android通过设置ctl.start=bootanim无法启动开机画面的问题

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我们看到log出现了：
init: sys_prop: permission denied uid:1003 name:service.bootanim.exit

然后网上就有人说了
1、修改service.bootanim.exit访问权限
2、修改bootanim服务的用户组ID

#define EXIT_PROP_NAME "service.bootanim.exit"
...
...
bool BootAnimation::threadLoop()
{bool r;// wait for hardware init complete, then start boot animationchar property[PROPERTY_VALUE_MAX];int hwInit;property_get("xxx.hw.init", property, "0");hwInit = atoi(property);if (hwInit == 0) {int exitnow;property_get(EXIT_PROP_NAME, property, "0");exitnow = atoi(property);if (exitnow) {r = false;goto exit;}   return true;}   if (mVideoAdvert) {r = videoAdvert();} else if (mAndroidAnimation) {r = android();} else {r = movie();}   // wait for hardware init complete, then start boot animation
exit:// No need to force exit anymoreproperty_set(EXIT_PROP_NAME, "0");eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);eglDestroyContext(mDisplay, mContext);eglDestroySurface(mDisplay, mSurface);mFlingerSurface.clear();mFlingerSurfaceControl.clear();eglTerminate(mDisplay);IPCThreadState::self()->stopProcess();return r;
}