minhtuannb287 / savedata

Android examples for saving data, sqlite, file system, and Preferences

Save data Examples

eclipse/ has the example in the eclipse format (no longer updated). otherwise all examples are using Android Studio.

legacy/ these are examples that are no longer updated. May still be useful, since they deal with android 2.3.3

PerferenceDemo uses the preference fragments to save user preference data. Note, there are no support libraries used for fragment or preferences. Also, this is for API 16+, for older versions, see the legacy directory example.

SupportPerferenceDemo uses the androidx.prefernces. It's similar to perferencedemo, using similar preferences and using live updates as well.

saveDataDemo shows an example of using the instance bundle and the shared preference system to store data.

ContentProDemo shows how to create a simple context provider and how to access it Also has an example of accessing the contacts provider.

fileSystemDemo shows how to read/write to local private and public directory. The external has been removed, since it won't work in API 30 (see legacy). A new example will be needed for the sdcard, when I can find documentation that actually works (I looking at you google/android, poor documentation).

sqliteDBDemo an SupportSQLiteDatabase is created and used. The data is displayed via a recyclerview. While the code has insert, update, delete, and query. Only the query and insert methods are called by this example.

sqliteDemo creates a supportSQLitedatabase and content provider

sqliteDemo2 uses the content provider from sqlitedemo, also shows how to use a loader.

sqliteDemo3 uses the content provider from sqlitedemo and recyclerview. Uses a custom cursoradapter for it and a loader as well.

sqliteDemo4 uses the content provider from sqlitedemo and recyclerview. Uses a custom LiveData, plus a modelview to replace the deprecated Loaders.

lvCursorDemo show how to use cursoradapters with listview and explistview.

These are example code for University of Wyoming, Cosc 4730 Mobile Programming course. All examples are for Android.