Android programming method for TextView part color change

This article illustrates the Android programming method to realize the color change of TextView. To share for your reference, the details are as follows:

public class StringHandleExampleActivity extends Activity {
  /** Called when the activity is first created. */
  private TextView textView;
  private String tempStr = "abcd12 My middle zx9yu5!f3,,";
  private StringBuffer sb;
  private List<Integer> list;
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    sb = new StringBuffer();
    list = new ArrayList<Integer>();
    textView = (TextView) findViewById(R.id.textView);
    for (int i = 0; i < tempStr.length(); i++) {
      if (matcherReg(String.valueOf(tempStr.charAt(i)))) {
        list.add(i);
      }
    }
    SpannableStringBuilder style=new SpannableStringBuilder(tempStr);
    for (int i = 0; i < list.size(); i++) {
      System.out.println(list.get(i)+", ");
//      style.setSpan(new BackgroundColorSpan(Color.RED),list.get(i),list.get(i)+1,Spannable.SPAN_EXCLUSIVE_INCLUSIVE);   // Set the specified location textview Background color  
      style.setSpan(new ForegroundColorSpan(Color.RED),list.get(i),list.get(i)+1,Spannable.SPAN_EXCLUSIVE_INCLUSIVE);   // Sets the color of the text for the specified location  
    }
    textView.setText(style); 
  }
  private boolean matcherReg(CharSequence c){
    String regEx="[^0-9]";  
    Pattern p = Pattern.compile(regEx);  
    Matcher m = p.matcher(c.toString());  
    if (m.matches()) {
      return false;
    }
    return true;
  }
}

I hope this article has been helpful in Android programming.