Android監(jiān)聽Home鍵實例詳解

2020-04-11 10:48:48

字體：大中小

供稿：網(wǎng)友

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(yīng)時重寫相應(yīng)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(yīng)的處理。如：

@Overridepublic 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(diào)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(shè)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