/*
?*?Copyright?（C）?2017?The?Android?Open?Source?Project
?*
?*?Licensed?under?the?Apache?License?Version?2.0?（the?“License“）;
?*?you?may?not?use?this?file?except?in?compliance?with?the?License.
?*?You?may?obtain?a?copy?of?the?License?at
?*
?*??????http://www.apache.org/licenses/LICENSE-2.0
?*
?*?Unless?required?by?applicable?law?or?agreed?to?in?writing?software
?*?distributed?under?the?License?is?distributed?on?an?“AS?IS“?BASIS
?*?WITHOUT?WARRANTIES?OR?CONDITIONS?OF?ANY?KIND?either?express?or?implied.
?*?See?the?License?for?the?specific?language?governing?permissions?and
?*?limitations?under?the?License.
?*/

package?android.accessibilityservice;

import?android.annotation.NonNull;
import?android.os.Handler;
import?android.os.Looper;
import?android.os.RemoteException;
import?android.util.ArrayMap;
import?android.util.Slog;

import?com.android.internal.util.Preconditions;

/**
?*?Controller?for?the?accessibility?button?within?the?system‘s?navigation?area
?*?

?*?This?class?may?be?used?to?query?the?accessibility?button‘s?state?and?register
?*?callbacks?for?interactions?with?and?state?changes?to?the?accessibility?button?when
?*?{@link?AccessibilityServiceInfo#FLAG_REQUEST_ACCESSIBILITY_BUTTON}?is?set.
?*?

?*?

?*?Note:?This?class?and
?*?{@link?AccessibilityServiceInfo#FLAG_REQUEST_ACCESSIBILITY_BUTTON}?should?not?be?used?as
?*?the?sole?means?for?offering?functionality?to?users?via?an?{@link?AccessibilityService}.
?*?Some?device?implementations?may?choose?not?to?provide?a?software-rendered?system
?*?navigation?area?making?this?affordance?permanently?unavailable.
?*?

?*?

?*?Note:?On?device?implementations?where?the?accessibility?button?is
?*?supported?it?may?not?be?available?at?all?times?such?as?when?a?foreground?application?uses
?*?{@link?android.view.View#SYSTEM_UI_FLAG_HIDE_NAVIGATION}.?A?user?may?also?choose?to?assign
?*?this?button?to?another?accessibility?service?or?feature.?In?each?of?these?cases?a
?*?registered?{@link?AccessibilityButtonCallback}‘s
?*?{@link?AccessibilityButtonCallback#onAvailabilityChanged（AccessibilityButtonController?boolean）}
?*?method?will?be?invoked?to?provide?notifications?of?changes?in?the?accessibility?button‘s
?*?availability?to?the?registering?service.
?*?

?*/
public?final?class?AccessibilityButtonController?{
????private?static?final?String?LOG_TAG?=?“A11yButtonController“;

????private?final?IAccessibilityServiceConnection?mServiceConnection;
????private?final?object?mLock;
????private?ArrayMap?mCallbacks;

????AccessibilityButtonController（@NonNull?IAccessibilityServiceConnection?serviceConnection）?{
????????mServiceConnection?=?serviceConnection;
????????mLock?=?new?object（）;
????}

????/**
?????*?Retrieves?whether?the?accessibility?button?in?the?system‘s?navigation?area?is
?????*?available?to?the?calling?service.
?????*?

?????*?Note:?If?the?service?is?not?yet?connected?（e.g.
?????*?{@link?Acce

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2019-09-17?12:15??android-29\
?????目錄???????????0??2019-09-17?12:15??android-29\android\
?????目錄???????????0??2019-09-17?12:15??android-29\androidx\
?????目錄???????????0??2019-09-17?12:15??android-29\androidx\multidex\
?????文件???????34921??2019-09-17?12:15??android-29\androidx\multidex\MultiDex.java
?????文件????????1399??2019-09-17?12:15??android-29\androidx\multidex\MultiDexApplication.java
?????文件???????17397??2019-09-17?12:15??android-29\androidx\multidex\MultiDexExtractor.java
?????文件????????2039??2019-09-17?12:15??android-29\androidx\multidex\MultiDexTest.java
?????文件????????4445??2019-09-17?12:15??android-29\androidx\multidex\ZipEntryReader.java
?????文件????????4428??2019-09-17?12:15??android-29\androidx\multidex\ZipUtil.java
?????文件????????6543??2019-09-17?12:15??android-29\androidx\multidex\ZipUtilTest.java
?????目錄???????????0??2019-09-17?12:15??android-29\androidx\renderscript\
?????文件??????132701??2019-09-17?12:15??android-29\androidx\renderscript\Allocation.java
?????文件????????4136??2019-09-17?12:15??android-29\androidx\renderscript\baseObj.java
?????文件?????????981??2019-09-17?12:15??android-29\androidx\renderscript\Byte2.java
?????文件????????1031??2019-09-17?12:15??android-29\androidx\renderscript\Byte3.java
?????文件????????1080??2019-09-17?12:15??android-29\androidx\renderscript\Byte4.java
?????文件????????1000??2019-09-17?12:15??android-29\androidx\renderscript\Double2.java
?????文件????????1054??2019-09-17?12:15??android-29\androidx\renderscript\Double3.java
?????文件????????1107??2019-09-17?12:15??android-29\androidx\renderscript\Double4.java
?????文件???????33037??2019-09-17?12:15??android-29\androidx\renderscript\Element.java
?????文件???????21881??2019-09-17?12:15??android-29\androidx\renderscript\FieldPacker.java
?????文件?????????989??2019-09-17?12:15??android-29\androidx\renderscript\Float2.java
?????文件????????1040??2019-09-17?12:15??android-29\androidx\renderscript\Float3.java
?????文件????????1092??2019-09-17?12:15??android-29\androidx\renderscript\Float4.java
?????文件?????????973??2019-09-17?12:15??android-29\androidx\renderscript\Int2.java
?????文件????????1021??2019-09-17?12:15??android-29\androidx\renderscript\Int3.java
?????文件????????1068??2019-09-17?12:15??android-29\androidx\renderscript\Int4.java
?????文件?????????978??2019-09-17?12:15??android-29\androidx\renderscript\Long2.java
?????文件????????1028??2019-09-17?12:15??android-29\androidx\renderscript\Long3.java
?????文件????????1077??2019-09-17?12:15??android-29\androidx\renderscript\Long4.java
............此處省略12371個文件信息