Question

Code in async task:

    @Override
    protected void onPreExecute() {
        super.onPreExecute();
        ScrollView sv = (ScrollView)findViewById(mScrollViewID);
        sv.removeAllViews();
        pb = new ProgressBar(mContext, null, android.R.attr.progressBarStyleSmall);
        pb.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
        pb.setIndeterminate(true);
        pb.setVisibility(View.VISIBLE);

        TextView tv = new TextView(mContext);
        tv.setText("Some text here.");
        sv.addView(pb);
    }

Note the TextView at the end – if I add that to the ScrollView instead, it shows up just fine. However, I can’t seem to get the ProgressBar to display anything at all. It’s my first time using the control – am I missing something silly?

Edit: if it matters, the ScrollView in use is defined in XML as:

<ScrollView android:id="@+id/scrollview0" android:layout_width = "match_parent" android:layout_height="match_parent"
            android:fillViewport="true" android:padding="5dp">

Answer 1

This problem occurs many when you are creating ProgressBar dynamically

i suggest create one ProgressBar through xml

and set default visibility GONE