TextView是用来显示文本的,有时需要给TextView中的个别字设置为超链接,或者设置个别字的颜色、字体等,那就需要用到Spannable对象,可以借助Spannable对象实现以上设置。
效果图:
Activity代码:
- package com.zhou.activity;
- import android.app.Activity;
- import android.graphics.Color;
- import android.os.Bundle;
- import android.text.Spannable;
- import android.text.SpannableString;
- import android.text.Spanned;
- import android.text.method.LinkMovementMethod;
- import android.text.style.BackgroundColorSpan;
- import android.text.style.ForegroundColorSpan;
- import android.text.style.StyleSpan;
- import android.text.style.URLSpan;
- import android.widget.TextView;
- public class TextViewLinkActivity extends Activity {
- TextView myTextView;
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.main);
- myTextView = (TextView) this.findViewById(R.id.myTextView);
- //创建一个 SpannableString对象
- SpannableString sp = new SpannableString("这句话中有百度超链接,有高亮显示,这样,或者这样,还有斜体.");
- //设置超链接
- sp.setSpan(new URLSpan("http://www.baidu.com"), 5, 7,
- Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
- //设置高亮样式一
- sp.setSpan(new BackgroundColorSpan(Color.RED), 17 ,19,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
- //设置高亮样式二
- sp.setSpan(new ForegroundColorSpan(Color.YELLOW),20,24,Spannable.SPAN_EXCLUSIVE_INCLUSIVE);
- //设置斜体
- sp.setSpan(new StyleSpan(android.graphics.Typeface.BOLD_ITALIC), 27, 29, Spannable.SPAN_EXCLUSIVE_INCLUSIVE);
- //SpannableString对象设置给TextView
- myTextView.setText(sp);
- //设置TextView可点击
- myTextView.setMovementMethod(LinkMovementMethod.getInstance());
- }
- }