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UknownHostException while trying to post to facebook

 java.net.UnknownHostException: Unable to resolve host "graph.facebook.com": No address associated with hostname
at java.net.InetAddress.lookupHostByName(InetAddress.java:400)
at java.net.InetAddress.getAllByNameImpl(InetAddress.java:242)
at java.net.InetAddress.getAllByName(InetAddress.java:220)
at libcore.net.http.HttpConnection.<init>(HttpConnection.java:71)
at libcore.net.http.HttpConnection.<init>(HttpConnection.java:50)
at libcore.net.http.HttpConnection$Address.connect(HttpConnection.java:351)
    at libcore.net.http.HttpConnectionPool.get(HttpConnectionPool.java:86)
at libcore.net.http.HttpConnection.connect(HttpConnection.java:128)
at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:308)
at libcore.net.http.HttpsURLConnectionImpl$HttpsEngine.makeSslConnection(HttpsURLConnectionImpl.java:460)
at libcore.net.http.HttpsURLConnectionImpl$HttpsEngine.connect(HttpsURLConnectionImpl.java:441)
at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:282)
at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:232)
at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:273)
at libcore.net.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:168)
at libcore.net.http.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:270)
    at com.facebook.android.Util.openUrl(Util.java:215)
at com.facebook.android.Facebook.request(Facebook.java:751)
at com.facebook.android.Facebook.request(Facebook.java:688)
at com.nammari.FinalActivity$1.onClick(FinalActivity.java:62)
at android.view.View.performClick(View.java:3511)
at android.view.View$PerformClick.run(View.java:14105)
at android.os.Handler.handleCallback(Handler.java:605)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4424)
    at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
at dalvik.system.NativeStart.main(Native Method)
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4 answers

In your manifest file, add this permission:

<uses-permission android:name="android.permission.INTERNET" />
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I think the answer of the Raghava Court to the following question will be useful. It describes three reasons why you will get this exception.

Error sending message to facebook wall in android 4.0.3

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. . 2 , , , , facebook android 4.0.3 .

, , , , .

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reset

I hope this work is for you:

  • Click "Start" = "Run", enter CMD, click "OK."
  • Copy and paste this into the command line:
  • netsh winsock reset directory
  • Press Enter
  • Then copy and paste this into:
  • netsh int ip reset reset.log
  • Press Enter.
  • After restarting the computer.

https://productforums.google.com/forum/#!topic/chrome/oCUYZsG8VJU

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