package com.zhenbao.orange.view;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Rect;
import android.graphics.RectF;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import com.zhenbao.orange.im.R;
import com.zhenbao.orange.utils.LocalStorage;
import com.zhenbao.orange.utils.StoreUtils;
/**
Created by lenovo on 2017/8/11.
*/
public class LuckyPanView extends SurfaceView implements SurfaceHolder.Callback, Runnable {
private SurfaceHolder mHolder;/**
* 与SurfaceHolder绑定的Canvas
*/private Canvas mCanvas;/**
* 用于绘制的线程
*/private Thread t;/**
* 线程的控制开关
*/private boolean isRunning;/**
* 抽奖的文字
*/private String[] mStrs = new String[] { "1", "2", "3", "2000橙币", "礼包1", "礼包2" };/**
* 每个盘块的颜色
*/private int[] mColors = new int[] { 0xFFFFC300, 0xFFF17E01, 0xFFFFC300, 0xFFF17E01, 0xFFFFC300, 0xFFF17E01 };/**
* 与文字对应的图片
*/private int[] mImgs = new int[] { R.mipmap.danfan, R.mipmap.chengbi,
R.mipmap.chengbi, R.mipmap.chengbi, R.mipmap.meizi,
R.mipmap.huafei };/**
* 与文字对应图片的bitmap数组
*/private Bitmap[] mImgsBitmap;/**
* 盘块的个数
*/private int mItemCount = 6;/**
* 绘制盘块的范围
*/private RectF mRange = new RectF();/**
* 圆的直径
*/private int mRadius;/**
* 绘制盘快的画笔
*/private Paint mArcPaint;/**
* 绘制文字的画笔
*/private Paint mTextPaint;/**
* 滚动的速度
*/private double mSpeed;private volatile float mStartAngle = -1;/**
* 是否点击了停止
*/private boolean isShouldEnd;/**
* 控件的中心位置
*/private int mCenter;/**
* 控件的padding，这里我们认为4个padding的值一致，以paddingleft为标准
*/private int mPadding;/**
* 背景图的bitmap
*/private Bitmap mBgBitmap = BitmapFactory.decodeResource(getResources(),
R.mipmap.bg2);/**
* 文字的大小
*/private float mTextSize = TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_SP, 20, getResources().getDisplayMetrics());
StoreUtils mStoreUtils;public LuckyPanView(Context context){ this(context, null);
}public LuckyPanView(Context context, AttributeSet attrs){
super(context, attrs);
mHolder = getHolder();
mHolder.addCallback(this);
mStoreUtils=mStoreUtils.getInstance(context); for (int i=0;i<6;i++){
mStrs[i]= LocalStorage.get("luck_name"+i).toString();
}// getLuckGoods();
// setZOrderOnTop(true);// 设置画布 背景透明
// mHolder.setFormat(PixelFormat.TRANSLUCENT);
setFocusable(true);
setFocusableInTouchMode(true); this.setKeepScreenOn(true);
}private void getLuckGoods(){
mStrs=mStoreUtils.LuckGoods();
}/**
* 设置控件为正方形
*/@Overrideprotected void onMeasure(int widthMeasureSpec, int heightMeasureSpec){ super.onMeasure(widthMeasureSpec, heightMeasureSpec); int width = Math.min(getMeasuredWidth(), getMeasuredHeight()); // 获取圆形的直径
mRadius = width - getPaddingLeft() - getPaddingRight(); // padding值
mPadding = getPaddingLeft(); // 中心点
mCenter = width / 2;
setMeasuredDimension(width, width);
}@Overridepublic void surfaceCreated(SurfaceHolder holder){ // 初始化绘制圆弧的画笔
mArcPaint = new Paint();
mArcPaint.setAntiAlias(true);
mArcPaint.setDither(true); // 初始化绘制文字的画笔
mTextPaint = new Paint();
mTextPaint.setColor(0xFFffffff);
mTextPaint.setTextSize(mTextSize); // 圆弧的绘制范围
mRange = new RectF(getPaddingLeft(), getPaddingLeft(), mRadius
+ getPaddingLeft(), mRadius + getPaddingLeft()); // 初始化图片
mImgsBitmap = new Bitmap[mItemCount]; for (int i = 0; i < mItemCount; i++)
{
mImgsBitmap[i] = BitmapFactory.decodeResource(getResources(),
mImgs[i]);
} // 开启线程
isRunning = true;
t = new Thread(this);
t.start();
}@Overridepublic void surfaceChanged(SurfaceHolder holder, int format, int width, int height){ // TODO Auto-generated method stub}@Overridepublic void surfaceDestroyed(SurfaceHolder holder){ // 通知关闭线程
isRunning = false;
}@Overridepublic void run(){ // 不断的进行draw
while (isRunning)
{ long start = System.currentTimeMillis();
draw(); long end = System.currentTimeMillis(); try
{ if (end - start < 50)
{
Thread.sleep(50 - (end - start));
}
} catch (InterruptedException e)
{
e.printStackTrace();
}
}
}private void draw(){ try
{ // 获得canvas
mCanvas = mHolder.lockCanvas(); if (mCanvas != null)
{ // 绘制背景图
drawBg(); /**
* 绘制每个块块，每个块块上的文本，每个块块上的图片
*/
float tmpAngle = mStartAngle; float sweepAngle = (float) (360 / mItemCount); for (int i = 0; i < mItemCount; i++)
{ // 绘制快快
mArcPaint.setColor(mColors[i]);// mArcPaint.setStyle(Style.STROKE);
mCanvas.drawArc(mRange, tmpAngle, sweepAngle, true,
mArcPaint); // 绘制文本
drawText(tmpAngle, sweepAngle, mStrs[i]); // 绘制Icon
drawIcon(tmpAngle, i);
tmpAngle += sweepAngle;
} // 如果mSpeed不等于0，则相当于在滚动
mStartAngle += mSpeed; // 点击停止时，设置mSpeed为递减，为0值转盘停止
if (isShouldEnd)
{
mSpeed -= 1;
} if (mSpeed <= 0)
{
mSpeed = 0;
isShouldEnd = false; int j=0;// if (j==0) {
// }
j++;
} // 根据当前旋转的mStartAngle计算当前滚动到的区域
}
} catch (Exception e)
{
e.printStackTrace();
} finally
{ if (mCanvas != null)
mHolder.unlockCanvasAndPost(mCanvas);
}
}/**
* 根据当前旋转的mStartAngle计算当前滚动到的区域 绘制背景，不重要，完全为了美观
*/private void drawBg(){
mCanvas.drawColor(0xFFFFFFFF);
mCanvas.drawBitmap(mBgBitmap, null, new Rect(mPadding / 2,
mPadding / 2, getMeasuredWidth() - mPadding / 2,
getMeasuredWidth() - mPadding / 2), null);
}/**
* 根据当前旋转的mStartAngle计算当前滚动到的区域
*
* @param startAngle
*/public String calInExactArea(float startAngle){ int k=0; // 让指针从水平向右开始计算
float rotate = startAngle + 90;
rotate %= 360.0; for (int i = 0; i < mItemCount; i++)
{
k=i; // 每个的中奖范围
float from = 360 - (i + 1) * (360 / mItemCount); float to = from + 360 - (i) * (360 / mItemCount); if ((rotate > from) && (rotate < to))
{
System.out.println("mStrs[i]:="+mStrs[i]); return mStrs[i];
}
} return mStrs[k];
}public String getGood(){
String mess= calInExactArea(mStartAngle);
System.out.println("mess:="+mess); return mess;
}/**
* 绘制图片
*
* @param startAngle
* @param //sweepAngle
* @param i
*/private void drawIcon(float startAngle, int i){ // 设置图片的宽度为直径的1/8
int imgWidth = mRadius / 8; float angle = (float) ((30 + startAngle) * (Math.PI / 180)); int x = (int) (mCenter + mRadius / 2 / 2 * Math.cos(angle)); int y = (int) (mCenter + mRadius / 2 / 2 * Math.sin(angle)); // 确定绘制图片的位置
Rect rect = new Rect(x - imgWidth / 2, y - imgWidth / 2, x + imgWidth
/ 2, y + imgWidth / 2);
mCanvas.drawBitmap(mImgsBitmap[i], null, rect, null);
}/**
* 绘制文本
*
* @param //rect
* @param startAngle
* @param sweepAngle
* @param string
*/private void drawText(float startAngle, float sweepAngle, String string){
Path path = new Path();
path.addArc(mRange, startAngle, sweepAngle); float textWidth = mTextPaint.measureText(string); // 利用水平偏移让文字居中
float hOffset = (float) (mRadius * Math.PI / mItemCount / 2 - textWidth / 2);// 水平偏移
float vOffset = mRadius / 2 / 6;// 垂直偏移
mCanvas.drawTextOnPath(string, path, hOffset, vOffset, mTextPaint);
}/**
* 点击开始旋转
*
* @param luckyIndex
*/public void luckyStart(int luckyIndex){ // 每项角度大小
float angle = (float) (360 / mItemCount); // 中奖角度范围（因为指针向上，所以水平第一项旋转到指针指向，需要旋转210-270；）
float from = 270 - (luckyIndex + 1) * angle; float to = from + angle; // 停下来时旋转的距离
float targetFrom = 4 * 360 + from; /**
* <pre>
* (v1 + 0) * (v1+1) / 2 = target ;
* v1*v1 + v1 - 2target = 0 ;
* v1=-1+(1*1 + 8 *1 * target)/2;
* </pre>
*/
float v1 = (float) (Math.sqrt(1 * 1 + 8 * 1 * targetFrom) - 1) / 2; float targetTo = 4 * 360 + to; float v2 = (float) (Math.sqrt(1 * 1 + 8 * 1 * targetTo) - 1) / 2;
mSpeed = (float) (v1 + Math.random() * (v2 - v1));
isShouldEnd = false;
}public void luckyEnd(){
mStartAngle = 0;
isShouldEnd = true;
}public boolean isStart(){ return mSpeed != 0;
}public boolean isShouldEnd(){ return isShouldEnd;
}public double isStop(){ return mSpeed;
}}
//思路
//调用
<com.xxxx.xxxx.view.LuckyPanViewVip
android:id="@+id/id_luckypan_vip" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_margin="13dp" />
@BindView(R.id.id_luckypan_vip)//
LuckyPanViewVip mLuckyPanView;@BindView(R.id.id_start_btn_vip)ImageView mStartBtn;
if (!mLuckyPanView.isStart()) {
mStartBtn.setImageResource(R.mipmap.stop); int luck=LuckRate();
mLuckyPanView.luckyStart(luck);
mLuckyPanView.luckyEnd(); new Handler().postDelayed(new Runnable() { @Override
public void run() {
Toast.show(RaffleVipActivity.this,"恭喜抽中 ："+mLucy.get(luck).getLuck_name());
}
},3000);
}
随时随地看视频
