android - ListView: TextView with LinkMovementMethod makes list item unclickable?

Question

What I want to do: A list with messages like this:

<UserName> and here is the mnessage the user writes, that will wrap nicely to the next line. exactly like this.

What I have:

ListView R.layout.list_item:

<TextView
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/text_message"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:text="(Message Text)" />

Adapter that inflates the above layout and does:

SpannableStringBuilder f = new SpannableStringBuilder(check.getContent());
f.append(username);
f.setSpan(new InternalURLSpan(new OnClickListener() {
    @Override
    public void onClick(View v) {
        Toast.makeText(context, "Clicked User", Toast.LENGTH_SHORT).show();
    }
}), f.length() - username.length(), f.length(),
        Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

f.append(" " + message);

messageTextView.setText(f);
messageTextView.setMovementMethod(LinkMovementMethod.getInstance());
meesageTextView.setFocusable(false);

The InternalURLSpan class

public class InternalURLSpan extends ClickableSpan {
    OnClickListener mListener;

    public InternalURLSpan(OnClickListener listener) {
        mListener = listener;
    }

    @Override
    public void onClick(View widget) {
        mListener.onClick(widget);
    }

    @Override
    public void updateDrawState(TextPaint ds) {
        super.updateDrawState(ds);
        ds.setUnderlineText(false);
    }
}

In the activity I have in onCreate(...):

listView.setOnItemClickListener(ProgramChecksActivity.this);

and the implementation of the above

@Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
    Toast.makeText(context, "Clicked Item", Toast.LENGTH_SHORT).show();
}

The problem:

Clicking on the item, does not show the toast. Only clicking on the username does show the toast.

I am guessing, that setMovementMethod(LinkMovementMethod.getInstance()); makes the TextView clickable. So the items themselves do never get clicked anymore.

How can I make the items clickable again? Having the same functionality as I want.

Answer 1

There are THREE show-stoppers in this situation. The root reason is that when you call setMovementMethod or setKeyListener, TextView "fixes" it's settings:

setFocusable(true);
setClickable(true);
setLongClickable(true);

The first problem is that when a View is clickable - it always consumes ACTION_UP event (it returns true in onTouchEvent(MotionEvent event)).
To fix that you should return true in that method only if the user actually clicks the URL.

But the LinkMovementMethod doesn't tell us, if the user actually clicked a link. It returns "true" in it's onTouch if the user clicks the link, but also in many other cases.

So, actually I did a trick here:

public class TextViewFixTouchConsume extends TextView {

    boolean dontConsumeNonUrlClicks = true;
    boolean linkHit;

    public TextViewFixTouchConsume(Context context) {
        super(context);
    }

    public TextViewFixTouchConsume(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public TextViewFixTouchConsume(
        Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        linkHit = false;
        boolean res = super.onTouchEvent(event);

        if (dontConsumeNonUrlClicks)
            return linkHit;
        return res;

    }

    public void setTextViewHTML(String html)
    {
        CharSequence sequence = Html.fromHtml(html);
        SpannableStringBuilder strBuilder = 
            new SpannableStringBuilder(sequence);
        setText(strBuilder);
    }

    public static class LocalLinkMovementMethod extends LinkMovementMethod{
        static LocalLinkMovementMethod sInstance;


        public static LocalLinkMovementMethod getInstance() {
            if (sInstance == null)
                sInstance = new LocalLinkMovementMethod();

            return sInstance;
        }

        @Override
        public boolean onTouchEvent(TextView widget, 
            Spannable buffer, MotionEvent event) {
            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.setSelection(buffer,
                                buffer.getSpanStart(link[0]),
                                buffer.getSpanEnd(link[0]));
                    }

                    if (widget instanceof TextViewFixTouchConsume){
                        ((TextViewFixTouchConsume) widget).linkHit = true;
                    }
                    return true;
                } else {
                    Selection.removeSelection(buffer);
                    Touch.onTouchEvent(widget, buffer, event);
                    return false;
                }
            }
            return Touch.onTouchEvent(widget, buffer, event);
        }
    }
}

You should call somewhere

textView.setMovementMethod(
    TextViewFixTouchConsume.LocalLinkMovementMethod.getInstance()
);

to set this MovementMethod for the textView.

This MovementMethod raises a flag in TextViewFixTouchConsume if user actually hits link. (only in ACTION_UP and ACTION_DOWN events) and TextViewFixTouchConsume.onTouchEvent returns true only if user actually hit link.

But that's not all!!!! The third problem is that ListView (AbsListView) calls it's performClick method (that calls onItemClick event handler) ONLY if ListView's item view has no focusables. So, you need to override

@Override
public boolean hasFocusable() {
    return false;
}

in a view that you add to ListView. (in my case that is a layout that contains textView)

or you can use setOnClickLIstener for that view. The trick is not very good, but it works.