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- Detailed guide to creating and using databases in Android Chinese WORD version
- Every application uses data, and Android applications are no exception. Android uses an open source, operating system-independent SQL database--SQLite. This article introduces how to create and operate a SQLite database for your Android application. Database supports the lifeline of every application no matter how big or small. Unless your application only handles simple data, then you need a database system to store your structured data. Android uses SQLite database, which is an open source and supports multiple operating systems. SQ
- 2024-02-28 0 504
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- Android security and permissions WORD version
- This document mainly talks about the security and permissions of Android; Android is a multi-process system, and each application (and system component) runs in its own process. I hope this document will help friends in need; interested friends can come and take a look.
- 2024-01-28 2 1925
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- Android data storage SQLite database storage Chinese WORD version
- This document mainly talks about Android data storage SQLite database storage; each database in Android is private to the application package suite that created it. By default, other applications cannot directly access this private database. Friends in need can download and take a look
- 2024-02-26 0 1036
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- MATLAB language and control system simulation experiment Chinese WORD version
- "MATLAB Language and Control System Simulation Experiment" includes four parts: MATLAB language basics, MATLAB language basic experiments, control theory simulation experiments and experimental assignments. Each student is required to complete the experimental assignments independently after completing the prescribed experimental content to consolidate knowledge and enhance application capabilities. Interested friends can come and take a look
- 2024-01-18 2 2111
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- Loading modes of four Android activities WORD version
- This document mainly talks about the four loading modes of Android activities; the status of each activity is determined by its position in the activity stack (which is a LIFO that contains the queue of all running activities). The life cycle of Activty is also the life cycle of the process in which it is located. I hope this document will help friends in need; interested friends can come and take a look.
- 2024-02-29 0 1088
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- OpenGL programming based on MFC Chinese WORD version
- This document mainly talks about OpenGL programming based on MFC; GDI draws through the device handle (Device Context, hereinafter referred to as "DC"), while OpenGL requires a rendering environment (Rendering Context, hereinafter referred to as "RC"). Each GDI command requires a DC to be passed to it, but unlike GDI, OpenGL uses the current drawing context (RC). Once a current RC is specified in a thread, all subsequent O
- 2024-02-26 0 710
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- Android uses ViewFlipper to switch pages WORD version
- This document mainly talks about Android using ViewFlipper for page switching; the Android system comes with a multi-page management control: ViewFlipper. It can simply switch sub-pages. It only needs to use the addView method to add several Views. Each View Corresponding to one page, you can complete the management of multiple pages. I hope this document will help friends in need; interested friends can come and take a look.
- 2024-02-27 0 1053
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- Analysis of Android application message processing mechanism Chinese WORD version
- Android applications are driven by messages. The system maintains a message queue for each application. The main thread of the application continuously obtains messages from this message queue (Looper), and then processes these messages (Handler). , In this way, the execution of the application is driven by messages. This article will analyze the message processing mechanism of Android applications in detail. Friends in need can download and take a look
- 2024-02-28 0 1091
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- Tutorial on using SQLite database in Android development chm version
- Tutorial on Android development using SQLite database, chm format. SQLite is a very popular embedded database that supports SQL queries and uses only a small amount of memory. Android integrates SQLite at runtime, so every Android application can use a SQLite database. For developers familiar with SQL, using SQLite is fairly simple. Yes, since JDBC is not suitable for memory-constrained devices such as mobile phones, Android
- 2024-02-28 0 1067
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- Introduction to shell programming under Linux system Chinese WORD version
- This document mainly talks about the introduction to shell programming under Linux system; Shell programming has many features similar to C language and other programming languages, but it is not as complicated as programming languages. A shell program is a series of Linux commands and utilities placed in a file. When executed, each command is interpreted and executed one by one by Linux. Interested friends can come and take a look
- 2024-01-27 9 1888
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- Lucene index database Chinese WORD version
- This document mainly talks about the Lucene index database; Lucene, as an auxiliary tool for full-text search, performs conditional searches for us, whether it is search engines like Google, Baidu, search functions in forums, or other C/ S-architecture search brings great convenience and relatively high efficiency. This article mainly uses Lucene to index MS Sql Server 2000, and then performs full-text indexing. As for the content of the database, it can be the content of the web page or other things. Contents of the database in this article
- 2024-02-29 0 1142
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- The use of multi-threading technology in iOS development WORD version
- This document mainly talks about the use of multi-threading technology in iOS development; the so-called process corresponds to an application, which is responsible for opening up memory space for application use, but the process cannot execute tasks (instructions). A process contains at least one thread, which is the execution flow of the program. When an iOS program starts, while creating a process, it will start running a thread, which is called the main thread; I hope this document will help friends in need; interested friends can come and take a look.
- 2024-02-28 0 1125
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- python basic tutorial to lesson 60_python basic information word version
- Basic python tutorial to lesson 60. This tutorial introduces to you at the beginning, why to learn python, what are the advantages of python, etc. It will really make you want to learn python quickly. Why use Python as an introductory programming language? the reason is simple. Every language has its supporters and detractors. Go to Google "why python" and you will get a lot of results, such as wide range of applications, open source, active community, rich libraries, cross-platform, etc. You may also find
- 2024-01-25 0 1072
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- iOS development learning iOS multi-threading and RunLoop Chinese WORD version
- iOS multi-threaded programming is always difficult for iOS development beginners to understand and master. Now I will use several examples to gain a more systematic and comprehensive understanding of iOS multi-threaded programming. I hope it will be helpful to everyone. Some programs are a straight line from the starting point to the end; some programs are a circle that keeps looping until it is cut off. A straight line is like a simple Hello World. After running and printing, its life cycle is over, like a flash in the pan; a round one is like an operating system, which keeps running until you shut down. A running program is a process or a task, a process
- 2024-02-03 0 1789
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- Android basic tutorial translated by Zhang Bo and others pdf version
- "Basic Android Tutorial" is complete and rich in content and has strong versatility. Readers can quickly learn Android development and improve related skills through "Basic Android Tutorial". Android is a new open source mobile phone platform developed by Google. "Basic Android Tutorial" is a basic tutorial on Android development, using a step-by-step approach to discuss Android. The book also explains the basic process of Android development more vividly with examples such as Sudoku games, and there is a & at the end of each chapter.
- 2024-02-26 0 676
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- Matlab implementation of optimization method Chinese WORD version
- The technology of using optimization methods to solve optimization problems is called optimization technology, which includes two aspects: 1) Establishing a mathematical model, that is, using mathematical language to describe the optimization problem. The mathematical relationships in the model reflect the goals and various constraints to be achieved in the optimization problem. 2) Mathematical solution After the mathematical model is built, a reasonable optimization method is selected for solution. Using Matlab's optimization toolbox, you can solve linear programming, nonlinear programming and multi-objective programming problems. Specifically, it includes linear and nonlinear minimization, maximization, quadratic programming, semi-infinite problems,
- 2024-01-18 0 817
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- Android sensor programming Chinese WORD version
- This document mainly talks about Android sensor programming; a sensor is a physical device or biological organ that can detect and feel external signals, physical conditions (such as light, heat, humidity) or chemical composition (such as smoke), and will detect Information is passed to other devices or organs. At the same time, it can also be said that the sensor is a detection device that can sense the information being measured, and can transform the detected information into electrical signals or other required forms of information output according to certain rules to meet the needs of information transmission and Requirements for processing, storage, display, recording and control. It is the first to realize automatic detection and automatic control
- 2024-02-27 0 504
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- Python study notes and concise tutorials Chinese WORD version 2.03MB
- This document is python learning notes and concise tutorial; why use Python as an introductory programming language? Every language has its supporters and detractors. Go to Google "why python" and you will get a lot of results, such as wide range of applications, open source, active community, rich libraries, cross-platform, etc. You may also find a lot of criticisms about it, such as rigid format and low efficiency. , there are very few people using it in China. However, the weighing of these advantages and disadvantages is a worry for programmers. As someone who wants to learn some programming
- 2024-01-23 0 1274
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- RMI remote method call word version
- Raza Microelectronics, Inc. (RMI) is a leader in innovative semiconductor solutions for information infrastructure. Its products are widely used to improve the evolving information infrastructure. In this evolution process, the connections between data centers and homes are gradually upgraded in terms of strength and speed; security and intelligence have become requirements for every network system environment; at the same time, edge networks are increasingly becoming bottlenecks, prompting the industry to need more Intelligent network access method with scalability and cost advantages. RMI designs and provides a variety of information infrastructure
- 2024-01-27 0 933
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- Python module learning Chinese WORD version
- This document mainly talks about module learning in Python; Python is composed of a series of modules. Each module is a file with the suffix py. At the same time, the module is also a namespace, thus avoiding the problem of variable name conflicts. We can understand modules as lib libraries. If you need to use a function or object in a certain module, you must import this module before it can be used. Except for the system default modules (built-in functions), which do not need to be imported. I hope this document will help friends in need; interested friends can come and take a look.
- 2024-01-25 2 1042