在子线程里面高刷调用canvas.drawPixelMapHolderRect;画图，然后模拟机闪退,请请帮帮忙怎么弄？

@Override
    public void run() {
        isFirstRun = true;
        init();
        while (isRunning) {
            //游戏暂停
//            if (!isPause()) {
//                myLogic();
//            }
            long startTime = System.currentTimeMillis();
            myDraw();
            long endTime = System.currentTimeMillis();
            long time = endTime - startTime;
            if (time < 1000/35) {
                try {
                    Thread.sleep(1000/35 - time);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            //刷新UI
            TaskDispatcher uiTaskDispatcher = context.getUITaskDispatcher();
            uiTaskDispatcher.asyncDispatch(() -> this.invalidate());
        }
    }
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  //画出游戏界面
    private void myDraw() {
        try {
            tiledLayer_cover.draw(lockCanvas);
            tiledLayer_peng01.draw(lockCanvas);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (lockCanvas != null){
//                holder.unlockCanvasAndPost(lockCanvas);
            }

        }
    }
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public void draw(Canvas canvas) {
        for (int i = 0; i < getRows(); i++) {
            for (int j = 0; j < getCols(); j++) {
                int tiledIndex = getTiledCell(j,i);
                if (tiledIndex == 0) {
                    continue;
                }
                int x = mTiledX[tiledIndex];
                int y = mTiledY[tiledIndex];
                int ix = getX() + j * getWidth();
                int iy = getY() + i * getHeight();
                mSrc = new RectFloat(x, y, x + getWidth(), y + getHeight());
                mDest = new RectFloat(ix,iy , ix+getWidth(), iy + getHeight());
                canvas.drawPixelMapHolderRect(mBitmap,mSrc,mDest,paint);
            }
        }
    }
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