How do you create a JSON file on Android?

2 years ago
William Carter
1 minute

In Android, you can create a JSON file by following these steps:

  1. JSON object
JSONObject jsonObject = new JSONObject();
  1. place
jsonObject.put("key1", "value1");
jsonObject.put("key2", "value2");
  1. JSONObject can be converted into a string representation of JSON data.
String jsonString = jsonObject.toString();
  1. You can write JSON data to a file. First, you need to obtain a file output stream.
FileOutputStream outputStream;
try {
    outputStream = openFileOutput("data.json", Context.MODE_PRIVATE);
    outputStream.write(jsonString.getBytes());
    outputStream.close();
} catch (Exception e) {
    e.printStackTrace();
}

The above steps will create a JSON file named “data.json” and write the contents of the JSONObject into it.

Note: Permissions related to file operations need to be added in the AndroidManifest.xml file.

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
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