Graphic Design Unit 5 and 6

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What are some key components in Android development that facilitate communication between different parts of an application?

Intents, Services, and Broadcast Receivers

In Android development, what is used to initiate an action or request?

Intents

Which component in Android allows the application to perform long-running operations in the background?

Threading

How can an Android application store data for later use during the app's lifecycle?

Application Memory Signup and view all the answers

What Android component is responsible for listening to system-wide broadcast announcements?

Broadcast Receiver Signup and view all the answers

Why is it important for Android developers to understand the interaction between application components?

To create seamless user experiences and efficient app functionality. Signup and view all the answers

What is the main characteristic of web services in Android applications?

Web services are extensible markup language (XML) based. Signup and view all the answers

What is the difference between synchronous and asynchronous web services?

Synchronous web services stop user interaction until the function call returns, while asynchronous web services allow other interactions to continue. Signup and view all the answers

Name the three main web services that can be used in Android systems.

<ol> <li>Representational State Transfer (REST) 2. Simple Object Access Protocol (SOAP) 3. Remote Procedure Calls (XML-RPC)</li> </ol> Signup and view all the answers

How does REST facilitate communication between multiple systems?

REST allows multiple systems to communicate with each other. Signup and view all the answers

What is the purpose of SOAP in Android systems?

SOAP allows the exchange of data over HTTP or SMTP. Signup and view all the answers

How does XML-RPC enable information exchange among devices?

XML-RPC allows the exchange of information among devices using XML and HTTP. Signup and view all the answers

What is the purpose of wakelocks in Android systems?

Wakelocks in Android systems help to prevent the device from going to sleep when certain apps require continuous background processing. Signup and view all the answers

How does the Android system manage memory when users open multiple applications?

The Android system can terminate applications to free up memory when users open too many apps, as the system itself has limited memory space. Signup and view all the answers

Explain the role of HAL in Android devices.

The Hardware Abstraction Layer (HAL) in Android devices provides an interface between hardware components and the Java API framework, allowing applications to access hardware functionalities. Signup and view all the answers

What is ashmem in the context of Android systems?

Ashmem is Android's anonymous shared memory that enables unrelated processes to share memory in a secure and efficient manner. Signup and view all the answers

How does the binder and ashmem work together under memory pressure in Android systems?

The binder and ashmem reallocates memory when the system is under memory pressure, ensuring efficient memory management and sharing among processes. Signup and view all the answers

What happens when the Android system receives a request to access a specific hardware component?

When a request is made to access a hardware component, the Android system calls the corresponding HAL library module that implements the interface for that hardware component. Signup and view all the answers