Yes we can do this using Gson Download Working code from GitHub SharedPreferences mPrefs = getPreferences(MODE_PRIVATE); For save Editor prefsEditor = mPrefs.edit(); Gson gson = new Gson(); String json = gson.toJson(myObject); // myObject – instance of MyObject prefsEditor.putString(“MyObject”, json); prefsEditor.commit(); For get Gson gson = new Gson(); String json = mPrefs.getString(“MyObject”, “”); MyObject obj = … Read more
No implementation found for method getAll on channel plugins.flutter.io. The above will occur when you setup the plugin for the first time, so it has to be reinstalled. Therefore, uninstall and reinstall your application.
I’m glad you’re already playing with it! Some things to note: (in lazy bullet form) if this is the worst of your problems, your app’s probably in a good spot. 🙂 Writes are generally slower than reads, though, so be sure you’re using SharedPreferenced$Editor.apply() instead of commit(). apply() is new in GB and async (but … Read more
Use NSUserDefaults: – note that this is for small bits of data, such as the current level like you mentioned. Don’t abuse this and use it as a large database, because it is loaded into memory every time you open your app, whether you need something from it or not (other parts of your app … Read more
Shared Preferences are stored as a file in the filesystem on the device. They are, by default, stored within the app’s data directory with filesystem permissions set that only allow the UID that the specific application runs with to access them. So, they are private in so much as Linux file permissions restrict access to … Read more
Setting values in Preference: // MY_PREFS_NAME – a static String variable like: //public static final String MY_PREFS_NAME = “MyPrefsFile”; SharedPreferences.Editor editor = getSharedPreferences(MY_PREFS_NAME, MODE_PRIVATE).edit(); editor.putString(“name”, “Elena”); editor.putInt(“idName”, 12); editor.apply(); Retrieve data from preference: SharedPreferences prefs = getSharedPreferences(MY_PREFS_NAME, MODE_PRIVATE); String name = prefs.getString(“name”, “No name defined”);//”No name defined” is the default value. int idName = prefs.getInt(“idName”, … Read more
To remove specific values: SharedPreferences.Editor.remove() followed by a commit() To remove them all SharedPreferences.Editor.clear() followed by a commit() If you don’t care about the return value and you’re using this from your application’s main thread, consider using apply() instead.
The Device File Explorer that is part of Android Studio 3.x is really good for exploring your preference file(s), cache items or database. Shared Preferences /data/data//shared_prefs directory It looks something like this To open The Device File Explorer: Click View > Tool Windows > Device File Explorer or click the Device File Explorer button in … Read more
SharedPreferences are stored in an xml file in the app data folder, i.e. /data/data/YOUR_PACKAGE_NAME/shared_prefs/YOUR_PREFS_NAME.xml or the default preferences at: /data/data/YOUR_PACKAGE_NAME/shared_prefs/YOUR_PACKAGE_NAME_preferences.xml SharedPreferences added during runtime are not stored in the Eclipse project. Note: Accessing /data/data/<package_name> requires superuser privileges
It really depends on the data you want to store. SQLite Large amounts of same structured data should be stored in a SQLite database as databases are designed for this kind of data. As the data is structured and managed by the database, it can be queried to get a sub set of the data … Read more