android bootanimation启动和关闭

启动
frameworks/base/cmds/bootanimation/bootanim.rc
service bootanim /system/bin/bootanimation

关闭
WindowManagerService.java
performEnableScreen()

try {
                    IBinder surfaceFlinger = ServiceManager.getService("SurfaceFlinger");
                    if (surfaceFlinger != null) {
                        //Slog.i(TAG_WM, "******* TELLING SURFACE FLINGER WE ARE BOOTED!");
                        Parcel data = Parcel.obtain();
                        data.writeInterfaceToken("android.ui.ISurfaceComposer");
                        surfaceFlinger.transact(IBinder.FIRST_CALL_TRANSACTION, // BOOT_FINISHED
                                data, null, 0);
                        data.recycle();
                    }
                } catch (RemoteException ex) {
                    Slog.e(TAG_WM, "Boot completed: SurfaceFlinger is dead!");
                }

ISurfaceComposer.cpp

        case BOOT_FINISHED: {
            CHECK_INTERFACE(ISurfaceComposer, data, reply);
            bootFinished();
            return NO_ERROR;
        }

    virtual void bootFinished()
    {
        Parcel data, reply;
        data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
        remote()->transact(BnSurfaceComposer::BOOT_FINISHED, data, &reply);
    }

frameworks/native/services/surfaceflinger/SurfaceFlinger.cpp

void SurfaceFlinger::bootFinished()
	// stop boot animation
    // formerly we would just kill the process, but we now ask it to exit so it
    // can choose where to stop the animation.
    property_set("service.bootanim.exit", "1");