android-单独开启闪光灯方法--适用于moto手机

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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) {}
     }



}