A seperate thread should not implement/extend SurfaceView or any other view.
You still create your GameView as you had before, but you add a new class called (for example) GameRenderer. This GameRenderer will implement a Thread. The GameRenderer will execute its 'run()' method at some point. This method should contain a 'while' loop, that only stops/pauses when the game is halting (e.g. halt when onPause is called on your activity; stop when onDestroy is called). In the while loop, get hold of the GameView (actually; get hold of a SurfaceHolder from your GameView) lock it and obtain a Canvas from it when you're about to draw onto it. When done, unlock the canvas. Search a little more on these forums and you'll find more info. On Jul 22, 6:15 am, klirr <[email protected]> wrote: > I want to do the drawing in another thread to speed up the game(it is > way to slow right now). I was told to do this but don't quite > understand why that would speed things up. > Is it GameView that should implement Runnable? > Should I make the thread sleep when not drawing? > where should I start the thread? > > package com.android.WWS; > > import android.app.Activity; > import android.content.Context; > import android.graphics.*; > import android.os.Bundle; > import android.view.SurfaceView; > import android.view.KeyEvent; > import android.view.View; > import android.view.View.OnKeyListener; > import java.lang.Runnable; > import java.lang.Thread; > > public class WWS extends Activity { > > @Override > protected void onCreate(Bundle savedInstanceState) { > super.onCreate(savedInstanceState); > GameView gv = new GameView(this); > setContentView(gv); > gv.setOnKeyListener(new OnKeyListener() { > public boolean onKey(View v, int keyCode, KeyEvent event) > { > GameView gv = (GameView) v; > if (keyCode == KeyEvent.KEYCODE_DPAD_UP) { > gv.decrY(3); > v.invalidate(); > } else if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT) { > gv.decrX(3); > v.invalidate(); > } else if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN) { > gv.incrY(3); > v.invalidate(); > } else if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT) { > gv.incrX(3); > v.invalidate(); > } > return true; > } > }); > } > > private static class GameView extends SurfaceView implements > Runnable { > private Paint mPaint = new Paint(); > private int x; > private int y; > > public GameView(Context context) { > super(context); > x = 135; > y = 303; > setWillNotDraw(false); > setFocusable(true); > requestFocus(); > Thread t = new Thread(this); > t.start(); > } > > public void run() {} > > @Override > public void onDraw(Canvas canvas) { > Paint paint = mPaint; > canvas.translate(10, 10); > canvas.drawColor(Color.rgb(184,134,11)); > paint.setColor(Color.rgb(107,142,35)); > paint.setStrokeWidth(1); > canvas.drawRect(x, y, x+30, y+7, paint); > canvas.drawRect(x+10, y+7, x+20, y+27, paint); > canvas.drawRect(x+5, y+27, x+25, y+32, paint); > } > > public void decrY(int length) { > y -= length; > } > > public void incrY(int length) { > y += length; > } > > public void decrX(int length) { > x -= length; > } > > public void incrX(int length) { > x += length; > } > > } > > > > }- Hide quoted text - > > - Show quoted text - --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
