android捕獲Home鍵

發送廣播 Intent.ACTION_CLOSE_SYSTEM_DIALOGS，開始 Launch Home，根據這點，我們可以監聽廣播：

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class InnerRecevier extends BroadcastReceiver {            staticfinal String SYSTEM_DIALOG_REASON_KEY ="reason";            staticfinal String SYSTEM_DIALOG_REASON_GLOBAL_ACTIONS ="globalactions";            staticfinal String SYSTEM_DIALOG_REASON_RECENT_APPS ="recentapps";            staticfinal String SYSTEM_DIALOG_REASON_HOME_KEY ="homekey";            @Override         publicvoid onReceive(Context context, Intent intent) {             String action = intent.getAction();             if(action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)) {   //監聽廣播                 String reason = intent.getStringExtra(SYSTEM_DIALOG_REASON_KEY);//獲取原因                 if(reason != null) {                     Lg.i("receive action:"+ action + ",reason:"+ reason);                     if(mListener != null) {                         if(reason.equals(SYSTEM_DIALOG_REASON_HOME_KEY)) { // 按 Home                             mListener.onHomePressed();                         }else if(reason.equals(SYSTEM_DIALOG_REASON_RECENT_APPS)) { // 長按 Home                             mListener.onHomeLongPressed();                         }                     }                 }             }         }        }