Android監(jiān)聽Home鍵實例詳解

更新時間：2016年02月16日 11:25:46 作者：lg878398509

這篇文章主要介紹了Android監(jiān)聽Home鍵的方法,結合實例形式詳細分析了Android編程實現(xiàn)監(jiān)聽Home鍵的具體步驟與相關功能代碼,需要的朋友可以參考下

本文實例講述了Android監(jiān)聽Home鍵的方法。分享給大家供大家參考，具體如下：

將到android中Home鍵的監(jiān)聽，很多人第一反應時重寫相應Activity的onKeyDown()方法，監(jiān)聽當按下的鍵的keyCode為KEYCODE_HOME時，進行自己的相應的處理。如：

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
  if (keyCode == KeyEvent.KEYCODE_HOME) {
    stopService(mIntentService);
    return true;
  }
  return super.onKeyDown(keyCode, event);
}

但是這樣的監(jiān)聽是不能監(jiān)聽到HOME鍵的。這樣的方法只能監(jiān)聽到BACK,MENU鍵。那么怎么監(jiān)聽Home鍵了？

1.新建一個監(jiān)聽Home鍵的Listener

public class HomeListener {
  static final String TAG = "HomeListener";
  private Context mContext;
  private IntentFilter mFilter;
  private OnHomePressedListener mListener;
  private InnerRecevier mRecevier;
  // 回調接口
  public interface OnHomePressedListener {
    public void onHomePressed();
    public void onHomeLongPressed();
  }
  public HomeListener(Context context) {
    mContext = context;
    mFilter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
  }
  /**
   * 設置監(jiān)聽
   *
   * @param listener
   */
  public void setOnHomePressedListener(OnHomePressedListener listener) {
    mListener = listener;
    mRecevier = new InnerRecevier();
  }
  /**
   * 開始監(jiān)聽，注冊廣播
   */
  public void startWatch() {
    if (mRecevier != null) {
      mContext.registerReceiver(mRecevier, mFilter);
    }
  }
  /**
   * 停止監(jiān)聽，注銷廣播
   */
  public void stopWatch() {
    if (mRecevier != null) {
      mContext.unregisterReceiver(mRecevier);
    }
  }
  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鍵
              mListener.onHomePressed();
            } else if (reason
                .equals(SYSTEM_DIALOG_REASON_RECENT_APPS)) {
              // 長按home鍵
              mListener.onHomeLongPressed();
            }
          }
        }
      }
    }
  }
}

2.在使用的類的onCreate方法中注冊Home鍵的監(jiān)聽

/**
* 注冊Home鍵的監(jiān)聽
*/
private void registerHomeListener() {
    mHomeWatcher = new HomeListener(this);
    mHomeWatcher.setOnHomePressedListener(new OnHomePressedListener() {
      @Override
      public void onHomePressed() {
        //TODO 進行點擊Home鍵的處理
        Log.i("xsl", "0000000000000");
        stopService(mIntentService);
      }
      @Override
      public void onHomeLongPressed() {
        //TODO 進行長按Home鍵的處理
        Log.i("xsl", "0000000000000");
      }
    });
    mHomeWatcher.startWatch();
}

3.在使用的類的onPause方法中停止監(jiān)聽