blocks|key|483805|text|当你在Android中处理JSON数据时，你会使用JSONArray来解析以数组括号开头的JSON。JSON中的数组用于组织相关项的集合(可以是JSON对象)。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|483806|例如：[{"name":"item+1"},{"name":+"item2}+]|483807|另一方面，在处理以大括号开头的JSONObject时，可以使用JSON。JSON对象通常用于包含与一项相关的键/值对。例如：{"name":+"item1",+"description":"a+JSON+object"}|483808|当然，JSON数组和对象可以相互嵌套。这方面的一个常见示例是API，它返回一个JSON对象，其中包含一些元数据以及与查询匹配的项的数组：|483809|{"startIndex":+0,+"data":+[{"name":"item+1"},{"name":+"item2"}+]}|code-block|syntax|javascript|483810|entityMap^0|P|9|0|3|11|0|F|A|1Q|1C|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|V|8|@$9|W|A|X|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|Y|8|@$9|Z|A|10|B|C]|$9|11|A|12|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|13|8|@]|D|@]|E|$]]|$1|L|3|M|5|N|7|14|8|@]|D|@]|E|$O|P]]|$1|Q|3|-4|5|6|7|15|8|@]|D|@]|E|$]]]|R|$]]

When you are working with JSON data in Android, you would use <code>JSONArray</code> to parse JSON which starts with the array brackets. Arrays in JSON are used to organize a collection of related items (Which could be JSON objects). 
For example: <code>[{"name":"item 1"},{"name": "item2} ]</code>

On the other hand, you would use <code>JSONObject</code> when dealing with JSON that begins with curly braces. A JSON object is typically used to contain key/value pairs related to one item.
For example: <code>{"name": "item1", "description":"a JSON object"}</code>

Of course, JSON arrays and objects may be nested inside one another. One common example of this is an API which returns a JSON object containing some metadata alongside an array of the items matching your query:

<pre><code>{"startIndex": 0, "data": [{"name":"item 1"},{"name": "item2"} ]}
</code></pre>

blocks|key|266944|text|我总是使用对象，它更容易扩展，而JSON数组则不是。例如，您最初有一些数据作为json数组，然后您需要在其上添加一个状态标头，除非您将数据嵌套在一个对象中，否则会有点卡住。唯一的缺点是创建/解析的复杂性略有增加。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|266945|因此，不是|266946|[datum0,+datum1,+datumN]|code-block|syntax|javascript|266947|你就会有|266948|{data:+[datum0,+datum1,+datumN]}|266949|然后您可以添加更多...|266950|{status:+"foo",+data:+[datum0,+datum1,+datumN]}|266951|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|V|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|W|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|P|5|F|7|Y|8|@]|9|@]|A|$G|H]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

I always use object, it is more easily extendable, JSON array is not. For example you originally had some data as a json array, then you needed to add a status header on it you'd be a bit stuck, unless you'd nested the data in an object. The only disadvantage is a slight increase in complexity of creation / parsing.

So instead of 

<pre><code>[datum0, datum1, datumN]
</code></pre>

You'd have 

<pre><code>{data: [datum0, datum1, datumN]}
</code></pre>

then later you can add more...

<pre><code>{status: "foo", data: [datum0, datum1, datumN]}
</code></pre>

blocks|key|267018|text|当JSON以{}开头时，它是一个对象JSON+object；当它以[]开头时，它是一个数组JOSN+Array|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|267019|JSON数组可以由一个/多个对象组成，这称为对象数组|267020|entityMap|0|LINK|mutability|MUTABLE|url|https://i.stack.imgur.com/ppaQd.jpg|1|https://i.stack.imgur.com/OdfJd.jpg^0|I|B|0|19|A|1|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]|$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]]]

When a JSON start's with {} it is a Object<a href="https://i.stack.imgur.com/ppaQd.jpg" rel="nofollow noreferrer">JSON object</a>
and when it start's with [] it is an Array <a href="https://i.stack.imgur.com/OdfJd.jpg" rel="nofollow noreferrer">JOSN Array</a>

An JSON array can consist of a/many objects and that is called an array of objects

After having a short look at Google I found this <a href="http://www.dotnetfunda.com/interview/exam4309-difference-json-arrary-vs-json-object.aspx" rel="noreferrer">link</a> that describes the difference, yet from a syntax point of view.

When would one be preferred over the other in a programming scenario?

Difference between JSONObject and JSONArray

Android

JSON

在看了一下谷歌之后，我发现了这个，它描述了不同之处，但从语法角度来看。在编程场景中，什么时候会优先选择其中一个？

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