Refreshing Marquee Text on Android

问题

On launch, my marquee text is working normally. Then i want to update text in somewhen. I get text on internet and set it to textview:

marqueeText.setText(Html.fromHtml(GetNew.getNews()));

There is no problem about getting text from internet. But then the text is not sliding. What is the problem about that? Thanks for your help.

Edit: I get this log when try to refresh it. I refresh it in a thread.

06-12 10:25:04.403: E/tag(498): Only the original thread that created a view hierarchy can touch its views.

回答1:

You should use the handler for working on UI thread.

private Handler handler = new Handler(new Callback() {

        public boolean handleMessage(Message msg) {
            marqueeText.setText(Html.fromHtml(GetNew.getNews()));
            marqueeText.setSelected(true);
            marqueeText.setEllipsize(TruncateAt.MARQUEE);
            return false;
        }
    });

And when you want to update the text in thread then use handler.sendEmptyMessage(0);

回答2:

i think u have not added in activity

 marqueeText.setSelected(true);

回答3:

The marquee on TextView will only scroll if the TextView is either in the selected or focused state

try TextView.setEnabled(true) or TextView.requestFocus() or TextView.setSelected(true);

回答4:

You cannot update view from threads other than the UI thread.

来源：https://stackoverflow.com/questions/10994900/refreshing-marquee-text-on-android