安卓搜索关键字变色 首字母变色

Question

String s = cursor.getString(idxName);
int index;
ForegroundColorSpan span = new ForegroundColorSpan(Color.parseColor("#00FF00"));//要显示的颜色
SpannableStringBuilder builder = new SpannableStringBuilder(s);
index = s.indexOf(text);
if (index != -1) {
builder.setSpan(span, index, index + text.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
textView.setText(builder);
} else {
textView.setText(s);
}

在网上看了一下 这样可以使含有关键字的字符串变色
现在想实现的效果是 text = “axcj”
s = “aqw xqw coi jdf”
输入text ,s的每一个手字母变色 求大神指点一下如何修改，自己试了几次效果都不理想。。

Answer 1

SpannableString spannableString = new SpannableString(content);
int textColor = context.getResources().getColor(R.color.red);
spannableString.setSpan(clickSpan, start, end, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
registerOnTouch(textView);
首先将你的s转换为spannableString,然后setSpan,注意最后一个参数为Spannable.SPAN_INCLUSIVE_INCLUSIVE，千万不要忘记加上registerOnTouch(textView);
private void registerOnTouch(TextView tv) {
    tv.setOnTouchListener(new OnTouchListener() {
        @SuppressLint("ClickableViewAccessibility")
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            boolean ret = false;
            CharSequence text = ((TextView) v).getText();
            Spannable stext = Spannable.Factory.getInstance().newSpannable(text);
            TextView widget = (TextView) v;
            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 = stext.getSpans(off, off, ClickableSpan.class);

                if (link.length != 0) {
                    if (action == MotionEvent.ACTION_UP) {
                        link[0].onClick(widget);
                    }
                    ret = true;
                }
            }
            return ret;
        }
    });
}