I'm using clickable span in a textView to enable only part of the text to be clickable. It works fine except that the textView is scrolling down and that's something I don't want. It happens because I use LinkMovementMethod that scrolls if needed. Is there anyway to cancel the scrolling?
SpannableString ss = "My text [click area] end."
ClickableSpan clickableSpan = new ClickableSpan() {
@Override
public void onClick(View textView) {
// My click action
}
};
// Set the span
String fromString = "text";
int startClickPos = ss.toString().indexOf(fromString)+fromString.length()+1;
int endCickPos=startClickPos+ 12;
ss.setSpan(clickableSpan, startClickPos, endCickPos, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
textView.setText(ss);
textView.setMovementMethod(LinkMovementMethod.getInstance());
I am using this code to disable scrolling for TextView with clickableSpan.
public class LinkMovementMethodOverride implements View.OnTouchListener{
@Override
public boolean onTouch(View v, MotionEvent event) {
TextView widget = (TextView) v;
Object text = widget.getText();
if (text instanceof Spanned) {
Spanned buffer = (Spanned) text;
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();
Layout layout = widget.getLayout();
int line = layout.getLineForVertical(y);
int off = layout.getOffsetForHorizontal(line, x);
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 only works on Spannable text. In our case setSelection doesn't work on spanned text
//Selection.setSelection(buffer, buffer.getSpanStart(link[0]), buffer.getSpanEnd(link[0]));
}
return true;
}
}
}
return false;
}
}
After that apply it to the target textview as touch listener: -
textview.setOnTouchListener(new LinkMovementMethodOverride());
100% working for me, no need to enable= false in adnroid, you can use with autolink and without scroll.
public class PreventScrollTextView extends TextView { public PreventScrollTextView(Context context) { super(context); } public PreventScrollTextView(Context context, AttributeSet attrs) { super(context, attrs); } public PreventScrollTextView(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); } @TargetApi(Build.VERSION_CODES.LOLLIPOP) public PreventScrollTextView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { super(context, attrs, defStyleAttr, defStyleRes); } @Override public void scrollTo(int x, int y) { //do nothing } }
This class is defined as:
public class LinkMovementMethod extends ScrollingMovementMethod {
So, by using LinkMovementMethod
, you've explicitly asked it to scroll.
If you want to have clickable links but not scroll, simply duplicate the LinkMovementMethod
class with just one change:
public class MyLinkMovementMethod extends BaseMovementMethod {
//copy all the code from LinkMovementMethod
}
And use it instead.
只需使用:
textview.setEnabled(false);
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.