Integrating Forgot Password feature within Login Screen in SUSI Android App

For a user’s point of view the interface and the flow of the app is of great importance, the UI of the app should be simple and sufficient so that it does not confuse the user and provides all the necessary information to the user with the first look. In all the  apps it is the user interface that engages the user and makes the user want to use the app. So, in SUSI Android app UI flow was improved by removing the Forgot Password activity altogether.

What SUSI.AI android app previously had ?

Previously the SUSI.AI android app used to have three different screens for the user’s account related support :

  1. Login Screen
  2. Forgot Password Screen
  3. SignUp Screen    

The login screen had a Forgot Password? Option that takes the user to a new screen where the details entered in the login activity had to be entered again and only then can the user request a new password.

What are the drawbacks of this ?

Separately, providing a new activity for the specific purpose of resetting the password does not contribute towards an efficient use of UI items of the screen. A scenario where this will be annoying to the user is for eg :  when a user tries to login to the app and is unable to do so because of the incorrect credentials, user simply clicks on the Forgot Password option and on opening the Forgot Password activity to the user’s surprise all the fields entered in the login screen are to be entered again and this is really fuzzy and sometimes frustrating to the user.

A simple solution implemented for this purpose was to automatically reflect the credentials entered by the user in the login screen on the forgot password screen so  that user did not had to enter all the details again.

What better could be done and the solution?

The simplest UI for the purpose of resetting a password is to just click the Forgot Password? and user receives an email to reset the password.

Using this approach several changes were made to the app’s code.

The first change to be made was to implement the ForgotPasswordPresenter.kt functions in the LoginPresenter.kt and similarly implement the IForgotPasswordView.kt functions in the LoginActivity.kt.

The two major functions in the  IForgotPasswordPresenter.kt were :

fun requestPassword(email: String, url: String, isPersonalServerChecked: Boolean)

fun cancelSignup()

Along with these functions in the LoginPresenter.kt the view functions to reflect the view actions of the ForgotPasswordActivity.kt had to be implemented in the LoginActivity.kt file, so the functions added to the ILoginView.kt file were :

fun showForgotPasswordProgress(boolean: Boolean)

fun resetPasswordSuccess()

fun resetPasswordFailure(title: String?, message: String?, button: String?, color: Int)

Now, the two functions above which were earlier present in the ForgotPasswordPresenter.kt file were implemented in the LoginPresenter.kt file and along with the requestPassword() method the listener IForgotPasswordModel.OnFinishListener had to be implemented in the Login Presenter too. So, on implementing this listener we implement a method :

override fun onForgotPasswordModelSuccess(response: Response<ForgotPasswordResponse>) {
  loginView?.showForgotPasswordProgress(false)
  if (response.isSuccessful && response.body() != null) {
      loginView?.resetPasswordSuccess()
  } else if (response.code() == 422) {
      loginView?.resetPasswordFailure(utilModel.getString(R.string.email_invalid_title), utilModel.getString(R.string.email_invalid), utilModel.getString(R.string.retry), Color.RED)
  } else {
      loginView?.resetPasswordFailure(“${response.code()} “ + utilModel.getString(R.string.error), response.message(), utilModel.getString(R.string.ok), Color.BLUE)
  }

}

Now after implementing these methods in Presenter file we have to implement the methods. The function resetPasswordSuccess() works as :

override fun resetPasswordSuccess() {
  startActivity(Intent(this@LoginActivity, ForgotPass::class.java))
}

On successful request for the password from the server the above method in the activity is called and so it takes us to the new activity. The new activity  only contains a simple screen with a default message :

The above screen is the final output once we click on Forgot Password? on the login screen.

References :

Trying to Build Android MVP App in Kotlin – Eminarti Sianturi https://android.jlelse.eu/trying-to-build-android-mvp-app-in-kotlin-afdff9da2f28

Build a Responsive UI with constraint layout

https://developer.android.com/training/constraint-layout/

 

How the presenter and view interact in the MVP pattern

https://softwareengineering.stackexchange.com/questions/284356/how-can-the-presenter-or-view-interact-with-the-model-in-the-mvp-pattern

 

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Implementing Card View in PSLab app

Card View was announced by Google in I/O ‘14 conference. Although it started a bit slow, but now we can see most of the apps like Snapchat, Google, Facebook, etc. using this widget. So, this blog is solely contributed on how to implement Card View in your own app by taking example of PSLab application.

What is Card View ?

CardView is a view container or ViewGroup that inherits its nature from FrameLayout which further inherits from ViewGroup itself. The only thing that separates a CardView from any other ViewGroups is its nature to behave like a card, more specifically the shadow and rounded corners. The basic customization that a CardView provides includes CornerRadius, Elevation, MaxElevation, ContentPadding, CompatPadding, PreventCornerOverlap, and a dedicated CardBackgroundColor or say Card Background which is the most necessary feature for a card to look cool.

Step by Step description how CardView was implemented in PSLab

  • First step is to add dependencies in your project as widgets like Card View, Recyclerview, etc. are not included in a common repository of widgets provided by Google.

App level dependency :

compile 'com.android.support:cardview-v7:26.0.0'
compile 'com.android.support:recyclerview-v7:+'

If you are using Android Studio 3.0+ than add the following dependency instead of above :

implementation 'com.android.support:cardview-v7:26.0.0'
implementation 'com.android.support:recyclerview-v7:27.1.1'
  •  Now we can use Card View widget in our app. So, first make add card view in layout section like this :
<android.support.v7.widget.CardView
    	android:id="@+id/card_view"
    	android:layout_width="match_parent"
    	android:layout_height="@dimen/total_height_card"
    	android:layout_gravity="center"
    	android:layout_margin="@dimen/card_margin"
    	card_view:cardCornerRadius="@dimen/card_radius">
 </android.support.v7.widget.CardView>

These are the basic attributes that are used while declaring a card view. Other possible attributes can be :

  1. Elevation – Used to elevate card to give a depth effect
  2. MaxElevation – Used to give constraint to the depth effect
  3. ContentPadding – Used to provide padding between content and the card
  4. PreventCornerOverlap – To prevent different corners to overlap as shown in figure 1.

Figure 1. Image showing corner overlapping in CardView

  • Now to set the objects inside the Card View, mostly RelativeLayout is preferred as it gives the freedom to place objects in reference of others whereas LinearLayout provides freedom to place them in only one direction. Other layouts such as FrameLayout, Tables, etc. can be used as per the need of the app.
  • Now we will create a layout that will hold all the cards using RecyclerView.
<android.support.v7.widget.RecyclerView
        android:id="@+id/recycler_view"
        android:scrollbars="vertical"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>
  • Now after setting the layouts, it’s time to make adapter which inflates the information in the cards which is then represented using RecyclerView.
public class ApplicationAdapter extends RecyclerView.Adapter<ApplicationAdapter.Holder> {

	private List<ApplicationItem> applicationList;
	private final OnItemClickListener listener;
	/**
 	* View holder for application list item
 	*/
	public class Holder extends RecyclerView.ViewHolder {

    	TextView header, description;
    	ImageView applicationIcon; //Background Image

    	public Holder(View itemView) {
        super(itemView);
        this.header = itemView.findViewById(R.id.heading_card);
        this.description = itemView.findViewById(R.id.description_card);
        this.applicationIcon = itemView.findViewById(R.id.application_icon);
    	}

    	public void setup(final ApplicationItem applicationItem, final OnItemClickListener listener) {
      header.setText(applicationItem.getApplicationName());
      description.setText(applicationItem.getApplicationDescription());
      applicationIcon.setImageResource(applicationItem.getApplicationIcon());
         }
	}

	public ApplicationAdapter(Context mContext, List<ApplicationItem> applicationList, OnItemClickListener listener) {
    	this.mContext = mContext;
    	this.applicationList = applicationList;
    	this.listener = listener;
	}

     @Override
	public Holder onCreateViewHolder(ViewGroup parent, int viewType) {
    	View itemView = LayoutInflater.from(parent.getContext())
            	.inflate(R.layout.application_list_item, parent, false);
    	return new Holder(itemView);
	}

Following is the detailed explanation of each and every method :

  1. Holder(View ) – As name suggests, it holds all the items that are included in a single card together
  2. setup() – This method can contain any number of parameters as per requirement. It basically sets the data in the views in the card
  3. ApplicationAdapter() – Constructor
  4. onCreateViewHolder() – It inflates the layout containing CardView as soon as the data gets ready to be fed in it
  • Now as adapter is ready, we can declare RecyclerView in Java code to implement CardView. The main reason to use RecyclerView is that it provides the feature of scrollability so that a number of cards can be adjusted on the screen. ScrollView can also be used but it slows down the app as it tries to load all the card at once rather than loading cards as per use like RecyclerView.
RecyclerView listView = view.findViewById(R.id.applications_recycler_view);
    	RecyclerView.LayoutManager mLayoutManager = new GridLayoutManager(context, rows);
    	listView.setLayoutManager(mLayoutManager);
    	listView.setItemAnimator(new DefaultItemAnimator());
    	listView.setAdapter(applicationAdapter);

Here, we have used GridLayoutManager to use grids along with RecyclerView. It is optional and can be used as per requirement. Also, before setting adapter, fill the adapter with relevant data or else no card will be seen in actual app.

  • Now the app is ready to be built and tested on mobile device. This is how it looks in the PSLab application after implementing the above guide :

Figure 2. Screenshot of CardView implemented in PSLab app

So, in this way great user experience can be given by using this very basic widget. But great attention should be given while designing the objects inside the card as the selection and position of the objects is what makes the card look good. Objects used in making cards for PSLab very well suited the app and so are designed like that. Practice should be done by taking reference of some very good apps like Snapchat, Google, etc. and from Material Designs provided by Google before implementing them in actual project.

Resources

  1. https://www.androidhive.info/2016/05/android-working-with-card-view-and-recycler-view/ – This article gives a better practice by implementing a real world example
  2. https://developer.android.com/reference/android/support/v7/widget/CardView – Official documentation by Google on CardView
  3. https://developer.android.com/guide/topics/ui/layout/recyclerview – Official documentation by Google on RecyclerView

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Displaying essential features when the Phimpme Application starts

In this blog, I will explain how I implemented showcase View to display all the essential features of the Phimpme Android application when the application starts first. In this, the users will know which activity is used for what purpose.  

Importing material design Showcase View

I used material design showcase in Phimpme  Android application to take the benefit of the latest Android design and to add more text on the screen which is easily visible by the users. We need to add the following to our gradle.

compile 'com.github.deano2390:MaterialShowcaseView:1.1.0'

There is a very good repository in Github for material design Showcase view which we have used here.

Implementing Material design showcaseView on the desired activity

In Phimpme Android application we have three main activity on the home screen. Namely:

  • Camera
  • Gallery
  • Accounts Activity

Camera Activity and Gallery Activity is used to take pictures and select the picture respectively. Accounts Activity contains more than 10 accounts of various social media platforms and storage platform. When the application starts my aim is to display the function of all three activities in a showcase View. it is implemented in the following Steps:

Step 1

Import all the module from the Material showcase view we have used in the gradle.

import uk.co.deanwild.materialshowcaseview.MaterialShowcaseSequence;
import uk.co.deanwild.materialshowcaseview.MaterialShowcaseView;
import uk.co.deanwild.materialshowcaseview.ShowcaseConfig;

Step 2

Get the reference all the buttons you want to show the features. These buttons will be highlighted when the showcase View is displayed.

nav_home = (BottomNavigationItemView) findViewById(R.id.navigation_home);
nav_cam = (BottomNavigationItemView) findViewById(R.id.navigation_camera);
nav_acc = (BottomNavigationItemView) findViewById(R.id.navigation_accounts);

Step 3

In Phimpme Android application I have used to display the features of three navigation buttons. So, to display the features of more than one button or View we have to use MaterialShowcaseSequence class to display the features of the buttons in a sequence, that is one after the other.

In the onCreate activity, I am calling presentShowcaseSequence function. This function has a delay time. This delay time is required to wait for four seconds until the splash screen activity is over and the activity is started.

private void presentShowcaseSequence() {
   ShowcaseConfig config = new ShowcaseConfig();
   config.setDelay(4000); // half second between each showcase view
   MaterialShowcaseSequence sequence = new MaterialShowcaseSequence(this, SHOWCASE_ID);
   sequence.setOnItemShownListener(new MaterialShowcaseSequence.OnSequenceItemShownListener() {
       @Override
       public void onShow(MaterialShowcaseView itemView, int position) {
       }
   });
   sequence.setConfig(config);

Step 4

Set the initial target Button. This target button will be pointed first when the app is launched for the first time.

sequence.addSequenceItem(nav_home, getResources().getString(R.string.home_button), getResources().getString(R.string.ok_button));

 

Step 5

Add subsequent target buttons to display the features of that buttons. To add more subsequent target buttons we will use function addSequenceitem. To set the target we have specify the button which we want to focus in setTarget(Button). We need to display the text which will show the important features in regarding that activity in setContentText(text to be displayed). For a dismiss button we need to specify the a string in setDismissText(Dismiss button string)

sequence.addSequenceItem(
       new MaterialShowcaseView.Builder(this)
               .setTarget(nav_cam)
               .setDismissText(getResources().getString(R.string.ok_button))
               .setContentText(getResources().getString(R.string.camera_button))
               .build()
);
sequence.addSequenceItem(
       new MaterialShowcaseView.Builder(this)
               .setTarget(nav_acc)
               .setDismissText(getResources().getString(R.string.ok_button))
               .setContentText(getResources().getString(R.string.accounts_button))
               .build()
);
sequence.start();

Sequence.start is used to display the showcase.

Conclusion

Using this method users can easily have the knowledge of the functionality of the application and can navigate through the activities without wasting a lot of time in figuring out the functionality of the application.

Github

Resources

 

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Skill Editor in SUSI Skill CMS

SUSI Skill CMS is a web application built on ReactJS framework for creating and editing SUSI skills easily. It follows an API centric approach where the SUSI Server acts as an API server. In this blogpost we will see how to add a component which can be used to create a new skill SUSI Skill CMS.

For creating any skill in SUSI we need four parameters i.e model, group, language, skill name. So we need to ask these 4 parameters from the user. For input purposes we have a common card component which has dropdowns for selecting models, groups and languages, and a text field for skill name input.

<SelectField
    floatingLabelText="Model"
    value={this.state.modelValue}
    onChange={this.handleModelChange}
>
    {models}
</SelectField>
<SelectField
    floatingLabelText="Group"
    value={this.state.groupValue}
    onChange={this.handleGroupChange}
>
    {groups}
</SelectField>
<SelectField
    floatingLabelText="Language"
    value={this.state.languageValue}
    onChange={this.handleLanguageChange}
>
    {languages}
</SelectField>
<TextField
    floatingLabelText="Enter Skill name"
    floatingLabelFixed={true}
    hintText="My SUSI Skill"
    onChange={this.handleExpertChange}
/>
<RaisedButton label="Save" backgroundColor="#4285f4" labelColor="#fff" style={{marginLeft:10}} onTouchTap={this.saveClick} />

This is the card component where we get the user input. We have API endpoints on SUSI Server for getting the list of models, groups and languages. Using those APIs we inflate the dropdowns.
Then the user needs to edit the skill. For editing of skills we have used Ace Editor. Ace is an code
editor written in pure javascript. It matches the features native editors like Sublime and TextMate.

To use Ace we need to install the component.

npm install react-ace --save                        

This command will install the dependency and update the package.json file in our project with this dependency.

To use this editor we need to import AceEditor and place it in the render function of our react class.

<AceEditor
    mode=" markup"
    theme={this.state.editorTheme}
    width="100%"
    fontSize={this.state.fontSizeCode}
    height= "400px"
    value={this.state.code}
    name="skill_code_editor"
    onChange={this.onChange}
    editorProps={{$blockScrolling: true}}
/>

Now we have a page that looks something like this

Now we need to handle the click event when a user clicks on the save button.

First we check if the user is logged in or not. For this we check if we have the required cookies and the access token of the user.

 if(!cookies.get('loggedIn')) {
            notification.open({
                message: 'Not logged In',
                description: 'Please login and then try to create/edit a skill',
                icon: <Icon type="close-circle" style={{ color: '#f44336' }} />,
            });
            return 0;
        }

If the user is not logged in then we show him a error notification and asks him to login.

Then we check if he has filled all the required fields like name of the skill etc. and after that we call an API Endpoint on SUSI Server that will finally store the skill in the skill_data_repo.

let url= “http://api.susi.ai/cms/modifySkill.json”
$.ajax({
    url:url,
    dataType: 'jsonp',
    jsonp: 'callback',
    crossDomain: true,
    success: function (data) {
        console.log(data);
        if(data.accepted===true){
            notification.open({
                message: 'Accepted',
                description: 'Your Skill has been uploaded to the server',
                icon: <Icon type="check-circle" style={{ color: '#00C853' }} />,
            });
           }
    }
});

In the success function of ajax call we check if accepted parameter is true from the server or not. If accepted is true then we show user a notification with a message that “Your Skill has been uploaded to the server”.

To see this component running please visit http://skills.susi.ai/skillEditor.

Resources

Material-UI: http://www.material-ui.com/

Ace Editor: https://github.com/securingsincity/react-ace

Ajax: http://api.jquery.com/jquery.ajax/

Universal Cookies: https://www.npmjs.com/package/universal-cookie

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Upgrading the Style and Aesthetic of an Android App using Material Design

I often encounter apps as I add Open Event format support that don’t follow current design guidelines. Earlier styling an app was a tough task as the color and behaviour of the views needed to be defined separately. But now as we move forward to advanced styling methods we can easily style our app.

I recently worked on upgrading the user interface of Giraffe app after adding our Open Event support. See the repository to view the code for more reference. Here I follow the same procedure to upgrade the user interface.

First we add essential libraries to move with our material aesthetic. The Appcompat library provides backward compatibility.

//Essential Google libraries
compile 'com.android.support:appcompat-v7:25.3.1'
compile 'com.android.support:design:25.3.1

Then we define an XML file in the values folder for the style of the app which we get through Appcompat library. We could inherit same style in the entire app or separate style for the particular activity.

<resources>

   <!-- Base application theme. -->
   <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
       <!-- Customize your theme here. -->
       <item name="colorPrimary">@color/colorPrimary</item>
       <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
       <item name="colorAccent">@color/colorAccent</item>
   </style>


   <style name="AlertDialogCustom" parent="Theme.AppCompat.Light.Dialog.Alert">
       <item name="colorPrimary">@color/colorPrimary</item>
       <item name="colorAccent">@color/colorAccent</item>
   </style>

</resources>

So now we can see the views made following the same color scheme and behaviour throughout the app following current design guidelines without any particular manipulation to each of them.

Tip: Don’t define values of colors separately for different views. Define them in colors.xml to use them everywhere. It becomes easier then to change in future if needed.

The app now uses Action Bar for the frequently used operations unlike the custom layout that was made earlier.

This is how Action Bar is implemented,

First declare the action bar in XML layout,

Tip: Define color of the bar two shades lighter than the status bar.

 <android.support.design.widget.AppBarLayout
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:background="@android:color/transparent"
             android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
             <android.support.v7.widget.Toolbar

                 xmlns:app="http://schemas.android.com/apk/res-auto"         
                 android:id="@+id/toolbar_options"
                 android:layout_width="match_parent"
                 android:layout_height="?attr/actionBarSize"
                 android:background="@color/colorPrimary"
                 app:popupTheme="@style/ThemeOverlay.AppCompat.Dark">
                 
                 <TextView
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     android:text="@string/options"
                     android:textColor="@color/colorAccent"
                     android:textSize="20sp" />
              </android.support.v7.widget.Toolbar>

</android.support.design.widget.AppBarLayout>

Then you can use the action bar in the activity, use onCreateOptionsMenu() method to inflate options in the toolbar.

@Override
    public void onCreate(Bundle savedInstanceState) {
        ...

        setTitle("");
        title = (TextView) findViewById(R.id.titlebar);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar_main);
        setSupportActionBar(toolbar);

        ...
    }

The menu that needs to be inflated will be like this for two button at the right end of the action bar for bookmarks and filter respectively,

<menu xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:app="http://schemas.android.com/apk/res-auto">
     <item
        android:id = "@+id/action_bookmark"
        android:icon = "@drawable/ic_bookmark"
        android:menuCategory = "secondary"
        android:title = "Bookmark"
        app:showAsAction = "ifRoom" />
 
     <item
         android:id = "@+id/action_filter"
         android:icon = "@drawable/ic_filter"
         android:menuCategory = "secondary"
         android:title = "Filter"
         app:showAsAction = "ifRoom" />
</menu>

To adapt the declared style further, Alert Dialogs are also modified to match the app’s theme, it’s style is defined along with the app’s style. See below

AlertDialog.Builder noFeedBuilder = new AlertDialog.Builder(context,R.style.AlertDialogCustom);
            noFeedBuilder.setMessage(R.string.main_no_feed_text)
                    .setTitle(R.string.main_no_feed_title)
                    .setPositiveButton(R.string.common_yes, new DialogInterface.OnClickListener() {
                  ...
            noFeedBuilder.show();

Here is an example of improvement, before and after we update the user interface and aesthetic of app in easy steps defined,

   

See this for all the changes made to step up the user interface of the app.

References:

 

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Skill History Component in Susi Skill CMS

SUSI Skill CMS is an editor to write and edit skill easily. It is built on ReactJS framework and follows an API centric approach where the Susi server acts as API server. Using Skill CMS we can browse history of a skill, where we get commit ID, commit message and name the author who made the changes to that skills. In this blog post, we will see how to add skill revision history component in Susi Skill CMS.

One text file represents one skill, it may contain several intents which all belong together. Susi skills are stored in susi_skill_data repository. We can access any skill based on four tuples parameters model, group, language, skill.

<Menu.Item key="BrowseRevision">
 <Icon type="fork" />
   Browse Skills Revision
 <Link to="/browseHistory"></Link>
</Menu.Item>

First let’s create a option in sidebar menu, and link it “/browseHistory” route created at index.js 

 <Route path="/browseHistory" component={BrowseHistory} />

Next we will be adding skill versioning using endpoints provided by Susi Server, to select a skill we will create a drop down list, for this we will be using Select Field a component of  Material UI.

request('http://cors-anywhere.herokuapp.com/api.susi.ai/cms/getModel.json').then((data) => {
    console.log(data.data);
    data = data.data;
    for (let i = 0; i < data.length; i++) {
        models.push(<MenuItem value={i} key={data[i]} primaryText={`${data[i]}`}/>);
    }

    console.log(models);
});
 <SelectField
   floatingLabelText="Expert"
   style={{width: '50px'}}
   value={this.state.value}
   onChange={this.handleChange}>
      {experts}
  </SelectField>

We store the models, groups and languages in array using the endpoints api.susi.ai/cms/getModel.json, api.susi.ai/cms/getGroups.json, api.susi.ai/cms/getAllLanguages.json set the values in respective select fields. The request functions takes the url as string and the parses the json and fetches the object containing data or error depending on the response from the server. Once run your project using

npm start

And you would be able to see the drop down list working

Next, we will use Material UI tables for displaying the organized data. For using  table component we need to import table, it’s body, header and row column from Material ui class. 

import {Table, TableBody, TableHeader, TableHeaderColumn, TableRow, TableRowColumn} from "material-ui/Table";

We then make our header Columns, in our case it’s three, namely Commit ID, Commit Message, Author name.

 <TableRow>
  <TableHeaderColumn tooltip="Commit ID">Commit ID</TableHeaderColumn>
  <TableHeaderColumn tooltip="Commit Message">Commit Message</TableHeaderColumn>
  <TableHeaderColumn tooltip="Author Name">Author Name</TableHeaderColumn>
 </TableRow>

To get the history of modification of a skill, we will use endpoint “http://api.susi.ai/cms/getSkillHistory.json”. It uses JGit for managing version control in skill data repository. JGit is a library which implements the Git functionality in Java. An endpoint is accessed based on userRoles, which can be Admin, Privilege, User, Anonymous. In our case it is Anonymous. Thus a User need not to log in to access this endpoint.

 url = "http://api.susi.ai/cms/getSkillHistory.json?model="+models[this.state.modelValue].key+"&group="+groups[this.state.groupValue].key+"&language="+languages[this.state.languageValue].key+"&skill="+this.state.expertValue;

After getting the url, we will next make a ajax network call to get the modification history of skill., if the method returns success, we get the desired data in table array and display it in rows through its render() method, which checks if the data is set in state -if so, it renders the contents otherwise we display the error occurred while processing the request.

 $.ajax({
            url: url,
            jsonpCallback: 'pccd',
            dataType: 'jsonp',
            jsonp: 'callback',
            crossDomain: true,
            success: function(data) {
                data = data.commits;
                let array = [];
                for(let i=0;i<data.length;i++){
                    array.push(data[i]);
                }
{tableData.map((row, index) => (
  <TableRow key={index}>
    <TableRowColumn>{row.commitID}</TableRowColumn>
    <TableRowColumn>{row.commit_message}</TableRowColumn>
    <TableRowColumn>{row.author}</TableRowColumn>
   </TableRow>
))}

Test the final output  on http://skills.susi.ai/browseHistory or http://localhost:3000/browseHistory , select the model, group , language and skill and get the history of that skill.


Next time when you need drop down list or tables to organize your data, do check out https://github.com/callemall/material-ui for examples, which can help in providing good outlines to you apps. For contributions to susi_skill_cms, join our chat channel  on gitter: https://gitter.im/fossasia/susi_server and browse https://github.com/fossasia/susi_skill_cms for complete code.

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Better Bookmark Display Viewholder in Home Screen of the Open Event Android App

Earlier in the Open Event Android app we had built the homescreen with the bookmarks showing up at the top as a horizontal list of cards but it wasn’t very user-friendly in terms of UI. Imagine that a user bookmarks over 20-30 sessions, in order to access them he/she might have to scroll horizontally a lot in order to access his/her bookmarked session. So this kind of UI was deemed counter-intuitive. A new UI was proposed involving the viewholder used in the schedule page i.e DayScheduleViewHolder, where the list would be vertical instead of horizontal. An added bonus was that this viewholder conveyed the same amount of information on lesser white space than the earlier viewholder i.e SessionViewHolder.

Old Design
New Design

 

 

 

 

 

 

 

 

 

Above are two images, one in the initial design, the second in the new design. In the earlier design the number of bookmarks visible to the user at a time was at most 1 or 2 but now with the UI upgrade a user can easily see up-to 5-6 bookmarks at a time. Additionally there is more relevant content visible to the user at the same time.

Additionally this form of design also adheres to Google’s Material Design guidelines.

Code Comparison of the two Iterations

Initial Design
sessionsListAdapter = new SessionsListAdapter(getContext(), mSessions, bookmarkedSessionList);
 sessionsListAdapter.setBookmarkView(true);
 bookmarksRecyclerView.setAdapter(sessionsListAdapter);
 bookmarksRecyclerView.setLayoutManager(new LinearLayoutManager(getContext(),LinearLayoutManager.HORIZONTAL,false));

Here we are using the SessionListAdapter for the bookmarks. This was previously being used to display the list of sessions inside the track and location pages. It is again being used here to display the horizontal list of bookmarks.To do this we are using the function setBookmarkView(). Here mSessions consists the list of bookmarks that would appear in the homescreen.

Current Design
bookmarksRecyclerView.setVisibility(View.VISIBLE);
 bookMarksListAdapter = new DayScheduleAdapter(mSessions,getContext());
 bookmarksRecyclerView.setAdapter(bookMarksListAdapter);
 bookmarksRecyclerView.setLayoutManager(new LinearLayoutManager(getContext()));

Now we are using the DayScheduleAdapter which is the same adapter used in the schedule page of the app. Now we use a vertical layout instead of a horizontal layout  but with a new viewholder design. I will be talking about the last line in the code snippet shortly.

ViewHolder Design (Current Design)

<RelativeLayout android:id="@+id/content_frame">
    <LinearLayout android:id="@+id/ll_sessionDetails">
        <TextView android:id="@+id/slot_title"/>
        <RelativeLayout>
            <TextView android:id="@+id/slot_start_time”/>
            <TextView android:id="@+id/slot_underscore"/>
            <TextView android:id="@+id/slot_end_time"/>

           <TextView android:id="@+id/slot_comma"/>
            <TextView android:id="@+id/slot_location”/>
            <Button android:id="@+id/slot_track"/>
            <ImageButton android:id="@+id/slot_bookmark"/>
        </RelativeLayout>

    </LinearLayout>
    <View android:id=”@+id/divider”/>
 </RelativeLayout>

This layout file is descriptive enough to highlight each element’s location.

In this viewholder we can also access to the track page from the track tag and can also remove bookmarks instantly.

The official widget to make a scroll layout in android is ScrollView. Basically, adding a RecyclerView inside ScrollView can be difficult . The problem was that the scrolling became laggy and weird.  Fortunately, with the appearance of Material Design , NestedScrollView was released and this becomes much easier.

bookmarksRecyclerView.setNestedScrollingEnabled(false);

With this small snippet of code we are able to insert a RecyclerView inside the NestedScrollView without any scroll lag.
So now we have successfully updated the UI/UX for the homescreen  to meet the requirements as given by the Material Design guidelines.

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