笔记-Android开发视频教程《游戏数独》 - 好知网-重拾学习乐趣-Powered By Howzhi

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千锋3G学院-Android游戏开发教程-数独-第2讲的笔记

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by 小风筝0010 0 0
千锋3G学院-Android游戏开发教程-数独-第7讲的笔记

public class MyDialog extends Dialog { private final View[] keys = new View[9]; private final int[] used;public MyDialog(Context context, int[] used) { super(context); this.used = used; }// Dialog第一次显示时调用onCreate方法; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // 设置Dialog的标题和布局文件; setTitle("KeyDialog"); setContentView(R.layout.dialog); // 调用这个方法取得封装的Button控件; findViews(); //遍历整个used数组，得到不可用的数据; for (int i = 0; i < used.length; i++) { if (used[i] != 0) { //根据used得到的数据，把可以用的数据赋值给Button控件， //设置keys数组里的按钮是否可见，INVISIBLE参数为不可见; keys[used[i]-1].setVisibility(View.INVISIBLE); } }}private void findViews() { keys[0] = findViewById(R.id.NO1); keys[1] = findViewById(R.id.NO2); keys[2] = findViewById(R.id.NO3); keys[3] = findViewById(R.id.NO4); keys[4] = findViewById(R.id.NO5); keys[5] = findViewById(R.id.NO6); keys[6] = findViewById(R.id.NO7); keys[7] = findViewById(R.id.NO8); keys[8] = findViewById(R.id.NO9); }} 注意：TableLayout 下的android:stretchColumns属性:设置可伸展的列。该列可以向行方向伸展，最多可占据一整行。控制Dialog的宽度。

by 福尔摩斯的烟斗 0 0
千锋3G学院-Android游戏开发教程-数独-第6讲的笔记

//可以分成2大块来看!!! //1、第一块是创建View，把自定义的布局文件转换成View对象; LayoutInflater layout = LayoutInflater.from(this.getContext()); View layoutView = layout.inflate(R.layout.dialog, null); TextView textView = (TextView) layoutView.findViewById(R.id.textID); textView.setText(sb.toString()); //2、创建Dialog对象并把设置好的View填充进去; AlertDialog.Builder builder = new AlertDialog.Builder(this.getContext()); builder.setView(layoutView); AlertDialog dialog = builder.create(); dialog.show();

by 福尔摩斯的烟斗 0 0
千锋3G学院-Android游戏开发教程-数独-第5讲的笔记

//取出不可用的数据; public int[] getUsedTilesByCoor(int x, int y){ return used[x][y]; } //计算单元格中不可用的数据; public int[] calculateUsedTiles(int x, int y){ int [] c = new int[9]; //计算Y轴方向不可用数据; for(int i = 0; i < 9; i ++){ if( i == y ){ continue; } int t = getTile(x,i); if(t!=0){ c[t-1]=t; } } //计算X轴方向不可用数据： for(int i = 0; i < 9 ; i++){ if(i == x){ continue; } int t = getTile(i,y); if(t != 0){ c[t-1] = t; } } //计算小九宫格不可用数据; 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 = getTile(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; } //获取屏幕点击的焦点 @Override public boolean onTouchEvent(MotionEvent event) { if(event.getAction() != MotionEvent.ACTION_DOWN){ return super.onTouchEvent(event); } int selectedX = (int)(event.getX()/width); int selectedY = (int)(event.getY()/height); int used[] = game.getUsedTilesByCoor(selectedX, selectedY); for(int i = 0 ; i < used.length ; i++){ System.out.println(used[i]); } return true; }

by 福尔摩斯的烟斗 0 0
千锋3G学院-Android游戏开发教程-数独-第4讲的笔记

public class Game { private final String str = "360000000004230800000004200"+ "070460003820000014500013020"+ "001900000007048300000000045"; private int [] soduku = new int [9*9]; public Game(){ soduku = fromPuzzleString(str); }// 根据9宫格的坐标，返回坐标的格子中的数据; private int getTile(int x, int y){ return soduku[y* 9 + x]; } public String getTileString(int x, int y){ int v = getTile(x,y); if(v == 0){ return ""; }else{ return String.valueOf(v); } } protected int[] fromPuzzleString(String src){ int[] sudo = new int[str.length()]; for(int i = 0;i < sudo.length;i++){ sudo[i] = str.charAt(i) - '0'; } return sudo; }} //画字体 Paint textpaint = new Paint(); textpaint.setColor(Color.BLACK); textpaint.setStyle(Paint.Style.STROKE); textpaint.setTextSize(height * 0.75f); textpaint.setTextAlign(Paint.Align.CENTER); textpaint.setAntiAlias(true); //计算字体大小 FontMetrics fm = textpaint.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(new Game().getTileString(i, j), i * width + x,j * height + y, textpaint); } }

by 福尔摩斯的烟斗 0 0
千锋3G学院-Android游戏开发教程-数独-第3讲的笔记

Paint paint = new Paint(); paint.setColor(Color.BLACK); // 设置画笔透明度以及RGB属性1、a(透明度)1~255越小越透明。2、R(红色)0~255越小越淡。3、G(绿色) // 0~255。4、B(蓝色)0~255。 paint.setARGB(200, 5, 100, 230); // 设置抗锯齿注：设置这个属性后会消耗大量资源，绘制图形时会变慢。 paint.setAntiAlias(true); // 设置画笔的大小，也就是粗细。 paint.setStrokeWidth(1); // 设置画笔的样式。1、STROKE：空心图不填充颜色， paint.setStyle(Style.STROKE); // 绘制矩形，1、左边界的位置，2、上边界的位置，3、有边界的位置，4、下边界的位置。 paint.setTextSize(100); canvas.drawRect(200, 100, 300, 400, paint); // 绘制一条线，前俩个参数是x,y的起始位置的坐标，后俩个是x,y的终止位置的坐标。 canvas.drawLine(100, 100, 400, 400, paint); // 绘制圆形，前两个是圆心 x,y坐标，radius：是圆的半径。 canvas.drawCircle(200, 200, 50, paint); canvas.drawText("appde", 150, 300, paint); canvas.drawBitmap(BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher),300,100,paint); Paint backgroundpaint = new Paint(); backgroundpaint.setColor(getResources().getColor( R.color.BackgroundColor)); canvas.drawRect(0, 0, getWidth(), getHeight(), backgroundpaint);Paint blackpaint = new Paint(); blackpaint.setColor(getResources().getColor(R.color.black));Paint strikingpaint = new Paint(); strikingpaint.setColor(getResources().getColor(R.color.Striking));Paint brightpaint = new Paint(); brightpaint.setColor(getResources().getColor(R.color.Bright));for (int i = 0; i < 9; i++) { canvas.drawLine(0, i * height, getWidth(), i * height, strikingpaint); canvas.drawLine(0, i * height + 1, getWidth(), i * height + 1, brightpaint); canvas.drawLine(i * width, 0, i * width, getHeight(), strikingpaint); canvas.drawLine(i * width + 1, 0, i * width + 1, getHeight(), brightpaint); } for (int i = 0; i < 9; i++) { if (i % 3 != 0) { continue; } canvas.drawLine(0, i * height, getWidth(), i * height, blackpaint); canvas.drawLine(0, i * height + 1, getWidth(), i * height + 1, brightpaint); canvas.drawLine(i * width, 0, i * width, getHeight(), blackpaint); canvas.drawLine(i * width + 1, 0, i * width + 1, getHeight(), brightpaint); }Paint textpaint = new Paint(); textpaint.setColor(Color.BLACK); textpaint.setStyle(Paint.Style.STROKE); textpaint.setTextSize(height * 0.75f); textpaint.setTextAlign(Paint.Align.CENTER); float x = width / 2; canvas.drawText("1", 3 * width + x, 61, textpaint);

by 福尔摩斯的烟斗 0 0
千锋3G学院-Android游戏开发教程-数独-第6讲的笔记

1、对话框的使用方法 2、自定义对话框的方法 3、在对话框当中显示候选的数字 MyView.java文件：package com.example.shudu03;import android.app.AlertDialog;import android.content.Context;import android.graphics.Canvas;import android.graphics.Paint;import android.graphics.Paint.FontMetrics;import android.view.LayoutInflater;import android.view.MotionEvent;import android.view.View;import android.widget.TextView;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); StringBuffer result=new StringBuffer(0); for(int i=0; i<used.length;i++){ System.out.println(used[i]); result=result.append(String.valueOf(used[i])); } LayoutInflater layoutInflater=LayoutInflater.from(this.getContext()); View layout=layoutInflater.inflate(R.layout.dialog, null); TextView textView=(TextView)layout.findViewById(R.id.textView1); textView.setText(result); AlertDialog.Builder builder=new AlertDialog.Builder(this.getContext()); builder.setView(layout); AlertDialog alertDialog=builder.create(); alertDialog.show(); return true; } }

by 流小海2 0 0
千锋3G学院-Android游戏开发教程-数独-第5讲的笔记

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; } }

by 流小海2 0 0
千锋3G学院-Android游戏开发教程-数独-第4讲的笔记

1、FontMetrics的使用方法FontMetrics fm=paint.getFontMetrics();top：baseLine到字符框的最顶端的高度，是负数bottom：baseLine到字符框的最低端的高度，是正数ascent：baseLine到字符视觉最顶端的高度，是负数descent：baseLine到字符视觉最顶端的高度，是正数(ascent+descent)/2 关键代码：float x=width/2; float y=height/2 - (ascent+descent)/2Game.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]; public Game() { shuduku=formPuzzleString(str); } //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; }}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.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); } }

by 流小海2 0 0
千锋3G学院-Android游戏开发教程-数独-第3讲的笔记

1、绘制九宫格2、在九宫格中放置数字MyView.java文件:package com.example.shudu03;import android.content.Context;import android.graphics.Canvas;import android.graphics.Paint;import android.view.View;public class MyView extends View { public MyView(Context context) { super(context); } private float width; private float height; @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)); //画横竖三条颜色重的线 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); float x=width/2; canvas.drawText("1", 3*width+x, 61, paintData); super.onDraw(canvas); } }color.xml文件：<?xml version="1.0" encoding="utf-8"?><resources> <color name="backgroundColor">#ffe2e5e7</color> <color name="textColor">#ff252525</color> <color name="oneLine">#ffeceff0</color> <color name="twoLine">#fffbfbfb</color> <color name="threeLine">#ff858585</color></resources>MainActivity.java文件：package com.example.shudu03;import android.os.Bundle;import android.app.Activity;import android.view.Menu;public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);// setContentView(R.layout.activity_main); setContentView(new MyView(this)); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; }}

by 流小海2 0 0
千锋3G学院-Android游戏开发教程-数独-第2讲的笔记

1、Paint的设置方法setAntiAlias：设置画笔的锯齿效果setColor：设置画笔颜色setARGB：设置画笔的a、r、g、b值，接受整形参数。setAlpha：设置Alpha值setTextSize：设置字体尺寸setStyle：设置画笔风格，空心或者实心setStrokeWidth：设置空心的边框宽度getColor：得到画笔的颜色getAlpha：得到画笔的Alpha值2、使用Canvas绘制点、线和图形绘制直线：drawLine(float startX, float startY, float stopX, float stopY, Paint paint)绘制矩形：drawRect(float left, float top, float right, float bottom, Paint paint)绘制圆形：drawCircle(float cx, float cy, float radius, Paint paint)3、使用Canvas绘制文字drawText(String text, float x, float y, Paint paint)4、使用Canvas绘制图片的方法drawBitmap(Bitmap bitmap, float left, float top, Paint paint )相应的代码如下：canvas.drawBitmap(BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher),100, 400, paint);

by 流小海2 0 0
千锋3G学院-Android游戏开发教程-数独-第1讲的笔记

1.数独，日本人发明2.Android图形编程：颜色color，画笔paint，画布canvas对象3.Color静态方法argb(int,int,int,int),a透明度,rgb三原色4.程序中的颜色多次使用时可用XML页面定义5. 自定义view：定义一个类继承view，重写onDraw方法，在onDraw中用Canvas,Paint对象绘制图形6.View是所有控件类的父类，绘制View时都是调用onDraw方法，具体使用Canvas,Pain

by fisher_2012 0 0
千锋3G学院-Android游戏开发教程-数独-第1讲的笔记

Android图形编程基本概念1.颜色对象2.画笔对象3.画布对象

by 爱在冷月飘 0 0
千锋3G学院-Android游戏开发教程-数独-第1讲的笔记

Android图形编辑基本概念1、颜色对象2、画笔对象3、画布对象Android 系统当中颜色的表示方法：1、int color1 = Color.blue（blue是一个int）2、int Color2 = Color.argb（1）【a是透明度，r是红色，g绿的浓度，b蓝色浓度】3、在xml文件当中定义颜色；Paint画笔该类的对象用于控制画笔的风格（粗细等等）和颜色等方面的信息；例如：paint.setColor（Color.blue）;Canvas画布该类代表一块画布，可以在画布上绘制字符、图片和图形等等内容。例如：canvas.drawCircle（300,400,100，paint);如何自定义View的基本实现方法Button、TextView、等等是一个View；1、定义一个类，继承View；2、复写View的onDraw函数。3、在onDraw当中使用Canvas和Paint对象绘制图形。如何自定义View以及如何在onDraw中画出来。视频实在太不清楚了。。代码看不清楚。。

by LUlu123 0 0
千锋3G学院-Android游戏开发教程-数独-第8讲的笔记

1 为数字按钮绑定监听器2 刷新九宫格显示3 更新备选数字数组

by Dingo妹 0 0
千锋3G学院-Android游戏开发教程-数独-第7讲的笔记

1 实现Dialog类的方法2 为用户显示备选数字

by Dingo妹 0 0
千锋3G学院-Android游戏开发教程-数独-第6讲的笔记

1 对话框的使用方法AlertDialog.Builder2 自定义对话框的方法 3 在对话框中显示候选数字

by Dingo妹 0 0
千锋3G学院-Android游戏开发教程-数独-第5讲的笔记

1 单点触摸事件onTouchEvent（MotionEvent event）2 碰撞检测 3 可用数据计算

by Dingo妹 0 0
千锋3G学院-Android游戏开发教程-数独-第4讲的笔记

1 FontMetrics的使用方法FontMetrics fm = paint.getFontMetrics();top,bottom包括留白ascent、descent不包括留白top和ascent值是负数2 文字在矩形框中的居中方法设置画笔在水平方向居中利用FontMetrcs中的数据，在垂直方向居中。baseline居中后向下移动（ascent-descent）/23 初始化九宫格数据Game类，游戏逻辑。

by Dingo妹 1 1
千锋3G学院-Android游戏开发教程-数独-第3讲的笔记

练习课1 绘制九宫格背景-浅蓝细线加深颜色的线 2 在九宫格当中放置数字根据小格子的左顶点绘制数字代码shuduViewMainActivitycolor.xml

by Dingo妹 0 0

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千锋3G学院-Android游戏开发教程-数独-第2讲的笔记
alpha 透明度
千锋3G学院-Android游戏开发教程-数独-第7讲的笔记
public class MyDialog extends Dialog { private final View[] keys = new View[9]; private final int[] used;public MyDialog(Context context, int[] used) { super(context); this.used = used; }// Dialog第一次显示时调用onCreate方法; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // 设置Dialog的标题和布局文件; setTitle("KeyDialog"); setContentView(R.layout.dialog); // 调用这个方法取得封装的Button控件; findViews(); //遍历整个used数组，得到不可用的数据; for (int i = 0; i < used.length; i++) { if (used[i] != 0) { //根据used得到的数据，把可以用的数据赋值给Button控件， //设置keys数组里的按钮是否可见，INVISIBLE参数为不可见; keys[used[i]-1].setVisibility(View.INVISIBLE); } }}private void findViews() { keys[0] = findViewById(R.id.NO1); keys[1] = findViewById(R.id.NO2); keys[2] = findViewById(R.id.NO3); keys[3] = findViewById(R.id.NO4); keys[4] = findViewById(R.id.NO5); keys[5] = findViewById(R.id.NO6); keys[6] = findViewById(R.id.NO7); keys[7] = findViewById(R.id.NO8); keys[8] = findViewById(R.id.NO9); }} 注意：TableLayout 下的android:stretchColumns属性:设置可伸展的列。该列可以向行方向伸展，最多可占据一整行。控制Dialog的宽度。
千锋3G学院-Android游戏开发教程-数独-第6讲的笔记
//可以分成2大块来看!!! //1、第一块是创建View，把自定义的布局文件转换成View对象; LayoutInflater layout = LayoutInflater.from(this.getContext()); View layoutView = layout.inflate(R.layout.dialog, null); TextView textView = (TextView) layoutView.findViewById(R.id.textID); textView.setText(sb.toString()); //2、创建Dialog对象并把设置好的View填充进去; AlertDialog.Builder builder = new AlertDialog.Builder(this.getContext()); builder.setView(layoutView); AlertDialog dialog = builder.create(); dialog.show();
千锋3G学院-Android游戏开发教程-数独-第5讲的笔记
//取出不可用的数据; public int[] getUsedTilesByCoor(int x, int y){ return used[x][y]; } //计算单元格中不可用的数据; public int[] calculateUsedTiles(int x, int y){ int [] c = new int[9]; //计算Y轴方向不可用数据; for(int i = 0; i < 9; i ++){ if( i == y ){ continue; } int t = getTile(x,i); if(t!=0){ c[t-1]=t; } } //计算X轴方向不可用数据： for(int i = 0; i < 9 ; i++){ if(i == x){ continue; } int t = getTile(i,y); if(t != 0){ c[t-1] = t; } } //计算小九宫格不可用数据; 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 = getTile(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; } //获取屏幕点击的焦点 @Override public boolean onTouchEvent(MotionEvent event) { if(event.getAction() != MotionEvent.ACTION_DOWN){ return super.onTouchEvent(event); } int selectedX = (int)(event.getX()/width); int selectedY = (int)(event.getY()/height); int used[] = game.getUsedTilesByCoor(selectedX, selectedY); for(int i = 0 ; i < used.length ; i++){ System.out.println(used[i]); } return true; }