MAUI Android 10以编程方式安装APK

Question

我正在尝试安装我下载到Android10下载文件夹的.apk，我尝试过这个Xamarin Android 7+ install APK programmatically。

我犯了这个错误：

"/data/app/{PackName}-aV7Nkryw8OSTkpHc_8WmMg==/base.apk"，nativeLibraryDirectories=/data/app/{PackName}-aV7Nkryw8OSTkpHc_8WmMg==/lib/arm64，/data/app/{PackName}-aV7Nkryw8OSTkpHc_8WmMg==/base.apk!/lib/arm64-v8a，Java.Lang.RuntimeException：‘无法获得提供者android.support.v4.content.FileProvider: java.lang.ClassNotFoundException:没有在路径上找到"android.support.v4.content.FileProvider“类: DexPathList[zip文件android.support.v4.content.FileProvider /system/lib64 64，/

/lib64 64]’

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="{PackName}">
    <application android:allowBackup="true" android:icon="@mipmap/appicon" android:roundIcon="@mipmap/appicon_round" android:supportsRtl="true" android:label="{Label}">
        <provider android:name="android.support.v4.content.FileProvider" android:authorities="{PackName}.provider" android:exported="false" android:grantUriPermissions="true">
            <meta-data android:name="android.support.FILE_PROVIDER_PATHS" android:resource="@xml/provider_paths" />
        </provider>
    </application>
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.INSTALL_PACKAGES" />
    <uses-sdk android:minSdkVersion="24"/>
</manifest>

provider_paths.xml

<paths xmlns:android="http://schemas.android.com/apk/res/android">
        <external-path name="external_files" path="." />  
</paths>

代码：

Context context = AndroidApp.Context;
var file = new Java.IO.File(fileUri);
if (Build.VERSION.SdkInt >= BuildVersionCodes.N)
{
    var apkUri = FileProvider.GetUriForFile(context, context.ApplicationContext.PackageName + ".provider", file);
    Intent intentS = new Intent(Intent.ActionInstallPackage);
    intentS.SetData(apkUri);
    intentS.SetFlags(ActivityFlags.GrantReadUriPermission);
    context.StartActivity(intentS);
}

Answer 1

由于目标框架被设置为Android10或更高版本，而且您仍然在使用旧的包，所以可以尝试将android.support.v4.FileProvider更改为androidx.core.content.FileProvider。

您可以参考以下代码：

<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>