Android------调用闪光灯当手电筒

拷贝到 在src目录下建立 android.os 包 并新建IHardwareService.aidl 文件

IHardwareService.aidl 文件

package android.os;  

/** {@hide} */  
interface IHardwareService  
{  
    // obsolete flashlight support  
    boolean getFlashlightEnabled();  
    void setFlashlightEnabled(boolean on);  
}

Activity

package com.yf210yf.flashlight;

import java.lang.reflect.Method;

import android.app.Activity;
import android.os.Bundle;
import android.os.IBinder;
import android.os.IHardwareService;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageButton;

public class FlashLightAvtivity extends Activity
{
private ImageButton imageButton;  
private int i = 0;  
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
imageButton = (ImageButton) findViewById(R.id.imageButton);  
 setFlashlightEnabled(false);
 imageButton.setOnClickListener(new OnClickListener()  
     {             
@Override
public void onClick(View v)
{
if (i == 0)  
             {  
 imageButton.setImageResource(R.drawable.light2);  
 setFlashlightEnabled(true);
                 i = 1;  
             } else  
             {  
             imageButton.setImageResource(R.drawable.light1);  
             setFlashlightEnabled(false);
                 i = 0;  
             }
}    
      });  


}

 /** 
     * 设置闪光灯的开启和关闭 
     */  
    private void setFlashlightEnabled(boolean isEnable)  
    {  
        try  
        {  
            Method method = Class.forName("android.os.ServiceManager").getMethod("getService", String.class);  
            IBinder binder = (IBinder) method.invoke(null, new Object[] { "hardware" });  

            IHardwareService localhardwareservice = IHardwareService.Stub.asInterface(binder);  
            localhardwareservice.setFlashlightEnabled(isEnable);  
        }  
        catch (Exception e)  
        {  
            e.printStackTrace();  
        }  

    }  

    public boolean onKeyDown(int kCode,KeyEvent kEvent) 
    { 
    switch(kCode) 
    { 
    case KeyEvent.KEYCODE_BACK: 
     int pid = android.os.Process.myPid() ;
                android.os.Process.killProcess(pid) ;
    return true;  
    } 
    return super.onKeyDown(kCode,kEvent); 
    } 

}

转载请注明出处：CSDN奔跑的蜗牛

效果：