动态壁纸采摘器Android3.0中的IllegalArgumentException同时旋转装置

Question

我正在为蜂窝3.0开发一个实时墙纸，但是我得到了一个随机错误。

当我在壁纸选择器(有“设置墙纸”和“设置.”的窗口按钮，以了解)和现场墙纸显示，如果我旋转设备，壁纸应该重新加载的配置适应新的方向。有时候它会，有时它会崩溃。

这个错误在某种程度上与BaseSurfaceHolder.unlockCanvasAndPost方法有关，但我真的不知道这是问题所在。我认为它不能正确地加载一些资源。

下面是错误日志：

07-21 16:07:38.490: WARN/WindowManager(292): java.lang.IllegalArgumentException: Requested window android.os.BinderProxy@40d19f28 does not exist
07-21 16:07:38.490: WARN/WindowManager(292):     at com.android.server.wm.WindowManagerService.windowForClientLocked(WindowManagerService.java:6731)
07-21 16:07:38.490: WARN/WindowManager(292):     at com.android.server.wm.WindowManagerService.windowForClientLocked(WindowManagerService.java:6722)
07-21 16:07:38.490: WARN/WindowManager(292):     at com.android.server.wm.WindowManagerService.removeWindow(WindowManagerService.java:2414)
07-21 16:07:38.490: WARN/WindowManager(292):     at com.android.server.wm.Session.remove(Session.java:149)
07-21 16:07:38.490: WARN/WindowManager(292):     at android.view.IWindowSession$Stub.onTransact(IWindowSession.java:120)
07-21 16:07:38.490: WARN/WindowManager(292):     at com.android.server.wm.Session.onTransact(Session.java:111)
07-21 16:07:38.490: WARN/WindowManager(292):     at android.os.Binder.execTransact(Binder.java:320)
07-21 16:07:38.490: WARN/WindowManager(292):     at dalvik.system.NativeStart.run(Native Method)
07-21 16:07:38.490: ERROR/AndroidRuntime(20768): FATAL EXCEPTION: main
07-21 16:07:38.490: ERROR/AndroidRuntime(20768): java.lang.IllegalArgumentException
07-21 16:07:38.490: ERROR/AndroidRuntime(20768):     at android.view.Surface.unlockCanvasAndPost(Native Method)
07-21 16:07:38.490: ERROR/AndroidRuntime(20768):     at com.android.internal.view.BaseSurfaceHolder.unlockCanvasAndPost(BaseSurfaceHolder.java:215)
07-21 16:07:38.490: ERROR/AndroidRuntime(20768):     at mx.livewallpaper.clock.CubeWallpaper1$CubeEngine.drawFrame(CubeWallpaper1.java:686)
07-21 16:07:38.490: ERROR/AndroidRuntime(20768):     at mx.livewallpaper.clock.CubeWallpaper1$CubeEngine$1.run(CubeWallpaper1.java:292)
07-21 16:07:38.490: ERROR/AndroidRuntime(20768):     at android.os.Handler.handleCallback(Handler.java:587)
07-21 16:07:38.490: ERROR/AndroidRuntime(20768):     at android.os.Handler.dispatchMessage(Handler.java:92)
07-21 16:07:38.490: ERROR/AndroidRuntime(20768):     at android.os.Looper.loop(Looper.java:132)
07-21 16:07:38.490: ERROR/AndroidRuntime(20768):     at android.app.ActivityThread.main(ActivityThread.java:4028)
07-21 16:07:38.490: ERROR/AndroidRuntime(20768):     at java.lang.reflect.Method.invokeNative(Native Method)
07-21 16:07:38.490: ERROR/AndroidRuntime(20768):     at java.lang.reflect.Method.invoke(Method.java:491)
07-21 16:07:38.490: ERROR/AndroidRuntime(20768):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:844)
07-21 16:07:38.490: ERROR/AndroidRuntime(20768):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:602)
07-21 16:07:38.490: ERROR/AndroidRuntime(20768):     at dalvik.system.NativeStart.main(Native Method)
07-21 16:07:38.500: ERROR/android.os.Debug(292): Dumpstate > /data/log/dumpstate_app_error

编辑:下面的代码是第686行中的drawFrame()方法：

void drawFrame() {
            final SurfaceHolder holder = getSurfaceHolder();

            Canvas c = null;
            try {
                c = holder.lockCanvas();
                if (c != null) {

                    drawLogo3(c);
                }
            } finally {
                if (c != null) holder.unlockCanvasAndPost(c);
            }

这是所有活壁纸中的默认方法，我从Android的CubeWallpaper live壁纸样本中获取。

编辑2：

听起来像是缓冲区错误。如果我将框架设置为10 set而不是40 set，那么活壁纸Picker根本不会崩溃。是否可以编辑活壁纸行为仅为活动“活壁纸拾荒者”？

Answer 1

在破坏表面之前让线程连接

@Override
public void onSurfaceDestroyed(SurfaceHolder holder)
{
    try 
    {
        updater.join();
    } 
    catch (InterruptedException e) 
    {

    }
    super.onSurfaceDestroyed(holder);
}

Answer 2

当你改变设备的方向时，函数"onsurfacechange()“called.you必须做一些事情。我猜当你改变方向时，”表面保持器“也改变了。我这样做：

@Override
        public void onSurfaceChanged(SurfaceHolder holder, int format,
                int width, int height) {
                        int lockwidth = 0;
            int lockheight = 0;
            mholder = holder;
            try {

                canvas = mholder.lockCanvas();
                lockwidth = canvas.getWidth();
                lockheight = canvas.getHeight();
                if (width > height) {
                    Utils.Width = lockheight;
                    Utils.screenWidth = lockheight;
                    Utils.screenHeight = lockwidth;
                    Utils.isWidth = true;
                    if (width == 1280 && height == 720 && lockwidth == 800
                            && lockheight == 480) {
                        Utils.screenWidth = 480;
                        Utils.screenHeight = 854;
                    }
                } else {
                    Utils.Width = lockwidth;
                    Utils.screenWidth = lockwidth;
                    Utils.screenHeight = lockheight;
                    Utils.isWidth = false;
                    if (width == 720 && height == 1280 && lockwidth == 480
                            && lockheight == 800) {
                        Utils.screenWidth = 480;
                        Utils.screenHeight = 854;
                    }
                }
                mholder.unlockCanvasAndPost(canvas);
            } catch (Exception e) {
            }
            Utils.rateX = (float) Utils.Width / (float) Utils.FLA_Width;
            Utils.ratio = Utils.screenWidth / Utils.FLA_Width;
            Utils.Width = lockwidth;
            Utils.Height = lockheight;
        }