Develop Reference

DIsplay files downloaded from json on main screen?

I'm parsing a json to display a list of files a user can tap to download. I want to display the files the users have chosen to download on my main screen. this is the code when they download a file.
public final class Main extends Activity {
// Log tag for this class
private static final String TAG = "Main";
// Callback code for request of storage permission
final private int PERMISSIONS_REQUEST_STORAGE = 735;
// JSON Node Names
private static final String TAG_TYPE = "plans";
private static final String TAG_NAME = "name";
private static final String TAG_FILENAME = "filename";
private static final String TAG_URL = "url";
private static final String TAG_SHOULD_NOT_CACHE = "shouldNotCache";
// Files to delete
private static final ArrayList<String> filesToGetDeleted = new ArrayList<>();
// Strings displayed to the user
private static String offline;
private static String noPDF;
private static String localLoc;
private static String jsonURL;
// PDF Download
private static DownloadManager downloadManager;
private static long downloadID;
private static File file;
#SuppressLint("StaticFieldLeak")
private static SwipeRefreshLayout swipeRefreshLayout;
private final BroadcastReceiver downloadReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context arg0, Intent arg1) {
final DownloadManager.Query query = new DownloadManager.Query();
query.setFilterById(downloadID);
final Cursor cursor = downloadManager.query(query);
if (cursor.moveToFirst()) {
final int columnIndex = cursor
.getColumnIndex(DownloadManager.COLUMN_STATUS);
final int status = cursor.getInt(columnIndex);
switch (status) {
case DownloadManager.STATUS_SUCCESSFUL:
final Uri path = Uri.fromFile(file);
final Intent pdfIntent = new Intent(Intent.ACTION_VIEW);
pdfIntent.setDataAndType(path, "application/pdf");
pdfIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
try {
startActivity(pdfIntent);
} catch (ActivityNotFoundException e) {
Utils.makeLongToast(Main.this, noPDF);
Log.e(TAG, e.getMessage());
}
break;
case DownloadManager.STATUS_FAILED:
Utils.makeLongToast(Main.this,
getString(R.string.down_error));
break;
case DownloadManager.STATUS_PAUSED:
Utils.makeLongToast(Main.this,
getString(R.string.down_paused));
break;
case DownloadManager.STATUS_PENDING:
Utils.makeLongToast(Main.this,
getString(R.string.down_pending));
break;
case DownloadManager.STATUS_RUNNING:
Utils.makeLongToast(Main.this,
getString(R.string.down_running));
break;
}
}
}
};
// Data from JSON file
private ArrayList<HashMap<String, String>> downloadList = new ArrayList<>();
private static void checkDir() {
final File dir = new File(Environment.getExternalStorageDirectory() + "/"
+ localLoc + "/");
if (!dir.exists()) dir.mkdir();
}
#Override
protected void onResume() {
super.onResume();
final IntentFilter intentFilter = new IntentFilter(
DownloadManager.ACTION_DOWNLOAD_COMPLETE);
registerReceiver(downloadReceiver, intentFilter);
}
#Override
protected void onPause() {
super.onPause();
unregisterReceiver(downloadReceiver);
}
#Override
protected void onDestroy() {
super.onDestroy();
// Delete files which should not get cached.
for (String file : filesToGetDeleted) {
final File f = new File(file);
if (f.exists()) {
f.delete();
}
}
}
#Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
switch (requestCode) {
case PERMISSIONS_REQUEST_STORAGE:
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Utils.makeLongToast(Main.this, getString(R.string.permission_write_external_storage_success));
}
else {
final String permission_write_external_storage_failure = getString(R.string.permission_write_external_storage_failure);
final String app_title = getString(R.string.app_name);
final String message = String.format(permission_write_external_storage_failure, app_title);
Utils.makeLongToast(Main.this, message);
boolean showRationale = ActivityCompat.shouldShowRequestPermissionRationale(Main.this, permissions[0]);
if (!showRationale) {
Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
Uri uri = Uri.fromParts("package", getPackageName(), null);
intent.setData(uri);
startActivity(intent);
}
}
break;
}
}
private void update(boolean force, boolean firstLoad) {
downloadManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
swipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipeRefreshLayout_main);
offline = getString(R.string.status_offline);
noPDF = getString(R.string.except_nopdf);
localLoc = getString(R.string.gen_loc);
jsonURL = getString(R.string.gen_json);
checkDir();
if (firstLoad) {
try {
downloadList = (ArrayList<HashMap<String, String>>) Utils.readObject(this, "downloadList");
if (downloadList != null) {
setList(true, true);
}
} catch (ClassNotFoundException | IOException e) {
Log.e(TAG, e.getMessage());
}
}
// Parse the JSON file of the plans from the URL
JSONParse j = new JSONParse();
j.force = force;
j.online = !Utils.isNoNetworkAvailable(this);
j.execute();
}
private void setList(final boolean downloadable, final boolean itemsAvailable) {
if (itemsAvailable) {
try {
Utils.writeObject(this, "downloadList", downloadList);
} catch (IOException e) {
Log.e(TAG, e.getMessage());
}
}
final ListView list = (ListView) findViewById(R.id.listView_main);
final ListAdapter adapter = new SimpleAdapter(this, downloadList,
android.R.layout.simple_list_item_1, new String[]{TAG_NAME},
new int[]{android.R.id.text1});
list.setAdapter(adapter);
// React when user click on item in the list
if (itemsAvailable) {
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View v, int pos,
long id) {
int hasStoragePermission = ContextCompat.checkSelfPermission(Main.this,
Manifest.permission.WRITE_EXTERNAL_STORAGE);
if (hasStoragePermission != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(Main.this,
new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
PERMISSIONS_REQUEST_STORAGE);
return;
}
final Uri downloadUri = Uri.parse(downloadList.get(pos).get(TAG_URL));
final String title = downloadList.get(pos).get(TAG_NAME);
final String shouldNotCache = downloadList.get(pos).get(TAG_SHOULD_NOT_CACHE);
file = new File(Environment.getExternalStorageDirectory() + "/"
+ localLoc + "/"
+ downloadList.get(pos).get(TAG_FILENAME) + ".pdf");
final Uri dst = Uri.fromFile(file);
if (file.exists()) {
final Intent pdfIntent = new Intent(Intent.ACTION_VIEW);
pdfIntent.setDataAndType(dst, "application/pdf");
pdfIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
try {
startActivity(pdfIntent);
} catch (ActivityNotFoundException e) {
Utils.makeLongToast(Main.this, noPDF);
Log.e(TAG, e.getMessage());
}
return;
}
if (downloadable && !Utils.isNoNetworkAvailable(Main.this)) {
// Download PDF
final Request request = new Request(downloadUri);
request.setTitle(title).setDestinationUri(dst);
downloadID = downloadManager.enqueue(request);
if (shouldNotCache.equals("true")) {
filesToGetDeleted.add(file.toString());
}
} else {
Utils.makeLongToast(Main.this, offline);
}
}
});
}
swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
#Override
public void onRefresh() {
update(true, false);
}
});
}
private class JSONParse extends AsyncTask<String, String, JSONObject> {
public boolean force = false;
public boolean online = false;
#Override
protected void onPreExecute() {
super.onPreExecute();
swipeRefreshLayout.post(new Runnable() {
#Override
public void run() {
swipeRefreshLayout.setRefreshing(true);
}
});
}
#Override
protected JSONObject doInBackground(String... args) {
return JSONParser.getJSONFromUrl(Main.this, jsonURL, force, online);
}
#Override
protected void onPostExecute(JSONObject json) {
swipeRefreshLayout.post(new Runnable() {
#Override
public void run() {
swipeRefreshLayout.setRefreshing(false);
}
});
downloadList.clear();
if (json == null) {
String error = getString(R.string.except_json);
if (!online) {
error = offline;
}
final HashMap<String, String> map = new HashMap<>();
map.put(TAG_NAME, error);
downloadList.add(map);
setList(false, false);
return;
}
try {
// Get JSON Array from URL
final JSONArray j_plans = json.getJSONArray(TAG_TYPE);
for (int i = 0; i < j_plans.length(); i++) {
final JSONObject c = j_plans.getJSONObject(i);
// Storing JSON item in a Variable
final String ver = c.getString(TAG_FILENAME);
final String name = c.getString(TAG_NAME);
final String api = c.getString(TAG_URL);
String shouldNotCache = "";
if (c.has(TAG_SHOULD_NOT_CACHE)) {
shouldNotCache = c.getString(TAG_SHOULD_NOT_CACHE);
}
// Adding value HashMap key => value
final HashMap<String, String> map = new HashMap<>();
map.put(TAG_FILENAME, ver);
map.put(TAG_NAME, name);
map.put(TAG_URL, api);
map.put(TAG_SHOULD_NOT_CACHE, shouldNotCache);
downloadList.add(map);
setList(online, true);
}
} catch (JSONException e) {
Log.e(TAG, e.getMessage());
}
}
}
SO how do I get the result of the above code and display it on main screen every time the user opens app

MediaPlayer "Couldn't open <url>"?

I did search and tried all solutions found on Stack / Android documentation or tutorials
Any idea why I can't play a video URL (from YT for example) inside a VideoView into my app?
Added INTERNET permissions inside AndroidManifest file, also this is the part of my code:
String url = "http://www.youtube.com/watch?v="+eventData.getYoutube_id();
final VideoView vw = views.getVideoView(R.id.vw_media);
vw.setVisibility(View.VISIBLE);
try{
MediaController mc = new MediaController(context);
mc.setAnchorView(mc);
Uri video = Uri.parse(url);
vw.setMediaController(mc);
vw.setVideoURI(video);
catch (Exception e){
Log.d(TAG, e.getMessage());
}
vw.requestFocus();
vw.start();
I get a message in app that say "Can't play this video"
Logcat:
MediaPlayer: Couldn't open http://www.youtube.com/watch?v=sfkmKzr8zgg: java.io.FileNotFoundException: No content provider: http://www.youtube.com/watch?v=sfkmKzr8zgg
Can't fix this at all..
Btw, Android version is 7.0

private class YourAsyncTask extends AsyncTask<Void, Void, Void>
{
ProgressDialog progressDialog;
#Override
protected void onPreExecute()
{
super.onPreExecute();
progressDialog = ProgressDialog.show(AlertDetail.this, "", "Loading Video wait...", true);
}
#Override
protected Void doInBackground(Void... params)
{
try
{
String url = "http://www.youtube.com/watch?v=1FJHYqE0RDg";
videoUrl = getUrlVideoRTSP(url);
Log.e("Video url for playing=========>>>>>", videoUrl);
}
catch (Exception e)
{
Log.e("Login Soap Calling in Exception", e.toString());
}
return null;
}
#Override
protected void onPostExecute(Void result)
{
super.onPostExecute(result);
progressDialog.dismiss();
videoView.setVideoURI(Uri.parse(videoUrl));
MediaController mc = new MediaController(AlertDetail.this);
videoView.setMediaController(mc);
videoView.requestFocus();
videoView.start();
mc.show();
}
}
public static String getUrlVideoRTSP(String urlYoutube)
{
try
{
String gdy = "http://gdata.youtube.com/feeds/api/videos/";
DocumentBuilder documentBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
String id = extractYoutubeId(urlYoutube);
URL url = new URL(gdy + id);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
Document doc = documentBuilder.parse(connection.getInputStream());
Element el = doc.getDocumentElement();
NodeList list = el.getElementsByTagName("media:content");///media:content
String cursor = urlYoutube;
for (int i = 0; i < list.getLength(); i++)
{
Node node = list.item(i);
if (node != null)
{
NamedNodeMap nodeMap = node.getAttributes();
HashMap<String, String> maps = new HashMap<String, String>();
for (int j = 0; j < nodeMap.getLength(); j++)
{
Attr att = (Attr) nodeMap.item(j);
maps.put(att.getName(), att.getValue());
}
if (maps.containsKey("yt:format"))
{
String f = maps.get("yt:format");
if (maps.containsKey("url"))
{
cursor = maps.get("url");
}
if (f.equals("1"))
return cursor;
}
}
}
return cursor;
}
catch (Exception ex)
{
Log.e("Get Url Video RTSP Exception======>>", ex.toString());
}
return urlYoutube;
}
protected static String extractYoutubeId(String url) throws MalformedURLException
{
String id = null;
try
{
String query = new URL(url).getQuery();
if (query != null)
{
String[] param = query.split("&");
for (String row : param)
{
String[] param1 = row.split("=");
if (param1[0].equals("v"))
{
id = param1[1];
}
}
}
else
{
if (url.contains("embed"))
{
id = url.substring(url.lastIndexOf("/") + 1);
}
}
}
catch (Exception ex)
{
Log.e("Exception", ex.toString());
}
return id;
}

Add this after mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mMediaPlayer.setAudioAttributes(new AudioAttributes.Builder()
.setFlags(AudioAttributes.FLAG_AUDIBILITY_ENFORCED)
.setLegacyStreamType(AudioManager.STREAM_ALARM)
.setUsage(AudioAttributes.USAGE_ALARM)
.setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
.build());

Android Foursquare how to get the token

I have an app that connects to my Foursquare account. The authentication is successful, but when it comes to showing my username (it shows null) and the list of venues around me, I can't get through it.
What should be done?
Main.java
public class Main extends Activity {
private FoursquareApp mFsqApp;
private ListView mListView;
private NearbyAdapter mAdapter;
private ArrayList<FsqVenue> mNearbyList;
private ProgressDialog mProgress;
public static final String CLIENT_ID = "XXXXXXXXXXXXXXX";
public static final String CLIENT_SECRET = "XXXXXXXXXXXXXXXXXXX";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final TextView nameTv = (TextView) findViewById(R.id.tv_name);
Button connectBtn = (Button) findViewById(R.id.b_connect);
final EditText latitudeEt = (EditText) findViewById(R.id.et_latitude);
final EditText longitudeEt = (EditText)findViewById(R.id.et_longitude);
Button goBtn = (Button) findViewById(R.id.b_go);
mListView = (ListView) findViewById(R.id.lv_places);
mFsqApp = new FoursquareApp(this, CLIENT_ID, CLIENT_SECRET);
mAdapter = new NearbyAdapter(this);
mNearbyList = new ArrayList<FsqVenue>();
mProgress = new ProgressDialog(this);
mProgress.setMessage("Loading data ...");
if (mFsqApp.hasAccessToken()) nameTv.setText("Connected as " + mFsqApp.getUserName());
FsqAuthListener listener = new FsqAuthListener() {
#Override
public void onSuccess() {
Toast.makeText(Main.this, "Connected as " + mFsqApp.getUserName(), Toast.LENGTH_SHORT).show();
nameTv.setText("Connected as " + mFsqApp.getUserName());
}
#Override
public void onFail(String error) {
Toast.makeText(Main.this, error, Toast.LENGTH_SHORT).show();
}
};
mFsqApp.setListener(listener);
//get access token and user name from foursquare
connectBtn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
mFsqApp.authorize();
}
});
//use access token to get nearby places
goBtn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
String latitude = latitudeEt.getText().toString();
String longitude = longitudeEt.getText().toString();
if (latitude.equals("") || longitude.equals("")) {
Toast.makeText(Main.this, "Latitude or longitude is empty", Toast.LENGTH_SHORT).show();
return;
}
double lat = Double.valueOf(latitude);
double lon = Double.valueOf(longitude);
loadNearbyPlaces(lat, lon);
}
});
}
private void loadNearbyPlaces(final double latitude, final double longitude) {
mProgress.show();
new Thread() {
#Override
public void run() {
int what = 0;
try {
mNearbyList = mFsqApp.getNearby(latitude, longitude);
} catch (Exception e) {
what = 1;
e.printStackTrace();
}
mHandler.sendMessage(mHandler.obtainMessage(what));
}
}.start();
}
private Handler mHandler = new Handler() {
#Override
public void handleMessage(Message msg) {
mProgress.dismiss();
if (msg.what == 0) {
if (mNearbyList.size() == 0) {
Toast.makeText(Main.this, "No nearby places available", Toast.LENGTH_SHORT).show();
return;
}
mAdapter.setData(mNearbyList);
mListView.setAdapter(mAdapter);
} else {
Toast.makeText(Main.this, "Failed to load nearby places", Toast.LENGTH_SHORT).show();
}
}
};
}
FoursquareApp.java
public class FoursquareApp {
private FoursquareSession mSession;
private FoursquareDialog mDialog;
private FsqAuthListener mListener;
private ProgressDialog mProgress;
private String mTokenUrl;
private String mAccessToken;
public static final String CALLBACK_URL = "https://www.foursquare.com";
private static final String AUTH_URL = "https://foursquare.com/oauth2/authenticate";
private static final String TOKEN_URL = "https://foursquare.com/oauth2/access_token";
private static final String API_URL = "https://api.foursquare.com/v2";
private static final String TAG = "FoursquareApi";
public FoursquareApp(Context context, String clientId, String clientSecret) {
mSession = new FoursquareSession(context);
mAccessToken = mSession.getAccessToken();
mTokenUrl = TOKEN_URL + "?client_id=" + clientId + "&client_secret=" + clientSecret + "&grant_type=authorization_code"
+ "&redirect_uri=" + CALLBACK_URL;
String url = AUTH_URL + "?client_id=" + clientId + "&response_type=code" + "&redirect_uri=" + CALLBACK_URL;
FsqDialogListener listener = new FsqDialogListener() {
#Override
public void onComplete(String code) {
getAccessToken(code);
}
#Override
public void onError(String error) {
mListener.onFail("Authorization failed");
}
};
mDialog = new FoursquareDialog(context, url, listener);
mProgress = new ProgressDialog(context);
mProgress.setCancelable(false);
}
private void getAccessToken(final String code) {
mProgress.setMessage("Getting access token ...");
mProgress.show();
new Thread() {
#Override
public void run() {
Log.i(TAG, "Getting access token");
int what = 0;
try {
URL url = new URL(mTokenUrl + "&code=" + code);
Log.i(TAG, "Opening URL " + url.toString());
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("GET");
urlConnection.setDoInput(true);
//urlConnection.setDoOutput(true);
urlConnection.connect();
JSONObject jsonObj = (JSONObject) new JSONTokener(streamToString(urlConnection.getInputStream())).nextValue();
mAccessToken = jsonObj.getString("access_token");
} catch (Exception ex) {
what = 1;
ex.printStackTrace();
}
mHandler.sendMessage(mHandler.obtainMessage(what, 1, 0));
}
}.start();
}
private void fetchUserName() {
mProgress.setMessage("Finalizing ...");
new Thread() {
#Override
public void run() {
Log.i(TAG, "Fetching user name");
int what = 0;
try {
String v = timeMilisToString(System.currentTimeMillis());
URL url = new URL(API_URL + "/users/self?oauth_token=" + mAccessToken + "&v=" + v);
Log.d(TAG, "Opening URL " + url.toString());
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("GET");
urlConnection.setDoInput(true);
urlConnection.setDoOutput(true);
urlConnection.connect();
String response = streamToString(urlConnection.getInputStream());
JSONObject jsonObj = (JSONObject) new JSONTokener(response).nextValue();
JSONObject resp = (JSONObject) jsonObj.get("response");
JSONObject user = (JSONObject) resp.get("user");
String firstName = user.getString("firstName");
String lastName = user.getString("lastName");
Log.i(TAG, "Got user name: " + firstName + " " + lastName);
mSession.storeAccessToken(mAccessToken, firstName + " " + lastName);
} catch (Exception ex) {
what = 1;
ex.printStackTrace();
}
mHandler.sendMessage(mHandler.obtainMessage(what, 2, 0));
}
}.start();
}
private Handler mHandler = new Handler() {
#Override
public void handleMessage(Message msg) {
if (msg.arg1 == 1) {
if (msg.what == 0) {
fetchUserName();
} else {
mProgress.dismiss();
mListener.onFail("Failed to get access token");
}
} else {
mProgress.dismiss();
mListener.onSuccess();
}
}
};
public boolean hasAccessToken() {
return (mAccessToken == null) ? false : true;
}
public void setListener(FsqAuthListener listener) {
mListener = listener;
}
public String getUserName() {
return mSession.getUsername();
}
public void authorize() {
mDialog.show();
}
public ArrayList<FsqVenue> getNearby(double latitude, double longitude) throws Exception {
ArrayList<FsqVenue> venueList = new ArrayList<FsqVenue>();
try {
String v = timeMilisToString(System.currentTimeMillis());
String ll = String.valueOf(latitude) + "," + String.valueOf(longitude);
URL url = new URL(API_URL + "/venues/search?ll=" + ll + "&oauth_token=" + mAccessToken + "&v=" + v);
Log.d(TAG, "Opening URL " + url.toString());
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("GET");
urlConnection.setDoInput(true);
//urlConnection.setDoOutput(true);
urlConnection.connect();
String response = streamToString(urlConnection.getInputStream());
JSONObject jsonObj = (JSONObject) new JSONTokener(response).nextValue();
JSONArray groups = (JSONArray) jsonObj.getJSONObject("response").getJSONArray("groups");
int length = groups.length();
if (length > 0) {
for (int i = 0; i < length; i++) {
JSONObject group = (JSONObject) groups.get(i);
JSONArray items = (JSONArray) group.getJSONArray("items");
int ilength = items.length();
for (int j = 0; j < ilength; j++) {
JSONObject item = (JSONObject) items.get(j);
FsqVenue venue = new FsqVenue();
venue.id = item.getString("id");
venue.name = item.getString("name");
JSONObject location = (JSONObject) item.getJSONObject("location");
Location loc = new Location(LocationManager.GPS_PROVIDER);
loc.setLatitude(Double.valueOf(location.getString("lat")));
loc.setLongitude(Double.valueOf(location.getString("lng")));
venue.location = loc;
venue.address = location.getString("address");
venue.distance = location.getInt("distance");
venue.herenow = item.getJSONObject("hereNow").getInt("count");
venue.type = group.getString("type");
venueList.add(venue);
}
}
}
} catch (Exception ex) {
throw ex;
}
return venueList;
}
private String streamToString(InputStream is) throws IOException {
String str = "";
if (is != null) {
StringBuilder sb = new StringBuilder();
String line;
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
while ((line = reader.readLine()) != null) {
sb.append(line);
}
reader.close();
} finally {
is.close();
}
str = sb.toString();
}
return str;
}
private String timeMilisToString(long milis) {
SimpleDateFormat sd = new SimpleDateFormat("yyyyMMdd");
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(milis);
return sd.format(calendar.getTime());
}
public interface FsqAuthListener {
public abstract void onSuccess();
public abstract void onFail(String error);
}
}
FsqVenue.java
public class FsqVenue {
public String id;
public String name;
public String address;
public String type;
public Location location;
public int direction;
public int distance;
public int herenow;
}
FoursquareDialog.java
public class FoursquareDialog extends Dialog {
static final float[] DIMENSIONS_LANDSCAPE = {460, 260};
static final float[] DIMENSIONS_PORTRAIT = {280, 420};
static final FrameLayout.LayoutParams FILL = new FrameLayout.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT,
ViewGroup.LayoutParams.FILL_PARENT);
static final int MARGIN = 4;
static final int PADDING = 2;
private String mUrl;
private FsqDialogListener mListener;
private ProgressDialog mSpinner;
private WebView mWebView;
private LinearLayout mContent;
private TextView mTitle;
private static final String TAG = "Foursquare-WebView";
public FoursquareDialog(Context context, String url, FsqDialogListener listener) {
super(context);
mUrl = url;
mListener = listener;
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mSpinner = new ProgressDialog(getContext());
mSpinner.requestWindowFeature(Window.FEATURE_NO_TITLE);
mSpinner.setMessage("Loading...");
mContent = new LinearLayout(getContext());
mContent.setOrientation(LinearLayout.VERTICAL);
setUpTitle();
setUpWebView();
Display display = getWindow().getWindowManager().getDefaultDisplay();
final float scale = getContext().getResources().getDisplayMetrics().density;
float[] dimensions = (display.getWidth() < display.getHeight()) ? DIMENSIONS_PORTRAIT : DIMENSIONS_LANDSCAPE;
addContentView(mContent, new FrameLayout.LayoutParams((int) (dimensions[0] * scale + 0.5f),
(int) (dimensions[1] * scale + 0.5f)));
CookieSyncManager.createInstance(getContext());
CookieManager cookieManager = CookieManager.getInstance();
cookieManager.removeAllCookie();
}
private void setUpTitle() {
requestWindowFeature(Window.FEATURE_NO_TITLE);
Drawable icon = getContext().getResources().getDrawable(R.drawable.foursquare_icon);
mTitle = new TextView(getContext());
mTitle.setText("Foursquare");
mTitle.setTextColor(Color.WHITE);
mTitle.setTypeface(Typeface.DEFAULT_BOLD);
mTitle.setBackgroundColor(0xFF0cbadf);
mTitle.setPadding(MARGIN + PADDING, MARGIN, MARGIN, MARGIN);
mTitle.setCompoundDrawablePadding(MARGIN + PADDING);
mTitle.setCompoundDrawablesWithIntrinsicBounds(icon, null, null, null);
mContent.addView(mTitle);
}
private void setUpWebView() {
mWebView = new WebView(getContext());
mWebView.setVerticalScrollBarEnabled(false);
mWebView.setHorizontalScrollBarEnabled(false);
mWebView.setWebViewClient(new TwitterWebViewClient());
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.loadUrl(mUrl);
mWebView.setLayoutParams(FILL);
mContent.addView(mWebView);
}
private class TwitterWebViewClient extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
Log.d(TAG, "Redirecting URL " + url);
if (url.startsWith(FoursquareApp.CALLBACK_URL)) {
String urls[] = url.split("=");
mListener.onComplete(urls[1]);
FoursquareDialog.this.dismiss();
return true;
}
return false;
}
#Override
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
Log.d(TAG, "Page error: " + description);
super.onReceivedError(view, errorCode, description, failingUrl);
mListener.onError(description);
FoursquareDialog.this.dismiss();
}
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
Log.d(TAG, "Loading URL: " + url);
super.onPageStarted(view, url, favicon);
mSpinner.show();
}
#Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
String title = mWebView.getTitle();
if (title != null && title.length() > 0) {
mTitle.setText(title);
}
mSpinner.dismiss();
}
}
public interface FsqDialogListener {
public abstract void onComplete(String accessToken);
public abstract void onError(String error);
}
}
FoursquareSession.java
public class FoursquareSession {
private SharedPreferences sharedPref;
private Editor editor;
private static final String SHARED = "Foursquare_Preferences";
private static final String FSQ_USERNAME = "username";
private static final String FSQ_ACCESS_TOKEN = "access_token";
public FoursquareSession(Context context) {
sharedPref = context.getSharedPreferences(SHARED, Context.MODE_PRIVATE);
editor = sharedPref.edit();
}
public void storeAccessToken(String accessToken, String username) {
editor.putString(FSQ_ACCESS_TOKEN, accessToken);
editor.putString(FSQ_USERNAME, username);
editor.commit();
}
public void resetAccessToken() {
editor.putString(FSQ_ACCESS_TOKEN, null);
editor.putString(FSQ_USERNAME, null);
editor.commit();
}
public String getUsername() {
return sharedPref.getString(FSQ_USERNAME, null);
}
public String getAccessToken() {
return sharedPref.getString(FSQ_ACCESS_TOKEN, null);
}
}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="net.londatiga.fsq"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="#drawable/icon" android:label="#string/app_name">
<activity android:name=".Main" android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
<uses-permission android:name="android.permission.INTERNET"></uses- permission>
</manifest>

Returning a bitmap file from AsyncTask freezes UI thread

I have created a simple Activity. The activity is responsible for downloading data from parse.com database and populating a linear layout. In the process, I am dynamically creating the linear layout with TextViews and ImageViews according according to the content.
The problem is that, whenever I try to download an image, I use as AsyncTask Downloading class, which results in slowing down the UI thread! I am currently trying to return the bitmap file from the AsyncTask Image downloading class using: returnedBitmap = new LoadImage().execute(src).get(); which might be responsible for slowing down the UI thread. I have to do this because the caller method geneterImageView will return an imageview when it receives the bitmap file.
The complete Activity code:
public class MainActivity extends ActionBarActivity {
ArrayList<String> heightList = new ArrayList<String>();
ArrayList<String> reversedList = new ArrayList<String>();
ImageView imageView1;
Bitmap bitmap;
RelativeLayout parent_layout;
ParseObject user;
#Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// imageView1 = (ImageView)findViewById(R.id.imageView1);
parent_layout = (RelativeLayout) findViewById(R.id.parent_layout);
login("xyz#xyz.com", "xyz");
}
private void loopThroughArrayAndAttach(){
LinearLayout llInner = new LinearLayout(this);
llInner.setOrientation(LinearLayout.VERTICAL);
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
parent_layout.addView(llInner);
for (int i = 0; i < heightList.size(); i++) {
if (hasNoImagess(heightList.get(i)) == true) {
// No images.
TextView myText = geneterTextView(heightList.get(i));
llInner.addView(myText);
// geneterTextView(heightList.get(i));
} else {
ImageView myImage = geneterImageView(heightList.get(i));
llInner.addView(myImage);
// geneterImageView(heightList.get(i));
}
}
}
public static boolean hasNoImagess(String contents){
Document doc = Jsoup.parse(contents);
Element element = doc.body();
Elements elements = element.select("img");
if (elements.isEmpty()) {
return true;
} else {
return false;
}
}
public ImageView geneterImageView(String imgContent){
// Will need to run via background thread - like aysnc
// Extract the image file via jsoup
// Insert it into a imagevieww
// Inser that into a layout.
Log.d("IN IMAGE ", " " + imgContent);
Document doc = Jsoup.parse(imgContent);
Elements img = doc.getElementsByTag("img");
Bitmap returnedBitmap = null;
for (Element el : img) {
String src = el.absUrl("src");
System.out.println("src attribute is : " + src);
// new DownloadImageTask((ImageView)
// findViewById(R.id.imageView1)).execute(src);
try {
returnedBitmap = new LoadImage().execute(src).get();
// imageView1.setImageBitmap(returnedBitmap);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ExecutionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
ImageView iv = new ImageView(this);
iv.setImageBitmap(returnedBitmap);
return iv;
}
public TextView geneterTextView(String textContent){
// Will need to run via background thread.
Log.i("In TEXT ", " " + textContent);
TextView tv = new TextView(this);
tv.setText(Html.fromHtml(textContent));
return tv;
}
// to download images
private class LoadImage extends AsyncTask<String, String, Bitmap> {
#Override
protected void onPreExecute(){
super.onPreExecute();
}
protected Bitmap doInBackground(String... args){
try {
bitmap = BitmapFactory.decodeStream((InputStream) new URL(args[0]).getContent());
} catch (Exception e) {
e.printStackTrace();
}
return bitmap;
}
protected void onPostExecute(Bitmap image){
if (image != null) {
} else {
Toast.makeText(MainActivity.this, "Image Does Not exist or Network Error", Toast.LENGTH_SHORT).show();
}
}
}
// to login to parse
private void login(final String username, String password){
ParseUser.logInInBackground(username, password, new LogInCallback() {
#Override
public void done(ParseUser user, ParseException e){
if (e == null) {
// if login sucess
// Start intent
// loginSuccess();
Toast.makeText(MainActivity.this, "Success", Toast.LENGTH_SHORT).show();
CloudCallStudentPosts(user);
} else {
Toast.makeText(MainActivity.this, "Failure", Toast.LENGTH_SHORT).show();
}
}
});
}
// //to get data from parse
public void CloudCallStudentPosts(ParseObject s){
setRichStory(s);
}
private void setRichStory(ParseObject s){
// Simialr to setStory, once implemented delete setStory()
new AddStoryAsync(s).execute();
}
class AddStoryAsync extends AsyncTask<Void, Object, Void> {
private static final String TAG = "LazyListView";
ParseObject s;
public AddStoryAsync(ParseObject s) {
this.s = s;
Log.w("In richStory", "ParseObject Id: " + s.getObjectId());
}
#Override
protected void onPreExecute(){
}
#Override
protected Void doInBackground(Void... unused){
HashMap<String, Object> params = new HashMap<String, Object>();
params.put("userid", this.s.getObjectId());
params.put("skip", 0);
ParseCloud.callFunctionInBackground("studentsPosts", params, new FunctionCallback<List<List<ParseObject>>>() {
#Override
public void done(List<List<ParseObject>> postList, com.parse.ParseException arg1){
if (postList == null) {
} else {
if (postList.size() > 0) {
// CustomWebView cwb;
for (int i = 0; i < postList.size(); i++) {
// final Post post = new Post();
if (postList.get(i).get(0).get("htmlContent") == null) {
}
if (postList.get(i).get(0).get("htmlContent") != null) {
Log.e("htmlContent parse", postList.get(i).get(0).get("htmlContent").toString());
// Parse HTML String using JSoup library
String HTMLSTring = postList.get(i).get(0).get("htmlContent").toString();
Document html = Jsoup.parse(HTMLSTring);
Elements paragraphs = html.getElementsByTag("p");
for (org.jsoup.nodes.Element paragraph : paragraphs) {
String paragraphText = paragraph.toString();
Log.e("paragraphText", paragraphText);
heightList.add(paragraphText);
}
loopThroughArrayAndAttach();
}
}
}
}
}
});
return (null);
}
#Override
protected void onProgressUpdate(Object... object){
Log.w("onProgressUpdate ", " " + object[0].getClass());
Log.w("adding to arrayPostList ", " " + object[0].getClass());
}
#Override
protected void onPostExecute(Void unused){
}
}
}
Is there any substitute for getting the bitmap from the AsyncTask and set it in the imageview? Should there be a logical alteration in the approach?

try this :
dont call get() #praveen. instead pass the imageview Reference in the constructor
WorkerThread mWorkerThread = new WorkerThread(mImageView);
mWorkerThread.execute(src);
private class WorkerThread extends AsyncTask<String, String, Bitmap> {
private WeakReference<ImageView> imageViewReference;
public WorkerThread(ImageView imageView) {
super();
imageViewReference = new WeakReference<ImageView>(imageView);
}
#Override
protected Bitmap doInBackground(String... args) {
Bitmap bitmap = null;
try {
bitmap = BitmapFactory.decodeStream((InputStream) new URL(args[0]).getContent());
} catch (Exception e) {
e.printStackTrace();
}
return bitmap;
}
#Override
protected void onPostExecute(Bitmap result) {
super.onPostExecute(result);
if (result != null && imageViewReference.get() != null) {
imageViewReference.get().setImageBitmap(result);
}
}
}

Don't call get() method on AsyncTask it makes main thread to wait for AsyncTask to complete. If you really want to start something only after AsyncTask completes put that into onPostExecute() of your AsynTask

As others have mentioned, your code has several design flaws which makes it difficult to provide you a solution to your problem.
The whole purpose of an AsyncTask is to execute on a background thread. Executing networking and bitmap processing on the main thread will never work. You must refactor your code to accommodate this. Consider the following solution to this particular problem at least:
// to download images
private class LoadImage extends AsyncTask<String, Void, Bitmap> {
protected Bitmap doInBackground(String... args) {
String imgContent = args[0];
Document doc = Jsoup.parse(imgContent);
Elements img = doc.getElementsByTag("img");
for (Element el : img) {
String src = el.absUrl("src");
System.out.println("src attribute is : " + src);
try {
return BitmapFactory.decodeStream((InputStream) new URL(src).getContent());
} catch (Exception e) {
// log
}
}
return null;
}
protected void onPostExecute(Bitmap b) {
ImageView iv = new ImageView(MainActivity.this);
iv.setImageBitmap(b);
llInner.addView(iv);
}
}
You can then do something like:
for (int i = 0; i < heightList.size(); i++) {
new LoadImage(heightList.get(i)).execute();
}
However, this may not be desirable depending on how many AsyncTasks you end up creating. But this is the idea.

How to get YouTube Video ID from PlaylistID?

how do I get ID of a youtube video that is part of a playlist
example a link like this:
https://www.youtube.com/watch?v=kXYiU_JCYtU&list=PL87FA01F68C540290
this is the gdata
http://gdata.youtube.com/feeds/api/playlists/PL87FA01F68C540290?v=2&alt=jsonc&max-results=50
THIS IS MY CODE
public class Episodi extends Activity implements OnClickListener {
ImageView mainThumb;
TextView mainTitle;
TextView mainTime;
LinearLayout videos;
ArrayList<String> links;
URL jsonURL;
/** Called when the activity is first created. */
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.episodi);
new ParseVideoDataTask().execute();
mainThumb = (ImageView) findViewById(R.id.mainThumb);
mainTitle = (TextView) findViewById(R.id.mainTitle);
mainTime = (TextView) findViewById(R.id.mainTime);
videos = (LinearLayout) findViewById(R.id.videos);
}
public class ParseVideoDataTask extends AsyncTask<String, String, String> {
int count = 0;
#Override
protected String doInBackground(String... params) {
URL jsonURL = null;
URLConnection jc;
links = new ArrayList<String>();
try {
jsonURL = new URL("http://gdata.youtube.com/feeds/api/playlists/" +
"PL87FA01F68C540290" +
"?v=2&alt=jsonc&max-results=50");
jc = jsonURL.openConnection();
InputStream is = jc.getInputStream();
String jsonTxt = IOUtils.toString(is);
JSONObject jj = new JSONObject(jsonTxt);
JSONObject jdata = jj.getJSONObject("data");
JSONArray aitems = jdata.getJSONArray("items");
for (int i=0;i<aitems.length();i++) {
JSONObject item = aitems.getJSONObject(i);
JSONObject video = item.getJSONObject("video");
String title = video.getString("title");
JSONObject player = video.getJSONObject("player");
String link = player.getString("default");
String length = video.getString("duration");
JSONObject thumbnail = video.getJSONObject("thumbnail");
String thumbnailUrl = thumbnail.getString("hqDefault");
String[] deets = new String[4];
deets[0] = title;
deets[1] = thumbnailUrl;
deets[2] = length;
links.add(link);
publishProgress(deets);
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
#Override
protected void onProgressUpdate(final String... deets) {
count++;
if (count == 1) {
Picasso.with(getBaseContext()).load(deets[1]).into(mainThumb);
mainTitle.setText(deets[0]);
mainTime.setText(formatLength(deets[2]));
mainThumb.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(Episodi.this,Video.class);
//I want to insert .putExtra here for the VIDEO ID (example. kXYiU_JCYtU)
startActivity(i);
}
});
} else {
LayoutInflater layoutInflater = (LayoutInflater)Episodi.this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View video = layoutInflater.inflate(R.layout.videothumb, null);
ImageView thumb = (ImageView) video.findViewById(R.id.thumb);
TextView title = (TextView) video.findViewById(R.id.title);
TextView time = (TextView) video.findViewById(R.id.time);
Picasso.with(getBaseContext()).load(deets[1]).into(thumb);
title.setText(deets[0]);
time.setText(formatLength(deets[2]));
video.setPadding(20, 20, 20, 20);
videos.addView(video);
video.setId(count-1);
video.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent i = new Intent(Episodi.this,Video.class);
//I want to insert .putExtra here for the VIDEO ID (example. kXYiU_JCYtU)
startActivity(i);
}
});
}
}
}
private CharSequence formatLength(String secs) {
int secsIn = Integer.parseInt(secs);
int hours = secsIn / 3600,
remainder = secsIn % 3600,
minutes = remainder / 60,
seconds = remainder % 60;
return ((minutes < 10 ? "0" : "") + minutes
+ ":" + (seconds< 10 ? "0" : "") + seconds );
}
public void onDestroy() {
super.onDestroy();
for (int i=0;i<videos.getChildCount();i++) {
View v = videos.getChildAt(i);
if (v instanceof ImageView) {
ImageView iv = (ImageView) v;
((BitmapDrawable)iv.getDrawable()).getBitmap().recycle();
}
}
}
}

As I can see here you have JSON formated string as a response.
There are many JSON APIs, you can use provided in Android. Just make JSONObject and get the data you are interested in.
JSONObject playlist = new JSONObject(response);
// list items
JSONArray items = playlist.getJSONObject("data").getJSONArray("items");
// traverse items array and get video url
for(int i=0; i<items.length(); i++) {
JSONObject item = items.getJSONObject(i);
// video url
String videoURL = item.getJSONObject("video").getJSONObject("player").getString("default");
}
You need to wrap all this in try-catch block.
EDIT
As I understood you need to parse the strings you have in the list links.
for(String link : links) {
String id = link.split("&")[0].split("v=")[1];
// do what you need with the link
}