Question

我在Android Studio中使用MPAndroiChart v3.0.3库并将LineChart代码放在onViewCreated（）内的片段中，但是黄色文本＆＃34; rt data av＆＃34;正在屏幕中心显示，在我的高亮值文本下方。如何删除它并自定义显示的文本以增加其宽度，因为它只在一行中显示4个字符，其余的在其他行中。我试过＆＃34; android：singleLine =＆＃34; true＆＃34;＆＃34;在.xml中但它只剪切了文本。

LineChart的代码：

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

    ArrayList<String> xAXES = new ArrayList<>();
    ArrayList<Entry> yAXESsin = new ArrayList<>();
    ArrayList<Entry> yAXEScos = new ArrayList<>();

    double x = 0 ;
    int numDataPoints = 256;
    for(int i=0;i<numDataPoints;i++){
        float sinFunction = Float.parseFloat(String.valueOf(Math.sin(x)));
        float cosFunction = Float.parseFloat(String.valueOf(Math.cos(x)));
        x = x + 0.1;
        yAXESsin.add(new Entry(i,100*sinFunction));
        yAXEScos.add(new Entry(i,cosFunction));
        xAXES.add(i, String.valueOf(x));
    }


    ArrayList<ILineDataSet> lineDataSets = new ArrayList<>();

    //Customize Data
    LineDataSet lineDataSet1 = new LineDataSet(yAXEScos,"cos");
    lineDataSet1.setDrawCircles(false);
    lineDataSet1.setColor(Color.BLUE);
    lineDataSet1.setAxisDependency(YAxis.AxisDependency.RIGHT);
    lineDataSet1.setHighLightColor(Color.RED);

    LineDataSet lineDataSet2 = new LineDataSet(yAXESsin,"sin");
    lineDataSet2.setDrawCircles(false);
    lineDataSet2.setColor(Color.BLACK);
    lineDataSet2.setAxisDependency(YAxis.AxisDependency.LEFT);
    lineDataSet2.setHighLightColor(Color.RED);

    lineDataSets.add(lineDataSet1);
    lineDataSets.add(lineDataSet2);


    LineData lineData = new LineData(lineDataSets);
    lineData.setDrawValues(true); //Show values

    //Set X Axis
    XAxis xAxis = lineChart.getXAxis();
    xAxis.setPosition(XAxis.XAxisPosition.BOTTOM);

    //Set Marker
    YourMarkerView marker = new YourMarkerView(getContext(),R.layout.fragment_tab3);
    lineChart.setMarker(marker);

    //Customize graph
    lineChart.setHighlightPerTapEnabled(true);
    lineChart.setHighlightPerDragEnabled(true);
    lineChart.setPinchZoom(false);
    lineChart.setDoubleTapToZoomEnabled(false);
    lineChart.animateXY(1000, 1000);
    lineChart.setVisibleXRangeMaximum(65f);

    //Send Data
    lineChart.setData(lineData);
    lineChart.invalidate();

MarkerView的代码：

public class YourMarkerView extends MarkerView {

private TextView tvContent;

public YourMarkerView(Context context, int layoutResource) {
    super(context, layoutResource);

    // find your layout components
    tvContent = (TextView) findViewById(R.id.tvContent);

}

// callbacks everytime the MarkerView is redrawn, can be used to update the
// content (user-interface)
@Override
public void refreshContent(Entry e, Highlight highlight) {

    tvContent.setText("" + e.getY());

    // this will perform necessary layouting
    super.refreshContent(e, highlight);
}

private MPPointF mOffset;

@Override
public MPPointF getOffset() {

    if(mOffset == null) {
        // center the marker horizontally and vertically
        mOffset = new MPPointF(-(getWidth() / 2), -getHeight());
    }

    return mOffset;
}}

Fragment_tab3.xml代码：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.android.mytabs2.Tab3">

<!-- TODO: Update blank fragment layout -->


<com.github.mikephil.charting.charts.LineChart
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/lineChart" >

    <TextView
        android:id="@+id/tvContent"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="16dp"
        android:textColor="@android:color/black" />

</com.github.mikephil.charting.charts.LineChart>

MPAndroidChart图书馆 - ＆＃34; rt数据av＆＃34;设置MarkerView后显示为黄色

0 个答案: