在Android中自动在电话号码中添加破折号 [英] Automatically add dash in phone number in Android

问题描述

应改为 511-8710 ，而不是5118710.我想在用户已经在EditText中输入3位数字之后添加一个破折号. EditText的最大长度仅为7位.

Instead of 5118710, it should be 511-8710. I'd like to add a dash after the user the user inputted 3 digits already in the EditText. The maximum length of the EditText is 7 digits only.

找出上述问题后，我再次陷入了编码困境.当我已经输入了3位数字时，它会附加破折号(这是我想发生的事情)，但是我的问题是接下来的3位数字也会附加破折号(就像这样:511-871-). . 请在这件事上给予我帮助.谢谢！

After I figured out the above problem, I've got stuck in coding again. When I already inputted 3 digits, it appends dash (that's what I'd like to happen) but my problem here is that the next 3 digits also appends dash (Like this: 511-871-)... Please help me with this. thanks!

    txt_HomeNo.addTextChangedListener(new TextWatcher() {

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {

            boolean flag = true;
            String eachBlock[] = txt_HomeNo.getText().toString().split("-");
            for (int i = 0; i < eachBlock.length; i++) {
                if (eachBlock[i].length() > 3) {
                    flag = false;
                }
            }

            if (flag) {

                txt_HomeNo.setOnKeyListener(new OnKeyListener() {

                    @Override
                    public boolean onKey(View v, int keyCode, KeyEvent event) {

                        if (keyCode == KeyEvent.KEYCODE_DEL)
                            keyDel = 1;
                        return false;
                    }
                });

                if (keyDel == 0) {

                    if (((txt_HomeNo.getText().length() + 1) % 4) == 0) {

                        if (txt_HomeNo.getText().toString().split("-").length <= 3) {
                            txt_HomeNo.setText(txt_HomeNo.getText() + "-");
                            txt_HomeNo.setSelection(txt_HomeNo.getText().length());
                        }
                    }
                    a = txt_HomeNo.getText().toString();
                } else {
                    a = txt_HomeNo.getText().toString();
                    keyDel = 0;
                }

            } else {
                txt_HomeNo.setText(a);
            }

        }

推荐答案

为txt_HomeNo实施以下修改的addTextChangedListener.下面的代码检查输入的文本的长度是否为3，然后将其添加-.不是一个非常强大的解决方案，但是它可以工作！

Implement the following modified addTextChangedListener for txt_HomeNo. The code below is checking if the length of the text entered is 3 and if it is then add the - to it. Not a very robust solution but it works!

txt_HomeNo.addTextChangedListener(new TextWatcher() {

    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {

        txt_HomeNo.setOnKeyListener(new OnKeyListener() {
            @Override
            public boolean onKey(View v, int keyCode, KeyEvent event) {

                if (keyCode == KeyEvent.KEYCODE_DEL)
                    keyDel = 1;
                return false;
            }
        });

        if (keyDel == 0) {
            int len = txt_HomeNo.getText().length();
            if(len == 3) {
                txt_HomeNo.setText(txt_HomeNo.getText() + "-");
                txt_HomeNo.setSelection(txt_HomeNo.getText().length());
            }
        } else {
            keyDel = 0;
        }
    }

    @Override
    public void afterTextChanged(Editable arg0) {
        // TODO Auto-generated method stub
    }

    @Override
    public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
        // TODO Auto-generated method stub
    }
});

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