我正在为一个使用名为“Layar”的软件的客户编写应用程序。尝试从 Android Market 安装此软件时，我收到以下信息：“安装错误；未知原因 -17。” 我和同事一起在网上搜索了信息和解决方案，但没有发现任何用处。
正在使用的硬件我正在为几个 HTC Sapphire 32B (HTC Magic) 开发应用程序。这些手机目前运行的是定制的 Android 操作系统。操作系统 - 据我所知 - 只是由于蓝牙正常操作的修改而“定制”的。编辑：手机的操作系统是 Android 2.1。
stackoverflow 可以在哪里提供帮助这是尝试下载程序时的相关输出（经过编辑以删除不必要的行）：
D/vending ( 1849): com.android.vending.AssetDownloader.downloadAndInstall(): Initiating Download for 1 applications.
I/vending ( 1849): com.android.vending.util.DownloadManagerUtil.enqueueDownload(): Enqueue for download com.android.vending.util.DownloadManagerUtil$Request@43b942c8
I/vending ( 1849): com.android.vending.AssetDownloader.startDownload(): Download request row inserted at content://downloads/download/19
D/dalvikvm( 75): GC freed 25607 objects / 1316336 bytes in 589ms
D/vending ( 1849): com.android.vending.api.LocalAssetDatabase.notifyListener(): -1629133212261177266 / DOWNLOADING
D/dalvikvm( 2286): GC freed 4445 objects / 308864 bytes in 246ms
D/dalvikvm( 178): GC freed 7430 objects / 403216 bytes in 458ms
D/OpenSSLSessionImpl( 178): Freeing OpenSSL session
D/dalvikvm( 178): GC freed 1124 objects / 55112 bytes in 362ms
D/ddm-heap( 2329): Got feature list request
I/ActivityThread( 2329): Publishing provider com.google.android.gmail.SuggestionProvider: com.google.android.gm.SuggestionsProvider
I/ActivityThread( 2329): Publishing provider com.google.android.gm.attachmentspreviews: com.google.android.gm.AttachmentPreviewProvider
I/ActivityManager( 75): Process com.android.browser (pid 1224) has died.
D/dalvikvm( 2286): threadid=23 wakeup: interrupted
I/vending ( 1849): com.android.vending.AssetDownloader$DownloadManagerBroadcastReceiver$DownloadManagerService.startNextDownload(): Found Paused URI null
I/vending ( 1849): com.android.vending.AssetDownloader$DownloadManagerBroadcastReceiver$DownloadManagerService.startNextDownload(): No more paused downloads.
D/vending ( 1849): com.android.vending.AssetDownloader$DownloadManagerBroadcastReceiver$DownloadManagerService.handleDownloadCompletedAction(): Got a download completed intent.
D/vending ( 1849): com.android.vending.AssetDownloader$DownloadManagerBroadcastReceiver$DownloadManagerService.installFromUri(): Calling install uri=content://downloads/download/19 src=null assetId=-1629133212261177266 name=Layar last=TRUE
D/dalvikvm( 1849): GC freed 10970 objects / 628040 bytes in 400ms
D/vending ( 1849): com.android.vending.api.LocalAssetDatabase.notifyListener(): -1629133212261177266 / INSTALLING
D/PackageParser( 75): Scanning package: /data/app/vmdl48148.tmp
D/dalvikvm( 75): GC freed 14645 objects / 1016520 bytes in 296ms
I/dalvikvm-heap( 75): Grow heap (frag case) to 7.715MB for 88948-byte allocation
D/dalvikvm( 75): GC freed 402 objects / 62296 bytes in 269ms
D/dalvikvm( 75): GC freed 13251 objects / 892840 bytes in 272ms
D/dalvikvm( 2286): GC freed 6457 objects / 439400 bytes in 171ms
E/PackageManager( 75): Package com.layar requires unavailable feature android.hardware.camera; failing!
W/PackageManager( 75): Package couldn't be installed in /data/app/com.layar.apk
D/dalvikvm( 75): GC freed 22681 objects / 975952 bytes in 317ms
D/vending ( 1849): com.android.vending.api.LocalAssetDatabase.notifyListener(): -1629133212261177266 / INSTALL_FAILED
D/vending ( 1849): com.android.vending.VendingNotificationManager.showNotification(): Showing notification: [AssetID=-1629133212261177266, NotificationID=1229128979, Title=Layar, Message=Installation unsuccessful.]
I/vending ( 1849): com.android.vending.AssetDownloader$DownloadManagerBroadcastReceiver$MyPackageInstallObserver.packageInstalled(): Package install from content://downloads/download/19 failed: Unknown reason -17
我能看到的最大的事情是：
E/PackageManager( 75): Package com.layar requires unavailable feature android.hardware.camera; failing!
I/vending ( 1849): com.android.vending.AssetDownloader$DownloadManagerBroadcastReceiver$MyPackageInstallObserver.packageInstalled(): Package install from content://downloads/download/19 failed: Unknown reason -17
然而，相机是可用的并且是可用的。有谁知道这可能是什么原因造成的？错误号-17与相机问题有关吗？有没有其他人遇到过这个？无论如何，感谢您的时间，如果您能提供帮助，请提前感谢！