如何在Android中使用Text Watcher进行多个编辑文本？

Question

我遇到的情况是会有两个EditText控件，一个用于输入税前税率值，另一个用于输入税后税率。我将同时更改BT和Rate AT值。当我更改“费率BT”时，“费率AT”文本应随“费率BT”而变化，反之亦然。

请帮助

Answer 1

您只需将TextWatcher添加到您的edittext中即可，

rateAtEditText.addTextChangedListener(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) {
             // you can do it here, what you want to do when RateAt text change
        }

        @Override
        public void afterTextChanged(Editable s) {

        }
    });

rateBtEditText.addTextChangedListener(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) {
            // you can do it here, what you want to do when RateBt text change
        }

        @Override
        public void afterTextChanged(Editable s) {

        }
    });