public class StringHandleExampleActivity extends Activity {  /** Called when the activity is first created. */  private TextView textView;  private String tempStr = "abcd12我的中古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);   //設置指定位置textview的背景顏色       style.setSpan(new ForegroundColorSpan(Color.RED),list.get(i),list.get(i)+1,Spannable.SPAN_EXCLUSIVE_INCLUSIVE);   //設置指定位置文字的顏色     }    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;  }}