Home Backend Development PHP Tutorial Android如何把数据转换成List<Map<string,string>>

Android如何把数据转换成List<Map<string,string>>

Jun 06, 2016 pm 08:42 PM
android json php

Android如何把数据转换成List<Map<string,string>>

Android如何用Gson把数据转换成List>?

具体问题:

我现在有任意长度的json数据,用php的json_encode()生成,如下格式

[{"rowID":"1","Name":"tqtqwet","Comment":"qewrtqwe"},{"rowID":"2","Name":"waf","Comment":"agsadga"},{"rowID":"3","Name":"android","Comment":"fafdadsf"},{"rowID":"4","Name":"android222","Comment":"fasdfas"},{"rowID":"5","Name":"fadfa","Comment":"adgasd"}]
Copy after login

现在想用把它转换成List>的格式,并用listView显示出来。其中hashmap的第一个键对应“Name”,第二个键对应“Comment”,“rowID”无视掉。请问怎么能最快捷地完成这种转换?如果有办法可以绕过也可以!谢谢

解决办法:

这个json数据格式很简单,不用你想象的那么复杂就能解析;

你需要一个JavaBean对象:

CustomClass.java:

    public class CustomClass {
     private String Name;
     private String Comment;
    public String getName() {
      return Name;
    }
    public void setName(String name) {
      Name = name;
    }
    public String getComment() {
      return Comment;
    }
    public void setComment(String comment) {
      Comment = comment;
    }
    }
Copy after login

MainActivity.java:

    public class MainActivity extends Activity {
    //你的json数据
    String jsonString="     [{\"rowID\":\"1\",\"Name\":\"tqtqwet\",\"Comment\":\"qewrtqwe\"},{\"rowID\":\"2\",\"Name\":\"waf\",\"Comment\":\"agsadga\"},{\"rowID\":\"3\",\"Name\":\"android\",\"Comment\":\"fafdadsf\"},{\"rowID\":\"4\",\"Name\":\"android222\",\"Comment\":\"fasdfas\"},{\"rowID\":\"5\",\"Name\":\"fadfa\",\"Comment\":\"adgasd\"}]";
        @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Type listType = new TypeToken<ArrayList<CustomClass>>(){}.getType();
    ArrayList<CustomClass> customList = new Gson().fromJson(jsonString, listType);
    }
    }
Copy after login

customList就是你想要的那个带有json数据的集合,你可以通过customList.get(index).getName() or getXXX()得到你想要的值

更多相关技术文章,请访问PHP中文网

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Apr 05, 2025 am 12:04 AM

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

PHP Program to Count Vowels in a String PHP Program to Count Vowels in a String Feb 07, 2025 pm 12:12 PM

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

How do you parse and process HTML/XML in PHP? How do you parse and process HTML/XML in PHP? Feb 07, 2025 am 11:57 AM

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

Explain late static binding in PHP (static::). Explain late static binding in PHP (static::). Apr 03, 2025 am 12:04 AM

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? Apr 03, 2025 am 12:03 AM

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.

PHP and Python: Comparing Two Popular Programming Languages PHP and Python: Comparing Two Popular Programming Languages Apr 14, 2025 am 12:13 AM

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

PHP: A Key Language for Web Development PHP: A Key Language for Web Development Apr 13, 2025 am 12:08 AM

PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7

Explain the match expression (PHP 8 ) and how it differs from switch. Explain the match expression (PHP 8 ) and how it differs from switch. Apr 06, 2025 am 12:03 AM

In PHP8, match expressions are a new control structure that returns different results based on the value of the expression. 1) It is similar to a switch statement, but returns a value instead of an execution statement block. 2) The match expression is strictly compared (===), which improves security. 3) It avoids possible break omissions in switch statements and enhances the simplicity and readability of the code.

See all articles