在textview中字母之間設置空格

Question

是否有一種方法可以在字母之間設置一個自定義空間（以像素爲單位）到editText？我只是如何設置兩條線之間的空間中，但在同一行字母之間BOT

Answer 1

你可以implament定製TextWatcher，並添加X空間用戶每次enteres 1.

Answer 2

我不得不這樣做今兒所以這裏有關於這個問題的一些更新：

從API 21可以使用XML屬性android:letterSpacing="2"或代碼myEditText.setLetterSpacing(2);

API 21之前，用TextWatcher用下面的代碼

private static final String LETTER_SPACING = " "; 

private EditText myEditText; 

private String myPreviousText; 

... 
// Get the views 
myEditText = (EditText) v.findViewById(R.id.edt_code); 

myEditText.addTextChangedListener(this); 
... 

@Override 
public void beforeTextChanged(CharSequence s, int start, int count, int after) { 
    // Nothing here 
} 

@Override 
public void onTextChanged(CharSequence s, int start, int before, int count) { 
    // Nothing here 
} 

@Override 
public void afterTextChanged(Editable s) { 
    String text = s.toString(); 

    // Only update the EditText when the user modify it -> Otherwise it will be triggered when adding spaces 
    if (!text.equals(myPreviousText)) {    
     // Remove spaces 
     text = text.replace(" ", ""); 

     // Add space between each character 
     StringBuilder newText = new StringBuilder(); 
     for (int i = 0; i < text.length(); i++) { 
      if (i == text.length() - 1) { 
       // Do not add a space after the last character -> Allow user to delete last character 
       newText.append(Character.toUpperCase(text.charAt(text.length() - 1))); 
      } 
      else { 
       newText.append(Character.toUpperCase(text.charAt(i)) + LETTER_SPACING); 
      } 
     } 

     myPreviousText = newText.toString(); 

     // Update the text with spaces and place the cursor at the end 
     myEditText.setText(newText); 
     myEditText.setSelection(newText.length()); 
    } 
}