限制EditText 不能输入中文

 /**
     * 限制edittext 不能输入中文
     * @param editText
     */
    public static void setEdNoChinaese(final EditText editText){
        TextWatcher textWatcher=new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                String txt = s.toString();
                //注意返回值是char数组
                char[] stringArr = txt.toCharArray();
                for (int i = 0; i < stringArr.length; i++) {
                    //转化为string
                    String value = new String(String.valueOf(stringArr[i]));
                    Pattern p = Pattern.compile("[u4e00-u9fa5]");
                    Matcher m = p.matcher(value);
                    if (m.matches()) {
                        editText.setText(editText.getText().toString().substring(0, editText.getText().toString().length() - 1));
                        editText.setSelection(editText.getText().toString().length());
                        return;
                    }
                }
            }

            @Override
            public void afterTextChanged(Editable s) {

            }
        };
        editText.addTextChangedListener(textWatcher);
    }