Update Horizontal Progress Bar width programmatically (In horizontal scrollview)

Question

I have a progress bar in scroll view and I would like to modify the width programmatically, but it's looks like it's impossible, in the xml I have only Progress bar like this:

<HorizontalScrollView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">

    <ProgressBar
        android:id="@+id/progressbar"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        style="?android:attr/progressBarStyleHorizontal" />
</HorizontalScrollView>

And the code is very simple too:

ProgressBar progressBar = (ProgressBar) findViewById(R.id.progressbar);
progressBar.setMinimumWidth(3000);
progressBar.invalidate();   // tried called invalidate although setMinimumWidth called requestLayout, not help

I also tried to set layout width, like this:

progressBar.getLayoutParams().width = 3000;
progressBar.invalidate();

But found it's works only for progressbar that not in scroll view...

How can I update progress bar width (in horizontal scroll view)? and why the scroll view defect the progress bar width?

Answer 1

You aren't setting the params the right way. Try this:

HorizontalScrollView.LayoutParams params = (HorizontalScrollView.LayoutParams) progressBar.getLayoutParams();
params.width = 3000;
progressBar.setLayoutParams(params);