Android Scrollview Can't Be Created Programmatically.

I want to use scrollview in my app. I tried to add a text view into the scrollview, but I can't see anything rendered, except the background color of the scroll view. here is how I

Solution 1:

When you programmatically create a ScrollView inside of it you need to create a View then add the ScrollView inside this View.

LinearLayoutmaincontainer= (LinearLayout) findViewById(R.id.weatherInfo);
maincontainer.setOrientation(LinearLayout.HORIZONTAL);

finalHorizontalScrollViewscrollView=newHorizontalScrollView(getApplicationContext());
maincontainer.addView(scrollView);

finalLinearLayoutlinearLayout=newLinearLayout(getApplicationContext());
linearLayout.setOrientation(LinearLayout.HORIZONTAL);

scrollView.addView(linearLayout);

Solution 2:

I'm not clear what's wrong with your ViewGroup, but that seems to be where the problem is. If I take your code, debug it (the code posted above has several errors), and put it into the start code for a simple activity, it will then work as expected. It creates a scrolling text area with your test text.

Here's that code. Note that it expects the layout file to contain a simple linear layout with id linearLayout1:

publicclassListTestActivityextendsActivity {
LinearLayout layout;
ScrollView myScrollView;
TextView textview;

@OverridepublicvoidonCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    layout = (LinearLayout) this.findViewById(R.id.linearLayout1);

    myScrollView = newScrollView(this);
    myScrollView.setBackgroundColor(0xfff00fff);
    myScrollView.setLayoutParams(newLayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));


    textview = newTextView(this);
    textview.setLayoutParams(newLayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));
    textview.setText("sadfasdfasdfasdfasdfasd fasdfsadfsadf");

    myScrollView.addView(textview);
    layout.addView(myScrollView);
}}