下面是代码 可其中出现了一个错误（做了标记），不知道怎么解决，可否有高手帮我看看，能不能稍作修改一下，做成正确的。
就是这句错了 myview = new BallView(this);
package sen.tan;
import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
public class dazhuankuaiActivity extends Activity {
BallView myview;
public static int screenWidth ;
public static int screenHeight;
private TextView textview;
Button kaishi,jieshu,guanyu;
ImageView image;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
String string = "欢迎进入疯狂打砖块游戏";
image = (ImageView) this.findViewById(R.id.image);
image.setImageResource(R.drawable.img1);
textview =(TextView) this.findViewById(R.id.textview);
textview.setTextSize(20);
textview.setTextColor(Color.GREEN);
textview.setBackgroundColor(Color.RED);
textview.setText(string);
kaishi=(Button)findViewById(R.id.button1);
guanyu=(Button)findViewById(R.id.button2);
jieshu=(Button)findViewById(R.id.button3);
kaishi.setWidth(250);
guanyu.setWidth(200);
jieshu.setWidth(150);
kaishi.setTextSize(35);
guanyu.setTextSize(29);
jieshu.setTextSize(24);
jieshu.setOnClickListener(new Button.OnClickListener(){
public void onClick(View v)
{
dazhuankuaiActivity.this.finish();
}
});
guanyu.setOnClickListener(new Button.OnClickListener(){
public void onClick(View v){
textview.setText("本游戏由xxx制作，此游戏控制左右按键，来回移动挡板，不让小球掉落，当小球把上方砖块全部打完时，游戏胜利");
}
});
kaishi.setOnClickListener(new Button.OnClickListener(){
public void onClick(View v){
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
screenWidth = dm.widthPixels;
screenHeight = dm.heightPixels;
setTitle("宽"+screenWidth+" 高"+screenHeight);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
`myview = new BallView(this);` //错误在这里
setContentView(myview);
}
public boolean onKeyDown(int keyCode, KeyEvent event)
{
switch (keyCode)
{
case KeyEvent.KEYCODE_MENU:
myview.resetGame();
break;
case KeyEvent.KEYCODE_DPAD_CENTER:
myview.ball_isRun = !myview.ball_isRun;
break;
case KeyEvent.KEYCODE_DPAD_LEFT:
if(myview.ball_isRun){
if(myview.board_left<=myview.board_x_move)
{
myview.board_left=0;
myview.board_right=myview.board_length;
}else{
myview.board_left-=myview.board_x_move;
myview.board_right-=myview.board_x_move;}
}
break;
case KeyEvent.KEYCODE_DPAD_RIGHT:
if(myview.ball_isRun){
if(screenWidth-myview.board_right<=myview.board_x_move )
{
myview.board_left=screenWidth-myview.board_length;
myview.board_right=screenWidth;
}else{
myview.board_left+=myview.board_x_move;
myview.board_right+=myview.board_x_move;
}
}
break;
case KeyEvent.KEYCODE_DPAD_UP:
if(myview.ball_isRun){
if( myview.board_alterable_top==myview.board_default_top)
{
myview.board_alterable_top-=myview.boardYadd;
myview.board_alterable_bottom-=myview.boardYadd;
}
}
break;
case KeyEvent.KEYCODE_DPAD_DOWN:
if(myview.ball_isRun){
if( myview.board_alterable_top==myview.board_default_top-myview.boardYadd )
{
myview.board_alterable_top=myview.board_default_top;
myview.board_alterable_bottom=myview.board_alterable_top+myview.board_thickness;
}
}
break;
case KeyEvent.KEYCODE_BACK:
dazhuankuaiActivity.this.finish();
break;
}//end switch
return false;
}
//按键弹起事件
}
);
}
}
package sen.tan;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.RadialGradient;
import android.graphics.Shader;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
public class BallView extends SurfaceView implements
SurfaceHolder.Callback, Runnable {
//线程延时控制
final int ball_sleep=1;//毫秒，延时越大，球速越慢
final int ball_r= 8;//小球半径
final float ball2_r= 8;//底下滚珠小球半径
final int ballXorYadd = 4;//小球的基本位移。测试可行值：2，4
//获取屏幕宽度和高度
int screen_width;//320;
int screen_height;//480;
//砖的属性
int brick_width;//每块砖宽
int brick_height;//每块砖高
boolean brick_exist[];//砖是否存在
int k ;// 列//到for循环里才初始化
int j ;// 行
int brick_left = brick_width*(k-1);//到判断语句才初始化
int brick_right = brick_width*k;
int brick_top = brick_height*j;
int brick_bottom = brick_height*(j+1);
//挡板的属性
int board_length;//挡板长度:80比较合适，可以随意修改,但别超过screen_width
final int boardYadd = 16;//按上下键时挡板y方向位移量。经验证4、8、16可以，12不行
final int board_x_move = 30;//挡板x方向位移量:可以随意自定义
int board_left;//挡板左侧（可变）
int board_right;//挡板右侧（可变）
int board_thickness;//挡板厚度
int board_default_top;//即435,挡板的top面初始位置
int board_alterable_top;//挡板上侧（可变）
int board_alterable_bottom;//挡板下侧（可变）
int ball_default_x;//球的初始x坐标
int ball_default_y;//球的初始y坐标
//球的即时坐标（可变）：
int ball_x;//球心横坐标
int ball_y;//球心纵坐标
//球的前一步的y坐标
int ball_previous_y;
int ball_x_speed;//球的横向偏移量//可变
int ball_y_speed;//球的纵向偏移量//可变
boolean ball_isRun;//球是否在动
// 控制循环
boolean mbLoop;
// 定义SurfaceHolder对象
SurfaceHolder mSurfaceHolder = null;
//获得分数
int score;
/* 唤醒渐变渲染 */
Shader mRadialGradient = null;
//------------------------------------------------------------------------------------------------------//
public BallView(Context context) {
super(context);
// 实例化SurfaceHolder
mSurfaceHolder = this.getHolder();
// 添加回调
mSurfaceHolder.addCallback(this);
this.setFocusable(true);
//获取屏幕宽度和高度
screen_width = dazhuankuaiActivity.screenWidth;//320
screen_height = dazhuankuaiActivity.screenHeight;//480
//砖的属性
brick_width = screen_width/5;//每块砖宽64
brick_height = screen_height/15;//每块砖高32
//挡板的属性
board_length = screen_width/4;//挡板长度:80比较合适，可以随意修改,但别超过screen_width
board_left = (screen_width-board_length)/2;//挡板左侧（可变）
board_right = (screen_width+board_length)/2;//挡板右侧（可变）
board_thickness = 5;//挡板厚度
board_default_top = 13*screen_height/15;//即435,挡板的top面初始位置
board_alterable_top = board_default_top;//挡板上侧（可变）
board_alterable_bottom = board_alterable_top+board_thickness;//挡板下侧（可变）
ball_default_x = screen_width/2;//球的初始x坐标
ball_default_y = board_default_top - ball_r;//球的初始y坐标
//球的即时坐标（可变）：
ball_x = ball_default_x;
ball_y = ball_default_y;
//球的前一步的y坐标
ball_previous_y = 0;
ball_x_speed = ballXorYadd;//球的横向偏移量
ball_y_speed = ballXorYadd;//球的纵向偏移量
mbLoop = true;
ball_isRun = false;
score=0;
brick_exist = new boolean[25];
for (int i = 0; i < 25; i++) {
brick_exist[i] = true;
}
/* 构建RadialGradient对象，设置半径的属性 */
mRadialGradient = new RadialGradient(ball_x, ball_y, ball_r,//球中心坐标x,y,半径r
new int[]{Color.WHITE,Color.BLUE,Color.GREEN,Color.RED,Color.YELLOW},//颜色数组
null,//颜色数组中每一种颜色对应的相对位置，为空的话就是平均分布，由中心向外排布
Shader.TileMode.REPEAT);//渲染模式：重复
}
public void resetGame(){
ball_isRun = false;
score =0;//分数
ball_x_speed = ballXorYadd;//球的横向偏移量
ball_y_speed = ballXorYadd;//球的纵向偏移量
ball_x = screen_width/2;//球心起始横坐标
ball_y = board_default_top - ball_r;//球心起始纵坐标
board_left = (screen_width-board_length)/2;//挡板左侧
board_right = (screen_width+board_length)/2;//挡板右侧
board_alterable_top = board_default_top;//挡板上侧
board_alterable_bottom = board_alterable_top+board_thickness;//挡板下侧
for (int i = 0; i < 25; i++) {
brick_exist[i] = true;
}
}
//---------------------------------绘图循环开始----------------------------------
public void run() {
while (mbLoop&&!Thread.currentThread().isInterrupted()) {
try {
Thread.sleep(ball_sleep);
}
catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
//球的前一步y坐标
ball_previous_y = ball_y;
if (ball_isRun) {
ballRunning();// 让小球移动
boardPositionCheck();//检测挡板是否处于“中线”位置，是就随小球上升一步，直至到“上线”
hitWallCheck();//墙壁碰撞检测
hitBoardCheck();//挡板碰撞检测
hitBrickCheck();//砖块碰撞检测
}
synchronized (mSurfaceHolder)
{
Draw();
}
}
}
//---------------------------------绘图循环结束----------------------------------
//------------------------------------------------------------------------------
//让小球移动
public void ballRunning() {
ball_x += ball_x_speed;
ball_y -= ball_y_speed;
}
//朝左或朝右碰撞后小球水平方向逆向
public void ballLeftOrRightHit() {
ball_x_speed *= -1;
}
//朝上或朝下碰撞后小球竖直方向逆向
public void ballUpOrDownHit() {
ball_y_speed *= -1;
}
public void ballcornerHit() {
ball_x_speed *= -1;
ball_y_speed *= -1;
}
public void ballStraightUp() {//功能没实现，这是多余代码
ball_x_speed = 0;//注意在其他地方恢复
ball_y_speed *= -1;
}
//-------------------墙壁碰撞检测开始-------------------------------------
public void hitWallCheck() {
// 左碰墙
if (ball_x <= ball_r &&
ball_y >= ball_r && ball_y <= screen_height)
{
ballLeftOrRightHit();
// 右碰墙
}
if (ball_x >= screen_width - ball_r && //不能写为 else if,因为可能恰好碰到角落。
ball_y >= ball_r && ball_y <= screen_height)
{
ballLeftOrRightHit();
}
// 上碰墙
if (ball_x >= ball_r && ball_x <= screen_width - ball_r &&
ball_y <= ball_r + brick_height) //、、、、、、、、、、、、、、、25号修改
{
ballUpOrDownHit();
}
// 下碰墙
if (ball_x >= ball_r && ball_x <= screen_width - ball_r &&
ball_y >= screen_height-ball_r)
{
ballUpOrDownHit();
if(score<=10){
score = 0;
}
else score-=10;
}
}
//-------------------墙壁碰撞检测结束-------------------------------------
//-----------------------------挡板碰撞检测开始---------------------------
public void hitBoardCheck() {
// 下碰挡板正面
if (ball_x >= ball_r && ball_x <= screen_width - ball_r && //在屏幕内，起码条件
ball_x >= board_left && ball_x <= board_right && //在挡板X域上方
ball_y == board_alterable_top - ball_r &&//球面与挡板相切
ball_previous_y <= board_alterable_top - ball_r //确定球是从上方下落
)
{
if(board_alterable_top==board_default_top-boardYadd ){//如果弹簧伸张，挡板位于上线
ballHitBoardlower();//作用：ball_y_move减小；挡板被打下;小球Y向运动反向
}
else if(board_alterable_top==board_default_top){//如果弹簧压缩，挡板位于下线
boardHitBallHigher();//作用：ball_y_move增加；挡板弹上;小球Y向运动反向
}
}
//斜碰挡板右上角//经验证有效
else if(Math.pow(board_right-ball_x, 2)+Math.pow(board_alterable_top-ball_y,2)<=Math.pow(ball_r, 2)&&
ball_x>board_right && ball_y<board_alterable_top)
{
ballcornerHit();
}
//斜碰挡板的左上角//经验证有效
else if(Math.pow(board_left-ball_x, 2)+Math.pow(board_alterable_top-ball_y,2)<=Math.pow(ball_r, 2)&&
ball_x<board_left && ball_y<board_alterable_top)
{
ballcornerHit();
}
}
//-----------------------------挡板碰撞检测结束--------------------------
private void boardHitBallHigher() {//增强
ballUpOrDownHit();//小球Y方向反向,ball_y_speed变为正数
if(ball_y_speed == ballXorYadd ){
ball_y_speed += ballXorYadd;//离开挡板后小球Y方向速度增强
}
if( boardYadd > ball_y_speed ){//在线程这一轮，小球上升多少，挡板就上升多少。
board_alterable_top = board_default_top - ball_y_speed;
board_alterable_bottom= board_alterable_top+board_thickness;//挡板下层面
}
}
//检测挡板是否处于“中线”位置，是就随小球上升一步，直至到“上线”
private void boardPositionCheck() {//还可直接利用球的位置刷新，board_top与球心相差ball_r
if(board_alterable_top < board_default_top && board_alterable_top > board_default_top-boardYadd){
//挡板随球上升
if(board_alterable_top - ball_y_speed >= board_default_top-boardYadd){
board_alterable_top -= ball_y_speed;//挡板上层面
board_alterable_bottom= board_alterable_top+board_thickness;//挡板下层面
}
else{
board_alterable_top = board_default_top-boardYadd;//挡板上层面
board_alterable_bottom= board_alterable_top+board_thickness;//挡板下层面
}
}
}
private void ballHitBoardlower() {//减弱
board_alterable_top=board_default_top;
board_alterable_bottom=board_default_top+board_thickness;//挡板被打退
ballUpOrDownHit();//小球Y方向反向
if(ball_y_speed==2*ballXorYadd){
ball_y_speed -= ballXorYadd;//小球Y方向速度减弱
}
}
//砖块碰撞检测开始-----------------------------------------------------------
public void hitBrickCheck() {
for (int i = 0; i <25 ; i++) {
if (brick_exist[i]) {
k = i % 5+1;// 1,2,3,4,5循环
j = i / 5+1;// 1,1,1,1,1;2,2,2,2,2,;...;5,5,5,5,5
brick_left = brick_width*(k-1);
brick_right = brick_width*k;
brick_top = brick_height*j;
brick_bottom = brick_height*(j+1);
//朝下碰砖的top面 AAAAAAAAAAAAAAAAAAAAA
if(ball_x >= brick_left && ball_x <= brick_right &&
ball_y >= brick_top-ball_r && ball_y < brick_top)
{
ballUpOrDownHit();
brick_exist[i] = false;
score+=4;
//朝下正碰2砖中间，i砖右上角检测
if(k!=5 && ball_x == brick_right)//如果不是第5列砖的右侧边
{
//如果砖[i+1]存在
if(brick_exist[i+1]){
brick_exist[i+1] = false;
score+=4;
}
}
//朝下正碰2砖中间，i砖左上角检测
else if(k!=1 && ball_x == brick_left)//如果不是第1列砖的左侧边
{
//如果砖[i-1]存在
if(brick_exist[i-1]){
brick_exist[i-1] = false;
score+=4;
}
}
}
//朝上碰砖的bottom面 BBBBBBBBBBBBBBBBB
else if(ball_x >= brick_left && ball_x <= brick_right &&
ball_y > brick_bottom&& ball_y <= brick_bottom + ball_r )
{
ballUpOrDownHit();
brick_exist[i] = false;
score+=4;
//朝上正碰2块砖中间--i砖的右下角检测
if(k!=5 && ball_x == brick_right) //如果不是第5列砖的右侧边
{
if(brick_exist[i+1]){//如果砖[i+1]存在
brick_exist[i+1] = false;
score+=4;
}
}
//朝上正碰2块砖中间--i砖的左下角检测
else if(k!=1 && ball_x == brick_left) //如果不是第1列砖的左侧边
{
if(brick_exist[i-1]){//如果砖[i-1]存在
brick_exist[i-1] = false;
score+=4;
}
}
}
//朝右碰砖的left面CCCCCCCCCCCCCCCCC
else if(ball_x >= brick_left -ball_r&&ball_x < brick_left&&
ball_y >= brick_top && ball_y <= brick_bottom)
{
ballLeftOrRightHit();
brick_exist[i] = false;
score+=4;
//朝右正碰2块砖中间，左下角检测
if(j!=5 && ball_y == brick_bottom)//如果不是第5行砖的下侧边
{
if(brick_exist[i+5]){//如果砖[i+5]存在
brick_exist[i+5] = false;
score+=4;
}
}
//朝右正碰2块砖中间，左上角检测
else if(j!=1 && ball_y == brick_top)//如果不是第1行砖的上侧边
{
if(brick_exist[i-5]){//如果砖[i-5]存在
brick_exist[i-5] = false;
score+=4;
}
}
}
//朝左碰砖的right面DDDDDDDDDDDDDDDDDD
else if(ball_x >= brick_right && ball_x <= brick_right+ball_r&&
ball_y >= brick_top && ball_y <= brick_bottom)
{
ballLeftOrRightHit();
brick_exist[i] = false;
score+=4;
//朝左正碰2块砖中间，右下角检测
if(j!=5 && ball_y == brick_bottom )//如果不是第5行砖的下侧边
{
if(brick_exist[i+5]){//如果砖[i+5]存在
brick_exist[i+5] = false;
score+=4;
}
}
//朝左正碰2块砖中间，右上角检测
else if(j!=1 && ball_y == brick_top )//如果不是第1行砖上侧边
{
if(brick_exist[i-5]){//如果砖[i-5]存在
brick_exist[i-5] = false;
score+=4;
}
}
}
/////////////////////////////////////////
//斜碰i砖的左下角EEEEEEEEEEEEEEEEEEEEEEEE
else if(( i-1<0||(i-1>=0&&!brick_exist[i-1]) ) &&
(i+5>=25||(i+5<25&&!brick_exist[i+5]) )&&
Math.pow(brick_left-ball_x, 2)+Math.pow(brick_bottom-ball_y,2)<=Math.pow(ball_r, 2)&&
ball_x>brick_left-ball_r && ball_x<brick_left &&
ball_y>brick_bottom && ball_y<brick_bottom+ball_r )
{
ballcornerHit();
brick_exist[i] = false;
score+=4;
}
//斜碰i砖的右下角FFFFFFFFFFFFFFFFFFFFFFFFFF
else if( (i+1>=25||(i+1<25&&!brick_exist[i+1]) )&&
(i+5>=25||(i+5<25&&!brick_exist[i+5]) )&&
Math.pow(brick_right-ball_x, 2)+Math.pow(brick_bottom-ball_y,2)<=Math.pow(ball_r, 2)&&
ball_x>brick_right&&ball_x<brick_right+ball_r&&
ball_y>brick_bottom&&ball_y<brick_bottom+ball_r )
{
Log.v("----------", "right bottom hit"+i+":"+brick_exist[i]);
ballcornerHit();
brick_exist[i] = false;
score+=4;
}
//斜碰i砖的右上角GGGGGGGGGGGGGGGGGGGGGGGG
else if( (i+1>=25||(i+1<25&&!brick_exist[i+1]) )&&
(i-5<0||(i-5>0&&!brick_exist[i-5]) )&&
Math.pow(brick_right-ball_x, 2)+Math.pow(brick_top-ball_y,2)<=Math.pow(ball_r, 2)&&
ball_x>brick_right && ball_x<brick_right+ball_r&&
ball_y>brick_top-ball_r && ball_y<brick_top)
{
ballcornerHit();
brick_exist[i] = false;
score+=4;
}
//斜碰i砖的左上角HHHHHHHHHHHHHHHHHHHHHHHHHH
else if((i-1<0||(i-1>=0&&!brick_exist[i-1])) &&
(i-5<0||(i-5>=0&&!brick_exist[i-5])) &&
Math.pow(brick_left-ball_x, 2)+Math.pow(brick_top-ball_y,2)<=Math.pow(ball_r, 2)&&
ball_x>brick_left-ball_x && ball_x<brick_left &&
ball_y>brick_top-ball_r && ball_y<brick_top )
{
ballcornerHit();
brick_exist[i] = false;
score+=4;
}
}//end if
}//end for
}//end hitBrickCheck()
//砖块碰撞检测结束-----------------------------------------------------------
//------------------------------------------
public boolean gameOver(){
int count = 0;
for(boolean s:brick_exist){
if(!s){
count++;
}
}
if(count == 25){
return true;
}else{
return false;
}
}
//------------------------------------------
//---------------绘图方法开始------------------------
public void Draw() {
// 锁定画布，得到canvas
Canvas canvas = mSurfaceHolder.lockCanvas();
if (mSurfaceHolder == null || canvas == null) {
return;
}
// 绘图
Paint mPaint = new Paint();
// 设置取消锯齿效果
mPaint.setAntiAlias(true);
mPaint.setColor(Color.BLACK);
// 绘制矩形--背景
canvas.drawRect(0, 0, screen_width, brick_height-2, mPaint);
mPaint.setColor(Color.GREEN);
// 绘制矩形--背景
canvas.drawRect(0, brick_height-2, screen_width, screen_height, mPaint);
mPaint.setColor(Color.RED);//设置字体颜色
mPaint.setTextSize(brick_height-7);//设置字体大小
canvas.drawText("得分："+score, 0, brick_height-7, mPaint);
// 绘制顶层挡板````````````````````````````````````````````````````````25号修改
mPaint.setColor(Color.BLACK);//设置颜色
mPaint.setStrokeWidth(4);//设置粗细
canvas.drawLine(0, brick_height-2, screen_width, brick_height-2, mPaint);
for (int i = 0; i <25 ; i++) {
if (brick_exist[i]) {
k = i % 5+1;// 1,2,3,4,5循环
j = i / 5+1;// 1,1,1,1,1;2,2,2,2,2,;...;5,5,5,5,5
brick_left = brick_width*(k-1);
brick_right = brick_width*k;
brick_top = brick_height*j;
brick_bottom = brick_height*(j+1);
mPaint.setStyle(Paint.Style.FILL);// 设置实心画笔
mPaint.setColor(Color.YELLOW);
canvas.drawRect(brick_left+1, brick_top+1, brick_right-1,brick_bottom-1, mPaint);
mPaint.setStyle(Paint.Style.STROKE);// 设置空心画笔
mPaint.setStrokeWidth(2);//设置粗细
mPaint.setColor(Color.BLUE);
canvas.drawRect(brick_left+3, brick_top+3, brick_right-3,brick_bottom-3, mPaint);
}
}
// 设置实心画笔
mPaint.setStyle(Paint.Style.FILL);
{
mPaint.setShader(mRadialGradient);
canvas.drawCircle(ball_x, ball_y, ball_r, mPaint);
}
Paint mPaint2 = new Paint();
// 设置取消锯齿效果
mPaint2.setAntiAlias(true);
// 设置实心画笔
mPaint2.setStyle(Paint.Style.FILL);
{
mPaint2.setColor(Color.BLACK);
/* 绘制矩形挡板 */
canvas.drawRect(board_left, board_alterable_top, board_right, board_alterable_bottom,mPaint2);
float board2_bottom = screen_height - 2*ball2_r;//164
float board2_top = board2_bottom - 4;//160
//线段端点坐标数组
float x0 = board_left+(board_right-board_left)/4;
float y0 = board_alterable_bottom;//440或者444
float springAdd = (board2_top- board_alterable_bottom)/8;//即2.5或者2：弹簧小线段的y向长度
float springWidth = 5.0f;//弹簧小线段的x向长度
float x1 = x0 - springWidth;
float y1 = y0 + springAdd;
float x2 = x0 + springWidth;
float y2 = y0 + 3*springAdd;
float x3 = x1 ;
float y3 = y0 + 5*springAdd;
float x4 = x2;
float y4 = y0 + 7*springAdd;
float x5 = x0 ;
float y5 = board2_top;//即460
float between_spring = (board_right-board_left)/2;
float pts[] = { x0,y0,x1,y1,
x1,y1,x2,y2,
x2,y2,x3,y3,
x3,y3,x4,y4,
x4,y4,x5,y5};
float pts2[] = {x0+between_spring,y0, x1+between_spring,y1,
x1+between_spring,y1, x2+between_spring,y2,
x2+between_spring,y2, x3+between_spring,y3,
x3+between_spring,y3, x4+between_spring,y4,
x4+between_spring,y4, x5+between_spring,y5};
mPaint2.setStrokeWidth(2);//设置弹簧粗细
//绘制2个弹簧
canvas.drawLines(pts, mPaint2);
canvas.drawLines(pts2, mPaint2);
//绘制下层挡板
canvas.drawRect(board_left, board2_top, board_right, board2_bottom,mPaint2);
mPaint2.setColor(Color.BLACK);//
// 绘制最下面的两个“轮子”(圆心x,圆心y,半径r,p)
canvas.drawCircle(board_left+ball2_r, screen_height-ball2_r, ball2_r, mPaint2);//圆
canvas.drawCircle(board_right-ball2_r, screen_height-ball2_r, ball2_r, mPaint2);
mPaint2.setColor(Color.WHITE);//
canvas.drawPoint(board_left+ball2_r, screen_height-ball2_r, mPaint2);//绘制左轮轮心
canvas.drawPoint(board_right-ball2_r, screen_height-ball2_r, mPaint2);//绘制右轮轮心
}//实心画笔mPaint2结束
if(gameOver()){
// mbLoop = false;//注释掉的话GAME OVER后也可重启
ball_isRun = false;
mPaint2.setColor(Color.BLACK);//设置字体颜色
mPaint2.setTextSize(40.0f);//设置字体大小
canvas.drawText("GAME OVER", screen_width/32+40, screen_height/16*9-70, mPaint2);
mPaint2.setTextSize(20.0f);//设置字体大小
canvas.drawText("Press \"MENU\" button to restart,",
screen_width/32, //320/32=10
screen_height/16*9, //480/16=30,30*9=270
mPaint2);
canvas.drawText("Press \"BACK\" button to exit.",
screen_width/32, //320/32=10
screen_height/16*10, //480/16=30,30*10=300
mPaint2);
}
// 绘制后解锁，绘制后必须解锁才能显示
mSurfaceHolder.unlockCanvasAndPost(canvas);
}// end of Draw()
//---------------------绘图方法结束-----------------------------------------------
// 在surface的大小发生改变时激发
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
}
// 在surface创建时激发
public void surfaceCreated(SurfaceHolder holder) {
new Thread(this).start();// 开启绘图线程
}
// 在surface销毁时激发
public void surfaceDestroyed(SurfaceHolder holder) {
// 停止循环
mbLoop = false;
}
}
下个界面的代码是
package ab.cc;
import android.app.Activity;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.Window;
import android.view.WindowManager;
public class BaomingActivity extends Activity
{
BallView myView;
static int screenWidth;
static int screenHeight;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
/* 定义DisplayMetrics对象 */
DisplayMetrics dm = new DisplayMetrics();
/* 取得窗口属性 */
getWindowManager().getDefaultDisplay().getMetrics(dm);
/* 窗口的宽度 */
screenWidth = dm.widthPixels;
/* 窗口的高度 */
screenHeight = dm.heightPixels;
//
setTitle("宽"+screenWidth+" 高"+screenHeight);
/* 设置为无标题栏 */
requestWindowFeature(Window.FEATURE_NO_TITLE);
/* 设置为全屏模式 */
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
myView = new BallView(this);
//设置显示GameSurfaceView视图
setContentView(myView);
}//end of onCreate()
//触笔事件
public boolean onTouchEvent(MotionEvent event)
{
return true;
}
//按键按下事件
public boolean onKeyDown(int keyCode, KeyEvent event)
{
switch (keyCode)
{
//菜单按键-设为初始菜单
case KeyEvent.KEYCODE_MENU:
myView.resetGame();
//重新开始
break;
//中间按键
case KeyEvent.KEYCODE_DPAD_CENTER:
myView.ball_isRun = !myView.ball_isRun;//开始//暂停
break;
//左方向键
case KeyEvent.KEYCODE_DPAD_LEFT:
if(myView.ball_isRun){
if(myView.board_left<=myView.board_x_move)
{
myView.board_left=0;
myView.board_right=myView.board_length;
}else{
myView.board_left-=myView.board_x_move;
myView.board_right-=myView.board_x_move;}
}
break;
//右方向键
case KeyEvent.KEYCODE_DPAD_RIGHT:
if(myView.ball_isRun){
if(screenWidth-myView.board_right<=myView.board_x_move )
{
myView.board_left=screenWidth-myView.board_length;
myView.board_right=screenWidth;
}else{
myView.board_left+=myView.board_x_move;
myView.board_right+=myView.board_x_move;
}
}
break;
//上方向键
case KeyEvent.KEYCODE_DPAD_UP:
if(myView.ball_isRun){
if( myView.board_alterable_top==myView.board_default_top)
{
myView.board_alterable_top-=myView.boardYadd;
myView.board_alterable_bottom-=myView.boardYadd;
}
}
break;
//下方向键
case KeyEvent.KEYCODE_DPAD_DOWN:
if(myView.ball_isRun){
if( myView.board_alterable_top==myView.board_default_top-myView.boardYadd )
{
myView.board_alterable_top=myView.board_default_top;
myView.board_alterable_bottom=myView.board_alterable_top+myView.board_thickness;
}
}
break;
//返回键
case KeyEvent.KEYCODE_BACK:
this.finish();
break;
}//end switch
return false;
}
//按键弹起事件
public boolean onKeyUp(int keyCode, KeyEvent event)
{
return true;
}
public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event)
{
return true;
}
}
