昨天需要处理一个问题,需要监听home键。最开始想到使用onKeydonwn这个方法。但是发现home不能这样处理,onKeydonwn可以处理菜单键和back键,但home不能。因为home键是系统键,情况特殊一些。
看了一下网上的资料,说下面的方法可以。(其实不行)
@Override public void onAttachedToWindow() { // TODO Auto-generated method stub Log.d("aeon","onAttachedToWindow"); this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD); super.onAttachedToWindow(); }
<uses-permission android:name="android.permission.DISABLE_KEYGUARD" > </uses-permission>
protected void onSaveInstanceState(Bundle outState)
但这个方法不是很好,不推荐
方法2:onUserLeaveHint方法
@Override protected void onUserLeaveHint() { Log.d("aeon","onUserLeaveHint"); super.onUserLeaveHint(); }
//注册Receiver HomeKeyEventBroadCastReceiver receiver = new HomeKeyEventBroadCastReceiver(); registerReceiver(receiver, new IntentFilter( Intent. ACTION_CLOSE_SYSTEM_DIALOGS));
private void handleLongPressOnHome() { // We can't initialize this in init() since the configuration hasn't been loaded yet. if (mLongPressOnHomeBehavior < 0) { mLongPressOnHomeBehavior = mContext.getResources().getInteger(R.integer.config_longPressOnHomeBehavior); if (mLongPressOnHomeBehavior < LONG_PRESS_HOME_NOTHING || mLongPressOnHomeBehavior > LONG_PRESS_HOME_RECENT_SYSTEM_UI) { mLongPressOnHomeBehavior = LONG_PRESS_HOME_NOTHING; } } if (mLongPressOnHomeBehavior != LONG_PRESS_HOME_NOTHING) { performHapticFeedbackLw(null, HapticFeedbackConstants.LONG_PRESS, false); sendCloseSystemWindows(SYSTEM_DIALOG_REASON_RECENT_APPS); // Eat the longpress so it won't dismiss the recent apps dialog when // the user lets go of the home key mHomeLongPressed = true; } if (mLongPressOnHomeBehavior == LONG_PRESS_HOME_RECENT_DIALOG) { showOrHideRecentAppsDialog(RECENT_APPS_BEHAVIOR_SHOW_OR_DISMISS); } else if (mLongPressOnHomeBehavior == LONG_PRESS_HOME_RECENT_SYSTEM_UI) { try { IStatusBarService statusbar = getStatusBarService(); if (statusbar != null) { statusbar.toggleRecentApps(); } } catch (RemoteException e) { Slog.e(TAG, "RemoteException when showing recent apps", e); // re-acquire status bar service next time it is needed. mStatusBarService = null; } } }