Android 彈出輸入框

final EditText inputServer = new EditText(SettingActivity.this);
                AlertDialog.Builder builder = new AlertDialog.Builder(SettingActivity.this);
                builder.setTitle("輸入密碼").setIcon(android.R.drawable.ic_dialog_info).setView(inputServer)
                        .setNegativeButton("取消", new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                dialog.dismiss();
                            }
                        });
                builder.setPositiveButton("確定", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int which) {
                        String text = inputServer.getText().toString();
                   
                });
                builder.show();
            }
        });

android 彈出輸入框，獲取輸入框值，帶確定 取消 按鈕