Develop Reference

Android can't reach URL using Volley library

Hi I write my app and have many problems but this is really strange.
All connections to mysql by php was working good. Today I everything was ok but suddenly i couldn't reach URL.
Here is the logcat:
05-18 19:06:00.310 21093-21353/com.example.dawid.logowanie I/System.out: AsyncTask #8 calls detatch()
05-18 19:06:00.310 21093-21353/com.example.dawid.logowanie W/System.err: org.apache.http.conn.HttpHostConnectException: Connection to http://192.168.1.20 refused
05-18 19:06:00.310 21093-21353/com.example.dawid.logowanie W/System.err: at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:248)
05-18 19:06:00.310 21093-21353/com.example.dawid.logowanie W/System.err: at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:172)
05-18 19:06:00.310 21093-21353/com.example.dawid.logowanie W/System.err: at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:130)
05-18 19:06:00.310 21093-21353/com.example.dawid.logowanie W/System.err: at org.apache.http.impl.client.DefaultRequestDirector.executeOriginal(DefaultRequestDirector.java:1337)
05-18 19:06:00.310 21093-21353/com.example.dawid.logowanie W/System.err: at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:705)
05-18 19:06:00.310 21093-21353/com.example.dawid.logowanie W/System.err: at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:579)
05-18 19:06:00.310 21093-21353/com.example.dawid.logowanie W/System.err: at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:503)
05-18 19:06:00.310 21093-21353/com.example.dawid.logowanie W/System.err: at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:481)
05-18 19:06:00.310 21093-21353/com.example.dawid.logowanie W/System.err: at com.example.dawid.logowanie.JSONParser.makeHttpRequest(JSONParser.java:51)
05-18 19:06:00.310 21093-21353/com.example.dawid.logowanie W/System.err: at com.example.dawid.logowanie.AddBookActivity$CreateNewProduct.doInBackground(AddBookActivity.java:197)
05-18 19:06:00.320 21093-21353/com.example.dawid.logowanie W/System.err: at com.example.dawid.logowanie.AddBookActivity$CreateNewProduct.doInBackground(AddBookActivity.java:156)
05-18 19:06:00.320 21093-21353/com.example.dawid.logowanie W/System.err: at android.os.AsyncTask$2.call(AsyncTask.java:295)
05-18 19:06:00.320 21093-21353/com.example.dawid.logowanie W/System.err: at java.util.concurrent.FutureTask.run(FutureTask.java:237)
05-18 19:06:00.320 21093-21353/com.example.dawid.logowanie W/System.err: at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
05-18 19:06:00.320 21093-21353/com.example.dawid.logowanie W/System.err: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
05-18 19:06:00.320 21093-21353/com.example.dawid.logowanie W/System.err: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
05-18 19:06:00.320 21093-21353/com.example.dawid.logowanie W/System.err: at java.lang.Thread.run(Thread.java:818)
05-18 19:06:00.320 21093-21353/com.example.dawid.logowanie W/System.err: Caused by: java.net.ConnectException: failed to connect to /192.168.1.20 (port 80): connect failed: ETIMEDOUT (Connection timed out)
05-18 19:06:00.330 21093-21353/com.example.dawid.logowanie W/System.err: at libcore.io.IoBridge.connect(IoBridge.java:124)
05-18 19:06:00.330 21093-21353/com.example.dawid.logowanie W/System.err: at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:183)
05-18 19:06:00.330 21093-21353/com.example.dawid.logowanie W/System.err: at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:452)
05-18 19:06:00.340 21093-21353/com.example.dawid.logowanie W/System.err: at java.net.Socket.connect(Socket.java:884)
05-18 19:06:00.340 21093-21353/com.example.dawid.logowanie W/System.err: at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:124)
05-18 19:06:00.340 21093-21353/com.example.dawid.logowanie W/System.err: at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:193)
05-18 19:06:00.340 21093-21353/com.example.dawid.logowanie W/System.err: ... 16 more
05-18 19:06:00.340 21093-21353/com.example.dawid.logowanie W/System.err: Caused by: android.system.ErrnoException: connect failed: ETIMEDOUT (Connection timed out)
05-18 19:06:00.340 21093-21353/com.example.dawid.logowanie W/System.err: at libcore.io.Posix.connect(Native Method)
05-18 19:06:00.340 21093-21353/com.example.dawid.logowanie W/System.err: at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:111)
05-18 19:06:00.340 21093-21353/com.example.dawid.logowanie W/System.err: at libcore.io.IoBridge.connectErrno(IoBridge.java:137)
05-18 19:06:00.340 21093-21353/com.example.dawid.logowanie W/System.err: at libcore.io.IoBridge.connect(IoBridge.java:122)
05-18 19:06:00.340 21093-21353/com.example.dawid.logowanie W/System.err: ... 21 more
In other cases pDialog shows I wait and wait and get nothing only:
05-18 19:10:05.850 27036-27036/com.example.dawid.logowanie E/RegisterActivity: Blad Rejestracji: null
05-18 19:10:05.900 27036-27036/com.example.dawid.logowanie D/ViewRootImpl: #3 mView = null
05-18 19:10:05.920 27036-27036/com.example.dawid.logowanie D/Volley: [1] Request.finish: 7625 ms: [ ] http://192.168.1.20/android_login_api/Check.php 0x676929da NORMAL 1
05-18 19:10:05.920 27036-27036/com.example.dawid.logowanie D/ViewRootImpl: #1 mView = android.widget.LinearLayout{4c07063 V.E...... ......I. 0,0-0,0 #102039d android:id/toast_layout_root}
05-18 19:10:05.930 27036-27036/com.example.dawid.logowanie E/ViewRootImpl: sendUserActionEvent() mView == null
Like I said earlier everything was working fine but suddenly stopped. I restarted my phone many times, I change phone and nothing. I did Invalidate Caches/Restart but still have the problem.

Solved! It was because of my home wifi network. I turned on hotspot on another phone and connect my laptop and phone to test and worked. I still don't understand how earlier everything was working on my home wifi and suddenly stopped.
Someone know how is it possible?

can't load images from url with Picasso

i'm using Picasso to download images into a listview in my android app.
it's working like a charm except when running on Kitkat environment.
My layout
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
>
<ImageView
android:id="#+id/articleimage"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="8dp"
android:paddingBottom="5dp"
android:adjustViewBounds="true"
android:scaleType="centerCrop"
android:layout_alignParentTop="true"
/>
</RelativeLayout>
My logs
08-11 06:30:19.406 28898-28898/com.s W/System.err: com.squareup.picasso.Downloader$ResponseException: 404 Not Found
08-11 06:30:19.406 28898-28898/com.s W/System.err: at com.squareup.picasso.UrlConnectionDownloader.load(UrlConnectionDownloader.java:96)
08-11 06:30:19.406 28898-28898/com.s W/System.err: at com.squareup.picasso.NetworkRequestHandler.load(NetworkRequestHandler.java:47)
08-11 06:30:19.406 28898-28898/com.s W/System.err: at com.squareup.picasso.BitmapHunter.hunt(BitmapHunter.java:206)
08-11 06:30:19.406 28898-28898/com.s W/System.err: at com.squareup.picasso.BitmapHunter.run(BitmapHunter.java:159)
08-11 06:30:19.406 28898-28898/com.s W/System.err: at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:422)
08-11 06:30:19.406 28898-28898/com.s W/System.err: at java.util.concurrent.FutureTask.run(FutureTask.java:237)
08-11 06:30:19.406 28898-28898/com.s W/System.err: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
08-11 06:30:19.406 28898-28898/com.s W/System.err: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
08-11 06:30:19.406 28898-28898/com.s W/System.err: at java.lang.Thread.run(Thread.java:841)
08-11 06:30:19.406 28898-28898/com.s W/System.err: at com.squareup.picasso.Utils$PicassoThread.run(Utils.java:411)
my config
compileSdkVersion 23
buildToolsVersion '23.0.0'
compile 'com.squareup.picasso:picasso:2.5.2'
compile 'com.android.support:appcompat-v7:23.0.0'
compile 'com.android.support:design:23.0.0'
using ImageLoader i get an error in downloading the images
http://url/uploads/Vous-êtes-cerveau-droit-ou-cerveau-gauche-300x160.jpg
08-15 10:05:09.042 1915-2474/com.s W/System.err: java.io.FileNotFoundException: http://url/uploads/Vous-êtes-cerveau-droit-ou-cerveau-gauche-300x160.jpg
08-15 10:05:09.042 1915-2474/com.s W/System.err: at com.android.okhttp.internal.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:186)
08-15 10:05:09.042 1915-2474/com.s W/System.err: at java.net.URL.openStream(URL.java:470)
08-15 10:05:09.042 1915-2474/com.s W/System.err: at com.s.ArticleActivity$DownloadImageTask.doInBackground(ArticleActivity.java:446)
08-15 10:05:09.042 1915-2474/com.s W/System.err: at com.s.ArticleActivity$DownloadImageTask.doInBackground(ArticleActivity.java:436)
08-15 10:05:09.042 1915-2474/com.s W/System.err: at android.os.AsyncTask$2.call(AsyncTask.java:288)
08-15 10:05:09.042 1915-2474/com.s W/System.err: at java.util.concurrent.FutureTask.run(FutureTask.java:237)
08-15 10:05:09.042 1915-2474/com.s W/System.err: at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
08-15 10:05:09.042 1915-2474/com.s W/System.err: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
08-15 10:05:09.042 1915-2474/com.s W/System.err: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
08-15 10:05:09.042 1915-2474/com.s W/System.err: at java.lang.Thread.run(Thread.java:841)

Android N java.security.cert.CertPathValidatorException: Trust anchor for certification path not found

In my application i use a self signed certificate to connect over https. The application works perfectly fine when the compilesdk is set to < 24, however when the compilesdk is set to 24 my application fails to connect to the server over https and throws the following exception:
07-27 14:35:52.927 11424-11956/com.test.Push W/System.err: javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
07-27 14:35:52.927 11424-11956/com.test.Push W/System.err: at com.android.org.conscrypt.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:361)
07-27 14:35:52.927 11424-11956/com.test.Push W/System.err: at com.squareup.okhttp.internal.io.RealConnection.connectTls(RealConnection.java:192)
07-27 14:35:52.927 11424-11956/com.test.Push W/System.err: at com.squareup.okhttp.internal.io.RealConnection.connectSocket(RealConnection.java:149)
07-27 14:35:52.927 11424-11956/com.test.Push W/System.err: at com.squareup.okhttp.internal.io.RealConnection.connect(RealConnection.java:112)
07-27 14:35:52.927 11424-11956/com.test.Push W/System.err: at com.squareup.okhttp.internal.http.StreamAllocation.findConnection(StreamAllocation.java:184)
07-27 14:35:52.927 11424-11956/com.test.Push W/System.err: at com.squareup.okhttp.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:126)
07-27 14:35:52.927 11424-11956/com.test.Push W/System.err: at com.squareup.okhttp.internal.http.StreamAllocation.newStream(StreamAllocation.java:95)
07-27 14:35:52.927 11424-11956/com.test.Push W/System.err: at com.squareup.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:281)
07-27 14:35:52.927 11424-11956/com.test.Push W/System.err: at com.squareup.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:224)
07-27 14:35:52.927 11424-11956/com.test.Push W/System.err: at com.squareup.okhttp.Call.getResponse(Call.java:286)
07-27 14:35:52.927 11424-11956/com.test.Push W/System.err: at com.squareup.okhttp.Call$ApplicationInterceptorChain.proceed(Call.java:243)
07-27 14:35:52.927 11424-11956/com.test.Push W/System.err: at com.worklight.wlclient.CertificatePinningInterceptor.intercept(CertificatePinningInterceptor.java:20)
07-27 14:35:52.927 11424-11956/com.test.Push W/System.err: at com.squareup.okhttp.Call$ApplicationInterceptorChain.proceed(Call.java:232)
07-27 14:35:52.927 11424-11956/com.test.Push W/System.err: at com.worklight.wlclient.OkHttpInterceptor.intercept(OkHttpInterceptor.java:145)
07-27 14:35:52.927 11424-11956/com.test.Push W/System.err: at com.squareup.okhttp.Call$ApplicationInterceptorChain.proceed(Call.java:232)
07-27 14:35:52.927 11424-11956/com.test.Push W/System.err: at com.squareup.okhttp.Call.getResponseWithInterceptorChain(Call.java:205)
07-27 14:35:52.927 11424-11956/com.test.Push W/System.err: at com.squareup.okhttp.Call.execute(Call.java:80)
07-27 14:35:52.927 11424-11956/com.test.Push W/System.err: at com.worklight.wlclient.WLRequestSender.run(WLRequestSender.java:49)
07-27 14:35:52.927 11424-11956/com.test.Push W/System.err: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
07-27 14:35:52.927 11424-11956/com.test.Push W/System.err: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
07-27 14:35:52.928 11424-11956/com.test.Push W/System.err: at java.lang.Thread.run(Thread.java:761)
07-27 14:35:52.928 11424-11956/com.test.Push W/System.err: Caused by: java.security.cert.CertificateException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
07-27 14:35:52.928 11424-11956/com.test.Push W/System.err: at com.android.org.conscrypt.TrustManagerImpl.checkTrustedRecursive(TrustManagerImpl.java:549)
07-27 14:35:52.928 11424-11956/com.test.Push W/System.err: at com.android.org.conscrypt.TrustManagerImpl.checkTrusted(TrustManagerImpl.java:401)
07-27 14:35:52.928 11424-11956/com.test.Push W/System.err: at com.android.org.conscrypt.TrustManagerImpl.checkTrusted(TrustManagerImpl.java:375)
07-27 14:35:52.928 11424-11956/com.test.Push W/System.err: at com.android.org.conscrypt.TrustManagerImpl.getTrustedChainForServer(TrustManagerImpl.java:304)
07-27 14:35:52.928 11424-11956/com.test.Push W/System.err: at android.security.net.config.NetworkSecurityTrustManager.checkServerTrusted(NetworkSecurityTrustManager.java:94)
07-27 14:35:52.928 11424-11956/com.test.Push W/System.err: at android.security.net.config.RootTrustManager.checkServerTrusted(RootTrustManager.java:88)
07-27 14:35:52.928 11424-11956/com.test.Push W/System.err: at com.android.org.conscrypt.Platform.checkServerTrusted(Platform.java:178)
07-27 14:35:52.928 11424-11956/com.test.Push W/System.err: at com.android.org.conscrypt.OpenSSLSocketImpl.verifyCertificateChain(OpenSSLSocketImpl.java:596)
07-27 14:35:52.929 11424-11956/com.test.Push W/System.err: at com.android.org.conscrypt.NativeCrypto.SSL_do_handshake(Native Method)
07-27 14:35:52.929 11424-11956/com.test.Push W/System.err: at com.android.org.conscrypt.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:357)
07-27 14:35:52.929 11424-11956/com.test.Push W/System.err: ... 20 more
07-27 14:35:52.929 11424-11956/com.test.Push W/System.err: Caused by: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
07-27 14:35:52.929 11424-11956/com.test.Push W/System.err: ... 30 more
I followed the steps mentioned here https://developer.android.com/preview/features/security-config.html, however my app still fails to connect to the server over https. My network_security_config.xml is as below:
<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
<domain-config>
<domain includeSubdomains="true">test.abc.com</domain>
<trust-anchors>
<certificates src="#raw/ca_norton"/>
</trust-anchors>
</domain-config>
</network-security-config>
In my AndroidManifest.xml included the following under the application tag
<meta-data android:name="android.security.net.config"
android:resource="#xml/network_security_config" />
ca_norton.crt is also copied into the raw folder. Am i missing something here? Thanks in advance.

The correct way to specify a Network Security Config in your manifest is:
<?xml version="1.0" encoding="utf-8"?>
<manifest ... >
<application android:networkSecurityConfig="#xml/network_security_config"
... >
...
</application>
</manifest>
See https://developer.android.com/preview/features/security-config.html#manifest. The meta-data approach was only present in the early N previews and is no longer supported.

retrofit.RetrofitError: sendto failed: EPIPE (Broken pipe)

I'm using Retrofit 1.9.0 for my RESTclient in android, It get error like i post below:
retrofit.RetrofitError: sendto failed: EPIPE (Broken pipe)
04-03 20:18:51.995 8634-8634/up.tech.opener W/System.err: at retrofit.RestAdapter$RestHandler.invokeRequest(RestAdapter.java:395)
04-03 20:18:51.995 8634-8634/up.tech.opener W/System.err: at retrofit.RestAdapter$RestHandler.access$100(RestAdapter.java:220)
04-03 20:18:51.995 8634-8634/up.tech.opener W/System.err: at retrofit.RestAdapter$RestHandler$2.obtainResponse(RestAdapter.java:278)
04-03 20:18:51.995 8634-8634/up.tech.opener W/System.err: at retrofit.CallbackRunnable.run(CallbackRunnable.java:42)
04-03 20:18:51.995 8634-8634/up.tech.opener W/System.err: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
04-03 20:18:51.996 8634-8634/up.tech.opener W/System.err: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
04-03 20:18:51.996 8634-8634/up.tech.opener W/System.err: at retrofit.Platform$Android$2$1.run(Platform.java:142)
04-03 20:18:51.996 8634-8634/up.tech.opener W/System.err: at java.lang.Thread.run(Thread.java:838)
04-03 20:18:51.996 8634-8634/up.tech.opener W/System.err: Caused by: java.net.SocketException: sendto failed: EPIPE (Broken pipe)
04-03 20:18:51.997 8634-8634/up.tech.opener W/System.err: at libcore.io.IoBridge.maybeThrowAfterSendto(IoBridge.java:550)
04-03 20:18:51.997 8634-8634/up.tech.opener W/System.err: at libcore.io.IoBridge.sendto(IoBridge.java:519)
04-03 20:18:51.998 8634-8634/up.tech.opener W/System.err: at java.net.PlainSocketImpl.write(PlainSocketImpl.java:511)
04-03 20:18:51.998 8634-8634/up.tech.opener W/System.err: at java.net.PlainSocketImpl.access$100(PlainSocketImpl.java:46)
04-03 20:18:51.998 8634-8634/up.tech.opener W/System.err: at java.net.PlainSocketImpl$PlainSocketOutputStream.write(PlainSocketImpl.java:269)
04-03 20:18:51.998 8634-8634/up.tech.opener W/System.err: at java.io.OutputStream.write(OutputStream.java:82)
04-03 20:18:51.998 8634-8634/up.tech.opener W/System.err: at libcore.net.http.HttpEngine.writeRequestHeaders(HttpEngine.java:659)
04-03 20:18:51.998 8634-8634/up.tech.opener W/System.err: at libcore.net.http.HttpEngine.readResponse(HttpEngine.java:808)
04-03 20:18:51.998 8634-8634/up.tech.opener W/System.err: at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:293)
04-03 20:18:51.998 8634-8634/up.tech.opener W/System.err: at libcore.net.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:505)
04-03 20:18:51.998 8634-8634/up.tech.opener W/System.err: at retrofit.client.UrlConnectionClient.readResponse(UrlConnectionClient.java:73)
04-03 20:18:51.999 8634-8634/up.tech.opener W/System.err: at retrofit.client.UrlConnectionClient.execute(UrlConnectionClient.java:38)
04-03 20:18:51.999 8634-8634/up.tech.opener W/System.err: at retrofit.RestAdapter$RestHandler.invokeRequest(RestAdapter.java:326)
04-03 20:18:51.999 8634-8634/up.tech.opener W/System.err: ... 7 more
Can anyone know how to fixing this please?

Just to make sure that your configuration is correct
check if you have added all the required permissions to your AndroidManifest.xml (EPIPE happens often as a result of missing permissions)

Script might be getting stuck somewhere in the code, hence not posting the response meanwhile server would have closed the socket.
Increasing timeout values
okHttpClient = new OkHttpClient();
okHttpClient.setReadTimeout(60, TimeUnit.SECONDS);
okHttpClient.setConnectTimeout(60, TimeUnit.SECONDS);
Add this on your gradle
compile 'com.squareup.okhttp:okhttp:2.0.0'
Compile 'come.scrap.okhttp:okhttp-urlconnection:2.0.0'

if not set port in retrofit helper , like this : http://172.51.65.62
retforit try to connect to : http://172.51.65.62:80
now if used any port else port number 80 , you will get this error
for fix this error change ip or address like : http://172.51.65.62:8256

Android open failed: EACCES (Permission denied) in implementing PDF Reader library

I am implementing this library for PDF reader. I've implemented the code as explained in the link. but when I am running I am getting following exception. here's the logcat:
10:43:56.429 32577-32577/com.example.fahad.testpdfreaderlibrary I/PDFVIEWER: Intent { cmp=com.example.fahad.testpdfreaderlibrary/.TestPDFActivity (has extras) }
11-05 10:43:56.431 32577-32577/com.example.fahad.testpdfreaderlibrary I/PDFVIEWER: ST='file '/storage/emulated/0/pdf.pdf' has 433994 bytes'
11-05 10:43:56.432 32577-32577/com.example.fahad.testpdfreaderlibrary W/System.err: java.io.FileNotFoundException: /storage/emulated/0/pdf.pdf: open failed: EACCES (Permission denied)
11-05 10:43:56.432 32577-32577/com.example.fahad.testpdfreaderlibrary W/System.err: at libcore.io.IoBridge.open(IoBridge.java:452)
11-05 10:43:56.432 32577-32577/com.example.fahad.testpdfreaderlibrary W/System.err: at java.io.RandomAccessFile.<init>(RandomAccessFile.java:117)
11-05 10:43:56.432 32577-32577/com.example.fahad.testpdfreaderlibrary W/System.err: at net.sf.andpdf.pdfviewer.PdfViewerActivity.openFile(PdfViewerActivity.java:841)
11-05 10:43:56.432 32577-32577/com.example.fahad.testpdfreaderlibrary W/System.err: at net.sf.andpdf.pdfviewer.PdfViewerActivity.parsePDF(PdfViewerActivity.java:815)
11-05 10:43:56.432 32577-32577/com.example.fahad.testpdfreaderlibrary W/System.err: at net.sf.andpdf.pdfviewer.PdfViewerActivity.setContent(PdfViewerActivity.java:221)
11-05 10:43:56.432 32577-32577/com.example.fahad.testpdfreaderlibrary W/System.err: at net.sf.andpdf.pdfviewer.PdfViewerActivity.onCreate(PdfViewerActivity.java:212)
11-05 10:43:56.433 32577-32577/com.example.fahad.testpdfreaderlibrary W/System.err: at android.app.Activity.performCreate(Activity.java:6237)
11-05 10:43:56.433 32577-32577/com.example.fahad.testpdfreaderlibrary W/System.err: at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
11-05 10:43:56.433 32577-32577/com.example.fahad.testpdfreaderlibrary W/System.err: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
11-05 10:43:56.433 32577-32577/com.example.fahad.testpdfreaderlibrary W/System.err: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
11-05 10:43:56.433 32577-32577/com.example.fahad.testpdfreaderlibrary W/System.err: at android.app.ActivityThread.-wrap11(ActivityThread.java)
11-05 10:43:56.433 32577-32577/com.example.fahad.testpdfreaderlibrary W/System.err: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
11-05 10:43:56.433 32577-32577/com.example.fahad.testpdfreaderlibrary W/System.err: at android.os.Handler.dispatchMessage(Handler.java:102)
11-05 10:43:56.433 32577-32577/com.example.fahad.testpdfreaderlibrary W/System.err: at android.os.Looper.loop(Looper.java:148)
11-05 10:43:56.433 32577-32577/com.example.fahad.testpdfreaderlibrary W/System.err: at android.app.ActivityThread.main(ActivityThread.java:5417)
11-05 10:43:56.434 32577-32577/com.example.fahad.testpdfreaderlibrary W/System.err: at java.lang.reflect.Method.invoke(Native Method)
11-05 10:43:56.434 32577-32577/com.example.fahad.testpdfreaderlibrary W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
11-05 10:43:56.434 32577-32577/com.example.fahad.testpdfreaderlibrary W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
11-05 10:43:56.434 32577-32577/com.example.fahad.testpdfreaderlibrary W/System.err: Caused by: android.system.ErrnoException: open failed: EACCES (Permission denied)
11-05 10:43:56.434 32577-32577/com.example.fahad.testpdfreaderlibrary W/System.err: at libcore.io.Posix.open(Native Method)
11-05 10:43:56.434 32577-32577/com.example.fahad.testpdfreaderlibrary W/System.err: at libcore.io.BlockGuardOs.open(BlockGuardOs.java:186)
11-05 10:43:56.434 32577-32577/com.example.fahad.testpdfreaderlibrary W/System.err: at libcore.io.IoBridge.open(IoBridge.java:438)
11-05 10:43:56.434 32577-32577/com.example.fahad.testpdfreaderlibrary W/System.err: ... 17 more
also I've added in my AndroidManifest.xml following lines:
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
but still getting the same exception

Simple solution: set your target SDK back to 22
Clean Solution: Request the Runtime Permissions
Check this out for more informations.