title: Android - .getInputStream() keeps on crashing
body: <p>I'm really new to Android, java and HTML. So I'm pretty much stuffed.
  I'm just trying to get data from a URL with an android application.
  I tried the following code in java and it works fine, so I really stuck with what is wrong with it.
  I tried googling and used different options, such as setting connection time </p>
  
  <pre><code>    URL url = new URL("http://www.google.com/");
      HttpURLConnection conn = (HttpURLConnection) url.openConnection();
      conn.setDoInput(true);
      conn.setDoOutput(true);
      try {
          input = new InputStreamReader(conn.getInputStream());
          in =new BufferedReader(input);
      }
  </code></pre>
  
  <p>I tried a lot of different versions, such as adding a bunch of stuff like:
          urlConnection.setRequestProperty("Connection", "keep-alive");
          urlConnection.setRequestProperty("ConnectionTimeout", "12000");
          urlConnection.setRequestProperty("Content-Length", "" + request.length);</p>
  
  <p>I think the following post has a similar problem:
  <a href="https://stackoverflow.com/questions/10057942/ioexception-with-urlconnection-and-getinputstream/17413587#17413587">IOException with URLConnection and getInputStream</a></p>
  
  <p>I didn't get an IOException (well at least I don't think so), but I got this (and a whole bunch of others)</p>
  
  <p>07-01 23:18:33.870: E/AndroidRuntime(30713): java.lang.IllegalStateException: Could not execute method of the activity</p>
  
  <p>And yes, I did add the permission to INTERNET and ACCESS_NETWORK_STATE</p>
  
  <pre><code>    &lt;uses-permission android:name="android.permission.INTERNET" /&gt;
      &lt;uses-permission android:name = "android.permission.ACCESS_NETWORK_STATE"/&gt;
  </code></pre>
  
  <p>I'm using Eclipse and running on my Android HTC One X.
  Please help. Thanks in advance!</p>
  
  <p>Here's the stack trace after I added the AsyncTask:</p>
  
  <pre><code>07-02 00:02:34.775: W/IInputConnectionWrapper(3799): getExtractedText on inactive InputConnection
  07-02 00:02:34.785: W/IInputConnectionWrapper(3799): getTextBeforeCursor on inactive InputConnection
  07-02 00:02:34.785: W/IInputConnectionWrapper(3799): getSelectedText on inactive InputConnection
  07-02 00:02:34.785: W/IInputConnectionWrapper(3799): getTextAfterCursor on inactive InputConnection
  07-02 00:02:34.790: W/IInputConnectionWrapper(3799): getExtractedText on inactive InputConnection
  07-02 00:02:34.795: W/IInputConnectionWrapper(3799): getTextBeforeCursor on inactive InputConnection
  07-02 00:02:34.795: W/IInputConnectionWrapper(3799): getExtractedText on inactive InputConnection
  07-02 00:02:34.795: W/IInputConnectionWrapper(3799): getTextBeforeCursor on inactive InputConnection
  07-02 00:02:34.800: W/IInputConnectionWrapper(3799): getSelectedText on inactive InputConnection
  07-02 00:02:34.800: W/IInputConnectionWrapper(3799): getTextAfterCursor on inactive InputConnection
  07-02 00:02:34.800: W/IInputConnectionWrapper(3799): getExtractedText on inactive InputConnection
  07-02 00:02:34.805: W/IInputConnectionWrapper(3799): getTextBeforeCursor on inactive InputConnection
  07-02 00:02:34.805: W/IInputConnectionWrapper(3799): getSelectedText on inactive InputConnection
  07-02 00:02:34.810: W/IInputConnectionWrapper(3799): getTextAfterCursor on inactive InputConnection
  07-02 00:02:34.810: W/IInputConnectionWrapper(3799): beginBatchEdit on inactive InputConnection
  07-02 00:02:34.815: W/IInputConnectionWrapper(3799): getExtractedText on inactive InputConnection
  07-02 00:02:34.815: W/IInputConnectionWrapper(3799): getTextBeforeCursor on inactive InputConnection
  07-02 00:02:34.820: W/IInputConnectionWrapper(3799): getSelectedText on inactive InputConnection
  07-02 00:02:34.820: W/IInputConnectionWrapper(3799): getTextAfterCursor on inactive InputConnection
  07-02 00:02:34.830: W/IInputConnectionWrapper(3799): getExtractedText on inactive InputConnection
  07-02 00:02:34.830: W/IInputConnectionWrapper(3799): getTextBeforeCursor on inactive InputConnection
  07-02 00:02:34.830: W/IInputConnectionWrapper(3799): getSelectedText on inactive InputConnection
  07-02 00:02:34.835: W/IInputConnectionWrapper(3799): getTextAfterCursor on inactive InputConnection
  07-02 00:02:34.845: W/IInputConnectionWrapper(3799): endBatchEdit on inactive InputConnection
  07-02 00:02:34.845: W/IInputConnectionWrapper(3799): getExtractedText on inactive InputConnection
  07-02 00:02:34.845: W/IInputConnectionWrapper(3799): getTextBeforeCursor on inactive InputConnection
  07-02 00:02:34.850: W/IInputConnectionWrapper(3799): getSelectedText on inactive InputConnection
  07-02 00:02:34.850: W/IInputConnectionWrapper(3799): getTextAfterCursor on inactive InputConnection
  07-02 00:02:34.855: W/IInputConnectionWrapper(3799): beginBatchEdit on inactive InputConnection
  07-02 00:02:34.855: W/IInputConnectionWrapper(3799): setComposingRegion on inactive InputConnection
  07-02 00:02:34.855: W/IInputConnectionWrapper(3799): endBatchEdit on inactive InputConnection
  07-02 00:02:34.865: W/IInputConnectionWrapper(3799): getExtractedText on inactive InputConnection
  07-02 00:02:34.865: W/IInputConnectionWrapper(3799): getTextBeforeCursor on inactive InputConnection
  07-02 00:02:34.870: W/IInputConnectionWrapper(3799): getSelectedText on inactive InputConnection
  07-02 00:02:34.870: W/IInputConnectionWrapper(3799): getTextAfterCursor on inactive InputConnection
  07-02 00:05:06.105: W/LoadedApk(5867): pakageInfo is null! try again
  07-02 00:05:06.105: W/LoadedApk(5867): packageInfo still null!
  07-02 00:05:06.110: D/LoadedApk(5867): dalvik.system.VMStack.getThreadStackTrace(Native Method)
  07-02 00:05:06.110: D/LoadedApk(5867): java.lang.Thread.getStackTrace(Thread.java:599)
  07-02 00:05:06.110: D/LoadedApk(5867): android.app.LoadedApk.initializeJavaContextClassLoader(LoadedApk.java:388)
  07-02 00:05:06.110: D/LoadedApk(5867): android.app.LoadedApk.getClassLoader(LoadedApk.java:330)
  07-02 00:05:06.110: D/LoadedApk(5867): android.app.LoadedApk.makeApplication(LoadedApk.java:535)
  07-02 00:05:06.110: D/LoadedApk(5867): android.app.ActivityThread.handleBindApplication(ActivityThread.java:4803)
  07-02 00:05:06.110: D/LoadedApk(5867): android.app.ActivityThread.access$1300(ActivityThread.java:151)
  07-02 00:05:06.110: D/LoadedApk(5867): android.app.ActivityThread$H.handleMessage(ActivityThread.java:1401)
  07-02 00:05:06.110: D/LoadedApk(5867): android.os.Handler.dispatchMessage(Handler.java:99)
  07-02 00:05:06.110: D/LoadedApk(5867): android.os.Looper.loop(Looper.java:155)
  07-02 00:05:06.110: D/LoadedApk(5867): android.app.ActivityThread.main(ActivityThread.java:5493)
  07-02 00:05:06.110: D/LoadedApk(5867): java.lang.reflect.Method.invokeNative(Native Method)
  07-02 00:05:06.110: D/LoadedApk(5867): java.lang.reflect.Method.invoke(Method.java:511)
  07-02 00:05:06.110: D/LoadedApk(5867): com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1028)
  07-02 00:05:06.110: D/LoadedApk(5867): com.android.internal.os.ZygoteInit.main(ZygoteInit.java:795)
  07-02 00:05:06.110: D/LoadedApk(5867): dalvik.system.NativeStart.main(Native Method)
  07-02 00:05:09.565: I/dalvikvm-heap(6053): Grow heap (frag case) to 5.448MB for 1705652-byte allocation
  07-02 00:05:09.810: I/dalvikvm-heap(6053): Grow heap (frag case) to 8.340MB for 3034580-byte allocation
  07-02 00:05:09.905: I/MediaPlayer(6053): setLPAflag() in
  07-02 00:05:09.905: I/MediaPlayer(6053): mContext is null, can't getMirrorDisplayStatus!!!
  07-02 00:05:09.905: I/MediaPlayer(6053): setLPAflag() out
  07-02 00:05:09.910: W/MediaPlayer(6053): info/warning (1, 902)
  07-02 00:05:09.915: D/MediaPlayer(6053): [DLNA]contentType = 902
  07-02 00:05:09.915: D/MediaPlayer(6053): doStart() in
  07-02 00:05:09.915: D/MediaPlayer(6053): getIntParameter = 902
  07-02 00:05:10.190: D/MediaPlayer(6053): Mediaplayer receives message, message type: 200
  07-02 00:05:10.190: I/MediaPlayer(6053): Info (1,902)
  07-02 00:05:10.190: D/MediaPlayer(6053): Mediaplayer receives message, message type: 5
  07-02 00:05:10.190: D/MediaPlayer(6053): Mediaplayer receives message, message type: 1
  07-02 00:05:10.295: E/(6053): file /data/data/com.nvidia.NvCPLSvc/files/driverlist.txt: not found!
  07-02 00:05:10.295: I/(6053): Attempting to load EGL implementation /system/lib//egl/libEGL_tegra_impl
  07-02 00:05:10.485: I/(6053): Loaded EGL implementation /system/lib//egl/libEGL_tegra_impl
  07-02 00:05:10.595: I/(6053): Loading GLESv2 implementation /system/lib//egl/libGLESv2_tegra_impl
  07-02 00:05:11.080: W/IInputConnectionWrapper(6053): getExtractedText on inactive InputConnection
  07-02 00:05:11.140: W/IInputConnectionWrapper(6053): getTextBeforeCursor on inactive InputConnection
  07-02 00:05:11.430: I/dalvikvm-heap(6053): Grow heap (frag case) to 10.851MB for 2731536-byte allocation
  07-02 00:05:11.830: I/MediaPlayer(6053): setLPAflag() in
  07-02 00:05:11.830: I/MediaPlayer(6053): mContext is null, can't getMirrorDisplayStatus!!!
  07-02 00:05:11.830: I/MediaPlayer(6053): setLPAflag() out
  07-02 00:05:11.845: W/MediaPlayer(6053): info/warning (1, 902)
  07-02 00:05:11.870: W/IInputConnectionWrapper(6053): getSelectedText on inactive InputConnection
  07-02 00:05:11.875: D/MediaPlayer(6053): Mediaplayer receives message, message type: 200
  07-02 00:05:11.875: I/MediaPlayer(6053): Info (1,902)
  07-02 00:05:11.875: D/MediaPlayer(6053): Mediaplayer receives message, message type: 5
  07-02 00:05:11.875: D/MediaPlayer(6053): Mediaplayer receives message, message type: 1
  07-02 00:05:12.025: W/IInputConnectionWrapper(6053): getTextAfterCursor on inactive InputConnection
  07-02 00:05:12.600: D/MediaPlayer(6053): [DLNA]contentType = 902
  07-02 00:05:12.600: D/MediaPlayer(6053): doStart() in
  07-02 00:05:12.600: D/MediaPlayer(6053): getIntParameter = 902
  07-02 00:05:12.645: W/IInputConnectionWrapper(6053): getExtractedText on inactive InputConnection
  07-02 00:05:12.940: W/IInputConnectionWrapper(6053): getExtractedText on inactive InputConnection
  07-02 00:05:12.945: W/IInputConnectionWrapper(6053): getTextBeforeCursor on inactive InputConnection
  07-02 00:05:12.950: W/IInputConnectionWrapper(6053): getSelectedText on inactive InputConnection
  07-02 00:05:12.955: W/IInputConnectionWrapper(6053): getTextAfterCursor on inactive InputConnection
  07-02 00:05:12.960: W/IInputConnectionWrapper(6053): getExtractedText on inactive InputConnection
  07-02 00:05:12.965: W/IInputConnectionWrapper(6053): getTextBeforeCursor on inactive InputConnection
  07-02 00:05:12.980: W/IInputConnectionWrapper(6053): getExtractedText on inactive InputConnection
  07-02 00:05:12.980: W/IInputConnectionWrapper(6053): getTextBeforeCursor on inactive InputConnection
  07-02 00:05:12.985: W/IInputConnectionWrapper(6053): getSelectedText on inactive InputConnection
  07-02 00:05:12.985: W/IInputConnectionWrapper(6053): getTextAfterCursor on inactive InputConnection
  07-02 00:05:12.995: W/IInputConnectionWrapper(6053): getExtractedText on inactive InputConnection
  07-02 00:05:13.000: W/IInputConnectionWrapper(6053): getTextBeforeCursor on inactive InputConnection
  07-02 00:05:13.000: W/IInputConnectionWrapper(6053): getSelectedText on inactive InputConnection
  07-02 00:05:13.005: W/IInputConnectionWrapper(6053): getTextAfterCursor on inactive InputConnection
  07-02 00:05:13.005: W/IInputConnectionWrapper(6053): getExtractedText on inactive InputConnection
  07-02 00:05:13.010: W/IInputConnectionWrapper(6053): getTextBeforeCursor on inactive InputConnection
  07-02 00:05:13.010: W/IInputConnectionWrapper(6053): getSelectedText on inactive InputConnection
  07-02 00:05:13.010: W/IInputConnectionWrapper(6053): getTextAfterCursor on inactive InputConnection
  07-02 00:05:13.015: W/IInputConnectionWrapper(6053): getExtractedText on inactive InputConnection
  07-02 00:05:13.015: W/IInputConnectionWrapper(6053): getTextBeforeCursor on inactive InputConnection
  07-02 00:05:13.015: W/IInputConnectionWrapper(6053): getSelectedText on inactive InputConnection
  07-02 00:05:13.015: W/IInputConnectionWrapper(6053): getTextAfterCursor on inactive InputConnection
  07-02 00:05:13.015: W/IInputConnectionWrapper(6053): beginBatchEdit on inactive InputConnection
  07-02 00:05:13.020: W/IInputConnectionWrapper(6053): endBatchEdit on inactive InputConnection
  07-02 00:05:13.020: W/IInputConnectionWrapper(6053): getExtractedText on inactive InputConnection
  07-02 00:05:13.020: W/IInputConnectionWrapper(6053): getTextBeforeCursor on inactive InputConnection
  07-02 00:05:13.020: W/IInputConnectionWrapper(6053): getSelectedText on inactive InputConnection
  07-02 00:05:13.020: W/IInputConnectionWrapper(6053): getTextAfterCursor on inactive InputConnection
  07-02 00:05:13.025: W/IInputConnectionWrapper(6053): beginBatchEdit on inactive InputConnection
  07-02 00:05:13.025: W/IInputConnectionWrapper(6053): setComposingRegion on inactive InputConnection
  07-02 00:05:13.025: W/IInputConnectionWrapper(6053): endBatchEdit on inactive InputConnection
  07-02 00:05:13.025: W/IInputConnectionWrapper(6053): getExtractedText on inactive InputConnection
  07-02 00:05:13.025: W/IInputConnectionWrapper(6053): getTextBeforeCursor on inactive InputConnection
  07-02 00:05:13.025: W/IInputConnectionWrapper(6053): getSelectedText on inactive InputConnection
  07-02 00:05:13.025: W/IInputConnectionWrapper(6053): getTextAfterCursor on inactive InputConnection
  07-02 00:05:13.165: E/SpannableStringBuilder(6053): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
  07-02 00:05:13.165: E/SpannableStringBuilder(6053): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
  07-02 00:05:13.295: D/MediaPlayer(6053): Mediaplayer receives message, message type: 2
  07-02 00:05:16.440: W/System.err(6053): java.io.FileNotFoundException: http://www.google.com/
  07-02 00:05:16.445: W/System.err(6053):     at libcore.net.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:177)
  07-02 00:05:16.445: W/System.err(6053):     at aiti.mit.edu.sa.wu.calculator.MyAsynTask.doInBackground(ActivityHi.java:139)
  07-02 00:05:16.445: W/System.err(6053):     at aiti.mit.edu.sa.wu.calculator.MyAsynTask.doInBackground(ActivityHi.java:1)
  07-02 00:05:16.445: W/System.err(6053):     at android.os.AsyncTask$2.call(AsyncTask.java:287)
  07-02 00:05:16.445: W/System.err(6053):     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
  07-02 00:05:16.445: W/System.err(6053):     at java.util.concurrent.FutureTask.run(FutureTask.java:137)
  07-02 00:05:16.445: W/System.err(6053):     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
  07-02 00:05:16.445: W/System.err(6053):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
  07-02 00:05:16.450: W/System.err(6053):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
  07-02 00:05:16.450: W/System.err(6053):     at java.lang.Thread.run(Thread.java:864)
  07-02 00:05:16.450: W/dalvikvm(6053): threadid=12: thread exiting with uncaught exception (group=0x40c392d0)
  07-02 00:05:16.460: E/AndroidRuntime(6053): FATAL EXCEPTION: AsyncTask #1
  07-02 00:05:16.460: E/AndroidRuntime(6053): java.lang.RuntimeException: An error occured while executing doInBackground()
  07-02 00:05:16.460: E/AndroidRuntime(6053):     at android.os.AsyncTask$3.done(AsyncTask.java:299)
  07-02 00:05:16.460: E/AndroidRuntime(6053):     at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
  07-02 00:05:16.460: E/AndroidRuntime(6053):     at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
  07-02 00:05:16.460: E/AndroidRuntime(6053):     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
  07-02 00:05:16.460: E/AndroidRuntime(6053):     at java.util.concurrent.FutureTask.run(FutureTask.java:137)
  07-02 00:05:16.460: E/AndroidRuntime(6053):     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
  07-02 00:05:16.460: E/AndroidRuntime(6053):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
  07-02 00:05:16.460: E/AndroidRuntime(6053):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
  07-02 00:05:16.460: E/AndroidRuntime(6053):     at java.lang.Thread.run(Thread.java:864)
  07-02 00:05:16.460: E/AndroidRuntime(6053): Caused by: java.lang.NullPointerException
  07-02 00:05:16.460: E/AndroidRuntime(6053):     at aiti.mit.edu.sa.wu.calculator.MyAsynTask.doInBackground(ActivityHi.java:153)
  07-02 00:05:16.460: E/AndroidRuntime(6053):     at aiti.mit.edu.sa.wu.calculator.MyAsynTask.doInBackground(ActivityHi.java:1)
  07-02 00:05:16.460: E/AndroidRuntime(6053):     at android.os.AsyncTask$2.call(AsyncTask.java:287)
  07-02 00:05:16.460: E/AndroidRuntime(6053):     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
  07-02 00:05:16.460: E/AndroidRuntime(6053):     ... 5 more
  07-02 00:05:19.770: D/Process(6053): killProcess, pid=6053
  07-02 00:05:19.800: D/Process(6053): dalvik.system.VMStack.getThreadStackTrace(Native Method)
  07-02 00:05:19.800: D/Process(6053): java.lang.Thread.getStackTrace(Thread.java:599)
  07-02 00:05:19.800: D/Process(6053): android.os.Process.killProcess(Process.java:944)
  07-02 00:05:19.800: D/Process(6053): com.android.internal.os.RuntimeInit$UncaughtHandler.uncaughtException(RuntimeInit.java:108)
  07-02 00:05:19.800: D/Process(6053): java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:693)
  07-02 00:05:19.800: D/Process(6053): java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:690)
  07-02 00:05:20.290: I/dalvikvm-heap(6336): Grow heap (frag case) to 5.287MB for 1536016-byte allocation
  07-02 00:05:20.375: I/dalvikvm-heap(6336): Grow heap (frag case) to 7.890MB for 2731536-byte allocation
  07-02 00:05:20.590: I/MediaPlayer(6336): setLPAflag() in
  07-02 00:05:20.590: I/MediaPlayer(6336): mContext is null, can't getMirrorDisplayStatus!!!
  07-02 00:05:20.590: I/MediaPlayer(6336): setLPAflag() out
  07-02 00:05:20.590: W/MediaPlayer(6336): info/warning (1, 902)
  07-02 00:05:20.635: D/MediaPlayer(6336): Mediaplayer receives message, message type: 200
  07-02 00:05:20.635: I/MediaPlayer(6336): Info (1,902)
  07-02 00:05:20.635: D/MediaPlayer(6336): Mediaplayer receives message, message type: 5
  07-02 00:05:20.635: D/MediaPlayer(6336): Mediaplayer receives message, message type: 1
  07-02 00:05:20.685: E/(6336): file /data/data/com.nvidia.NvCPLSvc/files/driverlist.txt: not found!
  07-02 00:05:20.685: I/(6336): Attempting to load EGL implementation /system/lib//egl/libEGL_tegra_impl
  07-02 00:05:20.735: I/(6336): Loaded EGL implementation /system/lib//egl/libEGL_tegra_impl
  07-02 00:05:20.820: I/(6336): Loading GLESv2 implementation /system/lib//egl/libGLESv2_tegra_impl
  07-02 00:05:21.215: E/SpannableStringBuilder(6336): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
  07-02 00:05:21.215: E/SpannableStringBuilder(6336): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
  07-02 00:05:22.575: E/SpannableStringBuilder(6336): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
  07-02 00:05:22.575: E/SpannableStringBuilder(6336): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
  </code></pre>
  
  <p>and this is AsyncTank... </p>
  
  <pre><code>protected String doInBackground(String... arg0) {
  
      try {
          URL url = new URL("http://www.google.com/");
          HttpURLConnection conn = (HttpURLConnection) url.openConnection();
          conn.setDoInput(true);
          conn.setDoOutput(true);
          input = new InputStreamReader(conn.getInputStream());
          in =new BufferedReader(input);
          System.out.println("HELLO");
      } catch (MalformedURLException e) {
          e.printStackTrace();
      } catch (IOException e) {
          e.printStackTrace();
      }
      finally {
          conn.disconnect();
      }
      return null;
  }
  </code></pre>