Android chatbot using: Dialogflow (Api.ai) for machine learning & NLP, AWS DynamoDB NoSQL Database, DynamoDB Object Mapper, AWS Cognito Identity. Android Architecture Components: Room Persistence Library, ViewModel, Live Data. MVVM Architecture Pattern

License: MIT License

Java 100.00%

android android-architecture android-architecture-component android-app android-architecture-lifecycle api-ai dialogflow aws aws-dynamodb aws-mobile

android-aws-architecture-components-dialogflow-chatbot's Introduction

android-aws-architecture-components-dialogflow-chatbot

Android chatbot using:

Dialogflow (Api.ai) for machine learning & NLP
AWS DynamoDB NoSQL database for storage with DynamoDB Object Mapper (lets us map client-side classes to DynamoDB tables, perform CRUD operations, and execute queries)
AWS Cognito Identity to create unique identities for users and authenticate them for secure access to DynamoDB
Android Architecture Components:
- Room Persistence Library (provides an abstraction layer over SQLite) (compile-time verification of raw SQL queries, supports observable queries which return LiveData objects)
- ViewModel (exposes the required data and interested parties can listen to it) (ViewModels do not contain code related to the UI. This helps in the decoupling of our app components) (also allows data to survive configuration changes such as screen rotations. )
- LiveData (an observable data holder class) (it's lifecycle-aware, ensuring LiveData only updates app component observers that are in an active lifecycle state.)

Fiona AI Chat

Keep yourself entertained! Talk about anything with Fiona, as she grows smarter with every interaction.

Screenshots

Contributing

Code & Issues

If you wish to contribute to the app please fork the project and submit a pull request. If possible make the PR on the develop branch.

You can trace the status of known issues on Github Issues,

Licensing

Fiona AI Chat is licensed under the MIT License.

android-aws-architecture-components-dialogflow-chatbot's People

Contributors

Stargazers

Watchers

Forkers

ks228 universaladministrator mystique9 morristech therajanmaurya mouh19 ansuman-cp

android-aws-architecture-components-dialogflow-chatbot's Issues

Implement Architecture Components (LiveData and ViewModel with Room)

Write to AWS DynamoDB once by tracking conversation in Shared Preferences

Write to AWS DynamoDB once by tracking conversation in Shared Preferences.

(conversation remains stored in shared prefs after user exists app. Once the user starts app for the second time, push conversation (conversation from prev user session) to dynamoDB and reset DbPrefs).

Also have shared preferences for chat history. Maintain it by: Before delete of dbPrefs, copy to chatHistoryPrefs.

pseudocode:

// shared prefs for DB and for chat history

// shared prefs for db:
// user, has conersation, exits app (convo saved to shared prefs).
// starts app again-> get the last conversation
// from sharedPrefs and push to the db.
// reset shared prefs file

// shared prefs for chat history:
// maintain persistence until user clears conversation
// maintain by: Before delete db shared prefs, copy to chat history prefs


// open db shared prefs. see if data exists. if exists push it back to db,
// and clear shared prefs on success

On keyboard up recyclerview does not scroll to bottom

Determine if it's the user's first time opening the app, and welcome them accordingly

Use SharedPreferences:
Read sharedPrefs Boolean var,
if it exists it's the user's first time using the app, so greet them appropriately,
else welcome the user back appropriately

Pushing back more than 10 messages if sendMessageButton is never pressed

Since we selectWelcomeChatMessage() on start of activity (based on if it's their first time or if they are returning),

if sendMessageButton is never pressed the check for at least 10 Chat messages won't occur, allowing ChatMessages to accumulate if the user quits and reenters the app multiple times without pressing sendMessageButton.

Instead, check size of allLocalNotInRemoteChatPosts while observing listNotInRemoteChatPostsViewModel so you don't push back a list of more than 10 ChatMessages

Java VM Android class loading error log4j-core

After updating Gradle to 3.0.1

Error:Execution failed for task ':app:javaPreCompileDebug'. > Annotation processors must be 
explicitly declared now.  The following dependencies on the compile classpath are found to 
contain annotation processor.  Please add them to the annotationProcessor configuration.
- log4j-core-2.2.jar (org.apache.logging.log4j:log4j-core:2.2)   Alternatively, set 
android.defaultConfig.javaCompileOptions.annotationProcessorOptions.includeCompileClasspath
= true to continue with previous behavior.  Note that this option is deprecated and will be
removed in the future.   See https://developer.android.com/r/tools/annotation-processor-error-
message.html for more details.

adding log4j-core-2.2.jar (org.apache.logging.log4j:log4j-core:2.2 as dependency or setting
android.defaultConfig.javaCompileOptions.annotationProcessorOptions.includeCompileClasspath = true

gives another error:

Rejecting re-init on previously-failed class 
java.lang.Class<org.apache.logging.log4j.core.lookup.JmxRuntimeInputArgumentsLookup>:
java.lang.NoClassDefFoundError:

veeshostak / android-aws-architecture-components-dialogflow-chatbot Goto Github PK