dependencies {
implementation 'com.github.PhilJay:MPAndroidChart:v3.1.0'
}
PieChart pieChart = findViewById(R.id.pie_chart);
pieChart.setUsePercentValues(true);
pieChart.getDescription().setEnabled(false);
pieChart.setExtraOffsets(5, 10, 5, 5);
pieChart.setDragDecelerationFrictionCoef(0.95f);
pieChart.setDrawHoleEnabled(true);
pieChart.setHoleColor(Color.WHITE);
pieChart.setTransparentCircleRadius(61f);
pieChart.animateY(1000, Easing.EaseInOutCubic);
ArrayList entries = new ArrayList<>();
entries.add(new PieEntry(18.5f, "Green"));
entries.add(new PieEntry(26.7f, "Yellow"));
entries.add(new PieEntry(24.0f, "Red"));
entries.add(new PieEntry(30.8f, "Blue"));
PieDataSet dataSet = new PieDataSet(entries, "Colors");
dataSet.setSliceSpace(3f);
dataSet.setSelectionShift(5f);
dataSet.setColors(ColorTemplate.JOYFUL_COLORS);
PieData data = new PieData(dataSet);
data.setValueTextSize(10f);
data.setValueTextColor(Color.YELLOW);
pieChart.setData(data);
pieChart.invalidate();
如果以上步骤都已经确认,但是饼图仍然不显示,请检查是否没有添加设置 PieChart 数据集和应用这一步骤。