Android格式化手机号xxx xxxx xxxx

1.输入框EditText布局

2.EditText设置监听

et1.addTextChangedListener(new TextWatcher());

3.监听中实现

   et1.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) {
                String contents = s.toString();
                int length = contents.length();
                if(length == 4){
                    if(contents.substring(3).equals(new String(" "))){ // -
                        contents = contents.substring(0, 3);
                        et1.setText(contents);
                        et1.setSelection(contents.length());
                    }else{ // +
                        contents = contents.substring(0, 3) + " " + contents.substring(3);
                        et1.setText(contents);
                        et1.setSelection(contents.length());
                    }
                } else if(length == 9){
                    if(contents.substring(8).equals(new String(" "))){ // -
                        contents = contents.substring(0, 8);
                        et1.setText(contents);
                        et1.setSelection(contents.length());
                    }else{// +
                        contents = contents.substring(0, 8) + " " + contents.substring(8);
                        et1.setText(contents);
                        et1.setSelection(contents.length());
                    }
                }

            }

            @Override
            public void afterTextChanged(Editable s) {
                String tel = et1.getText().toString().trim();
                tel = tel.replace(" ", "");
                if (tel.length() == 11) {
                    couldClick = true;   //手机号
                } else {
                    couldClick = false;  //不满足条件
                }
            }
        });