float> column2;
private List<List<Float>> columnList;
TextView tabName;
public ChartFragment(Tab tab)
{
this.tab = tab;
}
/** (non-Javadoc)
* @see android.support.v4.app.Fragment#onCreateView(android.view.LayoutInflater, android.view.ViewGroup, android.os.Bundle)
*/
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
if (container == null) {
// We have different layouts, and in one of them this
// fragment's containing frame doesn't exist. The fragment
// may still be created from its saved state, but there is
// no reason to try to create its view hierarchy because it
// won't be displayed. Note this is not needed -- we could
// just run the code below, where we would create and return
// the view hierarchy; it would just never be used.
return null;
}
fragmetLayout = (LinearLayout)inflater.inflate(R.layout.chart_fragment_layout, container, false);
createData();
createChart();
createUI();
return fragmetLayout;
}
/*
private void createData() {
categories=new ArrayList<String>();
column1=new ArrayList<Float>();
column2=new ArrayList<Float>();
columnList = new ArrayList<List<Float>>();
Random random=new Random();
float value1=25.0f;
float value2=25.0f;
for(int i=0; i<20; ++i) {
value1+=2.0*(random.nextFloat()-0.5f);
value2+=2.0*(random.nextFloat()-0.5f);
categories.add(Integer.toString(i));
column1.add(value1);
column2.add(value2);
}
}
*/
private void createData()
{
categories=new ArrayList<String>();
column1=new ArrayList<Float>();
column2=new ArrayList<Float>();
columnList = new ArrayList<List<Float>>();
for (int i=0; i < tab.getChart().getChartMeasuresList().size(); i++)
{
//categories.add(Integer.toString(i)); //the x axis.
Measure tempMeasure = tab.getChart().getChartMeasuresList().get(i);
final int measureDataSize = tempMeasure.getMeasureData().size();
Log.d(TAG, "current tempMeasure: " + tempMeasure.getMeasureData().toString() + " with: "+ measureDataSize + " measure data items." );
for (int j=0; j < measureDataSize; j++)
{
if (i == 0)
{
categories.add(tempMeasure.getMeasureData().get(j).getLabel());
}
column1.add(Float.valueOf(tempMeasure.getMeasureData().get(j).getValue())); //column data
Log.d(TAG, "add value " + tempMeasure.getMeasureData().get(j).getValue() + " at label/category: "+ tempMeasure.getMeasureData().get(j).getLabel());
//column2.add(value2); //column2 data
}
columnList.add(column1);
column1=new ArrayList<Float>();
}
}
private void updateData() {
/*
Random random=new Random();
float value1=25.0f;
float value2=25.0f;
for(int i=0; i<categories.size(); ++i) {
value1+=2.0*(random.nextFloat()-0.5f);
value2+=2.0*(random.nextFloat()-0.5f);
column1.set(i, value1);
column2.set(i, value2);
}
*/
}
private void createChart() {
dataChart=(DataChart) fragmetLayout.findViewById(R.id.dataChart); // get the empty chart view from the activity layout
dataChart.setHorizontalZoomEnabled(true); // allow horizontal zooming
dataChart.setVerticalZoomEnabled(false); // don't allow vertical zooming
dataChart.setGridDisplayType(GridDisplayType.BACK);
dataChart.setBackgroundColor(getResources().getColor(R.color.light_gray));
// set up an x axis
CategoryXAxis categoryAxis=new CategoryXAxis();
categoryAxis.setVisibility(View.VISIBLE);
categoryAxis.setDataSource(categories); // tell the axis about the data table
Brush brush = categoryAxis.getLabelBrush();
categoryAxis.setLabelTextSize(20);
brush.setColor(Color.BLACK);
categoryAxis.setGap(1.0f);
categoryAxis.setLabelBrush(brush);
categoryAxis.setLabelFormatter(new CategoryAxis.LabelFormatter() {
public String format(CategoryAxis axis, Object item) {
return (String)item; // return the axis item as a string
}
});
//categoryAxis.setBrushes(Color.BLACK);
dataChart.scales().add(categoryAxis); // all axes must be added to the chart's scales collection
// set up a y axis
NumericYAxis valueAxis=new NumericYAxis();
valueAxis.setLabelTextSize(15);
valueAxis.labelAreaRect.set(30, 30, 30, 30);
valueAxis.setVisibility(View.VISIBLE);
Brush brush2 = valueAxis.getLabelBrush();
brush2.setColor(Color.BLACK);
valueAxis.setLabelBrush(brush2);
valueAxis.setMinimumValue(-10.0f);
// valueAxis.setMaximumValue(110.0f);
//valueAxis.setMinimumValue(0.0f); // the random data look much nicer with a fixed axis range
//valueAxis.setMaximumValue(50.0f); // the random data look much nicer with a fixed axis range
valueAxis.setLabelFormatter(new NumericAxis.LabelFormatter() {
public String format(NumericAxis axis, float item, int precision) {
if(precision!=numberFormat.getMinimumFractionDigits()) {
numberFormat.setMinimumFractionDigits(precision); // set the formatting precision
numberFormat.setMaximumFractionDigits(precision); // set the formatting precision
}
return numberFormat.format(item); // return item as a string
}
final NumberFormat numberFormat=NumberFormat.getInstance(); // numeric formatter for axis values
});
dataChart.scales().add(valueAxis); // all axes must be added to the chart's scales collection
for (int i=0; i < columnList.size(); i++)
{
ValueCategorySeries series=new ColumnSeries();
series.setCategoryAxis(categoryAxis); // tell the series its x axis
series.setValueAxis(valueAxis); // tell the series its y axis
series.setValueMember(""); // tell the series the data rows are the values
Log.d(TAG, "setting serias_"+i+": "+columnList.get(i).toString());
series.setDataSource(columnList.get(i)); // tell the series the data table
dataChart.series().add(series); // add the series to the chart
}
/*
{
ValueCategorySeries series=new ColumnSeries();
series.setCategoryAxis(categoryAxis); // tell the series its x axis
series.setValueAxis(valueAxis); // tell the series its y axis
series.setValueMember(""); // tell the series the data rows are the values
series.setDataSource(column1); // tell the series the data table
dataChart.series().add(series); // add the series to the chart
}
{
ValueCategorySeries series=new ColumnSeries();
series.setCategoryAxis(categoryAxis); // tell the series its x axis
series.setValueAxis(valueAxis); // tell the series its y axis
series.setValueMember(""); // tell the series the data rows are the values
series.setDataSource(column2); // tell the series the data table
dataChart.series().add(series); // add the series to the chart
}
*/
}
private void createUI() {
Button updateButton=(Button) fragmetLayout.findViewById(R.id.updateButton);
updateButton.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
updateData();
for(Series series: dataChart.series()) {
series.notifyDataReset();
}
}
});
Button overlapButton=(Button) fragmetLayout.findViewById(R.id.overlapButton);
overlapButton.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
CategoryXAxis categoryAxis=(CategoryXAxis)dataChart.scales().get(0);
categoryAxis.setOverlap(2.0f*new Random().nextFloat()-1.0f);
}
});
Button gapButton=(Button) fragmetLayout.findViewById(R.id.gapButton);
gapButton.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
CategoryXAxis categoryAxis=(CategoryXAxis)dataChart.scales().get(0);
categoryAxis.setGap(new Random().nextFloat());
}
});
}
}
有人有使用这个工具的经验吗？ 我整天都在查看他们的文档以了解如何执行这些任务，但到目前为止还没有结果。
如有任何帮助，我们将不胜感激。谢谢。
最佳答案
在当前发布的 IguanaUI 版本中，删除网格的最佳选择是使用空或透明的纯色画笔调用 setMinorBrush()、setMajorBrush() 和 setStripBrush()。
对于被裁剪的垂直轴标签，您可以增加轴的大小来处理标签左侧或右侧被裁剪的情况。目前还没有办法解决垂直轴顶部和底部的裁剪问题。
关于android - 需要自定义 Iguana UI 工具集的帮助 :，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/15600549/