android的Home键的监听封装工具类(一)

android的Home键的监听封装:

 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();
                         }
                     }
                 }
             }
         }
     }
 }