数独小游戏

package com.xhly.shudu;

public class Game {
private final String str = "360000000" + "004230800" + "000004200"
+ "070460003" + "820000014" + "500013020" + "001900000"
+ "007048300" + "000000045";
private int sudoku[] = new int[9 * 9];
private int[][][] used = new int[9][9][];

public Game() {
sudoku = fromPuzzleString(str);
calculateAllUsedTiles();
/*
* for (int i = 0; i < 9; i++) { for (int j = 0; j < 9; j++) { for (int
* j2 = 0; j2 < used[i][j].length; j2++) {
* System.out.println(used[i][j][j2]); } } }
*/
}

public void calculateAllUsedTiles() {
for (int i = 0; i < 9; i++) {
for (int j = 0; j < 9; j++) {
used[i][j] = calculateUsedTiles(i, j);
}
}
}

public int[] getUsedTilesByCoor(int x, int y) {
return used[x][y];
}

public int[] calculateUsedTiles(int x, int y) {
int c[] = new int[9];

for (int i = 0; i < 9; i++) {
if (i == y)
continue;
int t = getTitle(x, i);
if (t != 0)
c[t - 1] = t;
}

for (int i = 0; i < 9; i++) {
if (i == x)
continue;
int t = getTitle(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 + 3; i++) {
for (int j = starty; j < starty + 3; j++) {
if (i == x && j == y)
continue;
int t = getTitle(i, j);
if (t != 0)
c[t - 1] = t;
}
}

int nused = 0;
for (int t : c) {
if (t != 0)
nused++;
}
int c1[] = new int[nused];
nused = 0;
for (int t : c) {
if (t != 0)
c1[nused++] = t;
}
return c1;
}

private int getTitle(int x, int y) {
return sudoku[y * 9 + x];
}

public String getTitleString(int x, int y) {
int v = getTitle(x, y);
if (v == 0) {
return "";
} else {
return String.valueOf(v);
}
}

protected int[] fromPuzzleString(String src) {
int[] sudo = new int[src.length()];
for (int i = 0; i < sudo.length; i++) {
sudo[i] = src.charAt(i) - '0';
}
return sudo;
}

public void setTileCoor(int x,int y,int sel){
sudoku[9*y+x] = sel;
calculateAllUsedTiles();
}
}

package com.xhly.shudu;

import android.app.Activity;
import android.os.Bundle;

import com.xhly.shudu.view.ShuduView;

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(new ShuduView(this));
/*		setContentView(R.layout.activity_main);
*/	}
}

package com.xhly.shudu.view;

import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.view.View;

import com.xhly.shudu.R;

public class KeyDialog extends Dialog {
private final View keys[] = new View[9];
private int[] used;
private ShuduView sv;
public Context context;
private View keypad_cls;
public KeyDialog(Context context, int[] used,ShuduView sv) {
super(context);
this.used = used;
this.sv = sv;
this.context = context;
}

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setTitle("点击输入");
setContentView(R.layout.keypad);
findViewByIds();
for (int i = 0; i < used.length; i++) {
if(used[i]!=0){
keys[used[i]-1].setVisibility(View.INVISIBLE);
}
}
setListeners();
}

public void returnResult(int i){
sv.setSel(i);
dismiss();
}
public void findViewByIds(){
keys[0] = findViewById(R.id.keypad_1);
keys[1] = findViewById(R.id.keypad_2);
keys[2] = findViewById(R.id.keypad_3);
keys[3] = findViewById(R.id.keypad_4);
keys[4] = findViewById(R.id.keypad_5);
keys[5] = findViewById(R.id.keypad_6);
keys[6] = findViewById(R.id.keypad_7);
keys[7] = findViewById(R.id.keypad_8);
keys[8] = findViewById(R.id.keypad_9);
keypad_cls = findViewById(R.id.keypad_cls);
}

private void setListeners() {
for (int i = 0; i < keys.length; i++) {
final int t = i+1;
keys[i].setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
returnResult(t);
}
});
}

keypad_cls.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
returnResult(0);
}
});
}
}

package com.xhly.shudu.view;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.FontMetrics;
import android.view.MotionEvent;
import android.view.View;

import com.xhly.shudu.Game;
import com.xhly.shudu.R;

public class ShuduView extends View {
private float width;
private float height;
private float playWindowHeight;
private Game game;
public Context context;
private int selectX;
private int selectY;
public ShuduView(Context context) {
super(context);
this .context = context;
game = new Game();

}

@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
this.width = w/9f;
this.height = w/9f;
playWindowHeight = w;
super.onSizeChanged(w, h, oldw, oldh);
}

@Override
protected void onDraw(Canvas canvas) {
Paint backgroundPaint = new Paint();
backgroundPaint.setColor(getResources().getColor(R.color.shudu_background));
canvas.drawRect(0, 0, getWidth(), getHeight(), backgroundPaint);

Paint darkPaint = new Paint();
darkPaint.setColor(getResources().getColor(R.color.shudu_dark));

Paint lightPaint = new Paint();
lightPaint.setColor(getResources().getColor(R.color.shudu_light));

Paint hitlePaint = new Paint();
hitlePaint.setColor(getResources().getColor(R.color.shudu_hitle));
for (int i = 0; i < 9; i++) {
canvas.drawLine(0, i*height, getWidth(), i*height , lightPaint);
canvas.drawLine(0, i*height+1, getWidth(), i*height +1, hitlePaint);
canvas.drawLine(i*width, 0, i*width, playWindowHeight, lightPaint);
canvas.drawLine(i*width+1, 0, i*width+1, playWindowHeight, hitlePaint);
}
for (int i= 0; i <= 9; i++) {
if(i%3!=0){
continue;
}
canvas.drawLine(0, i*height, getWidth(), i*height , darkPaint);
canvas.drawLine(0, i*height+1, getWidth(), i*height +1, hitlePaint);
canvas.drawLine(i*width, 0, i*width, playWindowHeight, darkPaint);
canvas.drawLine(i*width+1, 0, i*width+1, playWindowHeight, hitlePaint);
}

Paint numberPaint = new Paint();
numberPaint.setColor(Color.BLACK);
numberPaint.setStyle(Paint.Style.STROKE);
numberPaint.setTextSize(height*0.75f);
numberPaint.setTextAlign(Paint.Align.CENTER);
FontMetrics fm = numberPaint.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.getTitleString(i, j), i*width+x, j*height+y, numberPaint);
}
}
super.onDraw(canvas);
}

@Override
public boolean onTouchEvent(MotionEvent event) {

int action = event.getAction();
if(action!= MotionEvent.ACTION_DOWN){
return super.onTouchEvent(event);
}

float x = event.getX();
float y = event.getY();

if(y>playWindowHeight){
return super.onTouchEvent(event);
}

selectX = (int)(x/width);
selectY = (int)(y/height);

int used[] = game.getUsedTilesByCoor(selectX, selectY);
KeyDialog kd = new KeyDialog(context, used,this);
kd.show();
return true;
}

public void setSel(int i){
game.setTileCoor(selectX, selectY, i);
invalidate();
}
}

<?xml version="1.0" encoding="utf-8"?>
<resources>
<color name="shudu_background">#ffe6f0ff</color>
<color name="shudu_hitle">#ffffffff</color>
<color name="shudu_light">#64c6d4ef</color>
<color name="shudu_dark">#6456648f</color>

</resources>

<?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="wrap_content"
android:orientation="vertical" >

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >

<Button
android:id="@+id/keypad_1"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:text="1" />
<Button
android:id="@+id/keypad_2"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:text="2" />
<Button
android:id="@+id/keypad_3"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:text="3" />

</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >

<Button
android:id="@+id/keypad_4"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:text="4" />
<Button
android:id="@+id/keypad_5"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:text="5" />
<Button
android:id="@+id/keypad_6"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:text="6" />

</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">

<Button
android:id="@+id/keypad_7"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:text="7" />
<Button
android:id="@+id/keypad_8"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:text="8" />
<Button
android:id="@+id/keypad_9"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:text="9" />

</LinearLayout>

<Button
android:id="@+id/keypad_cls"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="清除" />

</LinearLayout>