【Android】Android处理Home键方法小结

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：frameworkPhoneWindowManager.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

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