Android Preferences

Android Preferences

Dependencies.md

dependencies {
    compile 'com.google.code.gson:gson:2.2.4'
}

PreferencesManager.java

public class PreferencesManager {

    private Context mContext;

    private static final String PREF_NAME = "pref.mykatch";
    private static final String USER = "user";

    public PreferencesManager(Context context) {
        mContext = context;
    }

    public SharedPreferences preferences() {
        return mContext.getSharedPreferences(PREF_NAME, Context.MODE_PRIVATE);
    }

    public void clear() {
        preferences().edit().clear().commit();
    }


    @Nullable
    public User getUser() {
        String userJsonString = preferences().getString(USER, null);

        User user = null;
        if (userJsonString != null) {
            user = User.fromJson(userJsonString);
        }
        return user;
    }


    public void setUser(@NotNull User user) {
        preferences().edit().putString(USER, user.toJson()).commit();
    }

}

User.java

public class User {

    @SerializedName("id")
    private long id;

    @SerializedName("access_token")
    private String accessToken;

    @SerializedName("avatar")
    private String avatar;

    @SerializedName("name")
    private String name;

    @SerializedName("bio")
    private String bio;
    
    @NotNull
    public static User fromJson(@NotNull String json) {
        Gson gson = new Gson();
        return gson.fromJson(json, User.class);
    }

    @NotNull
    public static User fromJson(@NotNull JSONObject json) {
        return fromJson(json.toString());
    }

    @NotNull
    public String toJson() {
        Gson gson = new Gson();
        return gson.toJson(this);
    }
    
}