I am trying to implement a file provider in Xamarin.Forms, and I am having an issue loading my file paths file. Whenever I attempt to build that app, I get the following error:
No resource found that matches the given name (at 'resource' with value '@xml/file_paths')
The file_paths.xml file is located in the resources directory under the xml folder. Any help would greatly appreciated. Here are my relevant files:
Android Manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" package="com.mycompany.myapp" android:versionName="1" android:installLocation="internalOnly">
<uses-sdk android:targetSdkVersion="26" />
<uses-permission android:name="android.permission.VIBRATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.CALL_PHONE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<application android:icon="@drawable/advanced" android:label="FD CANNECT" android:windowSoftInputMode="adjustPan" android:descendantFocusability="afterDescendants" >
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="com.myapp.fileprovider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/file_paths" />
</provider>
</application>
</manifest>
file_paths.xml
<?xml version="1.0" encoding="utf-8" ?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<external-path name="downloads" path="downloads/" />
</paths>
MainActivity.cs
using Android.Provider;
using Android.Support.V4.Content;
using CAN2LAN.Droid;
using Java.Lang;
[assembly: Xamarin.Forms.Dependency(typeof(ShareIntent))]
namespace CAN2LAN.Droid
{
using Acr.UserDialogs;
using System.Linq;
using Xamarin.Forms;
using Xamarin.Forms.Platform.Android;
global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity
{
protected override void OnCreate(Bundle bundle)
{
TabLayoutResource = Resource.Layout.Tabbar;
ToolbarResource = Resource.Layout.Toolbar;
UserDialogs.Init(this);
base.OnCreate(bundle);
global::Xamarin.Forms.Forms.Init(this, bundle);
Downloaded();
Android.Runtime.AndroidEnvironment.UnhandledExceptionRaiser += (sender, args) => {
args.Handled = false;
};
this.LoadApplication(new App());
}
public void Downloaded() {
CrossDownloadManager.Current.PathNameForDownloadedFile = new System.Func<IDownloadFile, string>(file => {
string fileName = Android.Net.Uri.Parse(file.Url).Path.Split('/').Last();
return System.IO.Path.Combine(Environment.GetExternalStoragePublicDirectory(Environment.DirectoryDownloads).AbsolutePath, fileName);
});
}
}
public class ShareIntent : IShareable {
public void OpenShareIntent(string fileName) {
OpenFile(fileName);
}
public void OpenFile(string fileName) {
string auth = "com.myapp.fileprovider";
System.Diagnostics.Debug.WriteLine("Auth is " + auth);
string mimeType = Android.Webkit.MimeTypeMap.Singleton.GetMimeTypeFromExtension(Android.Webkit.MimeTypeMap.GetFileExtensionFromUrl(fileName.ToLower()));
if (mimeType == null)
mimeType = "*/*";
Android.Net.Uri uri = null;
System.Diagnostics.Debug.WriteLine("Created authentication and mime type");
var file = new Java.IO.File(System.IO.Path.Combine(Environment.GetExternalStoragePublicDirectory(Environment.DirectoryDownloads).AbsolutePath, fileName));
System.Diagnostics.Debug.WriteLine("File size is " + file.TotalSpace);
System.Diagnostics.Debug.WriteLine("Froms context is " + Forms.Context);
try {
uri = FileProvider.GetUriForFile(Forms.Context, auth, file);
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine("Exception " + e);
}
System.Diagnostics.Debug.WriteLine("URI is " + uri);
Intent intent = new Intent(Intent.ActionView);
intent.SetDataAndType(uri, mimeType);
intent.AddFlags(ActivityFlags.GrantReadUriPermission | ActivityFlags.GrantWriteUriPermission);
intent.AddFlags(ActivityFlags.NewTask | ActivityFlags.NoHistory);
System.Diagnostics.Debug.WriteLine("Intent is created");
// Trying to allow writing to the external app ...
var resInfoList = Forms.Context.PackageManager.QueryIntentActivities(intent, PackageInfoFlags.MatchDefaultOnly);
foreach (var resolveInfo in resInfoList) {
var packageName = resolveInfo.ActivityInfo.PackageName;
Forms.Context.GrantUriPermission(packageName, uri, ActivityFlags.GrantWriteUriPermission | ActivityFlags.GrantPrefixUriPermission | ActivityFlags.GrantReadUriPermission);
}
System.Diagnostics.Debug.WriteLine("We have created res info lsit");
try
{
System.Diagnostics.Debug.WriteLine("We are about to show the intent");
Forms.Context.StartActivity(intent);
System.Diagnostics.Debug.WriteLine("We ahe shwoed the intent");
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine("We have caugth an exception " + e);
}
}
}
}
