#jsonobject

Read data from GitHub hosted json file in Flutter

This is my first flutter tutorial, which explain how you can host and read json data from GitHub repository.

First up all you need to host json in GitHub Page , here is the complete guide. After that you can read the data using http package in Flutter.

First up all you need to specify the pubspec.yml settings as follows

dependencies: flutter: sdk: flutter http: ^0.12.0+2

Go to…

Create and read simple JSON_STRING in Android Studio

JSON_STRING strings are similar to Dictionary and List in Python, they can be searched quickly. JSON_STRING can be used to store data for your application.

This post will teach you how to create and read JSON_STRING objects in Android Studio/Eclipse Android apps.

Go ahead and create a simple activity app

Switch to Android View

Create simple JSON_STRING as follows in the MainActivity.Java class

St…

JSONObject toString() causes Out Of Memory on a 1495472-byte allocation

I am using the following device to test my app:

I am posting a JSON string that is about 498467 bytes (0.48MB) in size.

When my app syncs this data, it fails when I toString() the JSONObect e.g:

JSONObject jsonObj = new JSONObject(); ... ClientMyAppApi.Upload(getContext(), account.name, jsonObj.toString()); // Out of memory here

Here is the LogCat transcript:

D/dalvikvm(21964): GC_CONCURRENT…

Using java 8 Optional with JSONObject?

GIVEN:

JSONObject o = <populated from json source>; if (o.has("stuff") && response.getJSONObject("stuff").has("stuffList") && o.getJSONObject("stuff").getJSONArray("stuffList").size() > 0) { doStuff() }

ASK: How can I rewrite the above using java.util.optional so that I don’t have to make al those json object checks?

Something like:

java.util.Optional _O =…