Exception locking surface

Exception locking surface
E/SurfaceHolder( 2306): java.lang.IllegalArgumentException
E/SurfaceHolder( 2306): at android.view.Surface.lockCanvasNative(Native Method)
E/SurfaceHolder( 2306): at android.view.Surface.lockCanvas(Surface.java:76)
E/SurfaceHolder( 2306): at android.view.SurfaceView$4.internalLockCanvas(SurfaceView.java:745)
E/SurfaceHolder( 2306): at android.view.SurfaceView$4.lockCanvas(SurfaceView.java:725)
E/SurfaceHolder( 2306): at cn.hz.d9.dsn.views.WelcomeView$ViewDrawThread.run(WelcomeView.java:593)
W/System.err( 2306): java.lang.NullPointerException

public void run() {

            while(flag){
                float Tiem = System.nanoTime();
                Canvas canvas=null;
                try {
                    canvas=surfaceHolder.lockCanvas();
                    synchronized(surfaceHolder){
                        view.draw(canvas);
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }finally{
                    if(canvas!=null)
                    {
                        surfaceHolder.unlockCanvasAndPost(canvas);
                    }
                }

                try {
                    Thread.sleep(timeSleep);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                Dtime = (System.nanoTime() - Tiem)/1000/1000/1000;

            }
        }

可能有surface未释放。需要全局log。转framwork组搞吧。这不一定是你的app引起的。需要总体把握。

你这问题，着实描述的模糊。

额 没写过这个东西，上网查了下貌似最大可能是循环时画布被锁定了把
CSDN移动问答
这个貌似和你的问题很像

canvas=surfaceHolder.lockCanvas();
if(null==canvas){
     continue;
}

加载webview数据时，报了这个错怎么解决？有人遇到过吗？