Android 模拟器 如何 调节 屏幕 亮度

在1.6sdk中使用了如下代码，但是模拟器的亮度没有任何改变

private void brightnessMax() {  
    WindowManager.LayoutParams lp = getWindow().getAttributes();  
    lp.screenBrightness = 1.0f;  
    getWindow().setAttributes(lp);  
}

请大虾们帮帮忙咯...拜托...

android模拟器上如何使调整亮度有效


android1.1及以前在模拟器上调整亮度和关闭屏幕没有问题，但自从更新到了1.5版本，这个功能就有问题了，原因是模拟器的模拟机制作了相应的调整。解决方案如下:
首先，利用adb将lights.goldfish.so从sdk中拉出，因为sdk中这个功能可以正常运行，但自己从源代码编译出来的image因为缺乏这个文件就有问题了;
接着,将lights.goldfish.so拷贝至源代码某一目录下；
然后，在这个目录下编写如下makefile:
# Copyright (C) 2009 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


LOCAL_PATH := $(call my-dir)

ifneq ($(TARGET_PRODUCT),sim)
# HAL module implemenation, not prelinked and stored in
# hw/<SENSORS_HARDWARE_MODULE_ID>.<ro.hardware>.so
include $(CLEAR_VARS)

LOCAL_PRELINK_MODULE := false

LOCAL_MODULE_PATH := $(TARGET_OUT_SHARED_LIBRARIES)/hw

LOCAL_MODULE := lights.goldfish.so

LOCAL_MODULE_TAGS := debug

LOCAL_MODULE_CLASS := SHARED_LIBRARIES

LOCAL_SRC_FILES := $(LOCAL_MODULE)

include $(BUILD_PREBUILT)
endif
最后，编译源代码。
 
运行模拟器，是不是发现调整亮度和关闭屏幕功能是不是又恢复正常了。