nilsnh/uib-events
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Optimized data fetching and storing behavior.

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This commit is contained in:
Nils Norman Haukås 2015-04-21 22:39:57 +02:00
parent 7b8a96521d
commit baed05fd8f
3 changed files with 19 additions and 30 deletions
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4
app/src/main/java/no/nilsnh/uibevents/MainActivity.java
View file

@ -44,14 +44,14 @@ public class MainActivity extends ActionBarActivity implements EventFragment.Cal
.findFragmentById(R.id.event_fragment));
UibEventsSyncAdapter.initializeSyncAdapter(this);
UibEventsSyncAdapter.syncImmediately(this);
// UibEventsSyncAdapter.syncImmediately(this); //Uncomment for immediate data sync.
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
// getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}

42
app/src/main/java/no/nilsnh/uibevents/data/EventDbHelper.java
View file

@ -99,12 +99,12 @@ public class EventDbHelper {
}
}
}
return eventJsonStr.replace(";", "-");
return eventJsonStr;
}
public static ArrayList<Event> parseJsonEvents(String data) {
ArrayList<Event> parsedEvents = new ArrayList<>();
JSONArray events = null;
JSONArray events;
try {
events = new JSONObject(data).getJSONArray("events");
for (int i = 0; i < events.length(); i++) {
@ -119,20 +119,19 @@ public class EventDbHelper {
public void saveFile(String data) {
try {
File file = new File(ctx.getFilesDir() + "/" + filename);
File file = new File(ctx.getFilesDir(), filename);
if (file.exists()) file.delete(); //TODO Only delete events older than X date.
file.createNewFile();
FileOutputStream outStream = new FileOutputStream(file);
FileChannel channel = outStream.getChannel();
FileLock lock = channel.lock();
FileOutputStream outputStream = new FileOutputStream(file);
outStream.write(data.getBytes());
outStream.flush();
try {
outputStream.write(data.getBytes());
outputStream.close();
} catch (Exception e) {
e.printStackTrace();
}
lock.release();
outStream.close();
} catch (IOException e) {
e.printStackTrace();
} finally {
@ -149,35 +148,26 @@ public class EventDbHelper {
}
public ArrayList<Event> getStoredData() {
File file = new File(ctx.getFilesDir() + "/" + filename);
File file = new File(ctx.getFilesDir(), filename);
if(file.exists()){
HashSet<String> eventStrings = new HashSet<>();
// HashSet<String> eventStrings = new HashSet<>();
StringBuilder sb = new StringBuilder();
try {
BufferedReader br = new BufferedReader(new FileReader(file));
String line;
while ((line = br.readLine()) != null) {
if(!line.isEmpty()) eventStrings.add(line);
if(!line.isEmpty()) sb.append(line);
}
}
catch (IOException e) {
e.printStackTrace();
}
ArrayList<Event> events = new ArrayList<>();
Event event;
//Here we try to instatiate all the events from the event strings.
//and we throw away anyone that does not work.
for (String eventString: eventStrings) {
try {
event = new Event(eventString);
events.add(event);
} catch (ArrayIndexOutOfBoundsException e) {
Log.d(LOG_TAG, "Could not create event from malformed data");
}
}
ArrayList<Event> events = parseJsonEvents(sb.toString());
Log.d(LOG_TAG, "Finished reading stored data");
return events;
}
else {
Log.d(LOG_TAG, "Was not able to find file");

3
app/src/main/java/no/nilsnh/uibevents/sync/UibEventsSyncAdapter.java
View file

@ -33,8 +33,7 @@ public class UibEventsSyncAdapter extends AbstractThreadedSyncAdapter {
public void onPerformSync(Account account, Bundle extras, String authority, ContentProviderClient provider, SyncResult syncResult) {
Log.d(LOG_TAG, "Starting sync");
EventDbHelper db = new EventDbHelper(getContext());
ArrayList<Event> events = db.parseJsonEvents(db.fetchWebEventData());
db.saveFile(events);
db.saveFile(db.fetchWebEventData());
}
public static void initializeSyncAdapter(Context context) {