android的Home键的监听封装工具类(一)

android的Home键的监听封装:
 1 package com.gzcivil.utils; 2  3 import android.content.BroadcastReceiver; 4 import android.content.Context; 5 import android.content.Intent; 6 import android.content.IntentFilter; 7  8 /** 9  * Home键监听封装10  * 11  */12 public class HomeListener {13 14     static final String TAG = "HomeListener";15     private Context mContext;16     private IntentFilter mFilter;17     private OnHomePressedListener mListener;18     private InnerRecevier mRecevier;19 20     // 回调接口21     public interface OnHomePressedListener {22         public void onHomePressed();23         public void onHomeLongPressed();24     }25 26     public HomeListener(Context context) {27         mContext = context;28         mFilter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);29     }30 31     /**32      * 设置监听33      * 34      * @param listener35      */36     public void setOnHomePressedListener(OnHomePressedListener listener) {37         mListener = listener;38         mRecevier = new InnerRecevier();39     }40 41     /**42      * 开始监听，注册广播43      */44     public void startWatch() {45         if (mRecevier != null) {46             mContext.registerReceiver(mRecevier, mFilter);47         }48     }49 50     /**51      * 停止监听，注销广播52      */53     public void stopWatch() {54         if (mRecevier != null) {55             mContext.unregisterReceiver(mRecevier);56         }57     }58 59     /**60      * 广播接收者61      */62     class InnerRecevier extends BroadcastReceiver {63         final String SYSTEM_DIALOG_REASON_KEY = "reason";64         final String SYSTEM_DIALOG_REASON_GLOBAL_ACTIONS = "globalactions";65         final String SYSTEM_DIALOG_REASON_RECENT_APPS = "recentapps";66         final String SYSTEM_DIALOG_REASON_HOME_KEY = "homekey";67 68         @Override69         public void onReceive(Context context, Intent intent) {70             String action = intent.getAction();71             if (action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)) {72                 String reason = intent.getStringExtra(SYSTEM_DIALOG_REASON_KEY);73                 if (reason != null) {74                     // Log.e(TAG, "action:" + action + ",reason:" + reason);75                     if (mListener != null) {76                         if (reason.equals(SYSTEM_DIALOG_REASON_HOME_KEY)) {77                             // 短按home键78                             mListener.onHomePressed();79                         } else if (reason.equals(SYSTEM_DIALOG_REASON_RECENT_APPS)) {80                             // 长按home键81                             mListener.onHomeLongPressed();82                         }83                     }84                 }85             }86         }87     }88 }
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