How to use a downloaded file (ionic 2)

Question

I am making an app for android/ios using ionic 2. I want to download a JSON file from a specific url on the net and then use it inside my app. This code is how I download:

const imageLocation = `my url for .json file`;  
if (this.platform.is('ios')) {
    targetPath = cordova.file.applicationStorageDirectory + "data.json";
}
else if(this.platform.is('android')) {
    targetPath = cordova.file.dataDirectory + "data.json";
    console.log(cordova.file.dataDirectory + "data.json");
}
fileTransfer.download(imageLocation, targetPath).then((entry) => {
    const alertSuccess = this.alertCtrl.create({
        title: `Download Succeeded!`,
        subTitle: `file was successfully downloaded to: ${entry.toURL()}`,
        buttons: ['Ok']
    });
    alertSuccess.present();
}, (error) => {....

I want to use this downloaded file in my provider to fetch data from it. How can I do that?

Answer 1

If you want to save the file, you can choose among many options:

• Save it in localStorage
• Save it in a SQLite database
• Use WebStorage
• Use new technologies like CouchDB, etc.

Alternatively, if the file is not very large, feel free to simply store it in a local variable of the provider, i.e. just add a setter method in your provider and pass the JSON object to it, so that it stores it in your provider. Note that in this case the data will be lost when the app is restarted.