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[操作系统]Android TextView 高亮字体并添加点击事件

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package com.zutil.lib;import android.graphics.Typeface;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.text.Spannable;import android.text.SpannableStringBuilder;import android.text.Spanned;import android.text.TextPaint;import android.text.method.LinkMovementMethod;import android.text.style.ClickableSpan;import android.text.style.ForegroundColorSpan;import android.text.style.StyleSpan;import android.text.style.UnderlineSpan;import android.view.View;import android.widget.TextView;import android.widget.Toast;public class MainActivity extends AppCompatActivity {  private TextView tv1 ;  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    tv1 = (TextView) findViewById( R.id.tv1 );    String url1 = "这是测试";    String url2 = "点击一下试试看";    String url = url1 + url2;    SpannableStringBuilder style = new SpannableStringBuilder(url1 + url2);    TextViewURLSpan myURLSpan = new TextViewURLSpan();    style.setSpan(myURLSpan, url1.length(), url.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);    style.setSpan(new StyleSpan(Typeface.NORMAL ), url1.length(), url.length(), Spannable.SPAN_INCLUSIVE_EXCLUSIVE);    style.setSpan(new UnderlineSpan(), url1.length(), url.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);    style.setSpan(new ForegroundColorSpan(getResources().getColor(R.color.colorPrimaryDark)), url1.length(), url.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);   // style.setSpan(new BackgroundColorSpan(getResources().getColor(R.color.colorAccent)), url1.length(),url.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);    tv1.setText(style);    //设置超链接为可点击状态    tv1.setMovementMethod(LinkMovementMethod.getInstance());  }  class TextViewURLSpan extends ClickableSpan {    @Override    public void updateDrawState(TextPaint ds) {      ds.setColor(getResources().getColor(R.color.colorAccent));      ds.setUnderlineText(false); //去掉下划线    }    @Override    public void onClick(View widget) {//点击事件      Toast.makeText( MainActivity.this, "点击了", Toast.LENGTH_SHORT).show();    }  }}