Problem - Intent to install APK file - Android Nougat

Question

I searched extensively and did not find the problem. While trying to install a file APK using a Intent in the Android Nougat, simply does not install and displays the following warning: "A problem occurred while parsing the package".

Works perfectly to open PDF files, for example, with settings to open this type of file (.PDF). But to install files .APK doesn’t work.

In the LogCat it does not present any error e with this I cannot arrive at any solution.

What could be wrong?

Follows code:

Manifest:

<provider
    android:name="android.support.v4.content.FileProvider"
    android:authorities="br.com.xxxxxxx.xxxxxxx.fileprovider"
    android:exported="false"
    android:grantUriPermissions="true">
    <meta-data
        android:name="android.support.FILE_PROVIDER_PATHS"
        android:resource="@xml/filepaths"/>
</provider>

xml/filepaths:

<files-path name="storage/emulated/0" path="."/>

Code:

if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
    try {
        Intent intent = new Intent(Intent.ACTION_INSTALL_PACKAGE);
        File file = new File(getContext().getFilesDir(), "app-debug.apk");
        Uri uri = FileProvider.getUriForFile(getContext(), BuildConfig.APPLICATION_ID + ".fileprovider", file);

        intent.setDataAndType(uri, "application/vnd.android.package-archive");
        intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
        startActivity(intent);
        finish();
    } catch (Exception e) {
        e.printStackTrace();
    }
}else{
    try {
        Intent intent = new Intent(Intent.ACTION_VIEW);
        File file = new File(Environment.getExternalStorageDirectory() + "/app-debug.apk");

        intent.setAction(android.content.Intent.ACTION_VIEW);
        intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");
        intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
        startActivity(intent);
        finish();
    } catch (Exception e) {
        e.getMessage();
    }
}

Please, what could be wrong with this code? Can anyone help me?