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我出現錯誤：「FATAL EXCEPTION：thread-186」在對代碼的這部分做了一些更改之後：我正在使用線程，surfaceHolder，surfaceView發生致命錯誤：已知並且無法找出它
public void run() {
long stepPerSecond=1000/FPS;
long startTime;
long sleepTime;
while(isRunning){
turned=false;
Canvas c= null;
startTime=System.currentTimeMillis();
try{
prevStep=new Snake(snake);
c=this.getHolder().lockCanvas();
synchronized (this.getHolder()) {
this.onDraw(c);
}
}
catch(Exception e){
}
finally{
if(c!=null&&!turned){
this.getHolder().unlockCanvasAndPost(c);
}
if(turned){
snake= new Snake(prevStep);
try{
synchronized (this.getHolder()) {
this.onDraw(c);
}
}
catch(Exception e){
}
finally{
if(c!=null){
this.getHolder().unlockCanvasAndPost(c);
turned=false;
}
}
}
sleepTime= stepPerSecond-(System.currentTimeMillis()-startTime);
if(sleepTime>0)
try {
Thread.sleep(sleepTime);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
else
try {
Thread.sleep(10);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
這裏是整體的一部分：
package com.example.snake;
import java.util.ArrayList;
import java.util.List;
@SuppressLint("WrongCall")
public class GameView1 extends SurfaceView implements Runnable {
private boolean isRunning=false;
private final long FPS=10;
private Bitmap bmp;
private SurfaceHolder holder;
private Thread gamethread;
//private int x=0;
//private long clickOnSprite;
Snake snake;
Snake prevStep;
boolean turned;
private List<Sprite> sprites=new ArrayList<Sprite>();
public GameView1(Context context) {
super(context);
gamethread=new Thread(this);
holder= getHolder();
holder.addCallback(new SurfaceHolder.Callback(){
@Override
public void surfaceCreated(SurfaceHolder arg0) {
setRunning(true);
gamethread.start();
}
@Override
public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2,int arg3) {
}
@Override
public void surfaceDestroyed(SurfaceHolder arg0) {
setRunning(false);
while(true){
try {
gamethread.join();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
});
// bmp=BitmapFactory.decodeResource(getResources(), R.drawable.image);
snake=new Snake(20, 50, "RIGHT");
}
@Override
protected void onDraw(Canvas canvas) {
// TODO Auto-generated method stub
super.onDraw(canvas);
canvas.drawColor(Color.BLUE);
snake.onDraw(canvas);
//canvas.drawBitmap(bmp, x, 10, null);
}
/*public boolean onTouchEvent(MotionEvent event){
if(System.currentTimeMillis()-clickOnSprite>300){
clickOnSprite=System.currentTimeMillis();
for (int i=0;i<sprites.size();i++){
Sprite s=sprites.get(i);
synchronized (getHolder()) {
if(s.isCollition(event.getX(), event.getY())){
sprites.remove(s);
break;
}
}
}
}
return true;
}
*/
@Override
public void run() {
long stepPerSecond=1000/FPS;
long startTime;
long sleepTime;
while(isRunning){
turned=false;
Canvas c= null;
startTime=System.currentTimeMillis();
try{
prevStep=new Snake(snake);
c=this.getHolder().lockCanvas();
synchronized (this.getHolder()) {
this.onDraw(c);
}
}
catch(Exception e){
}
finally{
if(c!=null&&!turned){
this.getHolder().unlockCanvasAndPost(c);
}
if(turned){
snake= new Snake(prevStep);
try{
synchronized (this.getHolder()) {
this.onDraw(c);
}
}
catch(Exception e){
}
finally{
if(c!=null){
this.getHolder().unlockCanvasAndPost(c);
turned=false;
}
}
}
sleepTime= stepPerSecond-(System.currentTimeMillis()-startTime);
if(sleepTime>0)
try {
Thread.sleep(sleepTime);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
else
try {
Thread.sleep(10);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
public void setRunning(boolean b){
isRunning=b;
}
public boolean isTurned() {
return turned;
}
public void setTurned(boolean turned) {
this.turned = turned;
}
}
這裏的錯誤：
01-12 19:03:20.375: E/AndroidRuntime(6088): FATAL EXCEPTION: Thread-186
01-12 19:03:20.375: E/AndroidRuntime(6088): java.lang.IllegalArgumentException
01-12 19:03:20.375: E/AndroidRuntime(6088): at android.view.Surface.nativeUnlockCanvasAndPost(Native Method)
01-12 19:03:20.375: E/AndroidRuntime(6088): at android.view.Surface.unlockCanvasAndPost(Surface.java:462)
01-12 19:03:20.375: E/AndroidRuntime(6088): at android.view.SurfaceView$4.unlockCanvasAndPost(SurfaceView.java:812)
01-12 19:03:20.375: E/AndroidRuntime(6088): at com.example.snake.GameView1.run(GameView1.java:138)
01-12 19:03:20.375: E/AndroidRuntime(6088): at java.lang.Thread.run(Thread.java:856)
01-12 19:03:24.245: I/Process(6088): Sending signal. PID: 6088 SIG: 9
我找不出WH當我在調試模式下，事件當我使用調試模式，沒有停止