Android Application Programming

discover object oriented programming in java, highlighting polymorphism, inheritance, and encapsulation through objects and classes. learn to wrap fields and access them via methods for object-to-object interaction.

Create a Java project and a dog class with name, breed, color, and age, then test it in a main method by printing its attributes and walking or barking behaviors.

Explore how interfaces enable adding features beyond the inheritance tree in Java, where dog, cat, and human implement a food interface with an eat method under the contract.

Explore defining and implementing a simple food interface in Java, showing how Dog and Cat classes implement the eat method (an abstract method) to fulfill the interface contract.

Declare instance variables inside a class; each object has unique values for these variables. Illustrate how a dog's breed becomes an instance variable with values such as bulldog or boxer.

Discover how static variables share one copy across all class instances, accessible via the class name or objects, in Android application programming.

Explore the theoretical and practical use of multidimensional arrays as string containers organized in rows and columns, including defining, indexing, and printing elements.

Explore the main types of Java operators, including arithmetic for math, logical for boolean operations, comparison to evaluate two values, and the concatenation operator for string joining.

Learn how the comparison operator evaluates less than, greater than, equal to, and not equal to, returning true or false and distinguishing it from assignment.

Discover how the concatenation operator joins two strings with the plus sign, and learn when to use it over arithmetic operators in Android programming, including converting primitive values to wrappers.

Explore decision making with if-else in Android app programming, evaluating conditions using comparison and logical operators, and handling true and false branches with else and else-if.

Demonstrate how a switch-case statement selects code blocks by value, using cases and breaks, with a default path and example outputs like Sunday and Monday.

Design a simple input/output app using an activity, with a text input, a button, and display text; learn to bind UI components, handle on-click events, and update the output.

Learn how to pass data between Android activities with intents, using putExtra and getStringExtra with keys to send user name and password, and compare explicit versus implicit intents.

Explains explicit intents stay within the app to navigate between activities, while implicit intents launch other apps via action strings and categories, e.g., opening a browser with a chooser.

Explore implicit intents in Android by wiring a login button in one app to open a second app’s activity, using intent filters and manifest configuration to enable cross-app component communication.

Explore using implicit intents to share data and launch system apps, such as opening links in a browser, dialing numbers, or checking media with action view.

Learn how broadcast receivers listen for system events like power on/off, battery changes, and connectivity. Register via manifest or runtime and understand api level 26 restrictions.

Learn to implement an implicit broadcast receiver in Android to monitor power connected and power disconnected events, register it in the manifest, and log actions for testing.

Register a broadcast receiver to monitor Android airplane mode changes and connectivity actions, using intents and manifest declarations, and manage its lifecycle with on destroy and unregister receiver.

Explore how to create an Android linear layout, set orientation, padding, and dimensions, and use a ScrollView to manage many components in an app.

Create adaptive launcher icons for Android using vector graphics in Android Studio, ensuring compatibility across device densities. Manage foreground and background layers and preview icons for different devices.

Apply material design to Android buttons by creating text, image, and image-with-text buttons, arranging them in a vertical layout, and using drawable resources to customize their look.

Master how to implement checkboxes, radio buttons, and toggle buttons in Android apps, attach listeners for selection changes, manage radio groups, and display feedback with toasts.

Learn to implement toggle buttons, checkboxes, radio buttons, and switches in Android apps, wire on/off listeners, and update UI text to reflect each control’s state.

Learn to implement an Android spinner to create a dropdown, populate it from string resources or a list, and handle item selections with an item selected listener and a toast.

Create an interactive time picker dialog in an Android app, attach two buttons to select time and date, and display the month, day, and time in text views.