How to use Android Scrollview via Java code?

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0

In xml it’s easy to use, but I’m making a dynamic form and it’s not working. I’m doing something like this:

ScrollView scroll = new ScrollView(this);

From there inside the onCreate() I use it:

scroll.addView(activity_main);
setContentView(scroll);

But it is giving error. set the Layoutparams in it also does not function.

android rolling
  • 1

    What’s the mistake ?

2 answers

1

To use your layout in . xml, you need to inflate it into a View:

LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
View viewExemplo = inflater.inflate(R.layout.seu_layout, null);
scrollView.addView(viewExemplo);

0

You can create an xml and call it scrollview.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">

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

    </LinearLayout>
</ScrollView>

Via code, you get the container that will receive the views.

View scrollView = LayoutInflater.from([contexto aqui]).inflate(R.layout.scrollview, null);

LinearLayout mLinearContainer = (LinearLayout)scrollView .findViewById(R.id.linearContent);

 // nesse mLinearContainer  você adiciona as views

  • I hadn’t noticed that you would use this layout in Activity, so just do setContentView(R.layout.scrollview) and find it directly, without needing Layoutinflater.from([context here]). inflate(R.layout.scrollview, null); Remember that Scrollview must have only one direct child and must be Viewgroup, i.e., Relativelayout, Linearlayout, etc.

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