desktop support interview questions

image update relies on onTouch for update, you can use invalidate directly. In this case, this Touch and the next Touch take a longer time and will not be affected.2) Actively update. For example, a person is always running. This requires a separate thread to repeatedly repaint the state of the person, to avoid blocking the main UI thread. Obviously, the view is not suitable and needs surfaceView for control. Android interview

Summary of Java back-end development interview questions of major companies, and java back-end interview questions ThreadLocal (thread variable copy) Synchronized implements Memory sharing. ThreadLocal maintains a local variable for each thread. It uses space for time, which is used for data isolation between threads

methods related to message sending.5. pipe is not clear about the binder Mechanism. The socket uses sockets to send content for ipc. The binder uses shared memory and servicemanager as the service manager.6 surfaceflinger manages windows,7. bionic is a simplified version of glic.Android interview questions 1. PrefaceIn June 26, Google Android released NDK, which aroused the interest of many developers. NDK

object change, the browser can automatically reproduce the image. Canvas Canvas uses JavaScript to draw 2D images.Canvas is rendered by pixel.In the canvas, once the image is drawn, it will not continue to get the attention of the browser. If its position changes, the entire scenario also needs to be re-drawn, including any objects that may have been overwritten by the image. Comparison between Canvas and SVG Canvas Dependency resolutionEvent processor not supportedWeak text rendering capabilit

Web Front-end interview questions, web interview questionsWelcome to reprint, but please indicate the source: http://blog.csdn.net/sysuzjz/article/details/44562467 The following questions come from the questions I have asked when applying for an application from various comp

Java interview questions, Java interview questionsInterview is something that everyone has to go through. Most people have more than one interview. Here we will summarize the latest interview questions for 2016, so that you can ge

10 most common HTML5 interview questions with answers, html5 interview questions with answers This article shares the 10 most common HTML5 interview questions. Question 1: What is the new HTML5 document type and character set? A

Unity comprehensive interview questions (including answers) and unity interview questions 1. What is a collaborative program? Enable another logic processing when the main thread runs to assist in the execution of the current program. The coroutine is like multithreading, but not multithreading, the Unity coroutine che

Account can further unify the connection string, but this poses a security risk to the system. Interview question 46Which two methods does ADO. NET support to access relational databases?ADO. NET supports two database access methods: Connection and offline. The connector is suitable for reading large data volumes and cannot accurately predict the number of records to be read. The offline connector is more

Spring Interview Questions and Answers, Spring interview questions Spring Overview 1. What is spring? Spring is an open source development framework for java Enterprise applications. Spring is mainly used to develop Java applications, but some extensions are used to build web applications on the J2EE platform. The Spri

BAT and major Internet companies 2014 front-end written interview questions: Html/cssHTML article:1. Which of the Web pages do you test? What are the cores of these browsers? Ie:trident kernel Firefox:gecko kernel Safari:webkit kernel Opera: formerly the Presto kernel, opera has now switched to Google Chrome's blink kernel Chrome:blink (co-developed with Opera Software based on Webk

Interview Questions: Differences and connections between distributed and cluster, Interview Questions Cluster I. Differences:In a word, distributed systems work in parallel, and clusters work in tandem.1. Distributed refers to the distribution of different services in different places. A cluster refers to the combinat

Hadoop interview questions (1) and hadoop interview questions I. Q : 1. Briefly describe how to install and configure an apache open-source version of hadoop. You only need to describe it. You do not need to list the complete steps and the steps are better. 1) install JDK and configure environment variables (/etc/profi

mode. Binder Communication mode:A, telephone base station: Binder Driveb, the communication record: ServiceManagerHere is an example of a comparative image to illustrate the above communication and telephone base station in the binder communication model of the role: a classmate to call the B classmate, first a reunion to find B classmate's phone number, and ServiceManager driver's role is equivalent to the address book, There are some similar phone numbers on both sides of the communicatio

Java --- Java interview questions (1), java --- java interview questions 1. What is a Java Virtual Machine? Why is Java called a platform-independent programming language "? Java virtual machine is a virtual machine process that can execute Java bytecode. Java source files are compiled into bytecode files e

As programmers, we are people who have dreams, sometimes when we are not satisfied with the status quo, want to further enhance their ability to expand their horizons, job-hopping may be a choice we will eventually face. But our work is all day and computer dealings, resulting in our interpersonal communication, communication is not very strong, in the interview we often have to prepare very well, in order to get a good job of the right, then I give y

During the interview, the interviewer will ask the applicant, and the applicant's answer will become an important basis for the interviewer to consider whether to accept him. It is vital for candidates to understand the "tricky" behind these issues. This article sorts out some typical questions that often occur during interviews, and provides corresponding answers and reference answers. Readers do not need

During the interview, the interviewer will ask the applicant, and the applicant's answer will become an important basis for the interviewer to consider whether to accept him. It is vital for candidates to understand the "tricky" behind these issues. This article sorts out some typical questions that often occur during interviews, and provides corresponding answers and reference answers. Readers do not need

original types, and to use the standard placeholders that are used in the JDK.7. Write a generic program to implement LRU caching?This is the equivalent of an exercise for people who like Java programming. To give you a hint, linkedhashmap can be used to implement a fixed-size LRU cache, which moves the oldest key-value pairs out of the cache when the LRU cache is full. Linkedhashmap provides a method called Removeeldestentry (), which is used by the put () and Putall () calls to delete the old

virtual.Attention:If you do not need a base class to manipulate derived classes and objects, you cannot define virtual functions, including virtual destructors, because this increases memory overhead.How C + + makes the function of the returned object not call the copy constructor"Explicit" keyword before copy constructor35. Orphan process and zombie processHttp://www.cnblogs.com/Anker/p/3271773.htmlWritten and interview