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The named parameter 'inputDetailsFromUser' isn't defined. Try correcting the name to an existing named parameter's name

I'm making an flutter app in visual studio code and it shows these errors problems description
and this is the code for one of these problems :
code of the problem

Well, it seems that your PayoutMethod class constructor does not have property named inputDetailsFromUser. Show us the definition of the PayoutMethod class and then we will be able to help you more.

Unable to implement Knox' EnterpiseDeviceManager

I am trying to implement the EnterpriseDeviceManager class of the Knox Standard SDK using the given example in the documentation: Documentation
However i am getting the following error:Error
My app has the MDM_RESTRICTION permission and I am within a class deriving from Activity.
Is there any known issue?

Apparently it has no effect whatsoever and is just an obnoxious error.
I was able to use the class nontheless.

You're correct that this is a common error shown when attempting to use this code. If you add the following warning suppression line, then the error underline will go away:
#SuppressLint("WrongConstant")
EnterpriseDeviceManager edm = (EnterpriseDeviceManager) getSystemService(EnterpriseDeviceManager.ENTERPRISE_POLICY_SERVICE);

Class not found exception due to wrong md5

I'm building a Xamarin android app.
After xamarin update I get a build error. I can't tell if that is related at all but what worked before now throws an exception: ClassNotFoundException. The class exists and is a proper activity. There was no change in that area at all.
I've seen many SO threads in that regard but they all suggest to clean solution, delete build folder etc. And that doesn't help me unfortunately.
What I realise is that in the exception message
W/monodroid( 4201): JNIEnv.FindClass(Type) caught unexpected exception: Java.Lang.ClassNotFoundException: md56629fa8edd4a41a77563f74c5f9a5f792.MainActivity the md5 part is not the same as the folder where the MainActivity.class resides in (md56b5cfc81a7b5c4227a0c9a4dcb7dab856). When I delete that folder a new one is generated during a build. Its md5 is different again. But the exception reappears, asking for the same old md5 as before.
My questions:
1.) What can I do to make JNIEnv look for the right md5?
2.) How are those md5 generated and why
Thanks.

Xamarin generates an MD5 sum for all types that have a Android Callable Wrapper (ACW), unless you explicitly give it a name. I guess this is done to avoid collisions with other types, which could live in the same package name. These are generated at build time.
In order to set your own name on a type inheriting from Java.Lang.Object, these are types like Activity, Adapter, View and many more. You simply add a Register attribute to your class:
[Register("my.cool.package.MyTypeName")]
public class MyTypeName : SomeJavaType
{
}
For classes such as Activity you can alternatively use the Name property in the Activity attribute:
[Activity(Label = "MyActivity", Name = "my.cool.package.MyActivity")]
public class MyActivity : Activity
{
}

SelectionFragment class missing - Android based Facebook development

I've created a project where I want to have a list of friends returned. I'm following this tutorial and at section 2c I have realized that my build does not contain a SelectionFragment class. Where online could I download this class, or does anyone have the code for this class? Thank you.

maybe here SelectionFragment.java on github

My guess this class needed to be created a little bit earlier in tutorial.
Choose "Step 1b" link in right column of a page.
https://developers.facebook.com/docs/android/scrumptious/authenticate#step1b
It says like:"Create a new fragment class in your package for the authenticated UI. Name this class ''SelectionFragment'' and make its superclass Fragment."

Eclipse SDK android : The declared package does not match the expected package

I've read through similar errors however I'm confused as to how to avoid this error when working with the ADT plugin for eclipse.
I'm attempting to follow this tutorial on how to create a Grid view of images:
http://developer.android.com/guide/topics/ui/layout/gridview.html
Step five simply states open Open HelloGridView.java, however I'm not sure if I should just create a new class, or activity.
"Step five:
Create a new class called ImageAdapter that extends BaseAdapter:
I've tried both creating a new class and creating a new activity. When i created an activity I made com.example.HelloGridView the hierarchy. But I don't think this is right and I don't think these should be activities. and I receive this error:
The declared package "" does not match the expected package "com.example.hellogridview"
in the HelloGridView.java and ImageAdapter.java
What I really want to know is how should I create a new class like in step four and step 5?
(also I'm very new to android I've gone through the android training "get started" but still feel slightly clueless, Where should I go from here?)
Any help would be greatly appreciated!!

Your new class HelloGridView need to must be under your application package com.example.hellogridview.

I get this error when my code path does not match the package name.
For example, if your package name is com.whatever.myapplication, then the class should be under /yourworkspacedirectory/com/whatever/myapplication folder.