Edittext输入数值时做最大最小的限制如0.01到9999.99

方法比较简单，监听输入的数值是否大于或小于指定的值即可，如果大于了，就给edit设置上最大的值，如果小于了就给edit设置最小的值

注意要在xml中指定inputType，不然字符串转int或者double的时候会出现异常

 /** edittext只能输入数值的时候做最大最小的限制 */
     public static void setRegion(final EditText edit, final double MIN_MARK, final double MAX_MARK) {
         edit.addTextChangedListener(new TextWatcher() {
             @Override
             public void onTextChanged(CharSequence s, int start, int before, int count) {
                 if (start > 1) {
                     if (MIN_MARK != -1 && MAX_MARK != -1) {
                         double num = Double.parseDouble(s.toString());
                         if (num > MAX_MARK) {
                             s = String.valueOf(MAX_MARK);
                             edit.setText(s);
                         } else if (num < MIN_MARK) {
                             s = String.valueOf(MIN_MARK);
                             edit.setText(s);
                         }
                         edit.setSelection(s.length());
                     }
                 }
             }

             @Override
             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
             }

             @Override
             public void afterTextChanged(Editable s) {
                 if (s != null && !s.equals("")) {
                     if (MIN_MARK != -1 && MAX_MARK != -1) {
                         double markVal = 0;
                         try {
                             markVal = Double.parseDouble(s.toString());
                         } catch (NumberFormatException e) {
                             markVal = 0;
                         }
                         if (markVal > MAX_MARK) {
                             edit.setText(String.valueOf(MAX_MARK));
                             edit.setSelection(String.valueOf(MAX_MARK).length());
                         }
                         return;
                     }
                 }
             }
         });
     }