android 正则
16lz
2022-06-16
class SearchWather implements TextWatcher{
//监听改变的文本框
private EditText editText;
/**
* 构造函数
*/
public SearchWather(EditText editText){
this.editText = editText;
}
@Override
public void onTextChanged(CharSequence ss, int start, int before, int count) {
String editable = editText.getText().toString();
String str = stringFilter(editable.toString());
if(!editable.equals(str)){
editText.setText(str);
//设置新的光标所在位置
editText.setSelection(str.length());
}
}
@Override
public void afterTextChanged(Editable s) {
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,int after) {
}
}
public static String stringFilter(String str)throws PatternSyntaxException{
// 只允许字母和数字
String regEx = "[^a-zA-Z0-9]";
Pattern p = Pattern.compile(regEx);
Matcher m = p.matcher(str);
return m.replaceAll("").trim();
}
//监听改变的文本框
private EditText editText;
/**
* 构造函数
*/
public SearchWather(EditText editText){
this.editText = editText;
}
@Override
public void onTextChanged(CharSequence ss, int start, int before, int count) {
String editable = editText.getText().toString();
String str = stringFilter(editable.toString());
if(!editable.equals(str)){
editText.setText(str);
//设置新的光标所在位置
editText.setSelection(str.length());
}
}
@Override
public void afterTextChanged(Editable s) {
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,int after) {
}
}
public static String stringFilter(String str)throws PatternSyntaxException{
// 只允许字母和数字
String regEx = "[^a-zA-Z0-9]";
Pattern p = Pattern.compile(regEx);
Matcher m = p.matcher(str);
return m.replaceAll("").trim();
}
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