- Simple android application to read data from json file software#
- Simple android application to read data from json file code#
Our plan is to fill our JSON data inside this div dynamically. Pretty simple right? We have just a simple div with the id myData. Displaying the JSON dataīefore we display our JSON data on the webpage, let’s just see how the body of our index.html file looks like. Normally you would display an error message to the user if something went wrong. Notice that in our catch function, we are just writing the error message to out console.
Simple android application to read data from json file code#
This is where we create the code which will append the data to our page. Notice that we are calling a function called appendData. Now we can take this data and display it on our HTML page. This data looks just like the data in our JSON file. In the second then function we get the actual JSON data as a parameter. This is why we just return it and chain another then function. The json() function also returns a promise. To get the JSON data from the response, we execute the json() function. After the file has been read from disk, we run the then function with the response as a parameter. Here we are fetching our people.json file.
Let us see how this will look in out example: fetch('people.json') If anything goes wrong (like the JSON file cannot be found), the catch function will run. When the JSON data is fetched from the file, the then function will run with the JSON data in the response. The fetch function will return a promise. We don’t have to drill down to any directory since the json file is in the same directory as our index.html. In our case it is just the filename people.json.
The url parameter used in the fetch function is where we get the JSON data. If an error occured, you will catch it here We use the fetch API in the following way: fetch(url) We will fetch this data by using the fetch API. To be able to display this data in our HTML file, we first need to fetch the data with JavaScript. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES LOSS OF USE, DATA, OR PROFITS OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.3 Why use Vanilla JavaScript? Fetching the JSON data
Simple android application to read data from json file software#
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: We are using Android Tree View List by Polidea. It is derived from the JavaScript scripting language for representing simple data structures and associative arrays, called objects. JSON (JavaScript Object Notation) is a lightweight data-interchange format. This app is for you if you are a developer, if you need to test a web service from time to time, or are just interested in JSON data format. Also you can now view JSON files sent as e-mail attachments. At any time you can switch to tree-view to see the structure of your data. Use copy/pasting, open it from sd card or load from an URL to get the JSON into the app, then you can use the auto-format function or remove whitespaces. **If you have any suggestions, please e-mail us!** Visualize, edit and format JSON data right on your Android device.
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