TextView上設定超連結，點選啟動Activity

public class TestLinkActivity extends Activity {
    private TextView tv;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        tv = new TextView(this);
        tv.setClickable(false);

        String htmlLinkText = "<a href=\"測試\">link</a> specified via an <a> tag.";
        // 文字的樣式（style）被覆寫，不能改變……
        tv.setText(Html.fromHtml(htmlLinkText));
        tv.setMovementMethod(LinkMovementMethod.getInstance());

        CharSequence text = tv.getText();
        if (text instanceof Spannable) {
            int end = text.length();
            Spannable sp = (Spannable) tv.getText();
            URLSpan[] urls = sp.getSpans(0, end, URLSpan.class);
            SpannableStringBuilder style = new SpannableStringBuilder(text);
            style.clearSpans();// should clear old spans
            for (URLSpan url : urls) {
                MyURLSpan myURLSpan = new MyURLSpan(url.getURL());
                style.setSpan(myURLSpan, sp.getSpanStart(url), sp.getSpanEnd(url), Spannable.SPAN_EXCLUSIVE_INCLUSIVE);
            }
            tv.setText(style);
        }
        setContentView(tv);
    }

    private class MyURLSpan extends ClickableSpan {
        private String mUrl;
        MyURLSpan(String url) {
            mUrl = url;
        }

        @Override
        public void onClick(View widget) {
            Toast.makeText(TestLinkActivity.this, mUrl, Toast.LENGTH_LONG).show();
            widget.setBackgroundColor(Color.parseColor("#00000000"));

            Intent intent = new Intent(TestLinkActivity.this, MyActivity.class);
            startActivity(intent);

        }
    }
}
      

1. TextView是用來顯示文本的，有時需要給TextView中的個别字設定為超連結，或者設定個别字的顔色、字型等，那就需要用到Spannable對象，可以借助Spannable對象實作以上設定  
2. myTextView = (TextView) this.findViewById(R.id.myTextView);     
3.   //建立一個 SpannableString對象     
4.   SpannableString sp = new SpannableString("這句話中有百度超連結,有高亮顯示，這樣，或者這樣，還有斜體.");     
5.   //設定超連結     
6.   sp.setSpan(new URLSpan("http://www.baidu.com"), 5, 7,     
7.   Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);     
8.   //設定高亮樣式一     
9.   sp.setSpan(new BackgroundColorSpan(Color.RED), 17 ,19,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);     
10.   //設定高亮樣式二     
11.   sp.setSpan(new ForegroundColorSpan(Color.YELLOW),20,24,Spannable.SPAN_EXCLUSIVE_INCLUSIVE);     
12.   //設定斜體     
13.   sp.setSpan(new StyleSpan(android.graphics.Typeface.BOLD_ITALIC), 27, 29, Spannable.SPAN_EXCLUSIVE_INCLUSIVE);     
14.   //SpannableString對象設定給TextView     
15.   myTextView.setText(sp);     
16.   //設定TextView可點選     
17.   myTextView.setMovementMethod(LinkMovementMethod.getInstance());