hellocharts图表插件---饼状图

前期插件那些准备和折线图一样
hellocharts图表插件—折线图 - An_nA的博客 - 优快云博客 http://blog.youkuaiyun.com/an_nal/article/details/76147185
查看了一些大神的帖子，学习了很多：
HelloChart–PieChartView（饼图） - 简书 http://www.jianshu.com/p/1498ac6c9f92

弄出来的效果图为：

不废话，直接上代码了：
1.布局文件：

<?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">

    <lecho.lib.hellocharts.view.PieChartView
        android:id="@+id/piechart"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" >
    </lecho.lib.hellocharts.view.PieChartView>
</LinearLayout>

2.activity代码：

public class PieChartActivity extends AppCompatActivity {

    @BindView(R.id.piechart)
    PieChartView piechart;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_piechart);
        ButterKnife.bind(this);

        //为piechart设置属性
        ViewGroup.LayoutParams layoutParams = piechart.getLayoutParams();
        layoutParams.height = AppUtil.dp2px(this, 180) ;
        layoutParams.width = AppUtil.getScreenWidth(this);
        piechart.setLayoutParams(layoutParams);//设置宽高
        piechart.setViewportCalculationEnabled(true);//设置饼图自动适应大小
        piechart.setChartRotationEnabled(false);//设置饼图是否可以手动旋转

       //实例化PieChartData对象
        final PieChartData  pd = new PieChartData();
        pd.setHasLabelsOutside(false);//设置饼图外面是否显示值
        pd.setHasCenterCircle(true);//设置饼图中间是否有第二个圈
        pd.setCenterCircleColor(getResources().getColor(R.color.colorWhite));//设置饼图中间圈的颜色
        pd.setCenterCircleScale(0.7f);设置第二个圈的大小比例

        Typeface typeface = Typeface.create("typeface", Typeface.BOLD_ITALIC);//设置文本字体,BOLD_ITALIC粗斜体
        pd.setCenterText1Typeface(typeface);
        pd.setCenterText1Color(getResources().getColor(R.color.colorPrimary));
        pd.setCenterText1FontSize(16);
        //pd.setCenterText1("总投诉事项");

        pd.setCenterText2Color(getResources().getColor(R.color.colorRed));
        pd.setCenterText2FontSize(16);

        pd.setValueLabelsTextColor(Color.BLACK);//设置显示值的字体颜色
        //pd.setSlicesSpacing(int sliceSpacing);//设置数据间的间隙
        //pd.setHasLabelsOnlyForSelected(true);//设置当值被选中才显示
        //pd.hasLabelsOutside();
        pd.setHasLabels(false);
        pd.setValueLabelsTextColor(getResources().getColor(R.color.colorWhite));

        //初始化饼图数据 new SliceValue(float value, int color).setLabel(String label)
        final List<SliceValue> sliceList = new ArrayList<SliceValue>();
        for( int i = 1; i <= 10 ; i++){
            sliceList.add(new SliceValue( i,getResources().getColor(R.color.pie_normal)).setLabel( String.valueOf( i) + "没有名字"));
        }
        pd.setValues(sliceList);//为饼图添加数据
        piechart.setPieChartData(pd);//为饼图设置数据

        //将第一个不为0值默认选中()
        SliceValue defaultValue = sliceList.get(0);
        defaultValue.setColor(getResources().getColor(R.color.pie_selected));
        if( defaultValue.getValue() < 0 ){
            pd.setCenterText1("0 没有名字");
            pd.setCenterText2((int) defaultValue.getValue() + "项");
        }else{
            pd.setCenterText1(String.valueOf(defaultValue.getLabel()));
            pd.setCenterText2((int) defaultValue.getValue() + "项");
        }
        piechart.startDataAnimation();

        //为饼图添加触屏相应事件
        piechart.setOnValueTouchListener(new PieChartOnValueSelectListener() {
            @Override
            public void onValueSelected(int i, SliceValue sliceValue) {
                for (int j = 0; j < sliceList.size(); j++) {
                    if (i == j) {
                        sliceList.get(j).setColor(getResources().getColor(R.color.pie_selected));
                    } else {
                        sliceList.get(j).setColor(getResources().getColor(R.color.pie_normal));
                    }
                }
                pd.setCenterText1(String.valueOf(sliceList.get(i).getLabel()));
                pd.setCenterText2((int) sliceList.get(i).getValue() + "项");
                piechart.startDataAnimation();
            }

            @Override
            public void onValueDeselected() {

            }
        });

    }
}