How to create Scrollview programmatically?

问题:

I have one table "TABLE_SUBJECT" which contain a number of subjects. I need to create
one horizontal scroll view with Subject.

How do I create a ScrollView with database items programmatically? If I enter 1o subject then it will be appear in scroll view as a button. Is it possible?

回答1:

you may create it as below:

ScrollView scroll = new ScrollView(context);
scroll.setBackgroundColor(android.R.color.transparent);
scroll.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
                                             LayoutParams.FILL_PARENT));
scroll.addView(yourTableView);

回答2:

if you have many elements first you need to wrap-up and add in the Scroll view; for example i need a many text view inside of scrollview, so you need to create ScrollView->LinearLayout->Many textview

                ScrollView scrollView = new ScrollView(context);
                scrollView.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));

                TextView textView = new TextView(context);
                textView.setText("my text");

                LinearLayout linearLayout = new LinearLayout(context);
                linearLayout.setOrientation(LinearLayout.VERTICAL);
                linearLayout.setGravity(Gravity.RIGHT);
                linearLayout.addView(textView);
                scrollView.addView(linearLayout);

回答3:

this may help you.

    HorizontalScrollView hsrll = (HorizontalScrollView)findViewById(R.id.hrsll);

    b = new Button(this);

    for (int i = 0; i < 5; i++) {

        b.setWidth(LayoutParams.WRAP_CONTENT);
        b.setHeight(LayoutParams.WRAP_CONTENT);

        b.setText("b"+i);
        b.setId(100+i);

        hsrll.addView(b);
    }

instead of for loop just modify the code as your need(no of records in db). but this the code for creating buttons in dynamically.

回答4:

I was doing it like this:

• Create xml with LinearLayout inside the ScrollView
• Create xml as item in ScrollView
• In activity set main content as xml with ScrollView
• Loop through all table elements with adding new View to LinearLayout form main view

For me works fine.