Adding items to the ScrollView dynamically make it doesn't scroll

Question

I have a simple layout:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="300dp"
android:padding="15dp">


<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:id="@+id/scrollLayout">

        </LinearLayout>

    </ScrollView>
</RelativeLayout>

Now, I inflate the outer RelativeLayout to retrieve the inner LinearLayout to put items in it.

RelativeLayout relative =  (RelativeLayout) LayoutInflater.from(activity).inflate(R.layout.gradient_pick_view, null);
LinearLayout view = (LinearLayout) relative.findViewById(R.id.scrollLayout);

After that I created a method to add some buttons to it:

for(int i=0;i<10;i++){
     LinearLayout wrapper = (LinearLayout) LayoutInflater.from(activity).inflate(R.layout.button_wrapper, null);
     Button button = (Button)wrapper .findViewById(R.id.button);
     view.addView(layout);
}

Everything works fine, but it doesn't scroll. What am I doing wrong here?

Here's the screenshot (displaying 7 of 10 buttons):

I forgot to mention - I'm using a MaterialDialog library and add this RelativeLayout as a custom view to a dialog.

remove the linear Layout.. add the button in Scroll View.Let me know if it works or not — Sagar Gangawane
– Sagar Gangawane, Commented Mar 3, 2017 at 11:53
@Spectre, what's the purpose of parent RelativeLayout? You mat remove it and ScrollView would work as expected. — azizbekian
– azizbekian, Commented Mar 3, 2017 at 12:12

Lalit Dhameliya · Accepted Answer · 2017-03-03 11:51:48Z

1

Try to set the following attribute to your scrollview,

android:fillViewport="true"

above attribute is used to make your scrollview to use entire screen of your application.

answered Mar 3, 2017 at 11:51

Lalit Dhameliya

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2 Comments

user6367252 Over a year ago

and If I don't want to fill the entire screen?

Lalit Dhameliya Over a year ago

what entire screen here means is the height and width that you have provided it will fill that area fully.

user6367252 · Accepted Answer · 2017-03-03 12:05:40Z

I had a false parameter passed to a customView in a MaterialDialog.

dialog = new MaterialDialog.Builder(activity)
                    .title(R.string.about)
                    .customView(view, true)
                    .positiveText(R.string.changing_fragments)
                    .show();

As doc says:

If wrapInScrollView is true, then the library will place your custom view inside of a ScrollView for you. This allows users to scroll your custom view if necessary (small screens, long content, etc.). However, there are cases when you don't want that behavior. This mostly consists of cases when you'd have a ScrollView in your custom layout, including ListViews, RecyclerViews, WebViews, GridViews, etc. The sample project contains examples of using both true and false for this parameter.

Now it's working.

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