How to click or tap on a TextView text on different words?

Question

How to move to another view by click on text view with two different words. this is the string i am using.

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i want to make these two words (Term of Use, Privacy Policy) in different color and clickable..

i know ho to make color for a particular word. i want to make it clickable .

Answer 1

I finally figured it out how to have multiple clickable parts in a TextView. It is important that they all have their own ClickableSpan! That is where I went wrong the first time testing it. If they have the same ClickableSpan instance, only the last set span is remembered.

I created a String with the required clickable area's surrounded by "[" and "]".

String sentence = "this is [part 1] and [here another] and [another one]";

and here is the set TextView, the setMovementMehthod is also mandatory:

textView.setMovementMethod(LinkMovementMethod.getInstance());
textView.setText(addClickablePart(sentence), BufferType.SPANNABLE);

I have created this function, which will handle the creation of the clickable area's:

private SpannableStringBuilder addClickablePart(String str) {
    SpannableStringBuilder ssb = new SpannableStringBuilder(str);

    int idx1 = str.indexOf("[");
    int idx2 = 0;
    while (idx1 != -1) {
        idx2 = str.indexOf("]", idx1) + 1;

        final String clickString = str.substring(idx1, idx2);
        ssb.setSpan(new ClickableSpan() {

            @Override
            public void onClick(View widget) {
                Toast.makeText(getView().getContext(), clickString,
                        Toast.LENGTH_SHORT).show();
            }
        }, idx1, idx2, 0);
        idx1 = str.indexOf("[", idx2);
    }

    return ssb;
}

Answer 2

Based on Boy's response (and thank you for your response which helped me a lot), here is another way I implemented it without this '[' and ']' chars using an inner class to describe clickable words :

import java.util.List;

import android.content.Context;
import android.text.SpannableStringBuilder;
import android.text.method.LinkMovementMethod;
import android.text.style.ClickableSpan;
import android.util.AttributeSet;
import android.widget.TextView;

/**
 * Defines a TextView widget where user can click on different words to see different actions
 *
 */
public class ClickableTextView extends TextView {

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

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

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

    public void setTextWithClickableWords(String text, List<ClickableWord> clickableWords) {
        setMovementMethod(LinkMovementMethod.getInstance());
        setText(addClickablePart(text, clickableWords), BufferType.SPANNABLE);
    }

    private SpannableStringBuilder addClickablePart(String str, List<ClickableWord> clickableWords) {
        SpannableStringBuilder ssb = new SpannableStringBuilder(str);

        for (ClickableWord clickableWord : clickableWords) {
            int idx1 = str.indexOf(clickableWord.getWord());
            int idx2 = 0;
            while (idx1 != -1) {
                idx2 = idx1 + clickableWord.getWord().length();
                ssb.setSpan(clickableWord.getClickableSpan(), idx1, idx2, 0);
                idx1 = str.indexOf(clickableWord.getWord(), idx2);
            }
        }

        return ssb;
    }

    public static class ClickableWord {
        private String word;
        private ClickableSpan clickableSpan;

        public ClickableWord(String word, ClickableSpan clickableSpan) {
            this.word = word;
            this.clickableSpan = clickableSpan;
        }

        /**
         * @return the word
         */
        public String getWord() {
            return word;
        }

        /**
         * @return the clickableSpan
         */
        public ClickableSpan getClickableSpan() {
            return clickableSpan;
        }
    }
}

Hope this may help someone

EDIT : how to change link color and remove underline:

Create and use your own implementation of ClickableSpan like this :

//a version of ClickableSpan without the underline
public static class NoUnderlineClickableSpan extends ClickableSpan {
    private int color = -1;

    public void setColor(int color) {
        this.color = color;
    }

    @Override
    public void updateDrawState(TextPaint ds) {
        ds.setUnderlineText(false);
        if (this.color != -1) {
            ds.setColor(this.color);
        }
    }
}