暂存应用程序.... 解析包时出现问题

Question

我制作了一个应用程序Ave，它通过我的网站下载ave.apk 包进行更新。该应用程序允许从未知来源安装。多年来一直运行良好。

更新过程在 Android 4.4 和 Andoid 9 中仍然可以完美运行。但在 Android 11 中，下载新的ave.apk 后，我收到一个错误，有两个弹出窗口。下面有一个进度说：

**Unknown**
Staging app...
____________________________

祝酒词：

   There was a problem parsing the package.

                    OK.

然而，我可以通过 Android Studio 和adb install ave.apk 正常安装ave.apk。即使应用本身，只要我不将apk保存在应用文件夹中！

我在 Android Studio 控制台中看到此错误：

2021-04-23 11:56:15.350 3917-3971/? I/[AirCmd]_MediaControlStateMonitor: isForegroundAppSupportsMediaButton : mediaSession is empty
2021-04-23 11:56:15.350 3917-3971/? I/[AirCmd]_MediaControlStateMonitor: active Notification List is null
2021-04-23 11:56:15.350 3917-3971/? I/[AirCmd]_PenActionRule: getAction : get default action data from remote action because pen action data is null.
2021-04-23 11:56:15.350 3917-3971/? I/[AirCmd]_BleSpenButtonActionDetector: enableDoubleClickDetection: enabled=true, doubleClickWaitInterval=300
2021-04-23 11:56:15.350 3917-3971/? I/[AirCmd]_RemoteSpenMainController: onSwitch : package is com.google.android.packageinstaller   and activity is com.android.packageinstaller.InstallStaging and isBleConnected is true and hasActions is false
2021-04-23 11:56:15.350 3917-3917/? I/AC:FloatingIconController: onBleFloatingIconStateChanged isEnabled : false, delay : 250
2021-04-23 11:56:15.351 2661-28003/? W/FuseDaemon: Invalid other package file access from com.floritfoto.apps.ave(: /storage/58ED-1620/Android/data/com.floritfoto.apps.ave/ornitologia/Downloads/ave.apk: Success
2021-04-23 11:56:15.352 11973-16410/? W/InstallStaging: Error staging apk from content URI
    java.io.IOException: read failed: ENOENT (No such file or directory)
        at libcore.io.IoBridge.read(IoBridge.java:519)
        at java.io.FileInputStream.read(FileInputStream.java:320)
        at android.os.ParcelFileDescriptor$AutoCloseInputStream.read(ParcelFileDescriptor.java:1005)
        at java.io.FileInputStream.read(FileInputStream.java:289)
        at android.os.ParcelFileDescriptor$AutoCloseInputStream.read(ParcelFileDescriptor.java:996)
        at com.android.packageinstaller.InstallStaging$StagingAsyncTask.doInBackground(InstallStaging.java:184)
        at com.android.packageinstaller.InstallStaging$StagingAsyncTask.doInBackground(InstallStaging.java:167)
        at android.os.AsyncTask$3.call(AsyncTask.java:394)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:305)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
        at java.lang.Thread.run(Thread.java:923)
     Caused by: android.system.ErrnoException: read failed: ENOENT (No such file or directory)
        at libcore.io.Linux.readBytes(Native Method)
        at libcore.io.Linux.read(Linux.java:189)
        at libcore.io.ForwardingOs.read(ForwardingOs.java:176)
        at libcore.io.BlockGuardOs.read(BlockGuardOs.java:305)
        at libcore.io.ForwardingOs.read(ForwardingOs.java:176)
        at libcore.io.IoBridge.read(IoBridge.java:509)
        at java.io.FileInputStream.read(FileInputStream.java:320) 
        at android.os.ParcelFileDescriptor$AutoCloseInputStream.read(ParcelFileDescriptor.java:1005) 
        at java.io.FileInputStream.read(FileInputStream.java:289) 
        at android.os.ParcelFileDescriptor$AutoCloseInputStream.read(ParcelFileDescriptor.java:996) 
        at com.android.packageinstaller.InstallStaging$StagingAsyncTask.doInBackground(InstallStaging.java:184) 
        at com.android.packageinstaller.InstallStaging$StagingAsyncTask.doInBackground(InstallStaging.java:167) 
        at android.os.AsyncTask$3.call(AsyncTask.java:394) 
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
        at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:305) 
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167) 
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641) 
        at java.lang.Thread.run(Thread.java:923) 
2021-04-23 11:56:15.353 11973-11973/? I/Dialog: mIsSamsungBasicInteraction = false, isMetaDataInActivity = false
2021-04-23 11:56:15.354 11973-11973/? I/DecorView: [INFO] isPopOver=false, config=false
2021-04-23 11:56:15.354 11973-11973/? I/DecorView: updateCaptionType >> DecorView@2e1b4ce[], isFloating=true, isApplication=true, hasWindowDecorCaption=false, hasWindowControllerCallback=false
2021-04-23 11:56:15.354 11973-11973/? D/DecorView: setCaptionType = 0, this = DecorView@2e1b4ce[]
2021-04-23 11:56:15.357 11973-11973/? D/ScrollView: initGoToTop
2021-04-23 11:56:15.358 11973-11973/? D/ScrollView: initGoToTop

所以似乎有些文件消失了？？哪一个？显示两个弹出窗口后，我仍然可以做一个

ls /storage/58ED-1620/Android/data/com.floritfoto.apps.ave/ornitologia/Downloads/ave.apk

ave.apk 在那里。因此，缺少的不是ave.apk。不幸的是，Android 没有告诉我找不到哪个文件...

这是我从文件提供程序获得的 URI：

content://com.floritfoto.apps.ave.provider/root/storage/58ED-1620/Android/data/com.floritfoto.apps.ave/ornitologia/Downloads/ave.apk

这是我的xml路径文件的内容：

<?xml version="1.0" encoding="utf-8"?>
<paths>
    <external-path
        name="external_files"
        path="." />
    <root-path
        name="root"
        path="." />
</paths>

编辑：如果我将 apk 保存到内存或 sdcard 中的任何其他位置，我可以更新。所以这是与应用文件夹有关的东西。

Answer 1

似乎在 Android 11 中，我们无法通过 FileProvider 共享外部可移动微型 sdcard 存储中的应用程序自己的文件：提供程序路径 .xml 文件中的技巧 <root-path name="root" path="." /> 不再适用于自己的应用程序文件夹。然而，它仍然适用于可移动存储中的其他文件夹（除了 Android/data 和 Android/obb 中的文件夹）。如果您认为这是无稽之谈，那就怪 Google。

所以我胆小的解决方案是将.apk 下载到公共Download 文件夹Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)，然后从那里安装。这当然行得通。