android-独自开启闪光灯方法-适用于moto手机

代码来自于http://code.google.com/p/search-light/

不同类别的手机开启闪光灯的方法不一定相同,下面的代码适用于mb525,其他的手机我还没有试过.

package com.wjh.myset;import java.io.PrintStream;import java.lang.reflect.Method;import android.os.IBinder;public class MyFlashLight {	 private Object svc = null;     private Method getFlashlightEnabled = null;     private Method setFlashlightEnabled = null;     @SuppressWarnings("unchecked")     public MyFlashLight() throws Exception{             try {                     // call ServiceManager.getService("hardware") to get an IBinder for the service.                     // this appears to be totally undocumented and not exposed in the SDK whatsoever.                     Class sm = Class.forName("android.os.ServiceManager");                     Object hwBinder = sm.getMethod("getService", String.class).invoke(null, "hardware");                     // get the hardware service stub. this seems to just get us one step closer to the proxy                     Class hwsstub = Class.forName("android.os.IHardwareService$Stub");                     Method asInterface = hwsstub.getMethod("asInterface", android.os.IBinder.class);                     svc = asInterface.invoke(null, (IBinder) hwBinder);                     // grab the class (android.os.IHardwareService$Stub$Proxy) so we can reflect on its methods                     Class proxy = svc.getClass();                     // save methods                     getFlashlightEnabled = proxy.getMethod("getFlashlightEnabled");                     setFlashlightEnabled = proxy.getMethod("setFlashlightEnabled", boolean.class);             }             catch(Exception e) {                     throw new Exception("LED could not be initialized");             }     }     public boolean isEnabled() {             try {                     return getFlashlightEnabled.invoke(svc).equals(true);             }             catch(Exception e) {                     return false;             }     }     public void enable(boolean tf) {             try {                     setFlashlightEnabled.invoke(svc, tf);             }             catch(Exception e) {}     }}