android监听Home键

来源：互联网发布：itertools python 编辑：程序博客网时间：2024/06/05 02:19

将到Android中Home键的监听，很多人第一反应时重写相应Activity的onKeyDown()方法，监听当按下的键的keyCode为KEYCODE_HOME时，进行自己的相应的处理。如：

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

但是这样的监听是不能监听到HOME键的。这样的方法只能监听到BACK,MENU键。那么怎么监听Home键了？

1.新建一个监听Home键的Listener

    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);                 }             }                        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();                                 }                             }                         }                     }                 }             }         }

2.在使用的类的onCreate方法中注册Home键的监听

    /**           * 注册Home键的监听           */            private void registerHomeListener() {                mHomeWatcher = new HomeListener(this);                 mHomeWatcher.setOnHomePressedListener(new OnHomePressedListener() {                                        @Override                    public void onHomePressed() {                        //TODO 进行点击Home键的处理                        Log.i("xsl", "0000000000000");                        stopService(mIntentService);                    }                                        @Override                    public void onHomeLongPressed() {                        //TODO 进行长按Home键的处理                        Log.i("xsl", "0000000000000");                    }                });                mHomeWatcher.startWatch();            }

3.在使用的类的onPause方法中停止监听

mHomeWatcher.stopWatch();

阅读全文

0 0