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

What Are the Different Types of Bars Available on Android?

In Android development, various types of "bars" serve different purposes in the UI. Here's a rundown of the most commonly used bars:

ActionBar: This is a primary toolbar within the activity that may display the activity title, application-level navigation affordances, and other interactive items. The ActionBar was the original solution for this UI pattern but has largely been replaced by the more flexible Toolbar.
Toolbar: Introduced in Android 5.0 (Lollipop) with the Material Design UI guidelines, the Toolbar is a more generalized and flexible version of the ActionBar. It can be placed anywhere in your layout and can also be customized more easily. It can display branding, navigation, search, or any custom action items.
BottomAppBar: A part of the Material Design guidelines, this is a bar that appears at the bottom of the screen and lets you place actions and navigation at a location that can be more ergonomic for larger screens. It can be combined with the FloatingActionButton.
NavigationBar: This is the system bar at the bottom of many devices that contains the soft buttons (Back, Home, Recent Apps, etc.). Its appearance and behavior can vary by device manufacturer, OS version, and user settings.
StatusBar: This is the system component at the top of the display that shows notification icons, system time, battery level, and other system status indicators.
SearchBar: This isn't a native component by default, but many apps implement a search bar at the top of their layouts to let users search through app content. This can often be combined with the Toolbar.
TabBar: This is typically a row of tabs that can be used for high-level navigation. While it can be manually created with TabLayout and ViewPager, the modern way to implement it is with TabLayout and ViewPager2.
SnackBar: This is a lightweight feedback mechanism to show short messages at the bottom of the screen. It's not a "bar" in the same sense as the others, but its name and typical position make it relevant to this list. SnackBar can show a brief message with an optional action.

Remember that the right choice of bar largely depends on the specific needs and design goals of your app. With modern Android development, particularly with the introduction of Material Design, there's flexibility to adapt these bars to a range of use cases. Always consider the user experience and ensure that UI components are used consistently and intuitively.

Customizing ActionBar in Android:
- Customize the ActionBar by modifying its appearance, adding icons, and handling actions.
- Example:
```
ActionBar actionBar = getSupportActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
```

BottomNavigationView in Android Apps:

A view containing navigation items, typically used with fragments.

Example:

<com.google.android.material.bottomnavigation.BottomNavigationView
    android:id="@+id/bottomNavigationView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:menu="@menu/bottom_nav_menu"/>

Search Bar Implementation in Android:

Create a search interface using SearchView.

Example:

<SearchView
    android:id="@+id/searchView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"/>

Material Design Top App Bar in Android:

Use the Material Design top app bar for a modern and consistent look.

Example:

<com.google.android.material.appbar.MaterialToolbar
    android:id="@+id/topAppBar"
    android:layout_width="match_parent"
    android:layout_height="?attr/actionBarSize"/>

TabLayout and ViewPager in Android:

Combine TabLayout with ViewPager for a tabbed interface.

Example:

TabLayout tabLayout = findViewById(R.id.tabLayout);
ViewPager viewPager = findViewById(R.id.viewPager);

BottomAppBar in Android UI Design:

A bottom app bar that holds actions, typically used with a FloatingActionButton.

Example:

<com.google.android.material.bottomappbar.BottomAppBar
    android:layout_width="match_parent"
    android:layout_height="wrap_content"/>

Snackbar and Its Usage in Android:
- Display lightweight feedback messages.
- Example:
```
Snackbar.make(view, "This is a Snackbar", Snackbar.LENGTH_SHORT).show();
```

CollapsingToolbarLayout in Android:

Allows the collapsing of the toolbar when scrolling.

Example:

<com.google.android.material.appbar.CollapsingToolbarLayout
    android:id="@+id/collapsingToolbarLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_scrollFlags="scroll|exitUntilCollapsed">

Android ActionMode and Contextual Action Bars:
- ActionMode provides a contextual action bar for selected items.
- Example:
```
listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL);
```

Progress Bars in Android UI Development:

Display progress using ProgressBar.

Example:

<ProgressBar
    android:id="@+id/progressBar"
    style="?android:attr/progressBarStyleHorizontal"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"/>

Using ProgressBar in Android with Different Styles:

Customize the style of the ProgressBar.

Example:

<ProgressBar
    android:id="@+id/progressBar"
    style="@style/Widget.AppCompat.ProgressBar.Horizontal"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"/>