PrefCompat is a wrapper over the SharedPreference class in Android. It supports storing objects other than the standard primitives while decreasing the boiler plate code. It also enables listening for changes on specific keys on a SharedPreference with RxJava support.
Add the following line to the gradle dependencies for your module.
compile 'com.tramsun.libs:prefcompat:0.9.4'First initialize the PrefCompat library in your Application class.
public class Application extends android.app.Application {
@Override
public void onCreate() {
super.onCreate();
Pref.init(this);
}
}Then, use the Pref class to store and access data in SharedPreferences.
public class MainActivity extends Activity {
@Override public void onCreate(Bundle inState) {
// Default SharedPreferences
Pref.putString("name", "Tushar");
Pref.putDouble("weight", 79.24);
Pref.putObject("dependents", new Dependent("Radhika", 62.24));
Double weight = Pref.getDouble("weight");
Dependent mom = Pref.getObject("dependents", Dependent.class);
// Named SharedPreferences can also be used
Pref.from("Scores").putIntList("level_1", [60, 20, 80, 25, 30]);
List<Integer> scores = Pref.from("Scores").getIntList("level_1");
}
}Listen on changes to specific key in a SharedPreference
// Listen on a key in default SharedPreferences
Pref.listenOn("age").subscribe(new Action1<String>() {
@Override
public void call(String key) {
Log.d(TAG, "1. Value of " + key + " changed to " + Pref.getInt(key));
}
});
// Listen on a key in named SharedPreferences
Pref.from("scores").listenOn("user1").subscribe(new Action1<String>() {
@Override
public void call(String key) {
Log.d(TAG, "2. Scores of " + key + " changed to " + Pref.from(SP_SCORES).getDoubleList(key).toString());
}
});Do note that these subscriptions are standard RxJava subscriptions, hence they need to be unsubscribed, failing which will lead to leaking of subscriptions
Copyright 2015 - 2016 Tushar Acharya
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