diff options
| author | Andrew Dolgov <fox@madoka.volgo-balt.ru> | 2012-09-17 13:27:27 +0400 |
|---|---|---|
| committer | Andrew Dolgov <fox@madoka.volgo-balt.ru> | 2012-09-17 13:27:27 +0400 |
| commit | 219531f1384f18ac04c6a61a940329580d02863e (patch) | |
| tree | f0e18d0ee2a73fa4a8bddcd11ba282e9dec054f8 /src/org/fox/ttrss/util/HeadlinesRequest.java | |
| parent | 4f8cc7aeebe6794319b9fc8a63406ed6a38d9747 (diff) | |
implement background loading in ArticlePager
various loading and state related fixes
Diffstat (limited to 'src/org/fox/ttrss/util/HeadlinesRequest.java')
| -rw-r--r-- | src/org/fox/ttrss/util/HeadlinesRequest.java | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/src/org/fox/ttrss/util/HeadlinesRequest.java b/src/org/fox/ttrss/util/HeadlinesRequest.java new file mode 100644 index 00000000..49b8ec7c --- /dev/null +++ b/src/org/fox/ttrss/util/HeadlinesRequest.java @@ -0,0 +1,85 @@ +package org.fox.ttrss.util;
+
+import java.lang.reflect.Type;
+import java.util.List;
+
+import org.fox.ttrss.ApiRequest;
+import org.fox.ttrss.OnlineActivity;
+import org.fox.ttrss.R;
+import org.fox.ttrss.TinyApplication;
+import org.fox.ttrss.ApiRequest.ApiError;
+import org.fox.ttrss.types.Article;
+import org.fox.ttrss.types.ArticleList;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
+import com.google.gson.reflect.TypeToken;
+
+import android.content.Context;
+import android.widget.Adapter;
+import android.widget.ArrayAdapter;
+
+public class HeadlinesRequest extends ApiRequest {
+ public static final int HEADLINES_REQUEST_SIZE = 30;
+ public static final int HEADLINES_BUFFER_MAX = 500;
+
+ private int m_offset = 0;
+ private OnlineActivity m_activity;
+ private ArticleList m_articles = TinyApplication.getInstance().m_loadedArticles;
+
+ public HeadlinesRequest(Context context, OnlineActivity activity) {
+ super(context);
+
+ m_activity = activity;
+ }
+
+ protected void onPostExecute(JsonElement result) {
+ if (result != null) {
+ try {
+ JsonArray content = result.getAsJsonArray();
+ if (content != null) {
+ Type listType = new TypeToken<List<Article>>() {}.getType();
+ final List<Article> articles = new Gson().fromJson(content, listType);
+
+ while (m_articles.size() > HEADLINES_BUFFER_MAX)
+ m_articles.remove(0);
+
+ if (m_offset == 0)
+ m_articles.clear();
+ else
+ if (m_articles.get(m_articles.size()-1).id == -1)
+ m_articles.remove(m_articles.size()-1); // remove previous placeholder
+
+ for (Article f : articles)
+ m_articles.add(f);
+
+ if (articles.size() == HEADLINES_REQUEST_SIZE) {
+ Article placeholder = new Article(-1);
+ m_articles.add(placeholder);
+ }
+
+ if (m_articles.size() == 0)
+ m_activity.setLoadingStatus(R.string.no_headlines_to_display, false);
+ else
+ m_activity.setLoadingStatus(R.string.blank, false);
+
+ return;
+ }
+
+ } catch (Exception e) {
+ e.printStackTrace();
+ }
+ }
+
+ if (m_lastError == ApiError.LOGIN_FAILED) {
+ m_activity.login();
+ } else {
+ m_activity.setLoadingStatus(getErrorMessage(), false);
+ }
+ }
+
+ public void setOffset(int skip) {
+ m_offset = skip;
+ }
+}
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