achartengine内存泄露
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_oxy_chat);
back = (RelativeLayout) findViewById(R.id.activity_oxy_chat_back);
chatLayout = (LinearLayout) findViewById(R.id.oxy_chat);
back.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
startActivity(new Intent(OxyLineChatActivity.this,
DeviceOptActivity.class));
finish();
}
});
initView();
// chatLayout.setLayoutParams(new
// LayoutParams(LayoutParams.MATCH_PARENT,
// // LayoutParams.MATCH_PARENT));
// chatLayout.addView(view, new LayoutParams(LayoutParams.MATCH_PARENT,
// LayoutParams.MATCH_PARENT));
}
@Override
protected void onResume() {
super.onResume();
if (view == null) {
view = ChartFactory.getLineChartView(this,_
buildDataset(titles, x, values), renderer);
view.setBackgroundColor(Color.WHITE);
// enable the chart click events
chatLayout.addView(view, new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.FILL_PARENT));
} else {
((GraphicalView) view).repaint();
}
}
public void initView() {
titles = new String[] { "Crete", "Corfu", "Thassos", "Skiathos" };
x = new ArrayList<double[]>();
for (int i = 0; i < titles.length; i++) {
x.add(new double[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 });
}
values = new ArrayList<double[]>();
values.add(new double[] { 12.3, 12.5, 13.8, 16.8, 20.4, 24.4, 26.4,
26.1, 23.6, 20.3, 17.2, 13.9 });
values.add(new double[] { 10, 10, 12, 15, 20, 24, 26, 26, 23, 18, 14,
11 });
values.add(new double[] { 5, 5.3, 8, 12, 17, 22, 24.2, 24, 19, 15, 9, 6 });
values.add(new double[] { 9, 10, 11, 15, 19, 23, 26, 25, 22, 18, 13, 10 });
// 鐐圭殑鏍峰紡
int[] colors = new int[] { Color.BLUE, Color.GREEN, Color.CYAN,
Color.YELLOW };
PointStyle[] styles = new PointStyle[] { PointStyle.CIRCLE,
PointStyle.DIAMOND, PointStyle.TRIANGLE, PointStyle.SQUARE };
renderer = buildRenderer(colors, styles);
int length = renderer.getSeriesRendererCount();
// 鐐规槸绌哄績杩樻槸瀹炲績
for (int i = 0; i < length; i++) {
((XYSeriesRenderer) renderer.getSeriesRendererAt(i))
.setFillPoints(true);
}
setChartSettings(renderer, "Average temperature", "Month",
"Temperature", 0.5, 12.5, -10, 40, Color.LTGRAY, Color.LTGRAY);
// 杞翠笂鏁板瓧鐨勬暟閲?
renderer.setXLabels(12);
renderer.setYLabels(10);
// 鏄惁鏄剧ず缃戞牸
renderer.setShowGrid(true);
// x鎴杫杞翠笂鏁板瓧鐨勬柟鍚戯紝鐩稿弽鐨勩??
renderer.setXLabelsAlign(Align.RIGHT);
renderer.setYLabelsAlign(Align.RIGHT);
// 缂╂斁鏁堟灉
renderer.setZoomButtonsVisible(true);
renderer.setPanLimits(new double[] { -10, 20, -10, 40 });
renderer.setZoomLimits(new double[] { -10, 20, -10, 40 });
// 鍥捐〃閮ㄥ垎鐨勮儗鏅鑹?
// renderer.setApplyBackgroundColor(true);// 璁剧疆鏄惁鏄剧ず鑳屾櫙鑹?
// renderer.setBackgroundColor(Color.WHITE);
// renderer.setBackgroundColor(Color.parseColor("#ffffff"));
// renderer.setApplyBackgroundColor(true);
// 鍥捐〃涓庡睆骞曞洓杈圭殑闂磋窛棰滆壊
renderer.setMarginsColor(Color.WHITE);
}
private XYMultipleSeriesRenderer buildRenderer(int[] colors,
PointStyle[] styles) {
XYMultipleSeriesRenderer renderer = new XYMultipleSeriesRenderer();
setRenderer(renderer, colors, styles);
return renderer;
}
private void setRenderer(XYMultipleSeriesRenderer renderer, int[] colors,
PointStyle[] styles) {
renderer.setAxisTitleTextSize(16);
renderer.setChartTitleTextSize(20);
renderer.setLabelsTextSize(15);
renderer.setLegendTextSize(15);
renderer.setPointSize(5f);
renderer.setMargins(new int[] { 20, 30, 15, 20 });
int length = colors.length;
for (int i = 0; i < length; i++) {
XYSeriesRenderer r = new XYSeriesRenderer();
r.setColor(colors[i]);
r.setPointStyle(styles[i]);
renderer.addSeriesRenderer(r);
}
}
private 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);
}
private XYMultipleSeriesDataset buildDataset(String[] titles,
List<double[]> xValues, List<double[]> yValues) {
XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset();
addXYSeries(dataset, titles, xValues, yValues, 0);
return dataset;
}
private void addXYSeries(XYMultipleSeriesDataset dataset, String[] titles,
List<double[]> xValues, List<double[]> yValues, int scale) {
int length = titles.length;
for (int i = 0; i < length; i++) {
XYSeries series = new XYSeries(titles[i], scale);
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);
}
}
@Override
protected void onDestroy() {
super.onDestroy();
if (view != null) {
chatLayout.removeView(view);
view = null;
}
}
}
