handle textview link click in my android app
Another way, borrows a bit from Linkify but allows you to customize your handling.
Custom Span Class:
public class ClickSpan extends ClickableSpan {
private OnClickListener mListener;
public ClickSpan(OnClickListener listener) {
mListener = listener;
}
@Override
public void onClick(View widget) {
if (mListener != null) mListener.onClick();
}
public interface OnClickListener {
void onClick();
}
}
Helper function:
public static void clickify(TextView view, final String clickableText,
final ClickSpan.OnClickListener listener) {
CharSequence text = view.getText();
String string = text.toString();
ClickSpan span = new ClickSpan(listener);
int start = string.indexOf(clickableText);
int end = start + clickableText.length();
if (start == -1) return;
if (text instanceof Spannable) {
((Spannable)text).setSpan(span, start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
} else {
SpannableString s = SpannableString.valueOf(text);
s.setSpan(span, start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
view.setText(s);
}
MovementMethod m = view.getMovementMethod();
if ((m == null) || !(m instanceof LinkMovementMethod)) {
view.setMovementMethod(LinkMovementMethod.getInstance());
}
}
Usage:
clickify(textView, clickText,new ClickSpan.OnClickListener()
{
@Override
public void onClick() {
// do something
}
});
Coming at this almost a year later, there's a different manner in which I solved my particular problem. Since I wanted the link to be handled by my own app, there is a solution that is a bit simpler.
Besides the default intent filter, I simply let my target activity listen to ACTION_VIEW
intents, and specifically, those with the scheme com.package.name
<intent-filter>
<category android:name="android.intent.category.DEFAULT" />
<action android:name="android.intent.action.VIEW" />
<data android:scheme="com.package.name" />
</intent-filter>
This means that links starting with com.package.name://
will be handled by my activity.
So all I have to do is construct a URL that contains the information I want to convey:
com.package.name://action-to-perform/id-that-might-be-needed/
In my target activity, I can retrieve this address:
Uri data = getIntent().getData();
In my example, I could simply check data
for null values, because when ever it isn't null, I'll know it was invoked by means of such a link. From there, I extract the instructions I need from the url to be able to display the appropriate data.
if there are multiple links in the text view . For example textview has "https://" and "tel no" we can customise the LinkMovement method and handle clicks for words based on a pattern. Attached is the customised Link Movement Method.
public class CustomLinkMovementMethod extends LinkMovementMethod
{
private static Context movementContext;
private static CustomLinkMovementMethod linkMovementMethod = new CustomLinkMovementMethod();
public boolean onTouchEvent(android.widget.TextView widget, android.text.Spannable buffer, android.view.MotionEvent event)
{
int action = event.getAction();
if (action == MotionEvent.ACTION_UP)
{
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);
URLSpan[] link = buffer.getSpans(off, off, URLSpan.class);
if (link.length != 0)
{
String url = link[0].getURL();
if (url.startsWith("https"))
{
Log.d("Link", url);
Toast.makeText(movementContext, "Link was clicked", Toast.LENGTH_LONG).show();
} else if (url.startsWith("tel"))
{
Log.d("Link", url);
Toast.makeText(movementContext, "Tel was clicked", Toast.LENGTH_LONG).show();
} else if (url.startsWith("mailto"))
{
Log.d("Link", url);
Toast.makeText(movementContext, "Mail link was clicked", Toast.LENGTH_LONG).show();
}
return true;
}
}
return super.onTouchEvent(widget, buffer, event);
}
public static android.text.method.MovementMethod getInstance(Context c)
{
movementContext = c;
return linkMovementMethod;
}
This should be called from the textview in the following manner:
textViewObject.setMovementMethod(CustomLinkMovementMethod.getInstance(context));