The core module is the fundamental module that you need in order to use this library. The others are extensions to core.
The core module contains everything you need to get started with the library. It contains all
core and normal-use functionality.
dependencies {
...
implementation 'com.afollestad.material-dialogs:core:3.0.0-beta2'
} 
The input module contains extensions to the core module, such as a text input dialog.
dependencies {
...
implementation 'com.afollestad.material-dialogs:input:3.0.0-beta2'
} 
The files module contains extensions to the core module, such as a file and folder chooser.
dependencies {
...
implementation 'com.afollestad.material-dialogs:files:3.0.0-beta2'
} 
The color module contains extensions to the core module, such as a color chooser.
dependencies {
...
implementation 'com.afollestad.material-dialogs:color:3.0.0-beta2'
} 
The datetime module contains extensions to make date, time, and date-time picker dialogs.
dependencies {
...
implementation 'com.afollestad.material-dialogs:datetime:3.0.0-beta2'
} 
The bottomsheets module contains extensions to turn modal dialogs into bottom sheets, among
other functionality like showing a grid of items. Be sure to checkout the sample project for this,
too!
dependencies {
...
implementation 'com.afollestad.material-dialogs:bottomsheets:3.0.0-beta2'
} 
The lifecycle module contains extensions to make dialogs work with AndroidX lifecycles.
dependencies {
...
implementation 'com.afollestad.material-dialogs:lifecycle:3.0.0-beta2'
}