与FileProvider共享文件时拒绝权限 [英] Permission Denial while sharing file with FileProvider

问题描述

我正在尝试与FileProvider共享文件.我检查了文件是否已与gmail，google drive等应用正确共享.即使引发以下异常:

I am trying to share file with FileProvider. I checked that file is shared properly with apps like gmail, google drive etc. Even though following exception is thrown:

2019-08-28 11:43:03.169 12573-12595/com.example.name E/DatabaseUtils: Writing exception to parcel
    java.lang.SecurityException: Permission Denial: reading androidx.core.content.FileProvider uri content://com.example.name.provider/external_files/Android/data/com.example.name/files/allergy_report.pdf from pid=6005, uid=1000 requires the provider be exported, or grantUriPermission()
        at android.content.ContentProvider.enforceReadPermissionInner(ContentProvider.java:729)
        at android.content.ContentProvider$Transport.enforceReadPermission(ContentProvider.java:602)
        at android.content.ContentProvider$Transport.query(ContentProvider.java:231)
        at android.content.ContentProviderNative.onTransact(ContentProviderNative.java:104)
        at android.os.Binder.execTransactInternal(Binder.java:1021)
        at android.os.Binder.execTransact(Binder.java:994)

提供者:

<provider
            android:name="androidx.core.content.FileProvider"
            android:authorities="${applicationId}.provider"
            android:exported="false"
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/file_provider_paths" />
</provider>

file_provider_paths.xml

<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
    <external-path name="external_files" path="." />
</paths>

共享意图

Intent intentShareFile = new Intent(Intent.ACTION_SEND);
        File fileWithinMyDir = new File(targetPdf);

        if(fileWithinMyDir.exists()) {
            intentShareFile.setType("application/pdf");
            Uri uri = FileProvider.getUriForFile(getActivity(), BuildConfig.APPLICATION_ID + ".provider", fileWithinMyDir);
            intentShareFile.putExtra(Intent.EXTRA_STREAM, uri);
            intentShareFile.putExtra(Intent.EXTRA_SUBJECT,
                    "Sharing File...");
            intentShareFile.putExtra(Intent.EXTRA_TEXT, "Sharing File...");
            intentShareFile.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
            startActivity(Intent.createChooser(intentShareFile, "Share File"));
        }

希望您能指出我的错误，为什么在似乎已正确授予应用程序权限并按应有的共享方式工作时抛出此异常.

Hopefully you can point out my mistake why this exceptions is thrown when it seems like apps are granted permission properly and sharing works as it should be.

我发现问题出在直线上

startActivity(Intent.createChooser(intentShareFile, "Share File"));

当我将其简单地更改为

startActivity(intentShareFile);

但是，它为拣货应用程序显示了一些不同的布局.但是我仍然无法弄清楚为什么原来的选择器不起作用.

However it displays a little bit different layout for picking application. But still I cannot figure out why original chooser is not working.

推荐答案

抱歉，回复晚了.我是这样解决的:

Sorry about the late response. I solved it like this:

Intent chooser = Intent.createChooser(intentShareFile, "Share File");

List<ResolveInfo> resInfoList = this.getPackageManager().queryIntentActivities(chooser, PackageManager.MATCH_DEFAULT_ONLY);

for (ResolveInfo resolveInfo : resInfoList) {
    String packageName = resolveInfo.activityInfo.packageName;
    this.grantUriPermission(packageName, uri, Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION);
}

startActivity(chooser);

这对我有帮助:通过意图拒绝文件提供者的权限

这篇关于与FileProvider共享文件时拒绝权限的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！