Real hacky way to let yourself use android.support.v4.content.FileProvider with exported and without grantUriPermissions.

FileProviderHack.kt

import android.content.Context
import android.content.pm.ProviderInfo
import android.support.v4.content.FileProvider

class FileProviderHack : FileProvider() {

    override fun attachInfo(context: Context, info: ProviderInfo) {
        try {
            super.attachInfo(context, info)
        } catch (ex: SecurityException) {
            // ignore
        }
        val method = FileProvider::class.java.getDeclaredMethod("getPathStrategy", Context::class.java, String::class.java)
        method.isAccessible = true
        val field = FileProvider::class.java.getDeclaredField("mStrategy")
        field.isAccessible = true
        val result = method.invoke(null, context, info.authority)
        field.set(this, result)
    }
}