<EditText

            android:id="@+id/et_setting_printer_edit_info_ip"

            android:layout_width="200dp"

            android:layout_height="35dp"

            android:layout_alignParentRight="true"

            android:layout_marginRight="30dp"

            android:textColor="#898989"

            android:textSize="16sp"

            android:textColorHint="#30898989"

            android:gravity="bottom|center_horizontal"

            android:focusable="true"

            android:background="@android:color/transparent"

            android:textCursorDrawable="@null"

            android:cursorVisible="true"

            android:inputType="number"

            android:digits="0123456789."

            />

EditText mEditText = (EditText)findViewById(R.id.MyEditText);

String digits = "0123456789.";

mEditText.setKeyListener(DigitsKeyListener.getInstance(digits));

mEditText.setInputType(InputType.TYPE_CLASS_NUMBER);