我已经建立了一个具有共享用户ID android.uid.system的签名应用程序(系统应用程序)。它包含一个FileProvider,我需要此文件来安装软件包。
当我尝试使用软件包安装意图安装应用程序时,发生以下错误。
2020-01-16 23:44:48.506 5305-16771/com.google.android.packageinstaller W/InstallStaging: Error staging apk from content URI
java.lang.SecurityException: Permission Denial: opening provider com.example.example.CustomFileProvider from ProcessRecord{5bd7399 5305:com.google.android.packageinstaller/u0a13} (pid=5305, uid=10013) that is not exported from UID 1000
at android.os.Parcel.readException(Parcel.java:2004)
at android.os.Parcel.readException(Parcel.java:1950)
at android.app.IActivityManager$Stub$Proxy.getContentProvider(IActivityManager.java:4758)
at android.app.ActivityThread.acquireProvider(ActivityThread.java:5836)
at android.app.ContextImpl$ApplicationContentResolver.acquireUnstableProvider(ContextImpl.java:2526)
at android.content.ContentResolver.acquireUnstableProvider(ContentResolver.java:1780)
at android.content.ContentResolver.openTypedAssetFileDescriptor(ContentResolver.java:1394)
at android.content.ContentResolver.openAssetFileDescriptor(ContentResolver.java:1247)
at android.content.ContentResolver.openInputStream(ContentResolver.java:967)
at com.android.packageinstaller.InstallStaging$StagingAsyncTask.doInBackground(InstallStaging.java:167)
at com.android.packageinstaller.InstallStaging$StagingAsyncTask.doInBackground(InstallStaging.java:161)
at android.os.AsyncTask$2.call(AsyncTask.java:333)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:245)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
at java.lang.Thread.run(Thread.java:764)
但是,如果删除共享用户标识(将其转换为用户应用程序而不是系统,则该软件包安装有效)。>
AndroidManifest:
<manifest xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" package="com.example.example" android:sharedUserId="android.uid.system"> ... <provider android:name="com.example.example.CustomFileProvider" android:authorities="${applicationId}.provider" android:exported="false" android:grantUriPermissions="true"> <meta-data android:name="android.support.FILE_PROVIDER_PATHS" android:resource="@xml/provider_paths" /> </provider>
提供者路径:
<?xml version="1.0" encoding="utf-8"?> <paths> <external-path name="external_files" path="."/> <files-path name="files" path="." /> </paths>
PackageInstall:
private static void OpenNewVersion(String location) { Intent intent = new Intent("android.intent.action.VIEW"); intent.setDataAndType(getUriFromFile(location), "application/vnd.android.package-archive"); intent.addFlags(FLAG_GRANT_READ_URI_PERMISSION); intent.setFlags(FLAG_ACTIVITY_NEW_TASK); activity.startActivity(intent); activity.finish(); } private static Uri getUriFromFile(String location) { return CustomFileProvider.getUriForFile(activity, activity.getApplicationContext().getPackageName() + ".provider", new File(location + fileName)); }
CustomFileProvider:
package com.example.example; import android.support.v4.content.FileProvider; public class CustomFileProvider extends FileProvider {}
我不明白为什么我不能将FileProvider用作系统应用程序。有没有解决的办法?
我已经建立了一个具有共享用户ID android.uid.system的签名应用程序(系统应用程序)。它包含一个FileProvider,我需要此文件来安装软件包。当我尝试安装...
转到androidmanifest.xml,并在您的内容提供者标记中启用export参数,例如export = true