Custom number plus minus controls

1_ requirements for custom digital plus and minus controls

Create Module-numberaddsubview

A_ input can only be a number, and cannot be entered by the keyboard

B_ manipulating numbers with the Add and subtract buttons

C_ Monitor plus minus button

D_ array with minimum and maximum limits

E_ Custom Properties

2. Provide an interface to allow external monitoring to hear the changes in numbers

1_ Setting the interface

@Overridepublic void OnClick (View v) {if (V.getid () = = r.id.btn_sub) {                //toast.maketext (mcontext, "minus", toast.length_ Short). Show (); Subnum (); if (onbuttonclicklistenter! = null) {Onbuttonclicklistenter.onbuttonsubclick (V, Value);}} else if (v.getid () = = R.id.btn_add) {                //toast.maketext (mcontext, "plus", Toast.length_short). Show (); Addnum (); if ( Onbuttonclicklistenter! = null) {Onbuttonclicklistenter.onbuttonaddclick (V, Value);}}} Public interface Onbuttonclicklistenter {/** * When the Add button is clicked, callback the method * * @param view * @param value */public void ONBUTTONADDCL  Ick (view view, int value);/** * When the decrease button is clicked, the callback method * * @param view * @param value */public void Onbuttonsubclick (view view, int value);} Private Onbuttonclicklistenter onbuttonclicklistenter;public void Setonbuttonclicklistenter (OnButtonClickListenter Onbuttonclicklistenter) {this.onbuttonclicklistenter = Onbuttonclicklistenter;}

2_ Monitoring Changes

public class Mainactivity extends Appcompatactivity {    private numberaddsubview nb_addsub_view;    @Override    protected void onCreate (Bundle savedinstancestate) {        super.oncreate (savedinstancestate);        Setcontentview (r.layout.activity_main);        Nb_addsub_view = (Numberaddsubview) Findviewbyid (R.id.nb_addsub_view);        Nb_addsub_view.setonbuttonclicklistenter (New Numberaddsubview.onbuttonclicklistenter () {            @Override            public void Onbuttonaddclick (view view, int value) {                toast.maketext (mainactivity.this, "AddClick vaule==" +value, Toast.length_short). Show ();            }            @Override public            void Onbuttonsubclick (view view, int value) {                toast.maketext (mainactivity.this, "Subclick vaule== "+value,toast.length_short). Show ();            }}        );}    }

　　

　　

GitHub Full code: Https://github.com/ganchuanpu/NumberAddSubView

Custom number plus minus controls