android 蛋糕图

</pre><pre name="code" class="java">package com.example.getpath;import java.util.ArrayList;import java.util.List;import android.annotation.SuppressLint;import android.content.Context;import android.content.res.TypedArray;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.Rect;import android.graphics.RectF;import android.os.Handler;import android.util.AttributeSet;import android.util.Log;import android.view.View;/** * @author zlz * @time 2016/7/27 * @version 1.0s * @description : android 自定义 蛋糕图 *  **/public class ViewForCake extends View {// view相关private Context context;private RectF oval;private TypedArray tyStyle;// xml属性private int width, height;// 宽高private int padingwidth;// pading值 同时 也是 圆和右边详情的距离private int circleWidth;// 圆的直径private int currangle = 0;private int zlz = 0;// 数据相关private List<Data> datalist = new ArrayList<Data>();private float total = 0;private float[] angle;public ViewForCake(Context context) {this(context, null);}public ViewForCake(Context context, AttributeSet attrs) {this(context, attrs, 0);}public ViewForCake(Context context, AttributeSet attrs, int defStyleAttr) {super(context, attrs, defStyleAttr);this.context = context;padingwidth = px2dip(context, 20);oval = new RectF();tyStyle = context.obtainStyledAttributes(attrs, R.styleable.ViewForTurn);init();}@Overrideprotected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {super.onMeasure(widthMeasureSpec, heightMeasureSpec);height = View.MeasureSpec.getSize(heightMeasureSpec);width = View.MeasureSpec.getSize(widthMeasureSpec);circleWidth = width / 3 * 2 - padingwidth * 2;setMeasuredDimension(width, height);oval.left = padingwidth; // 左边oval.top = padingwidth; // 上边oval.right = circleWidth + padingwidth; // 右边oval.bottom = circleWidth + padingwidth; // 下边handler.postDelayed(runnable, 500);}private void init() {}@SuppressLint("NewApi")@Overrideprotected void onDraw(Canvas canvas) {Log.e("zlz", "onDraw");super.onDraw(canvas);Paint paint1 = new Paint();paint1.setStrokeWidth(30);paint1.setStyle(paint1.getStyle().FILL);paint1.setStrokeCap(Paint.Cap.ROUND);paint1.setColor(Color.WHITE);angle = new float[datalist.size()];total = 0;for (int i = 0; i < datalist.size(); i++) {total = total + datalist.get(i).getDetial();angle[i] = total;}for (int i = 0; i < currangle; i++) {for (int j = 1; j < angle.length; j++) {if (i < angle[0] / total * 360){paint1.setColor(Color.RED);}if (i < angle[j] / total * 360 && i > angle[j - 1] / total * 360) {Log.e("zlz", "i:" + i);int color = 111111 * j * 2 + j * 1000;String strColor = "#" + String.valueOf(color);paint1.setColor(Color.parseColor(strColor));}}canvas.drawArc(oval, -90 + i, 3, true, paint1);}Paint paint = new Paint();paint.setStrokeWidth(10);paint.setStyle(paint1.getStyle().FILL);paint.setColor(Color.WHITE);canvas.drawLine(circleWidth / 2 + padingwidth, padingwidth, circleWidth / 2 + padingwidth,circleWidth / 2 + padingwidth, paint);if (currangle < angle[0] / total * 360) {canvas.rotate(currangle, circleWidth / 2 + padingwidth, circleWidth / 2 + padingwidth);canvas.drawLine(circleWidth / 2 + padingwidth, padingwidth, circleWidth / 2 + padingwidth,circleWidth / 2 + padingwidth, paint);canvas.rotate(-currangle, circleWidth / 2 + padingwidth, circleWidth / 2 + padingwidth);} else {canvas.rotate(angle[0] / total * 360, circleWidth / 2 + padingwidth, circleWidth / 2 + padingwidth);canvas.drawLine(circleWidth / 2 + padingwidth, padingwidth, circleWidth / 2 + padingwidth,circleWidth / 2 + padingwidth, paint);canvas.rotate(-(angle[0] / total * 360), circleWidth / 2 + padingwidth, circleWidth / 2 + padingwidth);}for (int i = 0; i < datalist.size(); i++) {Rect _rect = new Rect();int _leftX = padingwidth * 3 + circleWidth;int _leftY = padingwidth + px2dip(context, 20) * i;int _bottomX = padingwidth * 3 + circleWidth + px2dip(context, 20);int _bottomY = padingwidth + px2dip(context, 20) * i + px2dip(context, 10);_rect.set(_leftX, _leftY, _bottomX, _bottomY);if (i == 0) {paint.setColor(Color.RED);} else {int color = 111111 * i * 2 + i * 1000;String strColor = "#" + String.valueOf(color);paint.setColor(Color.parseColor(strColor));}canvas.drawRect(_rect, paint);paint.setTextSize(px2dip(context, 10));canvas.drawText(datalist.get(i).getName(), padingwidth * 3 + circleWidth + px2dip(context, 30),padingwidth + px2dip(context, 25) * i, paint);}for (int i = 0; i < datalist.size(); i++) {float _turn;if (!(i == 0)) {_turn = (angle[i] / total * 360 - (angle[i - 1] / total * 360)) / 2 + (angle[i - 1] / total * 360);} else {_turn = angle[i] / total * 360 / 2;}if (currangle > _turn) {if (i == 0) {paint.setColor(Color.RED);} else {int color = 111111 * i * 2 + i * 1000;String strColor = "#" + String.valueOf(color);paint.setColor(Color.parseColor(strColor));}if (i == datalist.size() - 1) {canvas.rotate(_turn, padingwidth + circleWidth / 2, padingwidth + circleWidth / 2);canvas.drawText((int) ((datalist.get(i).getDetial() / total) * 100 + 1) + "%",padingwidth + circleWidth / 2, padingwidth - px2dip(context, 10), paint);canvas.rotate(-_turn, padingwidth + circleWidth / 2, padingwidth + circleWidth / 2);} else {canvas.rotate(_turn, padingwidth + circleWidth / 2, padingwidth + circleWidth / 2);canvas.drawText((int) ((datalist.get(i).getDetial() / total) * 100) + "%",padingwidth + circleWidth / 2, padingwidth - px2dip(context, 10), paint);canvas.rotate(-_turn, padingwidth + circleWidth / 2, padingwidth + circleWidth / 2);}}}}/** * @Description:设置蛋糕的分块 * @Parameters:上送一个Date()类型的List */public void setData(List<Data> pList) {List<Data> List = pList;for (int i = 0; i < List.size() - 1; i++) {for (int j = 0; j < List.size() - i - 1; j++) {if (List.get(j).getDetial() < List.get(j + 1).getDetial()) {Data temp;temp = List.get(j + 1);List.remove(j + 1);List.add(j + 1, List.get(j));List.remove(j);List.add(j, temp);}}}datalist = List;}// 转成dppublic static int px2dip(Context context, float pxValue) {final float scale = context.getResources().getDisplayMetrics().density;int zlz = (int) (pxValue / scale + 0.5f);return (int) (pxValue * scale + 0.5f);}Handler handler = new Handler();Runnable runnable = new Runnable() {@Overridepublic void run() {// TODO Auto-generated method stubinvalidate();currangle = currangle + 1;handler.postDelayed(runnable, 100);if (currangle > 356) {handler.removeCallbacks(runnable);}}};}

android 蛋糕图奉上 ：使用时请自行封装Data 类 里面有 String  name 和  float Datil 连个字段 并且在activity 中请 给控件setdata 不然会蹦