当前位置: 代码迷 >> Android >> Android 正则表达式范例
  详细解决方案

Android 正则表达式范例

热度:73   发布时间:2016-05-01 13:47:52.0
Android 正则表达式实例

editText正则表达式的使用 检查输入是否符合规则?

import Android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; /** * Class which shows how to validate user input with regular expression * * @author FaYnaSoft Labs */ public class Main extends Activity { private EditText editText; private Button button; @Override public void onCreate(Bundle savedInstanceState) {   super.onCreate(savedInstanceState);   setContentView(R.layout.main);   editText = (EditText) findViewById(R.id.textId);   editText.setText("EditText element");   button = (Button) findViewById(R.id.btnId);   button.setText("Check");   button.setOnClickListener(new View.OnClickListener() {    @Override    public void onClick(View v) {     if(checkString(editText.getText().toString())) {      editText.setText("Corect");     }    }   }); } /**   * This method checks if String is correct   * @param s - String which need to check   * @return value of matching   */ private boolean checkString(String s) {   return s.matches("\\w*[.](Java|cpp|class)"); } } 

?

正则表达式查找字符 文章分类:移动开发 String s_Result="Distance: 2.8km (about 9 mins)"; //Distance parsing Pattern p = Pattern.compile("Distance: (\\d+(\\.\\d+)?)(.*?)\\b"); Matcher m = p.matcher(s_Result); if(m.find()){     MatchResult mr=m.toMatchResult();     f_Distance=mr.group(1);//2.8     m_DistanceUnit=mr.group(3);//km } //Time parsing p = Pattern.compile("about (\\d+(\\.\\d+)?) (.*)\\b"); m = p.matcher(s_Result); if(m.find()){     MatchResult mr=m.toMatchResult();     f_timeEst=mr.group(1);//9     m_timeEstUnit=mr.group(3);//min } 或者 String s_Result="Distance: 2.8km (about 9 mins)"; Pattern p = Pattern.compile("(\\d+(\\.\\d+)?) ?(\\w+?)\\b"); Matcher m = p.matcher(s_Result); while(m.find()){     MatchResult mr=m.toMatchResult();     String value=mr.group(1);//2.8 and 9 come here     String units=mr.group(3);//km and mins come here } 正则表达式以过滤特殊字符 在网上找了好久也没找到个合适的正则表达式以过滤特殊字符;自己学习了下,写了两个,实现要求。 Java 代码 // 过滤特殊字符      public   static   String StringFilter(String   str)   throws   PatternSyntaxException   {                     // 只允许字母和数字                       // String   regEx  =  "[^a-zA-Z0-9]";                                        // 清除掉所有特殊字符            String regEx="[`~!@#$%^&*()+=|{}':;',\\[\\].<>/?~!@#¥%……& amp;*()——+|{}【】‘;:”“’。,、?]";            Pattern   p   =   Pattern.compile(regEx);               Matcher   m   =   p.matcher(str);               return   m.replaceAll("").trim();               }         @Test             public    void   testStringFilter()   throws   PatternSyntaxException   {               String   str   =   "*adCVs*34_a _09_b5*[/435^*&城池()^$$&*). {}+.|.)%%*(*.中国}34{45[]12.fd'*&999下面是中文的字符¥……{}【】。,;’“‘”?";               System.out.println(str);               System.out.println(StringFilter(str));               }    // 过滤特殊字符 public static String StringFilter(String str) throws PatternSyntaxException { // 只允许字母和数字 // String regEx = "[^a-zA-Z0-9]"; // 清除掉所有特殊字符 String regEx="[`~!@#$%^&*()+=|{}':;',\\[\\].<>/?~!@#¥%……&*()——+|{}【】‘;:”“’。,、?]"; Pattern p = Pattern.compile(regEx); Matcher m = p.matcher(str); return m.replaceAll("").trim(); } @Test public void testStringFilter() throws PatternSyntaxException { String str = "*adCVs*34_a _09_b5*[/435^*&城池()^$$&*).{}+.|.)%%*(*.中国}34{45[]12.fd'*&999下面是中文的字符¥……{}【】。,;’“‘”?"; System.out.println(str); System.out.println(StringFilter(str)); } 

?

1 楼 mcxiaoke 2010-11-02  
用InputFilter就可以了

android.text.InputFilter
Known Indirect Subclasses
DateKeyListener, DateTimeKeyListener, DialerKeyListener, DigitsKeyListener, InputFilter.AllCaps, InputFilter.LengthFilter, LoginFilter, LoginFilter.PasswordFilterGMail, LoginFilter.UsernameFilterGMail, LoginFilter.UsernameFilterGeneric, NumberKeyListener, TimeKeyListener