我正在开发一个安卓应用程序，并使用AChartEngine作为图表库。我希望在绘制条形图时，它会慢慢绘制，这样它就会给我们一种外观和感觉，它是用某种动画绘制的。如何实施这种行为？
values.add(0, InCycleDuration);
values.add(1, UnknownDowntimeDuration);
int[] colors = new int[EqSDLenght] ;
colors[0] = Color.parseColor("#008000");
colors[1] = Color.parseColor("#FFFF00");
for(int j = EqSDLenght - 1 ; j >= 0;j--)
{
if(EquipmentRKey[j].equals("EquipmentStatusTypeName.UnknownDowntime"))
{
titles [j] = "Unknown Downtime" ;
}
if(EquipmentRKey[j].equals("EquipmentStatusTypeName.InCycle"))
{
titles [j] = "In Cycle" ;
}
}
renderer = buildBarRenderer(colors);
setChartSettings(renderer, "Comparison Chart", "", "Total Time Consumed", 0,
6, 0, 100, Color.DKGRAY, Color.DKGRAY);
for(int i=0 ; i < titles.length; i++)
{
x.add(new double[]{ 1,2,3,4,5});
}
for(int i=0;i<name.length;i++)
{
renderer.addTextLabel(i+1, name[i]);
}
renderer.setXLabels(0);
renderer.setLabelsTextSize(12);
renderer.getSeriesRendererAt(0).setDisplayChartValues(false);
renderer.getSeriesRendererAt(1).setDisplayChartValues(false);
renderer.setShowGridX(true);
renderer.setGridColor(Color.parseColor("#359ACD32"));
final int orientation = this.getResources().getConfiguration().orientation;
if (orientation == Configuration.ORIENTATION_PORTRAIT)
{
renderer.setYLabels(11);
}
if (orientation == Configuration.ORIENTATION_LANDSCAPE)
{
renderer.setYLabels(6);
}
renderer.setXLabelsAlign(Align.CENTER);
renderer.setYLabelsAlign(Align.CENTER);
renderer.setXLabelsColor(Color.DKGRAY);
renderer.setYLabelsColor(0, Color.DKGRAY);
renderer.setPanEnabled(false, false);
renderer.setZoomRate(1.1f);
renderer.setBarSpacing(0.8f);
renderer.setMargins( new int []{55, 40, 35, 30});
renderer.setApplyBackgroundColor(true);
renderer.setBackgroundColor(Color.WHITE);
renderer.setMarginsColor(Color.WHITE);
renderer.setLegendHeight(40);
renderer.setChartTitleTextSize(30);
renderer.getXTextLabelLocations();
renderer.setClickEnabled(true);
mChartView = ChartFactory.getBarChartView(SalesBar.this, buildBarDataset(titles, values), renderer,
org.achartengine.chart.BarChart.Type.STACKED);
layout.addView(mChartView, LayoutParams.FILL_PARENT , LayoutParams.FILL_PARENT);
renderer.setSelectableBuffer(100);
mChartView.setOnTouchListener(new OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
if (MotionEvent.ACTION_DOWN == event.getAction()) {
xaxis = event.getRawX();
yaxis = event.getRawY();
xx = (int) xaxis;
yy = (int) yaxis;
} else if (MotionEvent.ACTION_UP == event.getAction()) {
xaxis = event.getX();
yaxis = event.getY();
xx = (int) xaxis;
yy = (int) yaxis;
}
else{}
return false;
}
});
mChartView.setOnClickListener(new View.OnClickListener() {
Toast test;
public void onClick(View v) {
SeriesSelection seriesSelection = mChartView.getCurrentSeriesAndPoint();
if (seriesSelection != null) {
int status_index = seriesSelection.getSeriesIndex();
int equipment_index = seriesSelection.getPointIndex();
double duration_value = seriesSelection.getValue();
if(status_index == 0)
{
if(equipment_index == 0)
{
duration_value = EquipmentHoursDuration[0][1];
}
if(equipment_index == 1)
{
duration_value = EquipmentHoursDuration[1][1];
}
if(equipment_index == 2)
{
duration_value = EquipmentHoursDuration[2][1];
}
if(equipment_index == 3)
{
duration_value = EquipmentHoursDuration[3][1];
}
if(equipment_index == 4)
{
duration_value = EquipmentHoursDuration[4][1];
}
String final_status = titles[status_index];
String final_equipment = EquipmentNamePartial[equipment_index];
test = Toast.makeText(
SalesBar.this,
"Status: " + final_status + 'n'
+ "Equipment: " + final_equipment + 'n'
+ "Duration: " + duration_value + " hours", Toast.LENGTH_SHORT);
((TextView)((LinearLayout)test.getView()).getChildAt(0))
.setGravity(Gravity.LEFT);
test.setGravity(Gravity.TOP|Gravity.LEFT, xx, yy);
test.show();
}
else
{
String final_status = titles[status_index];
String final_equipment = EquipmentNamePartial[equipment_index];
if(equipment_index == 0)
{
duration_value = EquipmentHoursDuration[0][0];
}
if(equipment_index == 1)
{
duration_value = EquipmentHoursDuration[1][0];
}
if(equipment_index == 2)
{
duration_value = EquipmentHoursDuration[2][0];
}
if(equipment_index == 3)
{
duration_value = EquipmentHoursDuration[3][0];
}
if(equipment_index == 4)
{
duration_value = EquipmentHoursDuration[4][0];
}
test = Toast.makeText(
SalesBar.this,
"Status: " + final_status + 'n'
+ "Equipment: " + final_equipment + 'n'
+ "Duration: " + duration_value + " hours", Toast.LENGTH_SHORT);
test.setGravity(Gravity.TOP|Gravity.LEFT, xx, yy);
((TextView)((LinearLayout)test.getView()).getChildAt(0))
.setGravity(Gravity.LEFT);
test.show();
}
}
}
});
protected XYMultipleSeriesRenderer buildBarRenderer(int[] colors) {
XYMultipleSeriesRenderer renderer = new XYMultipleSeriesRenderer();
renderer.setAxisTitleTextSize(16);
renderer.setChartTitleTextSize(20);
renderer.setLabelsTextSize(15);
renderer.setLegendTextSize(15);
int length = colors.length;
for (int i = 0; i < length; i++) {
SimpleSeriesRenderer r = new SimpleSeriesRenderer();
r.setColor(colors[i]);
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);
}
protected XYMultipleSeriesDataset buildBarDataset(String[] titles, List<double[]> values) {
XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset();
int length = titles.length;
for (int i = 0; i < length; i++) {
CategorySeries series = new CategorySeries(titles[i]);
double[] v = values.get(i);
int seriesLength = v.length;
for (int k = 0; k < seriesLength; k++) {
series.add(v[k]);
}
dataset.addSeries(series.toXYSeries());
}
return dataset;
}
}
您可以使用某些值显示初始视图，然后逐渐更改这些值，直到它们达到结束值。在此期间，您将使用新值修改数据集，并在单独的线程中调用mChartView.repaint()，该线程确实会休眠 100 毫秒左右。
它应该像以下那样简单：
new Thread(new Runnable() {
public void run() {
while (!stopped) {
try {
Thread.sleep(100);
} catch (Exception e) {
// ignore
}
// modify the contents of your series here
...
mChartView.repaint();
}
}
}).start();