PieChartViewDemoActivity.java

package com.chaychan.powerfulviewlibrary.activity;

import android.graphics.Color;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.animation.Animation;
import android.view.animation.RotateAnimation;
import android.widget.TextView;

import com.chaychan.powerfulviewlibrary.R;
import com.chaychan.viewlib.piechartview.FanItem;
import com.chaychan.viewlib.piechartview.OnFanItemClickListener;
import com.chaychan.viewlib.piechartview.PieChartView;

/**
 * 扇形图控件的demo
 */
public class PieChartViewDemoActivity extends AppCompatActivity {

    private boolean fanRoateAniamtionStart; //true:扇形动画已经进行中
    private PieChartView chartView;
    private TextView tvItem;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_pie_chart_view_demo);

        chartView = (PieChartView) findViewById(R.id.pieChartView);
        tvItem = (TextView) findViewById(R.id.tv_select_item);

        chartView.setFanClickAbleData(
                new double[]{10,20,30,15,25},
                new int[]{Color.GRAY,Color.GREEN, Color.DKGRAY,Color.GREEN,Color.BLUE},0.08);

           chartView.setOnFanClick(new OnFanItemClickListener() {
            @Override
            public void onFanClick(final FanItem fanItem) {
                if (!fanRoateAniamtionStart)
                {
                    if (!fanRoateAniamtionStart)
                    {
                        float to;
                        float centre=(fanItem.getStartAngle() *2+ fanItem.getAngle())/2;
                        if (centre>=270)
                        {
                            to=360-centre+90;
                        }else
                        {
                            to=90-centre;
                        }
//                        RotateAnimation animation= new RotateAnimation(0,to, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
                        RotateAnimation animation= new RotateAnimation(0,to, chartView.getFanRectF().centerX(), chartView.getFanRectF().centerY());
                        animation.setDuration(800);
//                        animation.setInterpolator(new AccelerateInterpolator());
                        animation.setAnimationListener(new Animation.AnimationListener() {
                            @Override
                            public void onAnimationStart(Animation animation) {
                                fanRoateAniamtionStart=true;
                            }

                            @Override
                            public void onAnimationEnd(Animation animation) {
                                chartView.setToFirst(fanItem);
                                chartView.clearAnimation();
                                chartView.invalidate();
                                fanRoateAniamtionStart=false;
                                tvItem.setText("当前选中:"+ fanItem.getPercent() + "%");
                            }

                            @Override
                            public void onAnimationRepeat(Animation animation) {

                            }
                        });
                        animation.setFillAfter(true);
                        chartView.startAnimation(animation);
                    }
                }
            }
        });
    }
}