android假设给TextView或EditText的email链接加下划线，并在点击在email连接上能够弹框显示

怎样把textview的一些文字加上背景色:

Spannable str = new SpannableString("#fdsfdfsdfdsfd#");
Matcher matcher = getEmailPattern().matcher((CharSequence) str);
while (matcher.find()) {
int start = matcher.start();
int end = matcher.end();
str.setSpan(new ForegroundColorSpan(0xFF1A5798), start, end,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
textView.setText(str);

假设在TextView上把email链接找出来并加上下划线:

写一个属性类继承ClickableSpan

public class MessageBundleSpan extends ClickableSpan {public enum LinkType {
EMAIL
}private String mText;
private MainActivity mActivity;public MessageBundleSpan(MainActivity activity, String text) {
if (activity == null) {
throw new NullPointerException("activity is NULL");
}mActivity = activity;
mText = text;
}@Override
public void updateDrawState(TextPaint ds) {
ds.setColor(mActivity.getResources().getColor(
R.color.message_bundle_link));
ds.setUnderlineText(true);
}@Override
public void onClick(View widget) {
new AlertDialog.Builder(mActivity).setTitle("Title").setMessage(mText)
.create().show();
}}

<span style="white-space:pre"></span>TextView textView = (TextView)findViewById(R.id.textview);
String str = "$#%$%$%$fsdfsddsfsdf@163.com&*&*DFDF152152@1255.com";
textView.setText(str); SpannableStringBuilder stringBuilder = new SpannableStringBuilder(textView.getText()); applyRegexPattern(textView, stringBuilder, getEmailPattern(), MessageBundleSpan.LinkType.EMAIL); textView.setText(stringBuilder, TextView.BufferType.SPANNABLE);
textView.setMovementMethod(LinkMovementMethod.getInstance());

private static Pattern getEmailPattern() {
if (sharppattern == null)
sharppattern = Pattern.compile("[\\w[.-]]+@[\\w[.-]]+\\.[\\w]+");
return sharppattern;
} private void applyRegexPattern(TextView textView, SpannableStringBuilder stringBuilder, Pattern pattern, MessageBundleSpan.LinkType type) {
Matcher matcher = pattern.matcher(textView.getText().toString().toLowerCase());
while(matcher.find()) {
String text = textView.getText().toString().substring(matcher.start(), matcher.end());
stringBuilder.setSpan(new MessageBundleSpan(this, text), matcher.start(), matcher.end(), Spannable.SPAN_INCLUSIVE_INCLUSIVE);
}
}

效果图: