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Code Issues Pull Requests Releases Wiki Activity

implement basic downloading of stuff for offline mode switch

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This commit is contained in:
Andrew Dolgov 2011-12-05 18:05:11 +03:00
parent c9ce8b60a3
commit a98780bc62
5 changed files with 152 additions and 30 deletions
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res/drawable-hdpi/ic_menu_clock.png Normal file
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res/drawable-hdpi/ic_menu_cloud.png Normal file
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19
res/menu/main_menu.xml
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@ -1,5 +1,18 @@
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
<item
android:id="@+id/go_offline"
android:icon="@drawable/ic_menu_cloud"
android:showAsAction="ifRoom|withText"
android:title="@string/go_offline"/>
<item
android:id="@+id/go_online"
android:visible="false"
android:icon="@drawable/ic_menu_cloud"
android:showAsAction="ifRoom|withText"
android:title="@string/go_online"/>
<group android:id="@+id/menu_group_logged_in" >
<group android:id="@+id/menu_group_feeds" >
@ -22,12 +35,6 @@
android:showAsAction=""
android:title="@string/update_feeds"/>
<item
android:id="@+id/initiate_sync"
android:icon="@android:drawable/ic_menu_rotate"
android:showAsAction="ifRoom|withText"
android:title="@string/initiate_sync"/>
<item
android:id="@+id/logout"
android:icon="@drawable/ic_menu_exit"

5
res/values/strings.xml
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@ -90,5 +90,8 @@
<string name="error_invalid_api_url">Error: invalid API URL</string>
<string name="combined_mode_summary">Displays full article text inline, instead of a separate panel</string>
<string name="combined_mode">Combined mode</string>
<string name="initiate_sync">Sync offline</string>
<string name="go_offline">Go offline</string>
<string name="go_online">Go online</string>
<string name="offline_downloading">Preparing offline mode...</string>
<string name="offline_switch_error">Failed to prepare offline mode (see log)</string>
</resources>

158
src/org/fox/ttrss/MainActivity.java
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@ -406,13 +406,42 @@ public class MainActivity extends FragmentActivity implements FeedsFragment.OnFe
public synchronized SQLiteDatabase getWritableDb() {
return m_writableDb;
}
//private boolean m_canGetMoreArticles = true;
private int m_articleOffset = 0;
@SuppressWarnings("unchecked")
public void offlineGetArticles() {
Log.d(TAG, "offline: downloading articles... offset=" + m_articleOffset);
OfflineArticlesRequest req = new OfflineArticlesRequest(this);
HashMap<String,String> map = new HashMap<String,String>() {
{
put("op", "getHeadlines");
put("sid", m_sessionId);
put("feed_id", "-4");
put("view_mode", "unread");
put("show_content", "true");
put("skip", String.valueOf(m_articleOffset));
put("limit", "30");
}
};
req.execute(map);
}
@SuppressWarnings("unchecked")
public void offlineSync() {
Log.d(TAG, "Starting offlineSync");
public void switchOffline() {
Log.d(TAG, "offline: starting");
if (m_sessionId != null) {
findViewById(R.id.loading_container).setVisibility(View.VISIBLE);
findViewById(R.id.main).setVisibility(View.INVISIBLE);
setLoadingStatus(R.string.offline_downloading, true);
// TODO upload updated stuff here
// Download feeds
@ -424,29 +453,38 @@ public class MainActivity extends FragmentActivity implements FeedsFragment.OnFe
protected void onPostExecute(JsonElement content) {
if (content != null) {
Type listType = new TypeToken<List<Feed>>() {}.getType();
List<Feed> feeds = new Gson().fromJson(content, listType);
try {
Type listType = new TypeToken<List<Feed>>() {}.getType();
List<Feed> feeds = new Gson().fromJson(content, listType);
SQLiteStatement stmtInsert = getWritableDb().compileStatement("INSERT INTO feeds " +
"("+BaseColumns._ID+", title, feed_url, has_icon, cat_id) " +
"VALUES (?, ?, ?, ?, ?);");
for (Feed feed : feeds) {
stmtInsert.bindLong(1, feed.id);
stmtInsert.bindString(2, feed.title);
stmtInsert.bindString(3, feed.feed_url);
stmtInsert.bindLong(4, feed.has_icon ? 1 : 0);
stmtInsert.bindLong(5, feed.cat_id);
stmtInsert.execute();
}
SQLiteStatement stmtInsert = getWritableDb().compileStatement("INSERT INTO feeds " +
"("+BaseColumns._ID+", title, feed_url, has_icon, cat_id) " +
"VALUES (?, ?, ?, ?, ?);");
for (Feed feed : feeds) {
stmtInsert.bindLong(1, feed.id);
stmtInsert.bindString(2, feed.title);
stmtInsert.bindString(3, feed.feed_url);
stmtInsert.bindLong(4, feed.has_icon ? 1 : 0);
stmtInsert.bindLong(5, feed.cat_id);
stmtInsert.execute();
Log.d(TAG, "offline: done downloading feeds");
m_articleOffset = 0;
getWritableDb().execSQL("DELETE FROM articles;");
offlineGetArticles();
} catch (Exception e) {
e.printStackTrace();
setLoadingStatus(R.string.offline_switch_error, false);
}
Log.d(TAG, "offlineSync: done downloading feeds");
// TODO download fresh articles
} else {
Log.d(TAG, "offlineSync failed: " + getErrorMessage());
setLoadingStatus(getErrorMessage(), false);
// TODO error, could not download feeds, properly report API error (toast)
}
}
@ -638,8 +676,8 @@ public class MainActivity extends FragmentActivity implements FeedsFragment.OnFe
case R.id.login:
login();
return true;
case R.id.initiate_sync:
offlineSync();
case R.id.go_offline:
switchOffline();
return true;
case R.id.close_article:
closeArticle();
@ -1449,4 +1487,78 @@ public class MainActivity extends FragmentActivity implements FeedsFragment.OnFe
viewCategory(cat, browse && cat.id >= 0);
}
public class OfflineArticlesRequest extends ApiRequest {
public OfflineArticlesRequest(Context context) {
super(context);
}
@Override
protected void onPostExecute(JsonElement content) {
if (content != null) {
try {
Type listType = new TypeToken<List<Article>>() {}.getType();
List<Article> articles = new Gson().fromJson(content, listType);
SQLiteStatement stmtInsert = getWritableDb().compileStatement("INSERT INTO articles " +
"("+BaseColumns._ID+", unread, marked, published, updated, is_updated, title, link, feed_id, tags, content) " +
"VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?);");
for (Article article : articles) {
String tagsString = "";
for (String t : article.tags) {
tagsString += t + ", ";
}
tagsString.replaceAll("/, $/", "");
stmtInsert.bindLong(1, article.id);
stmtInsert.bindLong(2, article.unread ? 1 : 0);
stmtInsert.bindLong(3, article.marked ? 1 : 0);
stmtInsert.bindLong(4, article.published ? 1 : 0);
stmtInsert.bindLong(5, article.updated);
stmtInsert.bindLong(6, article.is_updated ? 1 : 0);
stmtInsert.bindString(7, article.title);
stmtInsert.bindString(8, article.link);
stmtInsert.bindLong(9, article.feed_id);
stmtInsert.bindString(10, tagsString); // comma-separated tags
stmtInsert.bindString(11, article.content);
try {
stmtInsert.execute();
} catch (Exception e) {
e.printStackTrace();
}
}
//m_canGetMoreArticles = articles.size() == 30;
m_articleOffset += articles.size();
Log.d(TAG, "offline: received " + articles.size() + " articles");
if (articles.size() == 30 && m_articleOffset < 500) {
offlineGetArticles();
} else {
logout();
setLoadingStatus(R.string.blank, false);
}
return;
} catch (Exception e) {
setLoadingStatus(R.string.offline_switch_error, false);
Log.d(TAG, "offline: failed: exception when loading articles");
e.printStackTrace();
}
} else {
Log.d(TAG, "offline: failed: " + getErrorMessage());
setLoadingStatus(getErrorMessage(), false);
}
}
}
}