android 调节屏幕亮度，android屏幕亮度,public void

android 调节屏幕亮度，android屏幕亮度,public void

public void setBrightness(int level) { ContentResolver cr = getContentResolver(); Settings.System.putInt(cr, "screen_brightness", level); Window window = getWindow(); LayoutParams attributes = window.getAttributes(); float flevel = level; attributes.screenBrightness = flevel / 255; getWindow().setAttributes(attributes); }