package com.gzcivil.utils;

 import android.content.BroadcastReceiver;

 import android.content.Context;

 import android.content.Intent;

 import android.content.IntentFilter;

 /**

  * Home键监听封装

  *

  */

 public class HomeListener {

     static final String TAG = "HomeListener";

     private Context mContext;

     private IntentFilter mFilter;

     private OnHomePressedListener mListener;

     private InnerRecevier mRecevier;

     // 回调接口

     public interface OnHomePressedListener {

         public void onHomePressed();

         public void onHomeLongPressed();

     }

     public HomeListener(Context context) {

         mContext = context;

         mFilter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);

     }

     /**

      * 设置监听

      *

      * @param listener

      */

     public void setOnHomePressedListener(OnHomePressedListener listener) {

         mListener = listener;

         mRecevier = new InnerRecevier();

     }

     /**

      * 开始监听，注册广播

      */

     public void startWatch() {

         if (mRecevier != null) {

             mContext.registerReceiver(mRecevier, mFilter);

         }

     }

     /**

      * 停止监听，注销广播

      */

     public void stopWatch() {

         if (mRecevier != null) {

             mContext.unregisterReceiver(mRecevier);

         }

     }

     /**

      * 广播接收者

      */

     class InnerRecevier extends BroadcastReceiver {

         final String SYSTEM_DIALOG_REASON_KEY = "reason";

         final String SYSTEM_DIALOG_REASON_GLOBAL_ACTIONS = "globalactions";

         final String SYSTEM_DIALOG_REASON_RECENT_APPS = "recentapps";

         final String SYSTEM_DIALOG_REASON_HOME_KEY = "homekey";

         @Override

         public void onReceive(Context context, Intent intent) {

             String action = intent.getAction();

             if (action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)) {

                 String reason = intent.getStringExtra(SYSTEM_DIALOG_REASON_KEY);

                 if (reason != null) {

                     // Log.e(TAG, "action:" + action + ",reason:" + reason);

                     if (mListener != null) {

                         if (reason.equals(SYSTEM_DIALOG_REASON_HOME_KEY)) {

                             // 短按home键

                             mListener.onHomePressed();

                         } else if (reason.equals(SYSTEM_DIALOG_REASON_RECENT_APPS)) {

                             // 长按home键

                             mListener.onHomeLongPressed();

                         }

                     }

                 }

             }

         }

     }

 }