Parse json array in android with free source code download

parse any json of the form [{},{}...]

free source code zip download

We will be using retrofit,gson for parsing, so go to your app level build.gradle and add the following as dependencies

implementation 'com.squareup.retrofit2:retrofit:2.0.0-beta4'

implementation 'com.squareup.retrofit2:converter-gson:2.3.0'

please add the latest dependency versions for retrofit, converter-gson

Hi, in this tutorial we are about to parse the below json array. Check this json array >> https://navneet7k.github.io/sample_array.json

Clearly, the json is of the form [{},{}..] . It is a json array, hence we can parse it as a list from android

Now inorder to generate model class/pojo class for above json, you may either create it automatically using http://www.jsonschema2pojo.org/ or generate it manually

1) Automatic model class/pojo class generation using http://www.jsonschema2pojo.org/

• So, first of all, go to http://www.jsonschema2pojo.org/
• Paste the json https://navneet7k.github.io/sample_array.json in the box provided 

Specify Target language as Java, Source Type as JSON and annotation style as Gson

• Now click preview and copy the generated java files

Now copy the contents of the class and add it in android studio project

Now in the android studio project, create a new java file Cars.java and add the above generated code inside it like shown below

Cars.java

public class Cars {
    @SerializedName("id")
    @Expose
    private String id;
    @SerializedName("name")
    @Expose
    private String name;
    @SerializedName("desc")
    @Expose
    private String desc;

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getDesc() {
        return desc;
    }

    public void setDesc(String desc) {
        this.desc = desc;
    }
}

Since the json is an array, we can parse it as a list like this <List<Cars>> from android. So add the below code in your MainActivity.java file

MainActivity.java

private void parseJson() {
        Retrofit retrofit = new Retrofit.Builder()
                .baseUrl("https://navneet7k.github.io/")
                .addConverterFactory(GsonConverterFactory.create())
                .build();

        RequestInterface request = retrofit.create(RequestInterface.class);
        Call<List<Cars>> call1=request.getJson();
        call1.enqueue(new Callback<List<Cars>>() {
            @Override
            public void onResponse(Call<List<Cars>> call, Response<List<Cars>> response) {
                Toast.makeText(MainActivity.this,"Success!",Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onFailure(Call<List<Cars>> call, Throwable t) {
                Toast.makeText(MainActivity.this,"Failure",Toast.LENGTH_SHORT).show();
            }

        });
    }

RequestInterface.java

interface RequestInterface {
    @GET("sample_array.json")
    Call<List<Cars>> getJson();
}

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You may also check this tutorial to parse a json array into recyclerview