Android Tutorial

Software Setup and Configuration

Android Studio

File Structure

Components

Core Topics

Layout

View

Button

Intent and Intent Filters

Toast

RecyclerView

Fragments

Adapters

Other UI Component

Image Loading Libraries

Date and Time

Material Design

Bars

Working with Google Maps

Chart

Animation

Database

Advance Android

Jetpack

Architecture

App Publish

App Monetization

Custom Snackbars in Android

Snackbar is a lightweight feedback component introduced with the Material Design guidelines. It provides brief feedback messages regarding app processes at the bottom of the screen. By default, Snackbar provides simple messages with an optional action. However, you might sometimes want to customize its appearance or behavior beyond the default capabilities.

Basic Snackbar Usage

Here's a simple example of using a Snackbar:

val snackbar = Snackbar.make(view, "This is a simple snackbar!", Snackbar.LENGTH_LONG)
snackbar.setAction("OK") {
    // Handle the action
}
snackbar.show()

Customizing Snackbars

1. Customizing Text and Background Color:

snackbar.setBackgroundTint(Color.RED) // Changes the background color
snackbar.setTextColor(Color.WHITE)    // Changes the text color
snackbar.setActionTextColor(Color.YELLOW) // Changes the action text color

2. Custom Layout:

If you need more advanced customization, you can use a custom layout for your Snackbar. However, be careful with extensive customizations, as they might break the visual consistency promoted by Material Design.

val customSnackbar = Snackbar.make(view, "", Snackbar.LENGTH_LONG)
val customView = LayoutInflater.from(context).inflate(R.layout.custom_snackbar, null)

// Assuming custom_snackbar.xml has a TextView with ID "snackbar_text"
val textView = customView.findViewById<TextView>(R.id.snackbar_text)
textView.text = "This is a custom snackbar!"

val snackbarLayout = customSnackbar.view as Snackbar.SnackbarLayout
snackbarLayout.addView(customView, 0)

customSnackbar.show()

3. Change Snackbar Position:

By default, Snackbar appears at the bottom of the screen. However, with the introduction of the setAnchorView method, you can anchor the Snackbar to any view:

// To show Snackbar above a BottomNavigationView or FloatingActionButton
snackbar.setAnchorView(bottomNavigationView)

4. Handling Snackbar Callbacks:

You can get callbacks for Snackbar showing or dismissing events:

snackbar.addCallback(object : Snackbar.Callback() {
    override fun onShown(sb: Snackbar?) {
        super.onShown(sb)
        // Snackbar has been shown
    }

    override fun onDismissed(transientBottomBar: Snackbar?, event: Int) {
        super.onDismissed(transientBottomBar, event)
        // Snackbar has been dismissed
    }
})

While customizations can enhance user experience, always ensure you aren't deviating too far from established design patterns. Consistency in UI elements like Snackbar ensures users instantly recognize and understand their purpose.

Creating a custom styled Snackbar in Android Kotlin:

Description: Creating a custom styled Snackbar involves designing a layout XML file for the Snackbar's appearance and customizing its behavior. This allows you to create a Snackbar with a unique design that matches your app's style.

Code (XML):

<!-- Example of a custom styled Snackbar -->
<!-- custom_snackbar_layout.xml -->
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/custom_snackbar_background"
    android:padding="@dimen/custom_snackbar_padding"
    android:orientation="horizontal">

    <ImageView
        android:id="@+id/snackbarIcon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/ic_custom_icon"
        android:layout_marginEnd="@dimen/custom_snackbar_icon_margin" />

    <TextView
        android:id="@android:id/text1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="@color/custom_snackbar_text_color"
        android:textSize="@dimen/custom_snackbar_text_size"
        android:text="Custom Snackbar Text" />

</LinearLayout>

Customizing Snackbar appearance and behavior in Android:

Description: Customizing Snackbar appearance and behavior involves using the Snackbar class to create a Snackbar instance, setting custom attributes, and showing it. You can customize the duration, action, and more.

Code (Kotlin):

// Example of customizing Snackbar appearance and behavior
val customSnackbarView = layoutInflater.inflate(R.layout.custom_snackbar_layout, null)
val snackbar = Snackbar.make(rootLayout, "", Snackbar.LENGTH_LONG)
val snackbarLayout = snackbar.view as Snackbar.SnackbarLayout
snackbarLayout.addView(customSnackbarView, 0)
snackbar.show()

Handling actions and click events in custom Snackbars:
- Description: Handling actions and click events in custom Snackbars involves setting an OnClickListener for the desired view within the custom Snackbar layout.
- Code (Kotlin):
```
// Example of handling actions and click events in custom Snackbars
customSnackbarView.findViewById<View>(R.id.snackbarIcon).setOnClickListener {
    // Handle icon click event
}
```

Using custom views with Snackbars in Android:

Description: Using custom views with Snackbars involves inflating a custom layout and adding it to the Snackbar.SnackbarLayout. This allows you to include any custom views within the Snackbar.

Code (Kotlin):

// Example of using custom views with Snackbars
val customSnackbarView = layoutInflater.inflate(R.layout.custom_snackbar_layout, null)
val snackbar = Snackbar.make(rootLayout, "", Snackbar.LENGTH_LONG)
val snackbarLayout = snackbar.view as Snackbar.SnackbarLayout
snackbarLayout.addView(customSnackbarView, 0)
snackbar.show()

Snackbar with custom animations in Android:
- Description: Snackbar animations can be customized by using the setAnimationMode method. This allows you to define custom enter and exit animations for the Snackbar.
- Code (Kotlin):
```
// Example of Snackbar with custom animations
snackbar.setAnimationMode(Snackbar.ANIMATION_MODE_SLIDE)
```
Adding icons to custom Snackbars in Android:
- Description: Adding icons to custom Snackbars involves including an ImageView in the custom Snackbar layout and setting its source dynamically.
- Code (Kotlin):
```
// Example of adding icons to custom Snackbars
customSnackbarView.findViewById<ImageView>(R.id.snackbarIcon).setImageResource(R.drawable.ic_custom_icon)
```
Dynamic content in custom Snackbars example:
- Description: Including dynamic content in custom Snackbars involves updating the views within the custom layout dynamically based on the application's state or user interactions.
- Code (Kotlin):
```
// Example of dynamic content in custom Snackbars
val dynamicText = "Dynamic Text Content"
customSnackbarView.findViewById<TextView>(R.id.text1).text = dynamicText
```

Theming and styling custom Snackbars in Android:

Description: Theming and styling custom Snackbars involves applying styles to the views within the custom Snackbar layout. This can be achieved using styles and dimensions.

Code (Styles and Dimensions):

<!-- Example of styles and dimensions for custom Snackbar theming -->
<!-- styles.xml -->
<style name="CustomSnackbarStyle">
    <item name="android:background">@color/custom_snackbar_background</item>
    <item name="android:textColor">@color/custom_snackbar_text_color</item>
    <!-- Add more custom styling attributes as needed -->
</style>

<!-- dimensions.xml -->
<dimen name="custom_snackbar_padding">16dp</dimen>
<dimen name="custom_snackbar_icon_margin">8dp</dimen>
<dimen name="custom_snackbar_text_size">14sp</dimen>

// Example of applying styles to custom Snackbar
snackbarLayout.setBackgroundResource(R.style.CustomSnackbarStyle)