如何在字符限制超過時更改編輯文本字體顏色？

Question

[我要改變編輯文本顏色，當字符的限制此圖像中超過就像]

[[1]：http://i.stack.imgur.com/fHTCA.png]

• 如何給基於文本更改監聽器這樣的效果???

Answer 1

我建議按照這個鏈接，我相信告訴你如何。

Android: Different colours for different characters in EditText

Answer 2

您可以使用Spannable：

EditText tv = (EditText)findViewById(R.id.tv); 

    Spannable wordtoSpan = new SpannableString("I know just how to whisper, And I know just how to cry,I know just where to find the answers"); 
    wordtoSpan.setSpan(new ForegroundColorSpan(Color.BLUE), 15, 30, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); 
    wordtoSpan.setSpan(new ForegroundColorSpan(Color.RED), 5, 10, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); 
    tv.setText(wordtoSpan); 

或HTML格式Html.fromHtml：

String text = "This is <font color='red'>red</font>. This is <font color='blue'>blue</font>."; 
    tv.setText(Html.fromHtml(text), TextView.BufferType.SPANNABLE); 

Answer 3

試試這個，我認爲這將幫助你：

if(edit_text.length> limit){edit_text.settextcolor("your color code");}