I have a ListView where each row has a fixed height.
Every row contains, next to some images, a TextView.
Sometimes, the text I want to display is too large and hence I would like to make it scrollable.
So I added (based on Making TextView scrollable on Android) the following lines to my TextView
text.setMaxLines(5);
text.setVerticalScrollBarEnabled(true);
text.setMovementMethod(ScrollingMovementMethod.getInstance());
This works fine if I use the TextView in isolation but not when I put the TextView inside a ListView:
as soon as I do a vertical scroll, the events seem to be consumed by the ListView.
Any suggestions on how I can make this work?
The complete (test)activity is added below (no layout.xml)
public class TestScrollableTextView extends Activity
{
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
LinearLayout layout = new LinearLayout(this);
//add a ListView
ListView list = new ListView(this);
layout.addView(list);
list.setAdapter(new BaseAdapter()
{
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
TextView text = new TextView(TestScrollableTextView.this);
String s = "";
//add 10 lines of text, all but first are indented
for (int i = 0; i < 10; i++)
{
if(i>0) s+="\t";
s += "position "+position+"; line="+i+"\n";
}
text.setText(s);
text.setMaxLines(5);
text.setVerticalScrollBarEnabled(true);
text.setMovementMethod(ScrollingMovementMethod.getInstance());
return text;
}
@Override
public long getItemId(int position)
{
return 0;
}
@Override
public Object getItem(int position)
{
return null;
}
@Override
public int getCount()
{
return 20;
}
});
setContentView(layout);
}
}
getLineCount and getLineHieght and check if the Text is larger than the TextView.
if you use this code, the listView can be scrolled by touching anywhere other than the TextView with (boolean)isLarger = true.
text.setText(s);
text.setMaxLines(100);
text.setVerticalScrollBarEnabled(true);
text.setMovementMethod(new ScrollingMovementMethod());
OnTouchListener listener = new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
boolean isLarger;
isLarger = ((TextView) v).getLineCount()
* ((TextView) v).getLineHeight() > v.getHeight();
if (event.getAction() == MotionEvent.ACTION_MOVE
&& isLarger) {
v.getParent().requestDisallowInterceptTouchEvent(true);
} else {
v.getParent().requestDisallowInterceptTouchEvent(false);
}
return false;
}
};
text.setOnTouchListener(listener);
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