To use the shared_preferences plugin, we have to import it into our file: import 'package:shared_preferences/shared_preferences.dart' This will install the latest version of the dependency. Open the pubspec.yaml file and add shared_preferences in the dependencies section: dependencies: Now that we have the Flutter SDK ready and set, it’s time to install the shared_preferences plugin. You can open the project using VS Code or Android Studio. This command creates a folder, shared_pref, and places a Flutter project inside it. To scaffold a Flutter project, run the following command: flutter create shared_pref To use Android Studio to develop Flutter projects, you’ll need to install the following plugins: Head to the official website to download and install Android Studio on your machine. Android Studio is the official IDE/SDK used for building, testing, and publishing Android apps. We’ll be developing for the Android OS and we’ll need an emulator to test our apps on the run. Your version may be different from mine but you should be able to verify that the Flutter SDK was successfully installed. Click here to see the full demo with network requests ➜ flutter -version To install the Flutter SDK on our machine, you need to choose your Flutter binary as per your machine below:Īfter the installation, you will have the Flutter CLI available globally in your system. You’ll need to have some tools and binaries already installed on your machine, including the Flutter SDK and Android Studio. Let’s walk through how to scaffold a Flutter project, add the shared_preferences plugin to a Flutter project, and the methods exposed to us by the plugin. The plugin wraps NSUserDefaults on iOS and SharedPreferences on Android. To use SharedPreferences in Flutter, a plugin called shared_preferences enables us to store data. SharedPreferences stores the data in a key-value pair. The data stored in SharedPreferences can be edited and deleted. This data exists even when the app is shut down and starts up again we can still retrieve the value as it was. SharedPreferences is what Android and iOS apps use to store simple data in an allocated space. Implementing a splash screen using SharedPreferences.We’ll cover the following with practical examples: In this tutorial, we’ll demonstrate how to persist and modify data using SharedPreferences in a Flutter app. SharedPreferences can be used to store critical data such as passwords, tokens, and complex relational data. With SharedPreferences, you can configure your Flutter app to remember the data even after the user terminates their activity. A common use case for this functionality is storing login credentials to be recalled the next time the user launches the app. There may come a time when you want to persist data in your Flutter app so you can reuse it later. Using SharedPreferences in Flutter to store data locally My language of choice is JavaScript frameworks are Angular and Node.js. I've worked with different stacks, including WAMP, MERN, and MEAN. GetMenuInflater().inflate(R.menu.Chidume Nnamdi Follow I'm a software engineer with over six years of experience. ![]() decodeByteArray(decodedByte, 0, boolean onCreateOptionsMenu(Menu menu) Public static Bitmap decodeBase64(String input)īyte decodedByte = code(input, 0) String imageEncoded = Base64.encodeToString(b, Base64.DEFAULT) Public static String encodeTobase64(Bitmap image)īyteArrayOutputStream baos = new ByteArrayOutputStream() Iv.setImageBitmap(codeFile(picturePath)) ītmap=codeFile(picturePath) //decode method calledĮditor editor = sharedpreferences.edit() Įditor.putString(key, encodeTobase64(btmap)) ImageView iv = (ImageView) findViewById(R.id.imageView1) String picturePath = cursor.getString(columnIndex) Int columnIndex = cursor.getColumnIndex(filePathColumn) Public static String encodeTobase64(Bitmap image) Ĭursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null) Write Method to encode your bitmap into string base64- // method for bitmap to base64 I solved your problem do something like that:
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