Android TextView 给文本中拇指定片段添加自定义点击事件

package wq.test;import android.app.Activity;import android.graphics.Color;import android.os.Bundle;import android.text.SpannableString;import android.text.Spanned;import android.text.method.LinkMovementMethod;import android.text.style.ClickableSpan;import android.view.View;import android.widget.TextView;public class AndroidTestActivity extends Activity{	private final String stringToShow = "test,test,test,test,test,test,test,test,test,test,test,test," +			"test,test,test,test,test,test,test,test,test,test,test,test,test,test" +			",test,test,test,test,test,test,test,test,test,test,test,test,test,test" +			"testtest test test...";	private final String readMore = "Read More";	@Override	public void onCreate(Bundle savedInstanceState)	{		super.onCreate(savedInstanceState);		this.setContentView(R.layout.main);		TextView tv = (TextView) this.findViewById(R.id.textView);		ClickableSpan clickableSpan = new ClickableSpan() {			@Override			public void onClick(View widget) {				if (widget instanceof TextView) {					((TextView) widget).setText(stringToShow + stringToShow);				}			}		};		setClickableSpanForTextView(tv, clickableSpan, stringToShow + readMore, stringToShow.length(), stringToShow.length() + readMore.length());	}	/**	 * 	 * @param tv TextView	 * @param clickableSpan Click event	 * @param text Text to show	 * @param start Start point in text for handle click event	 * @param end End point in text for handle click event	 */	private void setClickableSpanForTextView(TextView tv, ClickableSpan clickableSpan, String text, int start, int end) {		SpannableString sp = new SpannableString(text);		sp.setSpan(clickableSpan, start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);		tv.setText(sp);		tv.setLinkTextColor(Color.RED);		tv.setMovementMethod(LinkMovementMethod.getInstance());		tv.setFocusable(false);		tv.setClickable(false);		tv.setLongClickable(false);	}}