我有一个屏幕应用程序。用户在编辑视图中放置一些数据，并根据该uri构建器创建URI。但是我不知道如何在点击按钮搜索后自动更新uri。
现在它正在从编辑文本中保存字符串，但我不知道如何在uri构建器中保存它，然后创建一个新查询来更新列表。
我已经记录了程序工作的每一步。在那里
09-15 06:17:07.025 28944-28944/eu.laramartin.newsfeed V/MyLogs: === MAIN ACTIVITY /// onCreate START ===
09-15 06:17:07.029 28944-28944/eu.laramartin.newsfeed V/MyLogs: === MAIN ACTIVITY /// OnCreate /// New object Adapter ===
09-15 06:17:07.030 28944-28944/eu.laramartin.newsfeed V/MyLogs: === MAIN ACTIVITY /// OnCreate /// List Atached with adapter ===
09-15 06:17:07.038 28944-28944/eu.laramartin.newsfeed V/MyLogs: === MAIN ACTIVITY /// OnCreateLoader start ===
09-15 06:17:07.045 28944-28944/eu.laramartin.newsfeed V/MyLogs: === MAIN ACTIVITY /// OnCreate /// getSupportLoaderManager done ===
09-15 06:17:07.055 28944-28944/eu.laramartin.newsfeed V/MyLogs: === NEWS LOADER /// onStartLoading DONE ===
09-15 06:17:07.055 28944-29030/eu.laramartin.newsfeed V/MyLogs: === NEWS LOADER /// loadInBackground START===
09-15 06:17:07.063 28944-29030/eu.laramartin.newsfeed V/MyLogs: === QUERY UTILS /// createUrl DONE ===
09-15 06:17:07.063 28944-29030/eu.laramartin.newsfeed V/MyLogs: === QUERY UTILS /// createStringUrl ===
09-15 06:17:07.064 28944-29030/eu.laramartin.newsfeed V/MyLogs: === QUERY UTILS /// createStringUrl /// MAKING URI===https://content.guardianapis.com/search?show-tags=null&q=null&api-key=test
09-15 06:17:07.064 28944-29030/eu.laramartin.newsfeed V/MyLogs: === QUERY UTILS /// makeHttpRequest START ===
09-15 06:17:07.922 28944-29030/eu.laramartin.newsfeed V/MyLogs: === QUERY UTILS /// readFromStream START ===
09-15 06:17:07.931 28944-29030/eu.laramartin.newsfeed V/MyLogs: === QUERY UTILS /// readFromStream FINISHED ==={"response":{"status":"ok","userTier":"developer","total":1014,"startIndex":1,"pageSize":10,"currentPage":1,"pages":102,"orderBy":"relevance","results":[{"id":"football/2017/jul/29/naby-keita-100-per-cent-stay-at-rb-leipzig-says-coach-liverpool","type":"article","sectionId":"football","sectionName":"Football","webPublicationDate":"2017-07-29T16:30:19Z","webTitle":"Naby Keïta will ‘100%’ stay at RB Leipzig, coach tells Liverpool","webUrl":"https://www.theguardian.com/football/2017/jul/29/naby-keita-100-per-cent-stay-at-rb-leipzig-says-coach-liverpool","apiUrl":"https://content.guardianapis.com/football/2017/jul/29/naby-keita-100-per-cent-stay-at-rb-leipzig-says-coach-liverpool","tags":[],"isHosted":false},{"id":"global-development/2017/aug/21/no-gay-promotion-can-be-allowed-uganda-cancels-pride-events-lgbt","type":"article","sectionId":"global-development","sectionName":"Global development","webPublicationDate":"2017-08-21T12:09:20Z","webTitle":"'No gay promotion can be allowed': Uganda cancels pride events","webUrl":"https://www.theguardian.com/global-development/2017/aug/21/no-gay-promotion-can-be-allowed-uganda-cancels-pride-events-lgbt","apiUrl":"https://content.guardianapis.com/global-development/2017/aug/21/no-gay-promotion-can-be-allowed-uganda-cancels-pride-events-lgbt","tags":[],"isHosted":false},{"id":"media/greenslade/2015/dec/18/nctj-declares-training-centres-shorthand-exams-null-and-void","type":"article","sectionId":"media","sectionName":"Media","webPublicationDate":"2015-12-18T11:18:21Z","webTitle":"NCTJ declares training centre's shorthand exams 'null and void'","webUrl":"https://www.theguardian.com/media/greenslade/2015/dec/18/nctj-declares-training-centres-shorthand-exams-null-and-void","apiUrl":"https://content.guardianapis.com/media/greenslade/2015/dec/18/nctj-declares-training-centres-shorthand-exams-null-and-void","tags":[],"isHosted":false},{"id":"travel/shortcuts/2016/jul/31/the-swiss-hotel-thats-just-a-bed-on-a-mountain","type":"article","sectionId":"travel","sectionName":"Travel","webPublicationDate":"2016-07-31T16:33:07Z","webTitle":"The Swiss hotel that’s just a bed on a mountain","webUrl":"https://www.theguardian.com/travel/shortcuts/2016/jul/31/the-swiss-hotel-thats-just-a-bed-on-a-mountain","apiUrl":"https://content.guardianapis.com/travel/shortcuts/2016/jul/31/the-swiss-hotel-thats-just-a-bed-on-a-mountain","tags":[],"isHosted":false},{"id":"us-news/2017/mar/24/nepotism-data-ivanka-trump","type":"article","sectionId":"us-news","sectionName":"US news","webPublicationDate":"2017-03-24T11:00:31Z","webTitle":"Measuring nepotism: is it more prevalent in the US than in other countries?","webUrl":"https://www.theguardian.com/us-news/2017/mar/24/nepotism-data-ivanka-trump","apiUrl":"https://content.guardianapis.com/us-news/2017/mar/24/nepotism-data-ivanka-trump","tags":[],"isHosted":false},{"id":"small-business-network/2017/mar/18/letter-to-my-younger-self-student-beans-causr-james-eder","type":"article","sectionId":"small-business-network","sectionName":"Guardian Small Business Network","webPublicationDate":"2017-03-18T09:00:34Z","webTitle":"Letter to my younger self: what would you do if you couldn't fail?","webUrl":"https://www.theguardian.com/small-business-network/2017/mar/18/letter-to-my-younger-self-student-beans-causr-james-eder","apiUrl":"https://content.guardianapis.com/small-business-network/2017/mar/18/letter-to-my-younger-self-student-beans-causr-james-eder","tags":[],"isHosted":false},{"id":"public-leaders-network/2017/jan/13/the-2017-public-leaders-editorial-advisory-board","type":"article","sectionId":"public-leaders-network","sectionName":"Public Leaders Network","webPublicationDate":"2017-01-13T10:23:00Z","webTitle":"The 2017 Public Leaders editorial advisory board","webUrl":"https://www.theguardian.com/public-leaders-network/2017/jan/13/the-2017-public-leaders-editorial-advisory-board","apiUrl":"https://content.guardianapis.com/public-leaders-network/2017/jan/13/the-2017-public-leaders-edi
09-15 06:17:07.931 28944-29030/eu.laramartin.newsfeed V/MyLogs: === QUERY UTILS /// makeHttpRequest START ===
09-15 06:17:07.931 28944-29030/eu.laramartin.newsfeed V/MyLogs: === QUERY UTILS /// parseJson START===
09-15 06:17:07.947 28944-29030/eu.laramartin.newsfeed V/MyLogs: === QUERY UTILS /// formatDate DONE ===
09-15 06:17:07.959 28944-29030/eu.laramartin.newsfeed V/MyLogs: === QUERY UTILS /// formatDate DONE ===
09-15 06:17:07.967 28944-29030/eu.laramartin.newsfeed V/MyLogs: === QUERY UTILS /// formatDate DONE ===
09-15 06:17:07.975 28944-29030/eu.laramartin.newsfeed V/MyLogs: === QUERY UTILS /// formatDate DONE ===
09-15 06:17:07.982 28944-29030/eu.laramartin.newsfeed V/MyLogs: === QUERY UTILS /// formatDate DONE ===
09-15 06:17:07.992 28944-29030/eu.laramartin.newsfeed V/MyLogs: === QUERY UTILS /// formatDate DONE ===
09-15 06:17:08.000 28944-29030/eu.laramartin.newsfeed V/MyLogs: === QUERY UTILS /// formatDate DONE ===
09-15 06:17:08.004 28944-29030/eu.laramartin.newsfeed V/MyLogs: === QUERY UTILS /// formatDate DONE ===
09-15 06:17:08.009 28944-29030/eu.laramartin.newsfeed V/MyLogs: === QUERY UTILS /// formatDate DONE ===
09-15 06:17:08.014 28944-29030/eu.laramartin.newsfeed V/MyLogs: === QUERY UTILS /// formatDate DONE ===
09-15 06:17:08.021 28944-29030/eu.laramartin.newsfeed V/MyLogs: === QUERY UTILS /// parseJson FINISHED===
09-15 06:17:08.022 28944-29030/eu.laramartin.newsfeed V/MyLogs: === NEWS LOADER /// loadInBackground FINISHED===
09-15 06:17:08.180 28944-28944/eu.laramartin.newsfeed V/MyLogs: === MAIN ACTIVITY /// onLoadFinished START ===
09-15 06:17:08.181 28944-28944/eu.laramartin.newsfeed V/MyLogs: === MAIN ACTIVITY /// onLoadFinished FINISHED ===
09-15 06:17:08.209 28944-28944/eu.laramartin.newsfeed V/MyLogs: === NEWS ADAPTER START===
09-15 06:17:08.232 28944-28944/eu.laramartin.newsfeed V/MyLogs: === NEWS ADAPTER FINISHED===
09-15 06:17:08.264 28944-28944/eu.laramartin.newsfeed V/MyLogs: === NEWS ADAPTER START===
09-15 06:17:08.309 28944-28944/eu.laramartin.newsfeed V/MyLogs: === NEWS ADAPTER FINISHED===
09-15 06:17:08.315 28944-28944/eu.laramartin.newsfeed V/MyLogs: === NEWS ADAPTER START===
09-15 06:17:08.330 28944-28944/eu.laramartin.newsfeed V/MyLogs: === NEWS ADAPTER FINISHED===
09-15 06:17:08.343 28944-28944/eu.laramartin.newsfeed V/MyLogs: === NEWS ADAPTER START===
09-15 06:17:08.457 28944-28944/eu.laramartin.newsfeed V/MyLogs: === NEWS ADAPTER FINISHED===
Mainactivity
public class MainActivity
extends AppCompatActivity
implements LoaderManager.LoaderCallbacks<List<News>>, SwipeRefreshLayout.OnRefreshListener {
//Пишем Лог
final public static String TAG = "MyLogs";
// Переменная объекта адаптера
private NewsAdapter adapter;
//Константа загрузки
private static int LOADER_ID = 0;
//ХЗ
SwipeRefreshLayout swipe;
EditText editSearch;
Button buttonSearch;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
editSearch = (EditText) findViewById(R.id.edit_search);
buttonSearch = (Button) findViewById(R.id.button_search);
final News news = new News(null, null, null, null,null,null);
buttonSearch.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String m = editSearch.getText().toString();
news.searchText = m;
Log.v(TAG, "--- Сохраненные данные --- " + news.searchText);
}
});
//Какой то лейаут Swipe
swipe = (SwipeRefreshLayout) findViewById(R.id.swiperefresh);
swipe.setOnRefreshListener(this);
swipe.setColorSchemeColors(getResources().getColor(R.color.colorAccent));
// Инициализируем листвью
ListView listView = (ListView) findViewById(R.id.list_view);
// Инициализируем адаптер, передаем в него контекст
adapter = new NewsAdapter(this);
// На лист вешаем текущий адаптер
listView.setAdapter(adapter);
// Листенер на айтем
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
// ХЗ откуда объект ews
News news = adapter.getItem(i);
Log.v(TAG, "--- Оьъект news содержит ---" + news.toString());
// ХЗ
String url = news.url;
Log.v(TAG, "--- Оьъект url содержит ---" + url.toString());
//Создаем интент
Intent intent = new Intent(Intent.ACTION_VIEW);
// В интент передаем данные из урла
intent.setData(Uri.parse(url));
Log.v(TAG, "--- Оьъект Intent содержит ---" + intent.toString());
startActivity(intent);
}
});
//ХЗ
getSupportLoaderManager().initLoader(LOADER_ID, null, this);
}
//Создаем загрузчик
@Override
public Loader<List<News>> onCreateLoader(int id, Bundle args) {
return new NewsLoader(this);
}
//Метод после того как загрузка завершена
// ХЗ
@Override
public void onLoadFinished(Loader<List<News>> loader, List<News> data) {
swipe.setRefreshing(false);
if (data != null) {
adapter.setNotifyOnChange(false);
adapter.clear();
adapter.setNotifyOnChange(true);
adapter.addAll(data);
}
}
@Override
public void onLoaderReset(Loader<List<News>> loader) {
}
@Override
public void onRefresh() {
getSupportLoaderManager().restartLoader(LOADER_ID, null, this);
}
}
网络连接器
public class QueryUtils {
static String createStringUrl() {
//Создаем
Uri.Builder builder = new Uri.Builder();
News newsQuery = new News(null, null, null, null, null, null);
//Формирование УРЛ запроса
builder.scheme("https")
.encodedAuthority("content.guardianapis.com")
.appendPath("search")
// .appendQueryParameter("order-by", "newest")
// .appendQueryParameter("show-references", "author")
.appendQueryParameter("show-tags", null)
.appendQueryParameter("q", newsQuery.getSearchText())
.appendQueryParameter("api-key", "test");
// Полученный урл делаем в строку
String url = builder.build().toString();
Log.v(TAG, "---URI IS 111--- " + url.toString());
return url;
}
static URL createUrl() {
String stringUrl = createStringUrl();
try {
return new URL(stringUrl);
} catch (MalformedURLException e) {
Log.e("Queryutils", "Error creating URL: ", e);
return null;
}
}
private static String formatDate(String rawDate) {
String jsonDatePattern = "yyyy-MM-dd'T'HH:mm:ss'Z'";
SimpleDateFormat jsonFormatter = new SimpleDateFormat(jsonDatePattern, Locale.US);
try {
Date parsedJsonDate = jsonFormatter.parse(rawDate);
String finalDatePattern = "MMM d, yyy";
SimpleDateFormat finalDateFormatter = new SimpleDateFormat(finalDatePattern, Locale.US);
return finalDateFormatter.format(parsedJsonDate);
} catch (ParseException e) {
Log.e("QueryUtils", "Error parsing JSON date: ", e);
return "";
}
}
static String makeHttpRequest(URL url) throws IOException {
String jsonResponse = "";
if (url == null){
return jsonResponse;
}
HttpURLConnection urlConnection = null;
InputStream inputStream = null;
try {
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("GET");
urlConnection.setReadTimeout(10000 /* milliseconds */);
urlConnection.setConnectTimeout(15000 /* milliseconds */);
urlConnection.connect();
if (urlConnection.getResponseCode() == 200){
inputStream = urlConnection.getInputStream();
jsonResponse = readFromStream(inputStream);
} else {
Log.e("mainActivity", "Error response code: " + urlConnection.getResponseCode());
}
} catch (IOException e) {
Log.e("Queryutils", "Error making HTTP request: ", e);
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
if (inputStream != null) {
inputStream.close();
}
}
return jsonResponse;
}
private static String readFromStream(InputStream inputStream) throws IOException {
StringBuilder output = new StringBuilder();
if (inputStream != null) {
InputStreamReader inputStreamReader = new InputStreamReader(inputStream, Charset.forName("UTF-8"));
BufferedReader reader = new BufferedReader(inputStreamReader);
String line = reader.readLine();
while (line != null) {
output.append(line);
line = reader.readLine();
}
}
return output.toString();
}
static List<News> parseJson(String response) {
ArrayList<News> listOfNews = new ArrayList<>();
try {
JSONObject jsonResponse = new JSONObject(response);
JSONObject jsonResults = jsonResponse.getJSONObject("response");
JSONArray resultsArray = jsonResults.getJSONArray("results");
for (int i = 0; i < resultsArray.length(); i++) {
JSONObject oneResult = resultsArray.getJSONObject(i);
String webTitle = oneResult.getString("webTitle");
String url = oneResult.getString("webUrl");
String date = oneResult.getString("webPublicationDate");
date = formatDate(date);
String section = oneResult.getString("sectionName");
JSONArray tagsArray = oneResult.getJSONArray("tags");
String author = "";
if (tagsArray.length() == 0) {
author = null;
} else {
for (int j = 0; j < tagsArray.length(); j++) {
JSONObject firstObject = tagsArray.getJSONObject(j);
author += firstObject.getString("webTitle") + ". ";
}
}
listOfNews.add(new News(webTitle, author, url, date, section, null));
}
} catch (JSONException e) {
Log.e("Queryutils", "Error parsing JSON response", e);
}
return listOfNews;
}
}
装载机
public class NewsLoader extends AsyncTaskLoader<List<News>> {
public NewsLoader(Context context) {
super(context);
}
@Override
protected void onStartLoading() {
super.onStartLoading();
forceLoad();
}
@Override
public List<News> loadInBackground() {
//Создаем пустой список новостей
List<News> listOfNews = null;
try {
//Создаем УРЛ
URL url = QueryUtils.createUrl();
// Создаем запрос json
String jsonResponse = QueryUtils.makeHttpRequest(url);
// В лист парсим из json запроса
listOfNews = QueryUtils.parseJson(jsonResponse);
} catch (IOException e) {
Log.e("Queryutils", "Error Loader LoadInBackground: ", e);
}
return listOfNews;
}
}