Access string from key value json response

Question

I'm getting this simple json response and I can't access the value easily. The response is this

{"email":"ted@ted.com"}

That's after doing json.toString(). Now I'm trying to access the value of email and I keep getting errors. I thought it was just

json.getString("email")

Also this is in java.

edit: here are the errors I'm getting

07-22 06:45:11.524: E/AndroidRuntime(9977): FATAL EXCEPTION: AsyncTask #2
07-22 06:45:11.524: E/AndroidRuntime(9977): java.lang.RuntimeException: An error occured while executing doInBackground()
07-22 06:45:11.524: E/AndroidRuntime(9977):     at android.os.AsyncTask$3.done(AsyncTask.java:299)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at java.util.concurrent.FutureTask.run(FutureTask.java:137)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at java.lang.Thread.run(Thread.java:856)
07-22 06:45:11.524: E/AndroidRuntime(9977): Caused by: android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
07-22 06:45:11.524: E/AndroidRuntime(9977):     at android.view.ViewRootImpl.checkThread(ViewRootImpl.java:4609)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at android.view.ViewRootImpl.invalidateChildInParent(ViewRootImpl.java:867)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at android.view.ViewGroup.invalidateChild(ViewGroup.java:4066)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at android.view.View.invalidate(View.java:10193)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at android.widget.TextView.invalidateRegion(TextView.java:4375)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at android.widget.TextView.invalidateCursor(TextView.java:4318)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at android.widget.TextView.spanChange(TextView.java:7172)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at android.widget.TextView$ChangeWatcher.onSpanAdded(TextView.java:8759)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at android.text.SpannableStringBuilder.sendSpanAdded(SpannableStringBuilder.java:979)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at android.text.SpannableStringBuilder.setSpan(SpannableStringBuilder.java:688)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at android.text.SpannableStringBuilder.setSpan(SpannableStringBuilder.java:588)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at android.text.Selection.setSelection(Selection.java:76)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at android.text.Selection.setSelection(Selection.java:87)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at android.text.method.ArrowKeyMovementMethod.initialize(ArrowKeyMovementMethod.java:302)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at android.widget.TextView.setText(TextView.java:3535)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at android.widget.TextView.setText(TextView.java:3405)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at android.widget.EditText.setText(EditText.java:80)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at android.widget.TextView.setText(TextView.java:3380)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at com.reflap.reflap.EditProfile$fillfields.doInBackground(EditProfile.java:61)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at com.reflap.reflap.EditProfile$fillfields.doInBackground(EditProfile.java:1)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at android.os.AsyncTask$2.call(AsyncTask.java:287)
07-22 06:45:11.524: E/AndroidRuntime(9977):     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
07-22 06:45:11.524: E/AndroidRuntime(9977):     ... 5 more

I'm doing this in a background process.

Answer 1

I believe your stack trace is not caused by the parsing of the JSON data, but by the fact your AsyncTask is referencing the UI (some TextView) in the doInBackground method.

You would normally reference your views onPostExecute, possibly through WeakReference s.