PieChart is getting displayed only when I click on the layout.

[suvansh007]

I am trying to make a piechart but it is not getting displayed on the layout unless i click on the layout while all other charts are working fine. here's the code:

`private fun populateDonutChart(responseDonutChart: List){

    val brand = ArrayList<String>()
    var index = 0f
    var color_index = 0
    val data = PieData()
    for(item in responseDonutChart){
        val kpiValue = ArrayList<PieEntry>()
        kpiValue.add(PieEntry(item.kPIvalue.toFloat(), item.brand,index))
        brand.add(item.brand)
        val pieDataSet = PieDataSet(kpiValue, item.brand)

// if(color_index<7) // pieDataSet.setColor(getColor(piechart.context, getColorID(color_index))) // else // pieDataSet.setColor(getColorID(color_index)) pieDataSet.setColor(getColor(piechart.context, getColorID(color_index))) data.addDataSet(pieDataSet) index++ color_index++ } addDatatoPieChart(data) }

private fun addDatatoPieChart(data: PieData){
    piechart.setUsePercentValues(true)
    piechart.data = data

// piechart.setDescription(description); piechart.setDrawHoleEnabled(true) piechart.setHoleRadius(58f) // dataSet.setColors(ColorTemplate.VORDIPLOM_COLORS); // data.setValueTextSize(13f); // data.setValueTextColor(Color.DKGRAY); // piechart.isLayoutRequested piechart.setTouchEnabled(false) piechart.setd piechart.requestLayout() // piechart.post { // piechart.invalidate() // }

}`

I have already by using piechart.requestLayout() , invalidate(), invalidate in post{....} as you can see in the above code.

The dependency in android is: implementation 'com.github.PhilJay:MPAndroidChart:v3.1.0-alpha'

Please help!

[Chakib-Temal]

i used already a PieChart

use this code :

package com.example.chakib.myapplication;

import android.graphics.Color;
import android.graphics.Typeface;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.text.SpannableString;
import android.text.style.RelativeSizeSpan;

import android.view.WindowManager;
import com.github.mikephil.charting.animation.Easing;
import com.github.mikephil.charting.charts.PieChart;
import com.github.mikephil.charting.components.Legend;
import com.github.mikephil.charting.components.Legend.LegendPosition;
import com.github.mikephil.charting.data.Entry;
import com.github.mikephil.charting.data.PieData;
import com.github.mikephil.charting.data.PieDataSet;
import com.github.mikephil.charting.formatter.PercentFormatter;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    private PieChart mChart;

    private Typeface tf;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.activity_main);

        mChart = (PieChart) findViewById(R.id.chart1);
        //mChart.setUsePercentValues(true);
        mChart.setDescription("");
        mChart.setExtraOffsets(5, 10, 5, 5);

        mChart.setDragDecelerationFrictionCoef(0.95f);
        mChart.setCenterText(generateCenterSpannableText());

        mChart.setDrawHoleEnabled(true);
        mChart.setHoleColor(Color.WHITE);

        mChart.setTransparentCircleColor(Color.WHITE);
        mChart.setTransparentCircleAlpha(110);

        mChart.setHoleRadius(58f);
        mChart.setTransparentCircleRadius(61f);

        mChart.setDrawCenterText(true);

        mChart.setRotationAngle(0);

        // enable rotation of the chart by touch
        mChart.setRotationEnabled(true);
        mChart.setHighlightPerTapEnabled(true);

        setData(3, 100);

        mChart.animateY(1400, Easing.EasingOption.EaseInOutQuad);

        Legend l = mChart.getLegend();
        l.setPosition(LegendPosition.RIGHT_OF_CHART_CENTER);
        l.setTextSize(60);
        l.setFormSize(20f);

        l.setYEntrySpace(60f);
        l.setYOffset(0f);
    }

    private void setData(int count, float range) {

        float mult = range;

        ArrayList<Entry> yVals1 = new ArrayList<Entry>();

        // IMPORTANT: In a PieChart, no values (Entry) should have the same
        // xIndex (even if from different DataSets), since no values can be
        // drawn above each other.
        for (int i = 0; i < count ; i++) {
            yVals1.add(new Entry((float) 33.3, i));
        }

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

        String [] mParties = {"En-dessous", "Dans la cible", "Au-dessus"};
        for (int i = 0; i < count ; i++)
            xVals.add(mParties[i]);

        PieDataSet dataSet = new PieDataSet(yVals1, "");
        dataSet.setSliceSpace(3f);
        dataSet.setSelectionShift(5f);

        // add a lot of colors

        ArrayList<Integer> colors = new ArrayList<Integer>();
        colors.add(Color.RED);
        colors.add(Color.GREEN);

        int orange = Color.rgb(255, 165, 0);
        colors.add(orange);
        dataSet.setColors(colors);
        //dataSet.setSelectionShift(0f);

        PieData data = new PieData(xVals, dataSet);
        data.setValueFormatter(new PercentFormatter());
        data.setValueTextSize(11f);
        data.setValueTextColor(Color.WHITE);
        //data.setValueTypeface(tf);
        List<Integer> textColor = new ArrayList<>();
        textColor.add(Color.BLUE);
        textColor.add(Color.BLUE);
        textColor.add(Color.BLUE);

        data.setValueTextColors(textColor);
        mChart.setData(data);

        // undo all highlights
        mChart.highlightValues(null);

        mChart.invalidate();
    }

    private SpannableString generateCenterSpannableText() {

        SpannableString s = new SpannableString("Durée dans la cible\n70-180 mg/dL");
        s.setSpan(new RelativeSizeSpan(1.7f), 0, 19, 0);

        return s;
    }
}