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BitmapFactory.decodeStream leads to : D/skia: --- Failed to create image decoder with message 'unimplemented'

I'm trying to download an image from a URL by creating a Bitmap using
bitmapFactory.decodeStream(InputStream) and then imageView.setImageBitmap(bitmap) but I am always getting this error:
D/skia: --- Failed to create image decoder with message
'unimplemented'. package com.example.flickrapp;
Here is my code:
import statements will go here ...
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
#Override
protected void onStart() {
super.onStart();
Button b = (Button)findViewById(R.id.getanimage);
b.setOnClickListener(new GetImageOnClickListener() {
#Override
public void onClick(View v) {
super.onClick(v);
}
});
}
public class GetImageOnClickListener implements View.OnClickListener {
#Override
public void onClick(View v) {
AsyncFlickrJSONData imagesData = new AsyncFlickrJSONData();
imagesData.execute("https://www.flickr.com/services/feeds/photos_public.gne?tags=trees&format=json");
}
}
public class AsyncFlickrJSONData extends AsyncTask<String, Void, JSONObject> {
#Override
protected JSONObject doInBackground(String... strings) {
String flickrUrl = strings[0];
JSONObject jsonFlickr = null;
URL url = null;
try {
url = new URL(flickrUrl);
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
try {
InputStream in = new BufferedInputStream(urlConnection.getInputStream());
String s1 = readStream(in);
int lengthS = s1.length();
String s = (String) s1.subSequence(15, lengthS-1);
jsonFlickr = new JSONObject(s);
} finally {
urlConnection.disconnect();
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException | JSONException e) {
e.printStackTrace();
}
return jsonFlickr;
}
#Override
protected void onPostExecute(JSONObject jsonFlickr) {
super.onPostExecute(jsonFlickr);
try {
String firstUrl = jsonFlickr.getJSONArray("items").getJSONObject(0).getString("link");
AsyncBitmapDownloader firstAsyncImage = new AsyncBitmapDownloader();
firstAsyncImage.execute(firstUrl);
Log.i("JFL", firstUrl);
} catch (JSONException e) {
e.printStackTrace();
}
}
private String readStream(InputStream in) {
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
StringBuilder sb = new StringBuilder();
String line = null;
try {
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
} catch (IOException e) {
Log.e(TAG, "IOException", e);
} finally {
try {
in.close();
} catch (IOException e) {
Log.e(TAG, "IOException", e);
}
}
return sb.toString();
}
}
public class AsyncBitmapDownloader extends AsyncTask<String, Void, Bitmap> {
ImageView firstImage = (ImageView) findViewById(R.id.image);
#Override
protected Bitmap doInBackground(String... strings) {
String imageUrl = strings[0];
Bitmap bm = null;
URL url = null;
try {
url = new URL(imageUrl);
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
try {
InputStream in = new BufferedInputStream(urlConnection.getInputStream());
bm = BitmapFactory.decodeStream(in);
} finally {
urlConnection.disconnect();
}
} catch(IOException e){
e.printStackTrace();
}
return bm;
}
#Override
protected void onPostExecute(Bitmap bitmap) {
super.onPostExecute(bitmap);
firstImage.setImageBitmap(bitmap);
}
}
}
Any Suggestions or Ideas are welcomed :)

Display to the image view on list view click

I am making this news application in which I m finding difficulties. here I am using list view.here I am performing background task also and even in this I am able to fetch all the news. The only thing which is not working is when I click on list item its respective image is not showing.
How can I take the image from url and when clicked on the item, the image of that respective list is opened?
public class MainActivity extends AppCompatActivity
{
ListView aboutNews;
Bitmap myImage;
ImageView newnewImage;
ArrayAdapter<String> myArrayAdapter;
ArrayList<String> newscontent , urlImageContent;
String finalUrl;
public void DisplayNews(String title, String urlToImage) {
myArrayAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, newscontent); //i will not put this on oncreate because it will slow down my app.
aboutNews.setAdapter(myArrayAdapter);
newscontent.add(title);
urlImageContent.add(urlToImage);
}
public class downloadTask extends AsyncTask<String, Void, String> {
#Override
protected String doInBackground(String... urls) {
String result = "";
URL url;
HttpURLConnection urlConnection = null;
try {
url = new URL(urls[0]);
urlConnection = (HttpURLConnection) url.openConnection();
InputStream in = urlConnection.getInputStream();
InputStreamReader reader = new InputStreamReader(in);
int data = reader.read();
while (data != -1) {
char current = (char) data;
result += current;
data = reader.read();
}
return result;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
#Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
try {
JSONObject jsonObject = new JSONObject(s);
String news = jsonObject.getString("articles");
JSONArray arr = new JSONArray(news);
for (int i = 0; i < arr.length(); i++) {
JSONObject jsonPart = arr.getJSONObject(i);
String title = jsonPart.getString("title");
String description = jsonPart.getString("description");
String urlToImage = jsonPart.getString("urlToImage");
String publish = jsonPart.getString("publishedAt");
String content = jsonPart.getString("content");
DisplayNews(title , urlToImage);
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
public class ImageDownloader extends AsyncTask<String, Void, Bitmap> {
#Override
protected Bitmap doInBackground(String... urls) { //we have renamed strings to url
try {
URL url = new URL(urls[0]);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.connect();
InputStream in = connection.getInputStream();
Bitmap myBitmap = BitmapFactory.decodeStream(in); //it adds everything to the bitmap.
return myBitmap;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
}
#Override
protected void onCreate (Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
newscontent = new ArrayList<String>();
urlImageContent = new ArrayList<String>();
aboutNews = findViewById(R.id.aboutNews);
//.........................................................................
aboutNews.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
finalUrl = urlImageContent.get(i);
ImageDownloader task1 = new ImageDownloader();
try {
myImage = task1.execute(finalUrl).get();
newnewImage.setImageBitmap(myImage);
} catch (Exception e) {
e.printStackTrace();
}
}
});
//.........................................................................
downloadTask task = new downloadTask();
try {
task.execute("https://newsapi.org/v2/top-headlines?country=in&apiKey=API_KEY");
} catch (Exception e) {
e.printStackTrace();
}
}
}

Call Async task from start of activity in android

I have a Async task like this in my app:
private class getUserSummary extends AsyncTask<String, String, JSONObject> {
private ProgressDialog pDialog;
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(DashboardActivity.this);
pDialog.setMessage("Getting sales summary...");
//pDialog.setTitle("Getting sales summary...");
pDialog.setIndeterminate(true);
pDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
pDialog.setCancelable(false);
pDialog.show();
}
#Override
protected JSONObject doInBackground(String... strings) {
String JsonResponse = null;
String JsonDATA = "email=my email address";
HttpURLConnection urlConnection = null;
BufferedReader reader = null;
try {
ServiceUrl smf = new ServiceUrl();
URL url = new URL(smf.getUserSummaryUrl());
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setDoOutput(true);
// is output buffer writter
urlConnection.setRequestMethod("GET");
urlConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
//set headers and method
Writer writer = new BufferedWriter(new OutputStreamWriter(urlConnection.getOutputStream(), "UTF-8"));
writer.write(JsonDATA);
// json data
writer.close();
int responseCode = urlConnection.getResponseCode();
if (responseCode == 400) {
InputStream inputResponse = urlConnection.getErrorStream();
reader = new BufferedReader(new InputStreamReader(inputResponse));
StringBuffer errorBuffer = new StringBuffer();
String errorLine;
while ((errorLine = reader.readLine()) != null) {
errorBuffer.append(errorLine + "\n");
}
Log.i("Error text", errorBuffer.toString());
return new JSONObject(errorBuffer.toString());
}
//Log.i("Response code", String.valueOf(inputStream));
InputStream inputStream = urlConnection.getInputStream();
//input stream
StringBuffer buffer = new StringBuffer();
if (inputStream == null) {
// Nothing to do.
return null;
}
reader = new BufferedReader(new InputStreamReader(inputStream));
String inputLine;
while ((inputLine = reader.readLine()) != null)
buffer.append(inputLine + "\n");
if (buffer.length() == 0) {
// Stream was empty. No point in parsing.
return null;
}
JsonResponse = buffer.toString();
//response data
Log.i("RESPONSE", JsonResponse);
return new JSONObject(JsonResponse);
} catch (ProtocolException e) {
e.printStackTrace();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
if (reader != null) {
try {
reader.close();
} catch (final IOException e) {
Log.e("ERROR", "Error closing stream", e);
}
}
}
return null;
}
protected void onPostExecute(JSONObject result) {
pDialog.dismiss();
//post operation here
}
}
and calling this in onCreate() method
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_dashboard);
ButterKnife.bind(this);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
initCollapsingToolbar();
new getUserSummary().execute();
}
I am running this as soon as user login activity distroyed. that's why I need to call this on onCreate() method. But I am getting this error when the call this in onCreate() method
android.view.WindowLeaked: Activity softlogic.computers.softlogicsalesreward.DashboardActivity has leaked window com.android.internal.policy.PhoneWindow$DecorView{5329b90 V.E...... R......D 0,0-1002,348} that was originally added here
at android.view.ViewRootImpl.<init>(ViewRootImpl.java:603)
at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:326)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:109)
at android.app.Dialog.show(Dialog.java:505)
at softlogic.computers.softlogicsalesreward.DashboardActivity$getUserSummary.onPreExecute(DashboardActivity.java:88)
at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:604)
at android.os.AsyncTask.execute(AsyncTask.java:551)
at softlogic.computers.softlogicsalesreward.DashboardActivity.onResume(DashboardActivity.java:65)
at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1287)
at android.app.Activity.performResume(Activity.java:7015)
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:4210)
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:4323)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3426)
at android.app.ActivityThread.access$1100(ActivityThread.java:229)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1821)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:7325)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
is there any other event where I can call this? or what I am doing wrong?

Your asyncTask must be like this.After see your code it may possible that You may forgot some method of AsyncTask.Compare with this example to better understand.
This is complete example of asyncTask:
private class AsyncTaskRunner extends AsyncTask<String, String, String> {
private String resp;
ProgressDialog progressDialog;
#Override
protected String doInBackground(String... params) {
publishProgress("Sleeping..."); // Calls onProgressUpdate()
try {
int time = Integer.parseInt(params[0])*1000;
Thread.sleep(time);
resp = "Slept for " + params[0] + " seconds";
} catch (InterruptedException e) {
e.printStackTrace();
resp = e.getMessage();
} catch (Exception e) {
e.printStackTrace();
resp = e.getMessage();
}
return resp;
}
#Override
protected void onPostExecute(String result) {
// execution of result of Long time consuming operation
progressDialog.dismiss();
finalResult.setText(result);
}
#Override
protected void onPreExecute() {
progressDialog = ProgressDialog.show(MainActivity.this,
"ProgressDialog",
"Wait for "+time.getText().toString()+ " seconds");
}
#Override
protected void onProgressUpdate(String... text) {
finalResult.setText(text[0]);
}
}
call like this:
new AsyncTaskRunner (this).execute();

you can use thread policy for this. It's work great.
Just add two line below setcontent.
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
.detectAll()
.penaltyLog()
.build();
StrictMode.setThreadPolicy(policy);

You Forget to call pDialog.dismiss();
in onPostExecute method of Async task

Read only the specific tag from RSS Feed

I'm trying to learn how to make RSS Reader for my android app by following this tutorial.
The feed is generated from a wordpress blog and I want to figure out a way to read by categories. It's currently reading the entire feed items but I'm trying to sort out specific categories from the list.
This is the Activity class to read the feed.
// Connected - Start parsing
new AsyncLoadXMLFeed().execute();
}
}
private void startLisActivity(RSSFeed feed) {
Bundle bundle = new Bundle();
bundle.putSerializable("feed", feed);
// launch List activity
Intent intent = new Intent(SplashActivity.this, GridActivity.class);
intent.putExtras(bundle);
startActivity(intent);
// kill this activity
finish();
}
private class AsyncLoadXMLFeed extends AsyncTask<Void, Void, Void> {
#Override
protected Void doInBackground(Void... params) {
// Obtain feed
DOMParser myParser = new DOMParser();
feed = myParser.parseXml(http://mywordpressblog.com/feed/);
if (feed != null && feed.getItemCount() > 0)
WriteFeed(feed);
return null;
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
startLisActivity(feed);
}
}
// Method to write the feed to the File
private void WriteFeed(RSSFeed data) {
FileOutputStream fOut = null;
ObjectOutputStream osw = null;
try {
fOut = openFileOutput(fileName, MODE_PRIVATE);
osw = new ObjectOutputStream(fOut);
osw.writeObject(data);
osw.flush();
}
catch (Exception e) {
e.printStackTrace();
}
finally {
try {
fOut.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
// Method to read the feed from the File
private RSSFeed ReadFeed(String fName) {
FileInputStream fIn = null;
ObjectInputStream isr = null;
RSSFeed _feed = null;
File feedFile = getBaseContext().getFileStreamPath(fileName);
if (!feedFile.exists())
return null;
try {
fIn = openFileInput(fName);
isr = new ObjectInputStream(fIn);
_feed = (RSSFeed) isr.readObject();
}
catch (Exception e) {
e.printStackTrace();
}
finally {
try {
fIn.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return _feed;
}

before adding the items to your list you can check like this:
if(item.getCategory().contains("categorytoshow")){
add it to the list because it contains the category you want
}
then add it to the list

Why is ical4j taking so long to build?

I am trying to parse a google calendar ical (.ics) file using ical4j in android. But its taking over 40 seconds to build the calendar from the input stream.
calendar = builder.build(fis);
The ical file is only 150KB in size.
Also, When I use the same code and run it in PC, the building of calendar takes place in less than a second.
I have also noticed huge amounts of Garbage Collection in the LogCat.
Can Any one help me?
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TextView = (TextView)findViewById(R.id.Hello_World);
new Download().execute();
}
final class Download extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute(){
TextView.setText("Downloading");
}
#Override
protected Void doInBackground(Void... arg0) {
try {
URL url = new URL(URL);
HttpURLConnection c = (HttpURLConnection) url.openConnection();
c.setRequestMethod("GET");
c.connect();
FileOutputStream fos = openFileOutput(fileName, MainActivity.MODE_PRIVATE);
InputStream is = c.getInputStream();
byte[] buffer = new byte[1024];
int length = 0;
while ((length = is.read(buffer)) != -1) {
fos.write(buffer, 0, length);
}
fos.close();
is.close();
} catch (IOException e) {
Log.d("log_tag", "Error: " + e);
}
return null;
}
#Override
protected void onPostExecute(Void Result) {
TextView.setText("Saved...Loading Data");
new Loadicaldata().execute();
}
}
final class Loadicaldata extends AsyncTask<Void, Void, Void> {
String Summary = null;
#Override
protected Void doInBackground(Void... arg0) {
FileInputStream fis = null;
try {
fis = openFileInput(fileName);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
CompatibilityHints.setHintEnabled(CompatibilityHints.KEY_RELAXED_UNFOLDING, true);
CompatibilityHints.setHintEnabled(CompatibilityHints.KEY_RELAXED_VALIDATION, true);
CalendarBuilder builder = new CalendarBuilder();
Calendar calendar = null;
try {
calendar = builder.build(fis);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ParserException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
b.append(calendar.getProperty("X-WR-CALNAME").getValue());
ComponentList events = calendar.getComponents(Component.VEVENT);
VEvent Event = (VEvent) events.get(0);
Summary = Event.getDescription().getValue();
/*
for (Object event : calendar.getComponents(Component.VEVENT)) {
if (((VEvent) event).getSummary() != null) {
b.append("\n\n");
b.append(((VEvent) event).getSummary().getValue());
b.append(": ");
b.append(((VEvent) event).getStartDate().getDate());
}
}
*/
return null;
}
#Override
protected void onPostExecute(Void Result) {
TextView.setText(Summary);
}
}
LogCat:
http://dl.dropbox.com/u/35866688/LogCat.txt
Also, I can safely rule out the possibility of IO error, as Calendar.load method takes that long as well.
This is the ical file if anyone is interested.
https://www.google.com/calendar/ical/m0es4hhj4g9d69ibak88tvoup0%40group.calendar.google.com/public/basic.ics

One possibility is that you are reading from an unbuffered input stream in the doInBackground method. If the CalendarBuilder.build(...) method reads one byte at a time, this will generate a lot of system calls, and slow things down significantly.
A second possibility is that the problem is caused by garbage collection. There's not a lot you can do about that, but increasing the heap size might might help. (One cause of excessive GC overheads is running with a heap that is close to full. The efficiency of GCs tail off badly if they are unable to reclaim much memory in each GC cycle ... )