Android作品设计.doc

荆楚理工学院课程设计成果 学院:计算机工程学院 班级: 14级计算机科学与技术（5）班 学生姓名: 余紫馨 学号: 2014404010212 设计地点（单位）：D5-303 设计题目:幸运大转盘 完成日期： 2016 年 5 月 31 日 指导教师评语:_ _成绩(五级记分制): 教师签名: 一、概述 如今移动手持设备发展速度越来越快，支持功能越来越多。不少的PC应用被移植到手持设备上来，这也为很多用户带来了相当多的方便。尤其是在商品的销售方面，各种扫码或抽奖活动都成了促销的必不可少的方式之一。毋庸置疑，APP应用程序“幸运大转盘”也成为大多数消费者的装机必备。2、 开发环境1、jdk1.8.0_65，jre1.8.0_652、Eclipse 4.53、ADT4、SDK3、 详细设计 1、作品介绍 “幸运大转盘”应用程序主要是当点击APP应用程序时，即触发点击“开始抽奖STRT”事件，转盘开始转动，当第二次点击界面时，程序执行“停止抽奖STOP”事件，指针随机指向转盘中以添加的图片。 2、模块设计 该应用程序主要有三个小模块设计，即图片导入，创建对象Rotate.java主活动点击事件以及页面布局。 具体实现： 图片导入：新建“Android Application Project”并命名为“Surface”，在其目录“res”下的文件“drawable_hdip”中导入所用的图片。 MainActivity活动：通过创建窗体、以360作为基准界面创建随机函数，实现转盘的随机指向目的。 页面布局：采用相对布局实现页面的布局。4、 具体代码 MainActivity代码：package com.anna.surfaceview;import com.iflytek.voiceads.AdError;import com.iflytek.voiceads.AdKeys;import com.iflytek.voiceads.IFLYAdListener;import com.iflytek.voiceads.IFLYAdSize;import com.iflytek.voiceads.IFLYFullScreenAd;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.view.Window;import android.widget.ImageView;import android.widget.Toast;public class MainActivity extends Activity private Rotate rotate;private ImageView start_btn;Overrideprotected void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);createAd();setContentView(R.layout.activity_main);rotate = (Rotate) this.findViewById(R.id.rotate);start_btn = (ImageView) this.findViewById(R.id.start_btn);start_btn.setOnClickListener(new OnClickListener() Overridepublic void onClick(View v) if(!rotate.isRuning()rotate.luckyStart(2);start_btn.setImageResource(R.drawable.stop);elseif (!rotate.isShoundEnd() rotate.luckyEnd();start_btn.setImageResource(R.drawable.start););private IFLYFullScreenAd ad;private void createAd() ad = IFLYFullScreenAd.createFullScreenAd(this,4C85AAE75D338543F9B2792E2EF8A190);ad.setAdSize(IFLYAdSize.FULLSCREEN);ad.setParameter(AdKeys.SHOW_TIME_FULLSCREEN, 6000);ad.setParameter(AdKeys.DOWNLOAD_ALERT, true);Rotate.java代码：package com.anna.surfaceview;import java.util.Random;import com.anna.surfaceview.R;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.SurfaceHolder.Callback;import android.view.SurfaceView;public class Rotate extends SurfaceView implements Callback, Runnableprivate SurfaceHolder mHolder;private Canvas canvas;private Thread t;private boolean isRunning;private String strs=new String;private int images=new intR.drawable.danfan,R.drawable.ipad,R.drawable.xialian,R.drawable.iphone,R.drawable.meizi,R.drawable.xialian;private int colors=new int0xFFFFC300,0xFFF17E01,0xFFFFC300,0xFFF17E01,0xFFFFC300,0xFFF17E01;private int itemCount=6;private Bitmap bitmap;private RectF mRange = new RectF();private int mRadius;private Paint mArcPaint;private Paint mTextPanit;private double mSpeed = 0;private volatile float mStartAngle = 0;private boolean isShouldEnd;private int mCenter;private int mPadding;private Bitmap mBgBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.bg2);private float mTextSize = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, 20, getResources().getDisplayMetrics();public Rotate(Context context) this(context, null);public Rotate(Context context, AttributeSet attrs) super(context, attrs);mHolder = getHolder();mHolder.addCallback(this);setFocusable(true);setFocusableInTouchMode(true);setKeepScreenOn(true);Overrideprotected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) super.onMeasure(widthMeasureSpec, heightMeasureSpec);int width = Math.min(getMeasuredWidth(), getMeasuredHeight();mPadding = getPaddingLeft();System.out.println(=mPadding=+mPadding);mRadius = width - mPadding * 2;mCenter = width / 2;setMeasuredDimension(width, width);Overridepublic void surfaceCreated(SurfaceHolder holder) mArcPaint = new Paint();mArcPaint.setAntiAlias(true);mArcPaint.setDither(true);mTextPanit = new Paint();mTextPanit.setColor(0xffffffff);mTextPanit.setTextSize(mTextSize);mRange = new RectF(mPadding, mPadding, mPadding+mRadius, mPadding+mRadius);bitmap = new BitmapitemCount;for (int i = 0; i itemCount; i+) bitmapi = BitmapFactory.decodeResource(getResources(), imagesi);isRunning = true;t = new Thread(this);t.start();Overridepublic void surfaceChanged(SurfaceHolder holder, int format, int width,int height) Overridepublic void surfaceDestroyed(SurfaceHolder holder) isRunning = false;Overridepublic void run() while (isRunning) long start = System.currentTimeMillis();draw();long end = System.currentTimeMillis();if(end-start50)try Thread.sleep(50-(end-start); catch (InterruptedException e) e.printStackTrace();private void draw() try canvas = mHolder.lockCanvas();if (canvas != null) drawBg();float tmpAngle = mStartAngle;float sweepAngle = 360/itemCount;for (int i = 0; i itemCount; i+) mArcPaint.setColor(colorsi);canvas.drawArc(mRange, tmpAngle, sweepAngle, true, mArcPaint);drawText(tmpAngle,sweepAngle,strsi);drawIcon(tmpAngle,bitmapi);tmpAngle += sweepAngle;mStartAngle += mSpeed;if(isShouldEnd)mSpeed -=1;if(mSpeed=0)mSpeed = 0;isShouldEnd = false; catch (Exception e) e.printStackTrace(); finally if (canvas != null) mHolder.unlockCanvasAndPost(canvas);public void luckyStart(int i)float angle = 360/itemCount;float from = 270-(i+1)*angle;float end = from+angle;float targetFrom = 4*360 + from;float targetEnd = 4*360 + end;float v1= (float) (-1+Math.sqrt(1+8*targetFrom)/2);float v2= (float) (-1+Math.sqrt(1+8*targetEnd)/2);mSpeed = v1+Math.random()*(v2-v1);isShouldEnd = false;public void luckyEnd()mStartAngle = 0;isShouldEnd = true;public boolean isRuning()return mSpeed != 0;public boolean isShoundEnd()return isShouldEnd;private void drawIcon(float tmpAngle, Bitmap bitmap) int imgWidth = mRadius/8;float angle = (float) (tmpAngle+360/itemCount/2)*Math.PI/180);int x = (int) (mCenter+mRadius/2/2*Math.cos(angle);int y = (int) (mCenter+mRadius/2/2*Math.sin(angle);Rect rect = new Rect(x-imgWidth/2, y-imgWidth/2, x+imgWidth/2, y+imgWidth/2);canvas.drawBitmap(bitm