android 设置系统屏幕亮度
/** * 获得当前屏幕亮度的模式 * SCREEN_BRIGHTNESS_MODE_AUTOMATIC=1 为自动调节屏幕亮度 * SCREEN_BRIGHTNESS_MODE_MANUAL=0 为手动调节屏幕亮度 */ private int getScreenMode() { int screenMode = 0; try { screenMode = Settings.System.getInt(getContentResolver(), Settings.System.SCREEN_BRIGHTNESS_MODE); } catch (Exception localException) { } return screenMode; } /** * 获得当前屏幕亮度值 0--255 */ private int getScreenBrightness() { int screenBrightness = 255; try { screenBrightness = Settings.System.getInt(getContentResolver(), Settings.System.SCREEN_BRIGHTNESS); } catch (Exception localException) { } return screenBrightness; } /** * 设置当前屏幕亮度的模式 * SCREEN_BRIGHTNESS_MODE_AUTOMATIC=1 为自动调节屏幕亮度 * SCREEN_BRIGHTNESS_MODE_MANUAL=0 为手动调节屏幕亮度 */ private void setScreenMode(int paramInt) { try { Settings.System.putInt(getContentResolver(), Settings.System.SCREEN_BRIGHTNESS_MODE, paramInt); } catch (Exception localException) { localException.printStackTrace(); } } /** * 设置当前屏幕亮度值 0--255 */ private void saveScreenBrightness(int paramInt) { try { Settings.System.putInt(getContentResolver(), Settings.System.SCREEN_BRIGHTNESS, paramInt); } catch (Exception localException) { localException.printStackTrace(); } } /** * 保存当前的屏幕亮度值,并使之生效 */ private void setScreenBrightness(int paramInt) { Window localWindow = getWindow(); WindowManager.LayoutParams localLayoutParams = localWindow.getAttributes(); float f = paramInt / 255.0F; localLayoutParams.screenBrightness = f; localWindow.setAttributes(localLayoutParams); }