Last active
August 22, 2017 15:14
-
-
Save amilcar-andrade/e4b76840da1dc92febfc to your computer and use it in GitHub Desktop.
@TextView that only responds to touch events of links
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
public class LinkifyTextView extends TextView { | |
public LinkifyTextView(Context context, AttributeSet attrs, int defStyle) { | |
super(context, attrs, defStyle); | |
init(); | |
} | |
public LinkifyTextView(Context context, AttributeSet attrs) { | |
super(context, attrs); | |
init(); | |
} | |
public LinkifyTextView(Context context) { | |
super(context); | |
init(); | |
} | |
private void init() { | |
this.setAutoLinkMask(Linkify.ALL); | |
} | |
/** | |
* @Linkify applies to a movementMethod to the textView @LinkMovementMethod. That movement method thought it | |
* implements a scrolling vertically method it overrides any other scrolling method the parent has. | |
* | |
* Although touchEvent can be dispached to the parent, the specific parent ScrollView needed the whole sequence | |
* ACTION_DOWN , ACTION_MOVE, ACTION_UP to perform (sweep detection). So the solution to this problem is after | |
* applying @Linkify we need to remove the textView's scrolling method and handle the @LinkMovementMethod link | |
* detection action in onTouchEvent of the textView. | |
*/ | |
@Override | |
public boolean onTouchEvent(MotionEvent event) { | |
final TextView widget = (TextView)this; | |
final Object text = widget.getText(); | |
if (text instanceof Spannable) { | |
final Spannable buffer = (Spannable)text; | |
final int action = event.getAction(); | |
if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_DOWN) { | |
int x = (int)event.getX(); | |
int y = (int)event.getY(); | |
x -= widget.getTotalPaddingLeft(); | |
y -= widget.getTotalPaddingTop(); | |
x += widget.getScrollX(); | |
y += widget.getScrollY(); | |
final Layout layout = widget.getLayout(); | |
final int line = layout.getLineForVertical(y); | |
final int off = layout.getOffsetForHorizontal(line, x); | |
final ClickableSpan[] link = buffer.getSpans(off, off, ClickableSpan.class); | |
if (link.length != 0) { | |
if (action == MotionEvent.ACTION_UP) { | |
link[0].onClick(widget); | |
} else if (action == MotionEvent.ACTION_DOWN) { | |
Selection.setSelection(buffer, buffer.getSpanStart(link[0]), buffer.getSpanEnd(link[0])); | |
} | |
return true; | |
} | |
} | |
} | |
return false; | |
} | |
@Override | |
public void setText(CharSequence text, BufferType type) { | |
super.setText(text, type); | |
this.setMovementMethod(null); | |
} | |
} |
And another side effect is when for a longpress is performed, it opens up the link i.e. treated as click event.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
This works for most of the cases but disables the longpress on links. I am stuck in a same problem wherein I want to handle longpress on links and the
TextView
as well.The long press on
TextView
is working but longpress on links is not working.Have you tried the longpress?