实现方案：
我们直接参考实例代码：
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private String pattern = "((http|ftp|https)://)(([a-zA-Z0-9\\._-]+\\.[a-zA-Z]{2,6})|([0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}))(:[0-9]{1,4})*(/[a-zA-Z0-9\\&%_\\./-~-]*)?|(([a-zA-Z0-9\\._-]+\\.[a-zA-Z]{2,6})|([0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}))(:[0-9]{1,4})*(/[a-zA-Z0-9\\&%_\\./-~-]*)?";Pattern r = Pattern.compile(pattern);Matcher m;mTv.setText(identifyUrl(richURL.msg));public SpannableStringBuilderForAllvers identifyUrl(CharSequence text) { CharSequence contextText; CharSequence clickText; text = text == null ? "" : text; //以下用于拼接本来存在的spanText SpannableStringBuilderForAllvers span = new SpannableStringBuilderForAllvers(text); ClickableSpan[] clickableSpans = span.getSpans(0, text.length(), ClickableSpan.class); if (clickableSpans.length > 0) { int start = 0; int end = 0; for (int i = 0; i < clickableSpans.length; i++) { start = span.getSpanStart(clickableSpans[0]); end = span.getSpanEnd(clickableSpans[i]); } //可点击文本后面的内容页 contextText = text.subSequence(end, text.length()); //可点击文本 clickText = text.subSequence(start, end); } else { contextText = text; clickText = null; } m = r.matcher(contextText); //匹配成功 while (m.find()) { //得到网址数m.group() if (m.start() < m.end()) { span.setSpan(new LinkClickSpan(m.group(), m.group(), mUrlSpanClickListener), m.start(), m.end(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE); } } return span;}private static final String HTTPS = "https://";private static final String HTTP = "http://";private static final String FTP = "ftp://";public static boolean hasNetUrlHead(String url) { return (!TextUtils.isEmpty(url)) && (url.startsWith(HTTP) || url.startsWith(HTTPS) || url.startsWith(FTP));}private UrlSpanClickListener mUrlSpanClickListener = new UrlSpanClickListener() { @Override public void onClick(View view, String url, String content) { if (TextUtils.isEmpty(url)) { return; } Matcher url_matcher = Patterns.WEB_URL.matcher(url); if (url_matcher.matches()) { String tempUrl; if (hasNetUrlHead(url)) { tempUrl = url; } else { tempUrl = HTTPS + url; } //通过webview打开相应的url //Bundle bundle = new Bundle(); //bundle.putString(WebCordovaBaseFragment.EXTRA_URL, tempUrl); //bundle.putBoolean(WebCordovaBaseFragment.ENABLE_WEB_TITLE, true); //WebViewActivity.presentWeb(Utilities.getApplicationContext(), WebViewActivity.class, WebCommonFragment.class, content, bundle); } }};public interface UrlSpanClickListener { void onClick(View view, String url, String content);}public static class LinkClickSpan extends ClickableSpan { private int mColor = Utilities.getApplicationContext().getResources().getColor(R.color.yc_color_007AFF_CBN); private String mUrl; private String mContent; UrlSpanClickListener mClickListener; public LinkClickSpan(String url, String content, UrlSpanClickListener onClickListener) { super(); mUrl = url; mContent = content; mClickListener = onClickListener; } @Override public void updateDrawState(TextPaint ds) { ds.setColor(mColor); ds.linkColor = mColor; ds.setUnderlineText(true);//设置是否下划线 ds.clearShadowLayer(); } @Override public void onClick(View widget) { if (mClickListener != null) { mClickListener.onClick(widget, mUrl, mContent); } }}public class SpannableStringBuilderForAllvers extends SpannableStringBuilder{ public SpannableStringBuilderForAllvers() { super(""); } public SpannableStringBuilderForAllvers(CharSequence text) { super(text, 0, text.length()); } public SpannableStringBuilderForAllvers(CharSequence text, int start, int end){ super(text,start,end); } @Override public SpannableStringBuilder append(CharSequence text) { if (text == null) { return this; } int length = length(); return (SpannableStringBuilderForAllvers)replace(length, length, text, 0, text.length()); } /**该方法在原API里面只支持API21或者以上，这里适应低版本*/ public SpannableStringBuilderForAllvers append(CharSequence text, Object what, int flags) { if (text == null) { return this; } int start = length(); append(text); setSpan(what, start, length(), flags); return this; }}public class ClickableSpanTextView extends AppCompatTextView { private BackgroundColorSpan backgroundColorSpan; private boolean hasSpan; public ClickableSpanTextView(Context context) { super(context); init(); } public ClickableSpanTextView(Context context, AttributeSet attrs) { super(context, attrs); init(); } public ClickableSpanTextView(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); init(); } private void init() { setMovementMethod(LinkMovementMethod.getInstance()); backgroundColorSpan = new BackgroundColorSpan(getContext().getResources().getColor(R.color.yc_color_4B4B4B_CDG)); } @Override public boolean onTouchEvent(MotionEvent event) { boolean handled = super.onTouchEvent(event); int action = event.getAction(); if (!(getText() instanceof Spannable)) { return handled; } Spannable spannable = (Spannable) getText(); if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_DOWN) { int x = (int) event.getX(); int y = (int) event.getY(); x -= getTotalPaddingLeft(); y -= getTotalPaddingTop(); x += getScrollX(); y += getScrollY(); Layout layout = getLayout(); int line = layout.getLineForVertical(y); int off = layout.getOffsetForHorizontal(line, x); if (off >= getText().length()) { int off1 = layout.getOffsetForHorizontal(line, x - getTextSize()); if (off == off1) { return handled; } } ClickableSpan[] links = spannable.getSpans(off, off, ClickableSpan.class); if (links.length > 0) { ClickableSpan clickableSpan = links[0]; int start = spannable.getSpanStart(clickableSpan); int end = spannable.getSpanEnd(clickableSpan); if (action == MotionEvent.ACTION_DOWN && !hasSpan) { spannable.setSpan(backgroundColorSpan, start, end, Spanned.SPAN_INCLUSIVE_INCLUSIVE); hasSpan = true; } else if (hasSpan) { spannable.removeSpan(backgroundColorSpan); hasSpan = false; } } return links.length != 0; } else { if (hasSpan && action != MotionEvent.ACTION_MOVE) { spannable.removeSpan(backgroundColorSpan); hasSpan = false; } } return handled; }} |
以上实例代码大家可以测试下，感谢大家的学习和对服务器之家的支持。
原文链接：https://www.cnblogs.com/wangqiong/p/11412269.html
