0

我在网络服务中有一个数据连接。在 Assynctask 中，我每 5 秒获取一次数据。数据到达后，我制作了新的数据集，因为 mChartView 活着，我只是重新绘制。我的问题来了。折线图重绘不会重新生成图表，只是在最后一个顶部创建一个新的顶部。当然还有 2-3 分钟的记忆 :(

这是我的代码：

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");   

        }




    }



}

也许我没有在好地方调用 repaint() :)

图表图像1

谢谢帮助...

4

1 回答 1

7

在我的我从不叫重绘。我只是重建旧的

像这样：

    @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");   
}
于 2012-02-21T08:55:56.327 回答