如何从本地json文件中获取数据?

I created a json file locally. I can view that in data>data>com.example.storage>files>filename.json. Using this, I want to fetch all the text values locally & download all images and save it in SD card from Image URL which is available in the json file. And in offline mode Itself I can load all the text values from json file as well as images from SD card. I created a json file locally. I can view that