本文介绍了Achartengine重绘的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我在webservice的一个数据连接。在Assynctask我得到的数据，每5秒。
数据赶到后我做出新的数据集，并becuse的mChartView生活我只是重绘。在这里，我正在添加的问题。折线图重绘不能再生图表只是做最后的一个新的顶部。 2-3分钟后取出menmory的课程：（
I have one data connection in webservice. In Assynctask i get data every 5 second.After the data arrived i make new dataset and becuse the mChartView living i just repaint. And here comming my problem. The Line chart repaint not regenerate the chart just make one new top of the last. And of course 2-3 minutes out of menmory :(
下面我code：
class GetData extends AsyncTask<Void, String, Void> {
private ArrayList<String> Alldata = new ArrayList<String>();
public XYMultipleSeriesDataset datasetOut;
public XYMultipleSeriesRenderer mRendererOut;
@Override
protected Void doInBackground(Void... unused) {
Alldata.clear();
Alldata = DataFromWeb.getChartDataNew("&name=XXX", "XXX");
return (null);
}
@Override
protected void onPostExecute(Void unused) {
datasetOut = CCChart.getDataSet(getBaseContext(), Alldata);
mRendererOut = CCChart.getRendererPortrait(getBaseContext());
Log.d("Debug", "alldatasize: " + Alldata.size());
Log.d("Debug", "dataset " + datasetOut.getSeriesCount() );
if (mChartView != null) {
mChartView.repaint();
Log.v("CC_trace", "CCChartRepaint");
} else {
mChartView = ChartFactory.getLineChartView(getBaseContext(), datasetOut , mRendererOut);
layout.addView(mChartView, new LayoutParams(
LayoutParams.WRAP_CONTENT, getHeight()));
Log.v("CC_trace", "CCChartGenerate");
}
}
}
也许我不是好地方调用重绘（））
MAybe im not call in good place the repaint() :)
图表图像
THX的帮助...
thx the help...
推荐答案
在我的我从来没有叫重绘。我只是重建旧
In mine I never call repaint. I just recreate the old one
所以像这样的：
@Override
protected void onPostExecute(Void unused) {
datasetOut = CCChart.getDataSet(getBaseContext(), Alldata);
mRendererOut = CCChart.getRendererPortrait(getBaseContext());
Log.d("Debug", "alldatasize: " + Alldata.size());
Log.d("Debug", "dataset " + datasetOut.getSeriesCount() );
mChartView = ChartFactory.getLineChartView(getBaseContext(), datasetOut , mRendererOut);
layout.removeAllViews();
layout.addView(mChartView, new LayoutParams(LayoutParams.WRAP_CONTENT, getHeight()));
Log.v("CC_trace", "CCChartGenerate");
}
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