Android使用文本觀察器來防止輸入特殊字符

Question

我想輸入一個EditText框並使用TextWatcher來防止輸入特殊字符。

Answer 1

這是唯一的字符和空格驗證...

InputFilter filter = new InputFilter()  
{ 
    @Override 
    public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) 
    { 
     for (int i = start; i < end; i++) 
      if (!Character.isLetter(source.charAt(i)) && !Character.isSpaceChar(source.charAt(i))) 
       return ""; 

     return null; 
    } 
}; 

myTextView.setFilters(new InputFilter[] { filter });