如何将焦点更改为android中的下一个编辑文本？

Question

用户只能在编辑文本中输入一个数字.如果他在edtText1中输入值,我希望光标自动移动到edtText2,依此类推.用户可以编辑他/她已经输入的文本.我尝试了以下方式.

    edtPasscode1.setOnKeyListener(new OnKeyListener() {

        @Override
        public boolean onKey(View v, int keyCode, KeyEvent event) {
            // TODO Auto-generated method stub
            if (edtPasscode1.getText().length() == 1)
                edtPasscode2.requestFocus();
            return false;
        }
    });

    edtPasscode2.setOnKeyListener(new OnKeyListener() {

        @Override
        public boolean onKey(View v, int keyCode, KeyEvent event) {
            // TODO Auto-generated method stub
            if (edtPasscode2.getText().length() == 1)
                edtPasscode3.requestFocus();
            return false;
        }
    });

    edtPasscode3.setOnKeyListener(new OnKeyListener() {

        @Override
        public boolean onKey(View v, int keyCode, KeyEvent event) {
            // TODO Auto-generated method stub
            if (edtPasscode3.getText().length() == 1)
                edtPasscode4.requestFocus();
            return false;
        }
    });

如果用户编辑文本,光标将移动到其他一些editTexts并且不能按照需要工作.我怎样才能实现上述目标？

Answer 1

尝试使用TextWatcher而不是onKeyListener

B'coz如果想编辑你的密码,那么TextWatcher会给你更多的方法来处理..

编辑: -

StringBuilder sb=new StringBuilder();

         edtPasscode1.addTextChangedListener(new TextWatcher() {
             public void onTextChanged(CharSequence s, int start, int before, int count) {
                 // TODO Auto-generated method stub
                 if(sb.length()==0&edtPasscode1.length()==1)
                 {
                     sb.append(s);
                     edtPasscode1.clearFocus();
                     edtPasscode2.requestFocus();
                     edtPasscode2.setCursorVisible(true);

                 }
             }

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

                 if(sb.length()==1)
                 {

                     sb.deleteCharAt(0);

                 }

             }

             public void afterTextChanged(Editable s) {
                 if(sb.length()==0)
                 {

                     edtPasscode1.requestFocus();
                 }

             }
         });

希望这项工作.

Answer 2

设置android:maxLength="1"为ExitTextxml中的所有内容

请尝试以下代码

edtxt1 = (EditText) findViewById(R.id.edtxt_phonenumber_one);
        edtxt2 = (EditText) findViewById(R.id.edtxt_phonenumber_two);
        edtxt3 = (EditText) findViewById(R.id.edtxt_phonenumber_three);

        edtxt1.addTextChangedListener(new TextWatcher() {
            public void afterTextChanged(Editable s) {

                if (s.length() ==1) {
                    edtxt2.requestFocus();
                }

            }

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

            public void onTextChanged(CharSequence s, int start, int before,
                    int count) {
            }
        });

        edtxt2.addTextChangedListener(new TextWatcher() {
            public void afterTextChanged(Editable s) {
                if (s.length() == 1) {
                    edtxt3.requestFocus();
                }

            }

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

            }

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

            }
        });
        edtxt3.addTextChangedListener(new TextWatcher() {
            public void afterTextChanged(Editable s) {
                if (s.length() == 1) {
                    edtxt1.requestFocus();
                }

            }

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

            }

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

            }
        });

这应该工作