1、单点触摸事件
public boolean onTouchEvent(MotionEvent event){
//获取事件的种类
event.getAction();
//获取点击的坐标
event.getX();
event.getY();
}
2、碰撞检测
通用方法：检测用户点击的位置，判断这个点击点是否在矩形框内？
判断用户点击的位置在具体哪个格子里？？
点击的点得坐标除以高度，宽度，得到在哪一个单元格里
3可用数据计算
源代码：
Game.java文件：
package com.example.shudu03;
public class Game {
private final String str="360000000"+"004230800"
+"000004200"+"070460003"+"820000014"+"500013020"
+"001900000"+"007048300"+"000000045";
private int shuduku[]=new int[9*9];
//用于存储每个单元格已经不可用的数据
private int used[][][]=new int[9][9][];
public Game() {
shuduku=formPuzzleString(str);
getAllUsed();
}
//根据九宫格的坐标，返回该坐标所引该填写数据
private int getTile(int x,int y){
return shuduku[y*9+x];
}
//将九宫格坐标的数字转化为String类型
public String getTileString(int x,int y){
int v=getTile(x,y);
if(v==0){
return "";
}
else{
return String.valueOf(v);
}
}
protected int[] formPuzzleString(String str){
int[] shudu=new int[str.length()];
for(int i=0;i<shudu.length;i++){
shudu[i]=str.charAt(i)-'0';
}
return shudu;
}
//得到某个单元格已经用过的数据
public int[] getUsed(int x,int y){
int c[]=new int[9];
for(int i=0;i<9;i++){
if(i==x){
continue;
}
int t=getTile(x,i);
if(t!=0){
c[t-1]=t;
}
}
for(int i=0;i<9;i++){
if(i==x){
continue;
}
int t=getTile(i,y);
if(t!=0){
c[t-1]=t;
}
}
int startx=(x/3)*3;
int starty=(y/3)*3;
for(int i=startx;i<startx;i++){
for(int j=starty;j<starty+3;j++){
if(i==x&&j==y){
continue;
}
int t=getTile(i,j);
if(t!=0){
c[t-1]=t;
}
}
}
int rused=0;
for(int i:c){
if(i!=0)
rused++;
}
int c1[]=new int[rused];
rused=0;
for(int j:c){
if(j!=0){
c1[rused++]=j;
}
}
return c1;
}
//得到每一个单元格已经用过的数据
public void getAllUsed(){
for(int x=0;x<9;x++){
for(int y=0;y<9;y++){
used[x][y]=getUsed(x,y);
}
}
}
//根据used数组得到某个单元格已经用过的数据
public int[] getUsedByArray(int x,int y){
return used[x][y];
}
}
MyView.java文件：
package com.example.shudu03;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Paint.FontMetrics;
import android.view.MotionEvent;
import android.view.View;
public class MyView extends View {
public MyView(Context context) {
super(context);
}
private float width;
private float height;
private Game game=new Game();
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
this.width=w/9f;
this.height=h/9f;
super.onSizeChanged(w, h, oldw, oldh);
}
@Override
protected void onDraw(Canvas canvas) {
//画背景
Paint paintBackgroud=new Paint();
paintBackgroud.setColor(getResources().getColor(R.color.backgroundColor));
canvas.drawRect(0, 0, getWidth(), getHeight(), paintBackgroud);
//画第一条颜色重的线的画笔
Paint paintOne=new Paint();
paintOne.setColor(getResources().getColor(R.color.oneLine));
//画第二条颜色轻的线的画笔
Paint paintTwo=new Paint();
paintTwo.setColor(getResources().getColor(R.color.twoLine));
//画颜色重的线
Paint paintThree=new Paint();
paintThree.setColor(getResources().getColor(R.color.threeLine));
for(int i=0;i<9;i++){
canvas.drawLine(0, i*height, getWidth(), i*height, paintOne);
canvas.drawLine(0, i*height+1, getWidth(), i*height+1, paintTwo);
canvas.drawLine(i*width, 0, i*width, getHeight(), paintOne);
canvas.drawLine(i*width+1, 0, i*width+1, getHeight(), paintTwo);
}
for(int i=0;i<9;i++){
if(i%3 != 0){
continue;
}
canvas.drawLine(0, i*height, getWidth(), i*height, paintThree);
canvas.drawLine(0, i*height+1, getWidth(), i*height+1, paintTwo);
canvas.drawLine(i*width, 0, i*width, getHeight(),paintThree);
canvas.drawLine(i*width+1, 0, i*width+1, getHeight(), paintTwo);
}
//画数字的画笔
Paint paintData=new Paint();
paintData.setColor(getResources().getColor(R.color.textColor));
paintData.setStyle(Paint.Style.STROKE);
paintData.setTextSize((float) (height*0.75));
paintData.setTextAlign(Paint.Align.CENTER);
FontMetrics fm=paintData.getFontMetrics();
float x=width/2;
float y=height/2-(fm.ascent+fm.descent)/2;
for(int i=0;i<9;i++){
for(int j=0;j<9;j++){
canvas.drawText(game.getTileString(i,
j), i*width+x, j*height+y, paintData);
}
}
super.onDraw(canvas);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if(event.getAction()!=event.ACTION_DOWN){
return super.onTouchEvent(event);
}
int selectedx=(int)(event.getX()/width);
int selectedy=(int)(event.getY()/height);
int used[]=game.getUsedByArray(selectedx, selectedy);
for(int i=0; i<used.length;i++)
System.out.println(used[i]);
return true;
}
}
