android – Mp饼图大小增加

概述我在我的应用程序中使用Mp饼图.它显示非常小的尺寸,我试图增加它的大小但它没有增加它的大小.我无法找出问题所在.请告诉我们如何增加尺寸. 这是我的代码： public class MPpiechart extends Activity {private LinearLayout mainLayout;private PieChart mChart;// we're going to dis 我在我的应用程序中使用Mp饼图.它显示非常小的尺寸,我试图增加它的大小但它没有增加它的大小.我无法找出问题所在.请告诉我们如何增加尺寸.

这是我的代码：

public class MPpIEchart extends Activity {private linearLayout mainLayout;private PIEChart mChart;// we're going to display pIE chart for smartphones martket sharesprivate float[] yData = { 5,10,15,30,40 };private String[] xData = { "Sony","Huawei","LG","Apple","Samsung" };@OverrIDeprotected voID onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentVIEw(R.layout.pIEgraph);    mainLayout = (linearLayout) findVIEwByID(R.ID.mainLayout);    mChart = new PIEChart(this);    // add pIE chart to main layout    mainLayout.addVIEw(mChart);    mainLayout.setBackgroundcolor(color.parsecolor("#55656C"));    // configure pIE chart    mChart.setUsePercentValues(true);    mChart.setDescription("Smartphones Market Share");    // enable hole and configure    mChart.setDrawHoleEnabled(true);   //mChart.setHolecolortransparent(true);    mChart.setHoleRadius(7);    mChart.settransparentCircleRadius(10);    // enable rotation of the chart by touch    mChart.setRotationAngle(0);    mChart.setRotationEnabled(true);    // set a chart value selected Listener    mChart.setonChartValueSelectedListener(new OnChartValueSelectedListener() {        @OverrIDe        public voID onValueSelected(Entry e,int dataSetIndex,Highlight h) {            // display msg when value selected            if (e == null)                return;            Toast.makeText(MPpIEchart.this,xData[e.getXIndex()] + " = " + e.getVal() + "%",Toast.LENGTH_SHORT).show();        }        @OverrIDe        public voID onnothingSelected() {        }    });    // add data    addData();    // customize legends    Legend l = mChart.getLegend();    l.setposition(Legend.Legendposition.RIGHT_OF_CHART);    l.setXEntrySpace(7);    l.setYEntrySpace(5);}private voID addData() {    ArrayList<Entry> yVals1 = new ArrayList<Entry>();    for (int i = 0; i < yData.length; i++)        yVals1.add(new Entry(yData[i],i));    ArrayList<String> xVals = new ArrayList<String>();    for (int i = 0; i < xData.length; i++)        xVals.add(xData[i]);    // create pIE data set    PIEDataSet dataSet = new PIEDataSet(yVals1,"Market Share");    dataSet.setSliceSpace(3);    dataSet.setSelectionShift(5);    // add many colors    ArrayList<Integer> colors = new ArrayList<Integer>();    for (int c : colorTemplate.VORDIPLOM_colorS)        colors.add(c);    for (int c : colorTemplate.JOYFul_colorS)        colors.add(c);    for (int c : colorTemplate.colorFul_colorS)        colors.add(c);    for (int c : colorTemplate.liBERTY_colorS)        colors.add(c);    for (int c : colorTemplate.PASTEL_colorS)        colors.add(c);    colors.add(colorTemplate.getHoloBlue());    dataSet.setcolors(colors);    // instantiate pIE data object Now    PIEData data = new PIEData(xVals,dataSet);    data.setValueFormatter(new PercentFormatter());    data.setValueTextSize(11f);    data.setValueTextcolor(color.GRAY);    mChart.setData(data);    // undo all highlights    mChart.highlightValues(null);    // update pIE chart    mChart.invalIDate();}

PIEgraph.java

public class PIEGraph extends VIEw {private Paint pIEPaint;private RectF rectF;private float[] data;public PIEGraph(Context context,AttributeSet attrs){    super(context,attrs);    pIEPaint = new Paint();    pIEPaint.setAntiAlias(true);    pIEPaint.setDither(true);    pIEPaint.setStyle(Paint.Style.FILL);   /* mShadowPaint = new Paint(0);    mShadowPaint.setcolor(0xff101010);    mShadowPaint.setMaskFilter(new BlurMaskFilter(8,BlurMaskFilter.Blur.norMAL));*/}public float[] pIESegment(){    float[] segValues = new float[this.data.length];    float Total = getTotal();    for (int i = 0; i < this.data.length; i++){        segValues[i] = (this.data[i]/Total) * 360;    }  //  x = ( radius of pIE chart /2)*cos(angle in radians) [angle in radians =    Math.toradians(half the sweep angle in degrees)    return segValues;}public float getTotal(){    float total = 0;    for (float val : this.data){        total +=val;    }    return total;}@OverrIDeprotected voID onDraw(Canvas canvas){    if (data != null){        int top = 0;        int left = 0;        int endBottom = getHeight();        int endRight = endBottom;        rectF = new RectF(left,top,endRight,endBottom);        float[] segment = pIESegment();        float segStartPoint = 0;        for (int i = 0; i < segment.length; i++){            Random rnd = new Random();            int[] color = {getResources().getcolor(R.color.blue),getResources().getcolor(R.color.yellow),getResources().getcolor(R.color.red),getResources().getcolor(R.color.gray)};          //  int color = color.argb(255,(int)segment[i],rnd.nextInt(256),rnd.nextInt(256));            String[] name ={(String) getResources().getText(R.string.Energy),(String) getResources().getText(R.string.Fat),(String) getResources().getText(R.string.Fiber),(String) getResources().getText(R.string.Methi)};            pIEPaint.setcolor(color[i]);            canvas.drawText(name[i],segStartPoint,segment[i],pIEPaint);            canvas.drawArc(rectF,true,pIEPaint);            segStartPoint += segment[i];        }    }}public voID setData(float[] data){    this.data = data;    invalIDate();}}

pIEgraph.xml：

<?xml version="1.0" enCoding="utf-8"?><linearLayout xmlns:androID="http://schemas.androID.com/apk/res/androID"    androID:orIEntation="vertical" androID:layout_wIDth="match_parent"    androID:layout_height="match_parent">    <relativeLayout        androID:gravity="center"        androID:orIEntation="vertical"        androID:ID="@+ID/mainLayout"        androID:layout_wIDth="fill_parent"        androID:layout_height="fill_parent"        >    </relativeLayout></linearLayout>

解决方法 内部饼图数据大小

.setValueTextSize(12);

中心数据大小

.setCenterTextSize(30);

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