java.lang.IllegalArgumentException due to Spannable TextView

Question

I received this crash report in my Google Play Console which I myself never experience and unable to reproduce.

java.lang.IllegalArgumentException: 
  at android.text.method.WordIterator.checkOffsetIsValid (WordIterator.java:380)
  at android.text.method.WordIterator.isBoundary (WordIterator.java:101)
  at android.widget.Editor$SelectionStartHandleView.positionAtCursorOffset (Editor.java:4300)
  at android.widget.Editor$HandleView.updatePosition (Editor.java:3736)
  at android.widget.Editor$PositionListener.onPreDraw (Editor.java:2513)
  at android.view.ViewTreeObserver.dispatchOnPreDraw (ViewTreeObserver.java:944)
  at android.view.ViewRootImpl.performTraversals (ViewRootImpl.java:2417)
  at android.view.ViewRootImpl.doTraversal (ViewRootImpl.java:1321)
  at android.view.ViewRootImpl$TraversalRunnable.run (ViewRootImpl.java:6708)
  at android.view.Choreographer$CallbackRecord.run (Choreographer.java:894)
  at android.view.Choreographer.doCallbacks (Choreographer.java:696)
  at android.view.Choreographer.doFrame (Choreographer.java:631)
  at android.view.Choreographer$FrameDisplayEventReceiver.run (Choreographer.java:880)
  at android.os.Handler.handleCallback (Handler.java:815)
  at android.os.Handler.dispatchMessage (Handler.java:104)
  at android.os.Looper.loop (Looper.java:207)
  at android.app.ActivityThread.main (ActivityThread.java:5728)
  at java.lang.reflect.Method.invoke (Method.java)
  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run (ZygoteInit.java:789)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:679)

The crash report didn't mention which class is causing the crash. My best guess is the follow custom TextView.

private void customTextView(TextView view) {
        SpannableStringBuilder spanTxt = new SpannableStringBuilder(
                Html.fromHtml(definition[0]));
        spanTxt.append("\n\nExample");
        spanTxt.setSpan(new ClickableSpan() {
            @Override
            public void onClick(View view) {
                showAlert();
            }
        }, spanTxt.length() -"Example".length(), spanTxt.length(), 0);
        view.setMovementMethod(LinkMovementMethod.getInstance());
        view.setText(spanTxt, TextView.BufferType.SPANNABLE);
    }

Is there any problem with my custom TextView?

Answer 1

I have removed your Html.fromHtml(definition[0]) and \n\n. Then it worked well. Please test these two things if these are coming or not.

private void customTextView(TextView view) {
    SpannableStringBuilder spanTxt = new SpannableStringBuilder("Testing");
    spanTxt.append("Example");
    spanTxt.setSpan(new ClickableSpan() {
        @Override
        public void onClick(View view) {
          Log.e("tag","show click");
        }
    }, spanTxt.length() -"Example".length(), spanTxt.length(), 0);
    view.setMovementMethod(LinkMovementMethod.getInstance());
    view.setText(spanTxt, TextView.BufferType.SPANNABLE);
}

Cross check your text if it coming for not. This one Html.fromHtml(definition[0]). Not sure why you using \n\n it will goes to next line.

Check these two things. Others are working perfectly.

Thanks.

Answer 2

The exception refers to this line in AOSP. I think this line in your code:

spanTxt.length() -"Example".length()

is creating a negative or otherwise invalid offset value (probably because you're appending "\n\nExample" instead? Is there a way you could just embed that example string in your resource string?