Android 使用GraphView库从Json数据绘制图形

您好，我已经编写了一个json解析器来提取像这样的数组中的一些数据

“记录”：[
[
"2015-01-11 04:50",
1.5
],
[
"2015-01-11 05:00",
1.6
],
[
"2015-01-11 05:10",
1.7
],
[
"2015-01-11 05:20",
1.6
],
[
"2015-01-11 05:30",
1.5
],
[
"2015-01-11 05:40",
1.7
],
[
"2015-01-11 05:50",
1.8
],
[
"2015-01-11 06:00",
1.8
],
[
"2015-01-11 06:10",
1.9
],
[
"2015-01-11 06:20",
1.8
],
[
"2015-01-11 06:30",
1.6
],
[
"2015-01-11 06:40",
1.4
],
[
"2015-01-11 06:50",
1.6
],
[
"2015-01-11 07:00",
1.4
],
[
"2015-01-11 07:10",
1.4
]，

]

但现在我无法应用图形视图库来绘制x，y并在应用程序中以线图的形式显示数据。请告知我在下面的代码中缺少什么。帮助我节省很多时间，因为我尝试了GraphViewSeries exampleSeries数据，它可以工作，但我不想硬编码gragh数据。由于它是由RESTWeb服务提供的，所以只需要使用Json解析器绘制数据

这是我的密码

public class GraphFragment extends Fragment implements OnClickListener {
Context context;
String label_y [];
ArrayList<DataAssetGraph> alAssetGraph = new ArrayList<DataAssetGraph>();
TextView tvNoItemsG;
LinearLayout llGraphView;
Button btnOneDayG, btnOneWeekG, btnOneMonthG;
String startDate;
String assetId;
ProgressDialog dialog;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    View view = null;
    view = inflater.inflate(R.layout.fragment_chart, null);
    initView(view);
    tvNoItemsG.setVisibility(View.VISIBLE);
    /*if (getArguments() != null) {

        alAssetGraph = (ArrayList<DataAssetGraph>) getArguments()
                .getSerializable(WebElement.RECORDS);
        if (alAssetGraph != null && alAssetGraph.size() > 0) {
            label_y = getHorizontalLabels(alAssetGraph);
            initGraphView();
        } else {
            llGraphView.setVisibility(View.GONE);
            tvNoItemsG.setVisibility(View.VISIBLE);

        }
    }*/
    return view;
}

private void initView(View view) {
    tvNoItemsG = (TextView) view.findViewById(R.id.tvNoItemsG);
    llGraphView = (LinearLayout) view.findViewById(R.id.llGraphView);
    btnOneDayG = (Button) view.findViewById(R.id.btnOneDayG);
    btnOneWeekG = (Button) view.findViewById(R.id.btnOneWeekG);
    btnOneMonthG = (Button) view.findViewById(R.id.btnOneMonthG);
    btnOneDayG.setSelected(true);
    btnOneDayG.setOnClickListener(this);
    btnOneMonthG.setOnClickListener(this);
    btnOneWeekG.setOnClickListener(this);
}

private void initGraphView() {

    /*GraphViewSeries exampleSeries = new GraphViewSeries(
            new GraphViewData[] { new GraphViewData(1, 2.0d),
                    new GraphViewData(2, 1.5d), new GraphViewData(3, 2.5d),
                    new GraphViewData(4, 1.0d) });*/

    GraphView graphView = new LineGraphView(getActivity(), "");

    // graphView.addSeries(exampleSeries);

    if (label_y != null && label_y.length > 0) {
        graphView.setHorizontalLabels(label_y);
    }
    /*
     * else { GraphViewSeries exampleSeries = new GraphViewSeries(new
     * GraphViewData[]{new GraphViewData(1, 2.0d), new GraphViewData(2,
     * 1.5d),new GraphViewData(3, 2.5d),new GraphViewData(4, 1.0d)});
     * graphView.addSeries(exampleSeries); }
     */
    llGraphView.addView(graphView);
}

private GraphViewData[] getArrayOfPoints() {
    GraphViewData[] mArray = new GraphViewData[10];
    return mArray;
}

private String[] getHorizontalLabels(ArrayList<DataAssetGraph> arrayList) {
    int size = arrayList.size();
    String[] array_labels = new String[size];

    for (int i = 0; i < size; i++) {
        array_labels[i] = arrayList.get(i).x_cord;
    }
    return array_labels;

}

@Override
public void onClick(View v) {
    switch (v.getId()) {
    case R.id.btnOneDayG:
        btnOneWeekG.setSelected(false);
        btnOneMonthG.setSelected(false);
        if (!btnOneDayG.isSelected()) {
            btnOneDayG.setSelected(true);
            String end_date = GlobalData.getDateAfterOneDay();
            getGraphHistory(end_date);
        }
        break;

    case R.id.btnOneWeekG:
        btnOneDayG.setSelected(false);
        btnOneMonthG.setSelected(false);
        if (!btnOneWeekG.isSelected()) {
            btnOneWeekG.setSelected(true);
            String end_date = GlobalData.getDateAfterOneWeek();
            getGraphHistory(end_date);
        }
        break;
    case R.id.btnOneMonthG:
        btnOneWeekG.setSelected(false);
        btnOneDayG.setSelected(false);
        if (!btnOneMonthG.isSelected()) {
            btnOneMonthG.setSelected(true);
            String end_date = GlobalData.getDateAfterOneMonth();
            getGraphHistory(end_date);
        }
        break;

    default:
        break;
    }
}

private void getGraphHistory(String end_date) {
    dialog = new ProgressDialog(getActivity());
    dialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
    dialog.setMessage("Retrieving graph...");
    dialog.setCanceledOnTouchOutside(false);
    dialog.show();
    startDate = GlobalData.getCurrentDate();
    end_date =  GlobalData.getDateAfterOneDay();
    assetId = ComponentActivity.assetId;
    new LoadAssetGraphTask(getActivity(), assetId, end_date, startDate ) {
        @Override
        protected void onPostExecute(ArrayList<DataAssetGraph> result) {
            super.onPostExecute(result);
            if (dialog.isShowing())
                dialog.dismiss();
            if (result != null && result.size() > 0) {
                label_y = getHorizontalLabels(result);
                initGraphView();
            } else {
                llGraphView.setVisibility(View.GONE);
                tvNoItemsG.setVisibility(View.VISIBLE);

            }
        };
    }.execute();

}

公共类GraphFragment扩展了片段实现OnClickListener{
语境；
字符串标签_y[]；
ArrayList alAssetGraph=新的ArrayList（）；
文本视图tvNoItemsG；
线性布局图视图；
按钮btnOneDayG、btnOneWeekG、btnOneMonthG；
字符串起始日期；
字符串assetId；
进程对话；
@凌驾
创建视图上的公共视图（布局、充气机、视图组容器、，
Bundle savedInstanceState）{
视图=空；
视图=充气机。充气（R.layout.fragment_图表，空）；
initView（视图）；
设置可见性（View.VISIBLE）；
/*如果（getArguments（）！=null）{
alAssetGraph=（ArrayList）getArguments（）
.getSerializable（WebElement.RECORDS）；
if（alAssetGraph！=null&&alAssetGraph.size（）>0）{
label_y=getHorizontalLabels（alAssetGraph）；
initGraphView（）；
}否则{
llGraphView.setVisibility（View.GONE）；
设置可见性（View.VISIBLE）；
}
}*/
返回视图；
}
私有void initView（视图）{
tvNoItemsG=（TextView）view.findViewById（R.id.tvNoItemsG）；
llGraphView=（LinearLayout）view.findViewById（R.id.llGraphView）；
btnOneDayG=（按钮）view.findViewById（R.id.btnOneDayG）；
btnOneWeekG=（按钮）view.findViewById（R.id.btnOneWeekG）；
btnOneMonthG=（按钮）view.findviewbyd（R.id.btnOneMonthG）；
btnOneDayG.setSelected（真）；
btnOneDayG.setOnClickListener（此）；
btnOneMonthG.setOnClickListener（this）；
btnOneWeekG.setOnClickListener（此）；
}
私有void initGraphView（）{
/*GraphViewSeries exampleSeries=新GraphViewSeries(
新GraphViewData[]{新GraphViewData（1,2.0d），
新GraphViewData（2,1.5d），新GraphViewData（3,2.5d），
新的GraphViewData（4,1.0d）}*/
GraphView GraphView=新行GraphView（getActivity（），“”）；
//graphView.addSeries（示例Series）；
if（label_y！=null&&label_y.length>0）{
图形视图设置水平标签（标签y）；
}
/*
*else{GraphViewSeries exampleSeries=新的GraphViewSeries（新的
*GraphViewData[]{新的GraphViewData（1,2.0d），新的GraphViewData（2，
*1.5d），新GraphViewData（3,2.5d），新GraphViewData（4,1.0d）}；
*graphView.addSeries（exampleSeries）；}
*/
llGraphView.addView（graphView）；
}
私有GraphViewData[]getArrayOfPoints（）{
GraphViewData[]mArray=新GraphViewData[10]；
返回玛丽；
}
私有字符串[]getHorizontalLabels（ArrayList ArrayList）{
int size=arrayList.size（）；
字符串[]数组_标签=新字符串[大小]；
对于（int i=0；iGraphView.GraphViewData[] recordGraphData=new GraphView.GraphViewData[records.size()];
for(int i=0; i<records.size();i++)
{
recordGraphData[i]=new GraphView.GraphViewData(i,records.get(i).get(1));
}

graphView.addSeries(new GraphViewSeries(recordsGraphData));