gson

问题 I need to convert a Vector<Vector<Float>> to a JSONArray . Apart from iterating through the vector and creating the JSONArray , is there any simpler way to do this? Someone told me to try gson. 回答1: SharedPreferences is just a key-value store. What's stopping you from bypassing JSONObject completely, and just using something like this (Gson only)? private static final Type DATA_TYPE = new TypeToken<Vector<Vector<Float>>>() {}.getType(); Storage: Vector<Vector<Float>> data = new Vector<Vector

问题 This question already has answers here : What is a NullPointerException, and how do I fix it? (12 answers) Closed 3 years ago . GSON throwing null pointer exception when a field is missing in json ReviewClass: public class ReviewClass { private String name; private List<Review> reviews; public String getName() { return name; } public void setName(String name) { this.name = name; } public List<Review> getReviews() { return reviews; } public void setReviews(List<Review> reviews) { this.reviews

问题 I am creating an application which it will send http request to a web server. The return will be in json . Here is how the json look like [//I used a tool to make it beautiful and easy to read. { "item_name": "Adame", "item_type": "Special", "item": "Chestplate", "item_min_lvl": "50", "enchantment": { "health": "0.3", "dam": "24%", "life": "0.1", "xp": "24%", "loot": "22%" }, "def": "73" }, { "item_name": "Sticks'", "item_type": "Unique", "item": "Stick", "item_min_lvl": "4", "enchantment": {

问题 I ran into a problem when developing an application that uses Gson to serialize objects and deserialize them. However, I ran into a problem that I cannot explain the cause of and after a while, I narrowed down the problem to this SSCCE: import com.google.gson.Gson; /** * demonstrates the issue at hand */ public class Probs { public Probs () { //holds the byte array form of the JSON data byte[] info = new byte[1]; //get the JSON for a data object and store it in the byte array Gson gson = new

问题 I'm using GSON for parsing response from a Volley request and got stuck in creating a GSON format when the response has a property that can either be a string or an object or an array perhaps... e.g content { "data": { "date_updated": "2016-12-21T03:55:29.955Z", "date_created": "2016-12-21T03:55:29.955Z", "content": "String here", "content": { "longitude": "", "latitude": "" }, "status": "PROC", "_id": "5859fd31a93c7235575d62db" } } My current process in creating a GSON model is: Create a

问题 I have seen a ton of questions like this, however I have still been unable to resolve this issue. I received a json from my server that has multiple gson arrays. How can I deserialize my response from the server to satisfy these models. Subject Model: public class Subject { public int SubjectId; public String SubjectName; public ArrayList Courses; } Course Model: public class Course { public String CourseName; public String CourseDescription; public int CourseId; public int Subject_SubjectId;

问题 I am trying to serialize an Object of Class (let's say MyClass) Here is roughly how MyClass.java looks like: public class MyClass { private static final AtomicInteger variableOne = new AtomicInteger(); private static final AtomicInteger variableTwo = new AtomicInteger(); private static final AtomicInteger variableThree = new AtomicInteger(); private static final AtomicInteger variableFour = new AtomicInteger(); /* * Have the getters and setters here */ } I am trying to convert object of the

问题 I am trying to map below JSON to a POJO Class using Gson library. Below is the JSON response and POJO Class and mapping done import java.util.Map; import com.google.gson.JsonElement; public class DataResponse { private String $status; private Map<String, JsonElement> $payload; public String get$status() { return $status; } public void set$status(String $status) { this.$status = $status; } public Map<String, JsonElement> get$payload() { return $payload; } public void set$payload(Map<String,

问题 This is currently the code that I'm using: /** * Volley adapter for JSON requests that will be parsed into Java objects by Gson. */ public class GsonRequest<T> extends Request<T> { private final Gson gson = new GsonBuilder() .registerTypeAdapter(ClusterUnits.class, new ClusterUnitsDeserializer()).create(); private final Class<T> clazz; private final Map<String, String> headers; private final Listener<T> listener; private JSONObject parameters = null; /** * Make a GET request and return a

问题 I have not included gson-2.3.1.jar to my dependencies on gradle.build file. But it gives me below error when going to sync it. Error:A problem occurred configuring project ':app'. Could not download gson.jar (com.google.code.gson:gson:2.3.1) Could not get resource 'https://jcenter.bintray.com/com/google/code/gson/gson/2.3.1/gson-2.3.1.jar'. Could not GET 'https://jcenter.bintray.com/com/google/code/gson/gson/2.3.1/gson-2.3.1.jar'. Connection to https://jcenter.bintray.com refused Why it gives