MPAndroidChart not working. Failed to add data into PieEntry

Failed to add data into PieEntry. All the dependencies and repositories are added correctly. It can run, but the output is not as same as what I code in. I have no idea about how to solve it.

Main Activity:

private void ShowPieChart() {

    ArrayList<PieEntry> pieEntries = new ArrayList<>();
    String label = "type";

    //initializing data
    Map<String, Integer> typeAmountMap = new HashMap<>();
    typeAmountMap.put("Toys",200);
    typeAmountMap.put("Snacks",230);
    typeAmountMap.put("Clothes",100);
    typeAmountMap.put("Stationary",500);
    typeAmountMap.put("Phone",50);

    //initializing colors for the entries
    ArrayList<Integer> colors = new ArrayList<>();
    colors.add(Color.parseColor("#304567"));
    colors.add(Color.parseColor("#309967"));
    colors.add(Color.parseColor("#476567"));
    colors.add(Color.parseColor("#890567"));
    colors.add(Color.parseColor("#a35567"));
    colors.add(Color.parseColor("#ff5f67"));
    colors.add(Color.parseColor("#3ca567"));

    //input data and fit data into pie chart entry
    for(String type: typeAmountMap.keySet()){
        pieEntries.add(new PieEntry(typeAmountMap.get(type).floatValue(), type));
    }

    PieDataSet pieDataSet = new PieDataSet(pieEntries,label);
    pieDataSet.setValueTextSize(12f);
    pieDataSet.setColors(colors);
    PieData pieData = new PieData(pieDataSet);
    pieData.setDrawValues(true);

    pieChart.setData(pieData);
    pieChart.invalidate();

    pieChart.setUsePercentValues(true);
    pieChart.getDescription().setEnabled(false);
    pieChart.setRotationEnabled(true);
    pieChart.setDragDecelerationFrictionCoef(0.9f);
    pieChart.setRotationAngle(0);

    pieChart.setHighlightPerTapEnabled(true); 
    pieChart.animateY(1400, Easing.EasingOption.EaseInOutQuad);
    pieChart.setHoleColor(Color.parseColor("#000000"));
}

XML:

<com.github.mikephil.charting.charts.PieChart
        android:id="@+id/pieChart"
        android:layout_above="@+id/bottom_navi"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_alignParentStart="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_alignParentEnd="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentBottom="true"
        android:layout_marginStart="160dp"
        android:layout_marginLeft="160dp"
        android:layout_marginTop="287dp"
        android:layout_marginEnd="144dp"
        android:layout_marginRight="144dp"
        android:layout_marginBottom="391dp" />