java - MPAndroidChart 插入 Y 轴 listArray 变量或动态参数

Question

我想将变量或动态参数引入 Y 轴 (MPAndroidChart)。这些参数来自远程服务器，它们不是固定参数，因为它们是从传感器实时捕获的“温度和湿度”，然后在 Mysql 中分配，并在我的 APP 中获取这些数据后制作图表。

我想就如何制作它获得任何帮助。我有这样的代码:

对于方法 CapatarParametros() 中的参数(湿度和温度)，使用 loopj 连接到服务器并获取数据:

List<String> allNames = new ArrayList<String>();
JSONArray cast = jsonobject.getJSONArray("result");
for (int i=0; i<cast.length(); i++) {
    JSONObject parametrosdht11 = cast.getJSONObject(i);
    String temperatura = parametrosdht11.getString("temperatura");
    String humedad = parametrosdht11.getString("humedad");
    allNames.add(temperatura);
    allNames.add(humedad);

此代码提供温度和湿度。现在我需要将这些参数添加到 Oncreate 中的 y 轴(例如“温度”):

 LineChart lineChart = (LineChart) findViewById(R.id.chart);
 ArrayList<Entry> entries = new ArrayList<>();

Answer 1

public class DatosSensor extends AppCompatActivity {

    private DrawerLayout drawerLayout;

    private static final String SENSORS_URL = "http://.....";

    // Progress Dialog Object
    ProgressDialog prgDialog;
    // Error Msg TextView Object
    TextView errorMsg;
    // Email Edit View Object

    private String temeperatura;

    ArrayList<Entry> temperature = new ArrayList<>();
    ArrayList<Entry> yVals2 = new ArrayList<>();

    LineChart mChart;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.actividad_datos_sensor);
        String idObjeto = (String) getIntent().getExtras().getSerializable("IdentidadEnviada");

        CaptarParametros(idObjeto);

        mChart = (LineChart) findViewById(R.id.chart);

        // no description text
        mChart.setDescription("");
        mChart.setNoDataTextDescription("You need to provide data for the chart.");

        // enable touch gestures
        mChart.setTouchEnabled(true);

        mChart.setDragDecelerationFrictionCoef(0.9f);

        // enable scaling and dragging
        mChart.setDragEnabled(true);
        mChart.setScaleEnabled(true);
        mChart.setDrawGridBackground(false);
        mChart.setHighlightPerDragEnabled(true);

        // if disabled, scaling can be done on x- and y-axis separately
        mChart.setPinchZoom(true);

        // set an alternative background color
        mChart.setBackgroundColor(Color.LTGRAY);

        mChart.animateX(2500);

        XAxis xAxis = mChart.getXAxis();
        xAxis.setTextSize(11f);
        xAxis.setPosition(XAxis.XAxisPosition.BOTTOM);
        xAxis.setAxisMaxValue(100f);
        xAxis.setAxisMinValue(0f);
        xAxis.setTextColor(Color.WHITE);
        xAxis.setDrawGridLines(false);
        xAxis.setDrawAxisLine(false);

        //modify leftYaxis range similarly others
        YAxis leftAxis = mChart.getAxisLeft();
        leftAxis.setTextColor(ColorTemplate.getHoloBlue());
        leftAxis.setAxisMaxValue(100f);
        leftAxis.setAxisMinValue(0f);
        leftAxis.setDrawGridLines(false);
        leftAxis.setGranularityEnabled(true);


        YAxis rightAxis = mChart.getAxisRight();
        rightAxis.setTextColor(Color.RED);
        rightAxis.setAxisMaxValue(100f);
        rightAxis.setAxisMinValue(0f);
        rightAxis.setDrawGridLines(false);
        rightAxis.setDrawZeroLine(false);
        rightAxis.setGranularityEnabled(false);


        // add data
        setData();
    }


    private void CaptarParametros(String idObjeto) {

        AsyncHttpClient client = new AsyncHttpClient();

        RequestParams params = new RequestParams();
        params.put(UtilitiesGlobal.SENSOR_ID, idObjeto);

        RequestHandle post = client.post(this, SENSORS_URL, params, new JsonHttpResponseHandler() {
            @Override
            public void onStart() {
                // called before request is started
            }

            @Override
            public void onSuccess(int statusCode, Header[] headers, JSONObject response) {
                // called when response HTTP status is "200 OK"
                JSONObject jsonobject = null;
                JSONObject dht11JSONbject = null;
                JSONArray dht11JSONarray = null;


                try {

                    jsonobject = new JSONObject(String.valueOf(response));
                    //dht11JSONbject = jsonobject.getJSONObject("result");


                    List<String> allNames = new ArrayList<String>();
                    JSONArray cast = jsonobject.getJSONArray("result");
                    for (int i=0; i<cast.length(); i++) {
                        JSONObject parametrosdht11 = cast.getJSONObject(i);
                        String temperatura = parametrosdht11.getString("temperatura");
                        String humedad = parametrosdht11.getString("humedad");
                        temperature.add(new Entry(Float.valueOf(i),Float.valueOf(temperatura)));
                        yVals2.add(new Entry(Float.valueOf(i),Float.valueOf(humedad)));

                        //rrefresh
                        mChart.notifyDataSetChanged();
                        //Log.i(UtilitiesGlobal.TAG, "onSuccess: loopj " + usuarioiJSONbject);
                        Log.i(UtilitiesGlobal.TAG, "onSuccess: loopj " +"temperatura: "+ temperatura +" humedad: " +humedad);
                    }

    private void setData() {
//data set represents a lin
        LineDataSet set1, set2;

        // create a dataset and give it a type
        //modifications with colour and stuf
        set1 = new LineDataSet(temperature, "Temperatur");
        set1.setAxisDependency(YAxis.AxisDependency.LEFT);
        set1.setColor(ColorTemplate.getHoloBlue());
        set1.setCircleColor(Color.WHITE);
        set1.setLineWidth(2f);
        set1.setCircleRadius(3f);
        set1.setFillAlpha(65);
        set1.setFillColor(ColorTemplate.getHoloBlue());
        set1.setHighLightColor(Color.rgb(244, 117, 117));
        set1.setDrawCircleHole(false);


        // similar above
        set2 = new LineDataSet(yVals2, "Humidity");
        set2.setAxisDependency(YAxis.AxisDependency.RIGHT);
        set2.setColor(Color.RED);
        set2.setCircleColor(Color.WHITE);
        set2.setLineWidth(2f);
        set2.setCircleRadius(1f);
        set2.setFillAlpha(65);
        set2.setFillColor(Color.RED);
        set2.setDrawCircleHole(false);
        set2.setHighLightColor(Color.rgb(244, 117, 117));
        //set2.setFillFormatter(new MyFillFormatter(900f));

        ArrayList<ILineDataSet> dataSets = new ArrayList<ILineDataSet>();
        dataSets.add(set1); // add the datasets
        dataSets.add(set2);

        // create a data object with the datasets
        LineData data = new LineData(dataSets);
        data.setValueTextColor(Color.WHITE);
        data.setValueTextSize(9f);

        // set data
        Log.i("Lists Sizedata",temperature.size() + " and " + yVals2.size());
        mChart.setData(data);
    }
}

创建两个 Activity 。一个用于图表，另一个用于 Asyncronics 的接口(interface)。数据传感器.java

public class DatosSensor extends AppCompatActivity implements onLoopjTaskFinished {

    private onLoopjTaskFinished loopjListener;

    private DrawerLayout drawerLayout;

    ProgressDialog prgDialog;
    TextView errorMsg;
    private String temeperatura;

    ArrayList<Entry> entries;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.actividad_datos_sensor);

        String idObjeto = (String) getIntent().getExtras().getSerializable("IdentidadEnviada");

        CaptarParametros(idObjeto);

        LineChart lineChart = (LineChart) findViewById(R.id.chart);

        entries = new ArrayList<>();
        //entries.add(new Entry(60f, 0));
        //entries.add(new Entry(6f, 1));
        //entries.add(new Entry(6f, 2));
        //entries.add(new Entry(2f, 3));
        //entries.add(new Entry(18f, 4));
        //entries.add(new Entry(60f, 5));

        Log.i(UtilitiesGlobal.TAG, "onCreate: entries size = " + entries.size());

        LineDataSet dataset = new LineDataSet(entries, "# of Calls");

        ArrayList<String> labels = new ArrayList<String>();


        LineData data = new LineData(labels, dataset);
        dataset.setColors(ColorTemplate.COLORFUL_COLORS); //
        dataset.setDrawCubic(true);
        dataset.setDrawFilled(true);


        lineChart.setData(data);
        lineChart.animateY(5000);


        //Toast.makeText(getApplicationContext(), idObjeto, Toast.LENGTH_LONG).show();

        agregarToolbar();

    @Override
    public void onLoopjFinishedSuccess(JSONObject jsonObject) {
        List<String> allNames = new ArrayList<String>();
        JSONArray cast = null;
        try {
            cast = jsonObject.getJSONArray("result");
        } catch (JSONException e) {
            e.printStackTrace();
        }
        for (int i = 0; i < cast.length(); i++) {
            JSONObject parametrosdht11 = null;
            String temperatura = null;
            String humedad = null;
            try {
                parametrosdht11 = cast.getJSONObject(i);
                temperatura = parametrosdht11.getString("temperatura");
                humedad = parametrosdht11.getString("humedad");
                allNames.add(temperatura);
                allNames.add(humedad);

                float tempFloat = Float.parseFloat(temperatura);
                entries.add(new Entry(tempFloat, i));

            } catch (JSONException e) {
                e.printStackTrace();
            }

            //Log.i(UtilitiesGlobal.TAG, "onSuccess: loopj " + usuarioiJSONbject);
            Log.i(UtilitiesGlobal.TAG, "onSuccess: loopj " + "temperatura: " + temperatura + " humedad: " + humedad);
        }
    }

Interface (onLoopjTaskFinished)

    public interface onLoopjTaskFinished {
    void onLoopjFinishedSuccess(JSONObject jsonObject);
    void onLoopjFinishedFailure(int statusCode);

}

我把一些不相关的代码拿出来，只是为了简化。