Android遊戲在Su​​rfaceview lagg spikes

Question

guys。我正在製作我的第一部Android遊戲，但偶然發現了一個問題。幀率似乎有隨機滯後尖峯。如果我對背景進行評論，幀速率會變得更加平滑。我環顧四周，無法找到任何解決我的問題的方法。我有一種感覺，它與每次繪製時分配一定的時間有關，但我不知道如何正確實現這樣的功能。有什麼建議麼？順便說一句，tryed硬件交流，抗等

這是啓動surfaceview類：

package com.example.glassrunner; 

Imports Here 

public class Game extends Activity 
{ 



MySurfaceView mySurfaceView; 
public SoundPool spool; 
private int soundID; 
int length=0; 


/** Called when the activity is first created. */ 

@Override 
public void onCreate(Bundle savedInstanceState) 
{ 
    super.onCreate(savedInstanceState); 
    requestWindowFeature(Window.FEATURE_NO_TITLE); 

    this.setVolumeControlStream(AudioManager.STREAM_MUSIC); 






    mySurfaceView = new MySurfaceView(this); 

    setContentView(mySurfaceView); 


} 



@Override 
protected void onResume() 
{ 
    // TODO Auto-generated method stub 
    super.onResume(); 

    mySurfaceView.onResumeMySurfaceView(); 

} 

@Override 
protected void onPause() 
{ 
    // TODO Auto-generated method stub 
    super.onPause(); 
    mySurfaceView.onPauseMySurfaceView(); 
} 

@Override 
protected void onDestroy() 
{ 
    super.onDestroy(); 
    mySurfaceView = null; 
} 



} 

這是surfaceview類：

package com.example.glassrunner; 

Imports here 

public class MySurfaceView extends SurfaceView implements Runnable 
{ 
public static boolean gameOver = false; 

SurfaceHolder surfaceHolder; 

Thread thread = null; 



public Integer score=0; 


public SoundPool spool; 
private int soundID; 
int length=0; 
public static MediaPlayer mp; 

volatile boolean running = false; 
int Yposition = 450; 
int Xposition = 50; 

Paint textPaint; 
long mLastTime;  
Bitmap background; 
Bitmap background2; 
Bitmap lines; 
Bitmap runSprite; 
Bitmap box; 

Paint bitmapPaint ; 
Paint textPaint2; 
Bitmap scaledBackground ; 
Bitmap scaledBackground2 ; 
Bitmap scaledLines ; 
Bitmap scaledBox; 
Canvas canvas; 
Paint paint; 
int SpX=0; 
int SpY=0; 
Bitmap[][] sprite; 



/** Variables for the counter */ 
int frameSamplesCollected = 0; 
int frameSampleTime = 0; 
int fps = 0; 
int speed = 5; 

Toast GameOverToast; 

Context context; 
MediaPlayer mMediaPlayer; 

public MySurfaceView(Context context) 
{ 
    super(context); 
    this.context = context; 
    // TODO Auto-generated constructor stub 
    surfaceHolder = getHolder(); 
    surfaceHolder.setFormat(PixelFormat.RGB_565); 

    CharSequence text = "Game Over!"; 
    int duration = Toast.LENGTH_SHORT; 
    GameOverToast = Toast.makeText(context, text, duration); 
    spool = new SoundPool(10, AudioManager.STREAM_MUSIC, 0); 
    soundID = spool.load(context, R.raw.jump, 1); 
    mp = MediaPlayer.create(context, R.raw.saturdaymorningfunk); 




    initialization(); 
} 

public void initialization() 
{ 


    mp.setLooping(true); 
    mp.start(); 



    Options options = new Options();  
    options.inSampleSize = 1/4; 
    options.inPreferredConfig = Bitmap.Config.RGB_565; 


    background=BitmapFactory.decodeResource(getResources(),R.drawable.background,options); 
    lines=BitmapFactory.decodeResource(getResources(),R.drawable.lines);// getting the png from drawable folder 
    background2=BitmapFactory.decodeResource(getResources(),R.drawable.background2,options); 
    runSprite=BitmapFactory.decodeResource(getResources(),R.drawable.runsprite); 
    box=BitmapFactory.decodeResource(getResources(),R.drawable.box); 
    bitmapPaint = new Paint(Paint.ANTI_ALIAS_FLAG); // tool for painting on the canvas 
    bitmapPaint.setAntiAlias(true); 
    bitmapPaint.setFilterBitmap(true); 



    textPaint = new Paint(); 
    textPaint.setColor(Color.RED); 
    textPaint.setTextSize(32); 
    textPaint2 = new Paint(); 
    textPaint2.setColor(Color.BLUE); 
    textPaint2.setTextSize(50); 



    scaledBackground = Bitmap.createScaledBitmap(background, 2560, 500, true); 
    scaledBackground2 = Bitmap.createScaledBitmap(background2, 2560, 400, true); 
    scaledLines = Bitmap.createScaledBitmap(lines, 2560, 30, true); 
    runSprite = Bitmap.createScaledBitmap(runSprite, 1400, 1000, true); 
    scaledBox = Bitmap.createScaledBitmap(box, 100, 100, true); 


    sprite = new Bitmap[4][7]; 





    for(int row=0;row<=3;row++) 
    { 

     for(int col=0;col<=6;col++) 
     { 
      sprite[row][col] = Bitmap.createBitmap(runSprite, SpX, SpY, 200, 250); 
      SpX+=200; 
     } 
     SpX=0; 
     SpY+=250; 





    } 
} 

public void onResumeMySurfaceView() 
{ 
    mp.seekTo(length); 
    mp.start(); 
    running = true; 
    thread = new Thread(this); 
    thread.start(); 





} 

public void onPauseMySurfaceView() 
{ 
    mp.pause(); 
    length=mp.getCurrentPosition(); 
    boolean retry = true; 
    running = false; 
    while(retry){ 
     try { 
      thread.join(); 

      retry = false; 
     } catch (InterruptedException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 
    } 


} 

public void onDestroyMySurfaceView() 
{ 

    mp.stop(); 
    running = false; 
    thread = null; 
    thread.stop(); 



} 


private void fps() 
{ 
    long now = System.currentTimeMillis(); 

    if (mLastTime != 0) 
    { 

     //Time difference between now and last time we were here 
     int time = (int) (now - mLastTime); 
     frameSampleTime += time; 
     frameSamplesCollected++; 

     //After 10 frames 
     if (frameSamplesCollected == 10) 
     { 

      //Update the fps variable 
      fps = (int) (10000/frameSampleTime); 

      //Reset the sampletime + frames collected 
      frameSampleTime = 0; 
      frameSamplesCollected = 0; 
     } 

    } 

    mLastTime = now; 
} 
public boolean pressDown = false; 
public long pressTime; 
public boolean onTouchEvent(MotionEvent event) 
{ 

    if (event != null) 
    { 

     if (event.getAction() == MotionEvent.ACTION_DOWN) 
     { if(Yposition == orgPos) 
     { 
      spool.play(soundID, 15, 15, 1, 0, 1f); 
      pressDown = true; 
      pressTime = System.currentTimeMillis(); 
     } 


     }else if (event.getAction() == MotionEvent.ACTION_UP) 
     { 
      pressDown = false; 
     } 
    } 

    return true; 
} 

int x=0; 
int y=100; 
int x2=0; 
int y2=20; 
int row=0; 
int col=0; 
int limit = 100; 
int orgPos = 450; 
int Xbox = 1280; 
int Ybox = 580; 
Random r = new Random(); 
int RBox; 

public static String Fscore; 

boolean onTop = false; 
long now; 

long start; 
long stop; 
long time ; 

int spritePosition = 0 ; 
int spriteSize; 

@Override 
public void run() 
{ 



    while(running) 
    { 
     canvas = null; 


     if(surfaceHolder.getSurface().isValid()) 
     { 
      canvas = surfaceHolder.lockCanvas(); 


      fps(); // fps 

      // Update screen parameters 
      update(); 
      draw(); 
      surfaceHolder.unlockCanvasAndPost(canvas); 

     } 
    } 
} 

public void update() 
{ 

    if(score<500) 
    { 
     speed = 7; 
    } 
    else if(score%500 == 0) 
    { 
     speed = 7 + (score/500); 
    } 
    if(col==6) 
    { 
     row++; 
     col=0; 
    } 
    if(row==4) 
    { 
     row=0; 

    } 

    score++; 
    Fscore = score.toString(); 

    if(x>-1280) 
    { 
     x-=speed; 
    }else if(x<=-1280) 
    { 
     x=0; 
    } 

    if(x2>-1280) 
    { 
     x2-=5; 
    }else if(x2<=-1280) 
    { 
     x2=-0; 
    } 

    RBox = r.nextInt(999)+1280; 

    if(Xbox > -100) 
    { 
     Xbox-=speed; 
    }else if(Xbox<=-100) 
    { 
     Xbox=RBox; 
    } 
    if((Xposition + 200 == Xbox +40)&&(Yposition + 250 > Ybox+20)||(Xposition+200<=Xbox+70)&&(Xposition+200>=Xbox+20)&&(Yposition + 250 > Ybox+30)) // collision 
    { 
     GameOverToast.show(); 

     running = false; 



     spool.release(); 
     mp.release(); 
     Looper.prepare(); 
     Intent database = new Intent(context, MainHighscore.class); 
     database.putExtra("score", Fscore); 
     context.startActivity(database); 


     onDestroyMySurfaceView(); 



    } 






    now = System.currentTimeMillis(); 
    if((now - pressTime) <= 600) 
    { 
     if(Yposition > limit) 
     { 
      Yposition -= 10; 
     } 
    } 
    onTop = false; 

    if((now - pressTime) >= 600 && (now - pressTime) <= 1200) 
    { 
     if(!(Yposition == orgPos)) 
     { 


      if(Yposition+250 >= Ybox && Xposition+200>=Xbox+70 && Xposition <= Xbox+40) 
      { 
       onTop=true; 
       Yposition = 340; 
      }else 
      { 
       Yposition += 10; 
      } 
     } 


    } 
    if((now - pressTime) >= 1200) 
    { 

     if(Yposition < 450) Yposition +=10; 
     else Yposition = 450; 

    } 







} 
public void draw() 
{ 

    canvas.drawColor(Color.WHITE); 
    //canvas.drawBitmap(scaledBackground, x2,y2, bitmapPaint); 
    canvas.drawBitmap(scaledBackground2, x,y, bitmapPaint); 
    canvas.drawBitmap(scaledLines, x,650, bitmapPaint); 
    canvas.drawText(Fscore, 1050, 50, textPaint2); 
    canvas.drawText(fps + " fps", getWidth()/2, getHeight()/2, textPaint); 
    canvas.drawBitmap(sprite[row][col],Xposition,Yposition,bitmapPaint); 
    canvas.drawBitmap(scaledBox,Xbox,Ybox,bitmapPaint); 

    col++; 
} 


} 

Answer 1

我認爲你的問題可能是實際的移動部分。你只是繪製了太多的東西，而surfaceView並不是爲此而設計的。