如何简单快速的在应用层调节亮度

下面这段代码只是起到抛砖引玉的作用，你能做的还很多。

<span style="font-family: Comic Sans MS; font-size: 12px;">private void setBrightness(int brightness) { try { Method getServiceMethod = Class.forName("android.os.ServiceManager").getMethod("getService", String.class); IBinder binder = (IBinder) getServiceMethod.invoke(null, new Object[] { "power" }); Method asInterfaceMehod = Class.forName("android.os.IPowerManager$Stub").getMethod("asInterface", new Class[] {IBinder.class}); Object powerMan = asInterfaceMehod.invoke(null, binder); Method setBacklightBrightness = powerMan.getClass().getMethod("setBacklightBrightness", new Class[]{int.class}); setBacklightBrightness.invoke(powerMan, new Object[]{brightness}); } catch (Exception doe) { Log.i(TAG, "setBrightness error"); } }</span>