实验几次之后(android4.1 和android4.2)发现在单个的activity里面有以下几个方法可以使用:
方法1:onSaveInstanceState方法
下面这个方法可以处理home的监听问题。
Java代码protected void onSaveInstanceState(Bundle outState)
但这个方法不是很好,不推荐
方法2:onUserLeaveHint方法
Java代码
@Override protected void onUserLeaveHint() { Log.d("aeon","onUserLeaveHint"); super.onUserLeaveHint(); }
这个方法会在onSaveInstanceState之前执行,根据api的解释,这个方法还比较合适的。
方法3:ACTION_CLOSE_SYSTEM_DIALOGS
在使用广播监听方面可以使用ACTION_CLOSE_SYSTEM_DIALOGS
Java代码
//注册Receiver HomeKeyEventBroadCastReceiver receiver = new HomeKeyEventBroadCastReceiver(); registerReceiver(receiver, new IntentFilter( Intent. ACTION_CLOSE_SYSTEM_DIALOGS));
方法4:framework PhoneWindowManager.java 处理
想要完全监听home键需要在framework层去处理。
/frameworks/base/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
里面去修改private void handleLongPressOnHome() 这个方法。
Java代码
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; } } }
只要把handleLongPressOnHome里面做出相对应的处理就ok