Java tutorial
/* * Copyright (C) 2015 Willi Ye * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.grarak.kerneladiutor.utils.database; import android.content.Context; import org.json.JSONException; import org.json.JSONObject; import java.util.ArrayList; import java.util.List; /** * Created by willi on 15.04.15. */ public class PerAppDB extends JsonDB { public PerAppDB(Context context) { super(context.getFilesDir() + "/per_app.json", 1); } @Override public DBJsonItem getItem(JSONObject item) { return new PerAppItem(item); } public boolean containsApp(String app) { List<PerAppItem> profiles = getAllApps(); for (PerAppItem profile : profiles) { if (profile.getApp().equals(app)) { return true; } } return false; } public ArrayList<String> get_info(String app) { List<PerAppItem> profiles = getAllApps(); ArrayList<String> list = new ArrayList<String>(); for (PerAppItem profile : profiles) { if (profile.getApp().equals(app)) { list.add(0, profile.getApp()); list.add(1, profile.getID()); return (list); } } return null; } public void putApp(String app, String id) { try { JSONObject items = new JSONObject(); items.put("name", app); items.put("id", id); putItem(items); } catch (JSONException e) { e.printStackTrace(); } } public void delApp(int index) { delete(index); } public List<PerAppItem> getAllApps() { List<PerAppItem> items = new ArrayList<>(); for (DBJsonItem jsonItem : getAllItems()) items.add((PerAppItem) jsonItem); return items; } public static class PerAppItem extends DBJsonItem { public PerAppItem(JSONObject object) { item = object; } public String getApp() { return getString("name"); } public String getID() { return getString("id"); } private String getString(String name) { try { return getItem().getString(name); } catch (JSONException e) { e.printStackTrace(); return null; } } } }