How to add a fix Linear Layout programmatically in Android?

Question

I need something like this:

LinearLayout (fix)
- Button
LinearLayout
- ScrollView
- TextView
- TextView
- TextView

I want the first LinearLayout to be fix (like a header). When someone tries to scroll down, i want the TextView to go behind the fix LinearLayout. I want that button always to be visible. With this code, everything is scrolling down. Here is my code:

    ScrollView scrollView = (ScrollView) findViewById(R.id.scrollView);

    final LinearLayout linearLayout = new LinearLayout(this);
    linearLayout.setOrientation(linearLayout.VERTICAL);
    scrollView.addView(linearLayout);

    final LinearLayout topLinearLayout = new LinearLayout(this);
    topLinearLayout.setOrientation(topLinearLayout.VERTICAL);
    linearLayout.addView(topLinearLayout);

    final Button button = new Button(this);
    button.setText(R.string.button);
    topLinearLayout.addView(button);

    TextView title = new TextView(this);
    title.setText(R.string.title);
    title.setGravity(Gravity.CENTER);
    linearLayout.addView(title);

You can create it as layout xml and then inflate it. That would be much easier to handle. `LayoutInflater inflater = LayoutInflater.from(getContext()); View view = inflater.inflate(R.layout.yourLayout, yourContainer, attachToRootOrNot);` — mgokgoz, Nov 17 '15 at 08:44
just create a layout for your view via layout editor or writing xml manually, then call it like I wrote up. Than call children views by for example `Button button = view.findViewById(R.id.btn);` Edit: You can check it out a video of my application at betone.co.uk . If one of the screens is like what you want to achieve I can share that part of code to you — mgokgoz, Nov 17 '15 at 11:42

V-rund Puro-hit · Answer 1 · 2015-11-17T08:42:32.247

You are adding your topLinearLayout into your linearLayout, which you are adding in your scrollView. this is not you want.

add scrollView and topLinearLayout in another LinearLayout

final LinearLayout mainlinearLayout = new LinearLayout(this);
mainlinearLayout.setOrientation(linearLayout.VERTICAL);

ScrollView scrollView = (ScrollView) findViewById(R.id.scrollView);

final LinearLayout topLinearLayout = new LinearLayout(this);
topLinearLayout.setOrientation(topLinearLayout.VERTICAL);

mainlinearLayout.addView(topLinearLayout); 
mainlinearLayout.addView(scrollView);

final LinearLayout linearLayout = new LinearLayout(this);
linearLayout.setOrientation(linearLayout.VERTICAL);
scrollView.addView(linearLayout);

final Button button = new Button(this);
button.setText(R.string.button);
topLinearLayout.addView(button);

TextView title = new TextView(this);
title.setText(R.string.title);
title.setGravity(Gravity.CENTER);
linearLayout.addView(title);

Thanks you, but it doesn,t work. I have this error: `Unable to start activity ComponentInfo{com.example.alexm.iqtest/com.example.alexm.iqtest.IqTest}: java.lang.NullPointerException` — Alex Mamo, Nov 17 '15 at 10:12
Problem solved with [this](http://stackoverflow.com/questions/33754968/how-to-have-dynamically-a-fixed-header-with-scrollable-content-in-android) — Alex Mamo, Nov 17 '15 at 11:55

How to add a fix Linear Layout programmatically in Android?

1 Answers1