다른 클래스에서 SurfaceView에 액세스하는 방법은 무엇입니까?

Question

우주선이 왼쪽이나 오른쪽으로 이동하고 총알을 발사 할 수있는 아주 간단한 촬영을 시도하고 있습니다. 나는 이것을 멀리 보았고, 내가 물건과 타입의 배치에 엉망이되었을지도 모른다는 것을 깨달았다. 우주선과 버튼은 현재 RelativeLayout 내의 ImageViews입니다. 스타 배경은 SurfaceView 내 유일한 것입니다. 실제로는 "배경"이 아니지만 무작위로 생성 된 비트 맵이므로 움직이는 것처럼 보입니다.

더 많은 개체를 만들어야합니다 : 글 머리 기호와 적. 가장 큰 문제는 총알이 우주선에서 발사되도록 우주선 좌표에 액세스해야한다는 것입니다.

내가 잘못 했니? 대신 버튼을 SurfaceView에 비트 맵으로 그려야합니까? 이 작업을 수행하는 가장 좋은 방법을 알고 싶습니다.

현재 상태에서 우주선이 왼쪽에서 오른쪽으로 원활하게 이동하고 단추가 색상을 전환하여 사운드를 재생합니다. 문제는이 자체을 할 수있는 "적절한"방법 인 경우

import android.app.Activity; 
import android.content.Context; 
import android.graphics.Bitmap; 
import android.graphics.BitmapFactory; 
import android.graphics.Canvas; 
import android.graphics.Color; 
import android.media.AudioManager; 
import android.media.MediaPlayer; 
import android.media.SoundPool; 
import android.os.Build; 
import android.os.Bundle; 
import android.os.Handler; 
import android.util.Log; 
import android.view.MotionEvent; 
import android.view.SurfaceHolder; 
import android.view.SurfaceView; 
import android.view.View; 
import android.widget.FrameLayout; 
import android.widget.ImageButton; 
import android.widget.ImageView; 
import android.widget.RelativeLayout; 
import java.util.Random; 

public class MainActivity extends Activity { 

    GameView gameView; 
    FrameLayout game; 
    RelativeLayout widgets; 
    ImageButton leftButton; 
    ImageButton rightButton; 
    ImageButton leftFireButton; 
    ImageButton rightFireButton; 
    ImageView ship; 
    float shipX; 
    MediaPlayer mp; 
    static final int leftButtonID = 1; 
    static final int rightButtonID = 2; 
    static final int leftFireButtonID = 3; 
    static final int rightFireButtonID = 4; 
    static final int laserId = 5; 
    SoundPool soundPool; 
    int soundID; 
    //Bitmap laser; 
    //ImageView laser; 


    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     ship = new ImageView(this); 
     gameView = new GameView(this); 
     game = new FrameLayout(this); 
     widgets = new RelativeLayout(this); 
     leftButton = new ImageButton(this); 
     rightButton = new ImageButton(this); 
     leftFireButton = new ImageButton(this); 
     rightFireButton = new ImageButton(this); 
     //laser = BitmapFactory.decodeResource(getResources(), R.drawable.laser_beam); 
     //laser = new ImageView(this); 


     leftButton.setId(leftButtonID); 
     rightButton.setId(rightButtonID); 
     leftFireButton.setId(leftFireButtonID); 
     rightFireButton.setId(rightFireButtonID); 
     //laser.setId(laserId); 


     //ship = BitmapFactory.decodeResource(getResources(),R.drawable.spaceship_1_80x70); //should this be an image or bitmap? 
     //laser.setImageResource(R.drawable.laser_beam); Should be a bitmap instead? 
     leftButton.setImageResource(R.drawable.left_arrow); 
     rightButton.setImageResource(R.drawable.right_arrow); 
     leftFireButton.setImageResource(R.drawable.red_button); 
     rightFireButton.setImageResource(R.drawable.red_button); 
     ship.setImageResource(R.drawable.spaceship_1_80x70); 


     //add views to screen 
     game.addView(gameView); 
     game.addView(widgets); 
     widgets.addView(leftButton); 
     widgets.addView(rightButton); 
     widgets.addView(leftFireButton); 
     widgets.addView(rightFireButton); 
     widgets.addView(ship); 
     leftButton.setBackgroundColor(Color.TRANSPARENT); 
     rightButton.setBackgroundColor(Color.TRANSPARENT); 
     leftFireButton.setBackgroundColor(Color.TRANSPARENT); 
     rightFireButton.setBackgroundColor(Color.TRANSPARENT); 


     mp = MediaPlayer.create(this, R.raw.bass_loop); 
     mp.setLooping(true); 
     mp.start(); 
     loadSounds(this); 


     leftButton.setOnTouchListener(new View.OnTouchListener() { 
      private Handler handler; 

      @Override 
      public boolean onTouch(View view, MotionEvent motionEvent) { 
       switch(motionEvent.getAction()) { 
        case MotionEvent.ACTION_DOWN: 
         if(handler != null) return true; 
         handler = new Handler(); 
         handler.postDelayed(action,50); 
         break; 
         case MotionEvent.ACTION_UP: 
          if(handler == null) return true; 
          handler.removeCallbacks(action); 
          handler = null; 
          break; 
       } 
       return true; 
      } 
      Runnable action = new Runnable() { 
       @Override public void run() { 
        shipX = ship.getX() - 25; 
        ship.setX(shipX); 
        handler.postDelayed(this,50); 
       } 
      }; 
     }); 
     rightButton.setOnTouchListener(new View.OnTouchListener() { 
      private Handler handler; 

      @Override 
      public boolean onTouch(View view, MotionEvent motionEvent) { 
       switch(motionEvent.getAction()) { 
        case MotionEvent.ACTION_DOWN: 
         if(handler != null) return true; 
         handler = new Handler(); 
         handler.postDelayed(action,50); 
         break; 
        case MotionEvent.ACTION_UP: 
         if(handler == null) return true; 
         handler.removeCallbacks(action); 
         handler = null; 
         break; 
       } 
       return true; 
      } 
      Runnable action = new Runnable() { 
       @Override public void run() { 
        shipX = ship.getX() + 25; 
        ship.setX(shipX); 
        handler.postDelayed(this,50); 
       } 
      }; 
     }); 

     leftFireButton.setOnTouchListener(new View.OnTouchListener() { 
      @Override 
      public boolean onTouch(View view, MotionEvent motionEvent) { 
       switch(motionEvent.getAction()) { 
        case MotionEvent.ACTION_DOWN: 

         //TODO FIRE BULLET.... 

         leftFireButton.setBackgroundResource(R.drawable.red_button_pressed); 
         soundPool.play(soundID,1.0f,0.5f,1,0,1.0f); 
         return true; 
        case MotionEvent.ACTION_UP: 
         leftFireButton.setBackgroundResource(R.drawable.red_button); 
         //widgets.removeView(laser); 
         return true; 
       } 

       return false; 
      } 
     }); 
     rightFireButton.setOnTouchListener(new View.OnTouchListener() { 
      @Override 
      public boolean onTouch(View view, MotionEvent motionEvent) { 
       switch(motionEvent.getAction()) { 
        case MotionEvent.ACTION_DOWN: 

         //TODO FIRE BULLET 

         rightFireButton.setBackgroundResource(R.drawable.red_button_pressed); 
         soundPool.play(soundID,1.0f,0.5f,1,0,1.0f); 
         return true; 
        case MotionEvent.ACTION_UP: 
         rightFireButton.setBackgroundResource(R.drawable.red_button); 
         //widgets.removeView(laser); 

         return true; 
       } 

       return false; 
      } 
     }); 

     //Setup ship 
     RelativeLayout.LayoutParams shipParams = new RelativeLayout.LayoutParams(250, 250); 

     //Setup a 200 x 200 ImageView for Left Button 
     RelativeLayout.LayoutParams leftBtn = new RelativeLayout.LayoutParams(200,200); 

     //Setup a 200 x 200 ImageView for Right Button 
     RelativeLayout.LayoutParams rightBtn = new RelativeLayout.LayoutParams(200,200); 

     //Setup a 200 x 200 ImageView for Left Fire Button 
     RelativeLayout.LayoutParams leftFireBtn = new RelativeLayout.LayoutParams(200,200); 

     //Setup a 200 x 200 ImageView for Right Fire Button 
     RelativeLayout.LayoutParams rightFireBtn = new RelativeLayout.LayoutParams(200,200); 

     //Add rules to align the left button programmatically 
     leftBtn.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM); 
     leftBtn.addRule(RelativeLayout.ALIGN_PARENT_LEFT); 

     //Add rules to align the right button programmatically 
     rightBtn.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM); 
     rightBtn.addRule(RelativeLayout.ALIGN_PARENT_RIGHT); 

     //Add rules to align left and right fire buttons 
     leftFireBtn.addRule(RelativeLayout.ALIGN_PARENT_LEFT); 
     rightFireBtn.addRule(RelativeLayout.ALIGN_PARENT_RIGHT); 
     leftFireBtn.addRule(RelativeLayout.ABOVE,leftButton.getId()); 
     rightFireBtn.addRule(RelativeLayout.ABOVE, rightButton.getId()); 
     //leftFireBtn.topMargin = 850; 
     //rightFireBtn.topMargin = 850; 

     shipParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM); 
     shipParams.addRule(RelativeLayout.CENTER_HORIZONTAL); 
     //shipParams.bottomMargin = 100; 

     //Now set the params 
     leftButton.setLayoutParams(leftBtn); 
     rightButton.setLayoutParams(rightBtn); 
     leftFireButton.setLayoutParams(leftFireBtn); 
     rightFireButton.setLayoutParams(rightFireBtn); 
     ship.setLayoutParams(shipParams); 

     //Set the content view of the game 
     this.setContentView(game); 
    } 

    public void loadSounds(Context context) { 
     if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { 
      soundPool = new SoundPool.Builder().setMaxStreams(10).build(); 
     } 
     else { 
      soundPool = new SoundPool(10, AudioManager.STREAM_MUSIC, 1); 
     } 
     soundID = soundPool.load(context,R.raw.laser,1); 
    } 

    @Override 
    protected void onPause() { 
     super.onPause(); 
     mp.pause(); 
     gameView.pause(); 
    } 
    @Override 
    protected void onResume() { 
     super.onResume(); 
     mp.start(); 
     gameView.resume(); 
    } 
    public class GameView extends SurfaceView implements Runnable { 
     Thread gameViewThread = null; 
     SurfaceHolder surfaceHolder; 
     boolean okToRun = true; 
     Bitmap star; 
     Bitmap three_pixel_star; 

     public GameView(Context context) { 
      super(context); 
      //initialize holder 
      surfaceHolder = this.getHolder(); 
     } 

     @Override 
     public void run() { 
      while(okToRun) { 
       if(!surfaceHolder.getSurface().isValid()) { 
        continue; 
       } 
       Canvas gameCanvas = surfaceHolder.lockCanvas(); 
       customOnDraw(gameCanvas); 
       surfaceHolder.unlockCanvasAndPost(gameCanvas); 

      } 
     } 

     protected void customOnDraw(Canvas canvas) { 
      Random random = new Random(); 
      Random random1 = new Random(); 
      canvas.drawColor(Color.BLACK); 
      star = BitmapFactory.decodeResource(getResources(), R.drawable.single_pixel_star); 
      three_pixel_star = BitmapFactory.decodeResource(getResources(),R.drawable.three_pixel_star); 
      canvas.drawBitmap(star, random1.nextInt(canvas.getWidth()-star.getWidth()),random1.nextInt(canvas.getHeight()-star.getHeight()), null); 
      canvas.drawBitmap(three_pixel_star, random.nextInt(canvas.getWidth()-three_pixel_star.getWidth()),random.nextInt(canvas.getHeight()-three_pixel_star.getHeight()), null); 
     } 
     public void pause() { 
      okToRun = false; 
      while(true) { 
       try { 
        gameViewThread.join(); 
       } catch(InterruptedException e) { 
        Log.v("ERROR", e.getMessage()); 
       } 
       break; 
      } 
      gameViewThread = null; 
     } 
     public void resume() { 
      okToRun = true; 
      gameViewThread = new Thread(this); 
      gameViewThread.start(); 
     } 
    } 
} 

Answer 1

글쎄, 나도 몰라,하지만 난 지금 내 배에서 촬영 레이저가 : 여기

내 두 클래스입니다. Bullet 및 BulletController 클래스를 만들고 onTouchListener에 메서드를 구현했습니다.

총알 클래스 :

public class Bullet { 

    private float x; 
    private float y; 
    private Paint paint; 

    Bitmap bullet; 

    public Bullet(float x, float y, Context context) { 
     this.x = x; 
     this.y = y; 

     bullet = BitmapFactory.decodeResource(context.getResources(),R.drawable.laser_beam); 
    } 
    public void tick() { 
     y -= 30; 
    } 
    public void render(Canvas canvas) { 
     canvas.drawBitmap(bullet, x, y,null); 
    } 
} 

BulletController 클래스 : 두 개의 화재 버튼에 대한 내 setOnTouchListener에서

public class BulletController { 

    private LinkedList<Bullet> b = new LinkedList<>(); 

    Bullet tempBullet; 
    Context context; 
    //ImageView ship; 
    float x; 
    float y; 
    public BulletController(Context context) { 
     this.context = context; 
     this.x = x; 
     this.y = y; 
     addBullet(new Bullet(x, y, context)); 
    } 

    public void tick() { 
     for(int i = 0; i < b.size(); i++) { 
      tempBullet = b.get(i); 
      tempBullet.tick(); 
     } 
    } 
    public void render(Canvas canvas) { 
     for(int i = 0; i < b.size(); i++) { 
      tempBullet = b.get(i); 
      tempBullet.render(canvas); 
     } 
    } 
    public void addBullet(Bullet bullet) { 
     b.add(bullet); 
    } 
    public void removeBullet(Bullet bullet) { 
     b.remove(bullet); 
    } 
} 

: 각 버튼을 누를 때와

leftFireButton.setOnTouchListener(new View.OnTouchListener() { 
     @Override 
     public boolean onTouch(View view, MotionEvent motionEvent) { 
      switch(motionEvent.getAction()) { 
       case MotionEvent.ACTION_DOWN: 
        //TODO FIRE BULLET.... 
        bulletController.addBullet(new Bullet((ship.getX() + ship.getWidth()/2) - 15, ship.getY() + ship.getHeight()/2, getApplicationContext())); //<--NEW CODE 
        leftFireButton.setBackgroundResource(R.drawable.red_button_pressed); 
        soundPool.play(soundID,1.0f,0.5f,1,0,1.0f); 
        return true; 
       case MotionEvent.ACTION_UP: 
        leftFireButton.setBackgroundResource(R.drawable.red_button); 
        //widgets.removeView(laser); 
        return true; 
      } 

      return false; 
     } 
    }); 
    rightFireButton.setOnTouchListener(new View.OnTouchListener() { 
     @Override 
     public boolean onTouch(View view, MotionEvent motionEvent) { 
      switch(motionEvent.getAction()) { 
       case MotionEvent.ACTION_DOWN: 
        //TODO FIRE BULLET 
        bulletController.addBullet(new Bullet((ship.getX() + ship.getWidth()/2) - 15, ship.getY() + ship.getHeight()/2, getApplicationContext())); //<--- NEW CODE 


        rightFireButton.setBackgroundResource(R.drawable.red_button_pressed); 
        soundPool.play(soundID,1.0f,0.5f,1,0,1.0f); 
        return true; 
       case MotionEvent.ACTION_UP: 
        rightFireButton.setBackgroundResource(R.drawable.red_button); 
        //widgets.removeView(laser); 

        return true; 
      } 

      return false; 
     } 
    }); 

, 이것은 최종 결과입니다 . 레이저!