public class Circle { public int x; public int y; public int radio; public int color; public boolean isSelect; //用来作为个人标示使用 public int number;}
package view;
import android.content.Context;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.util.AttributeSet;import android.view.MotionEvent;import android.view.View;import android.widget.Toast;import java.util.ArrayList;import java.util.List;/** * Created by Administrator on 2017/1/13. */public class Sudoku extends View { //画笔颜色 public final static int Before_Color=Color.parseColor("#000000"); //画之后的颜色 public final static int After_Color=Color.parseColor("#ff0000"); //点的集合 List<Circle> circleList=new ArrayList<>(); //线的集合 List<Circle> lineList=new ArrayList<>(); PRivate int width; private int height; private int radio; Paint paint; public Sudoku(Context context) { super(context); } public Sudoku(Context context, AttributeSet attrs) { super(context, attrs); } public Sudoku(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); width=getWidth(); height=getHeight(); //如果宽或高为0，则无意义 if (height==0||width==0){ return; } //得到半径，把宽平均分为10份 radio=width/10; addList(); Circle(canvas); } @Override public boolean onTouchEvent(MotionEvent event) { switch (event.getAction()){ case MotionEvent.ACTION_DOWN: break; case MotionEvent.ACTION_MOVE: move(event); break; case MotionEvent.ACTION_UP: up(); break; } return true; } public void move(MotionEvent event){ int x= (int) event.getX(); int y= (int) event.getY(); for (int i = 0; i < circleList.size(); i++) { //xx x的平法 int xx= (int) Math.pow((x-circleList.get(i).x),2); int yy= (int) Math.pow((y-circleList.get(i).y),2); int sum=xx+yy; //点击在园内 if (sum<=Math.pow(radio,2)){ //将状态设置为选中 circleList.get(i).isSelect=true; //滑动时改变画笔颜色 circleList.get(i).color=After_Color; //设置判断避免重复 boolean isFlag=false; for (int j = 0; j < lineList.size(); j++) { //通过数字判断存在不存在 if (lineList.get(j).number==circleList.get(i).number) { isFlag=true; } } //如果不存在就加入 if (isFlag==false){ Circle circle=new Circle(); circle.x=circleList.get(i).x; circle.y=circleList.get(i).y; circle.color=circleList.get(i).color; circle.number=circleList.get(i).number; lineList.add(circle); } //同时刷新ui postInvalidate(); } } } public void up(){ String passWord=""; for (int i = 0; i < lineList.size(); i++) { password+=lineList.get(i).number+""; } Toast.makeText(getContext(),"当前密码是"+password,Toast.LENGTH_LONG).show(); //清理屏幕 for (int i = 0; i < circleList.size(); i++) { circleList.get(i).color=Before_Color; circleList.get(i).isSelect=false; } //清空 lineList.clear(); //刷新 postInvalidate(); } public void addList(){ for (int i = 1; i <=9 ; i++) { Circle cirle=new Circle(); //当i<=3时，画第一排三个点的纵坐标相同 if (i<=3){ //当i<=3时，画第一排三个点的横坐标相同 cirle.y=height/2-radio*3; }else if (i>3 && i<=6){ //当i>3&&i<6时，画第二排三个点的纵坐标相同 cirle.y=height/2; }else { //画第三排的圆 cirle.y=height/2+radio*3; } //i==1、4、7每个圆的横坐标相同 if (i==1||i==4||i==7){ cirle.x=radio*2; }else if (i==2||i==5||i==8){ cirle.x=radio*5; }else{ cirle.x=radio*8; } //把点和半径存入集合 cirle.radio=radio; //默认点的颜色为黑色 cirle.color=Before_Color; //默认所有点不选中 cirle.isSelect=false; //把点的数量页作为属性存入集合 cirle.number=i; //把点装入集合 circleList.add(cirle); } } //绘制圆 public void Circle(Canvas canvas) { //实例化画笔 paint=new Paint(); paint.setStrokeWidth(3); paint.setAntiAlias(true); paint.setStyle(Paint.Style.STROKE); //循环点的集合,然后画圆 for (int i = 0; i < circleList.size(); i++) { //设置画圆的颜色 paint.setColor(circleList.get(i).color); //绘制圆 canvas.drawCircle(circleList.get(i).x,circleList.get(i).y,circleList.get(i).radio,paint); } boolean isFirst=false; int startX=0; int startY=0; //划线的方法 for (int i = 0; i < lineList.size(); i++) { if (isFirst==false){ isFirst=true; startX=lineList.get(i).x; startY=lineList.get(i).y; }else{ paint.setColor(lineList.get(i).color); canvas.drawLine(startX,startY,lineList.get(i).x,lineList.get(i).y,paint); startX=lineList.get(i).x; startY=lineList.get(i).y; } } }}
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent"> <view.Sudoku android:layout_width="match_parent" android:layout_height="match_parent" /></LinearLayout>
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