Update app using Intent FileUriExposedException失败[duplicate]

Question

File outputFile = ...;

Intent promptInstall = new Intent(Intent.ACTION_VIEW).setDataAndType(Uri.fromFile(outputFile), "application/vnd.android.package-archive");
promptInstall.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
promptInstall.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
this.context.startActivity(promptInstall);

<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/provider_paths" />
</provider>

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

android.os.FileUriExposedException: file:///storage/emulated/0/Download/app-release.apk exposed beyond app through Intent.getData()

我环顾了Stackoverflow和google，但没有一个解决方案奏效。我在provider_paths.xml中做错了什么吗？

Answer 1

flag_grant_write_uri_permission，它将授予最终处理请求及其意图的组件权限。

Intent promptInstall = new Intent(Intent.ACTION_VIEW).setDataAndType(Uri.fromFile(outputFile), "application/vnd.android.package-archive");
promptInstall.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
promptInstall.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
this.context.startActivity(promptInstall);

和更改

Uri uri = Uri.fromFile(outputFile);

至

Uri uri = FileProvider.getUriForFile(MainActivity.this, BuildConfig.APPLICATION_ID + ".provider",outputFile);