Multi-select button (CheckBox)

Today we are introducing the CheckBox multi box:

1.Activity

//check box, [base control]---State toggle control Compoundbutton and its subclasses checkbox, RadioButton, ToggleButton, switch event Listener and scenario usage Public classCheckboxactivityextendsActivityImplementscompoundbutton.oncheckedchangelistener{Privatecontext Context; PrivateCheckBox Sleepcheckbox; PrivateCheckBox Dadoudoucheckbox; PrivateCheckBox Gamecheckbox; PrivateCheckBox Shoppingcheckbox; PrivateCheckBox Filmcheckbox; PrivateCheckBox Sportcheckbox; PrivateButton Submitbutton; @Overrideprotected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);                Setcontentview (R.layout.check_box);        Init ();            Addaction (); }        Private voidinit () {Context= This; Sleepcheckbox=(CheckBox) Findviewbyid (R.ID.SLEEPCHECKBOXID); Dadoudoucheckbox=(CheckBox) Findviewbyid (R.ID.DADOUDOUCHECKBOXID); Gamecheckbox=(CheckBox) Findviewbyid (R.ID.GAMECHECKBOXID); Shoppingcheckbox=(CheckBox) Findviewbyid (R.ID.SHOPPINGCHECKBOXID); Filmcheckbox=(CheckBox) Findviewbyid (R.ID.FILMCHECKBOXID); Sportcheckbox=(CheckBox) Findviewbyid (R.ID.SPORTCHECKBOXID); Submitbutton=(Button) Findviewbyid (R.id.submitbuttonid); }        Private voidAddaction () {Sleepcheckbox.setoncheckedchangelistener ( This); Dadoudoucheckbox.setoncheckedchangelistener ( This); Gamecheckbox.setoncheckedchangelistener ( This); Shoppingcheckbox.setoncheckedchangelistener ( This); Filmcheckbox.setoncheckedchangelistener ( This); Sportcheckbox.setoncheckedchangelistener ( This); Submitbutton.setonclicklistener (NewView.onclicklistener () { Public voidOnClick (View v) {//String literal constant//stringbuffer string variable (thread safe)//StringBuilder string variable (non-thread safe)StringBuilder SB =NewStringBuilder ("Your interest is:"); //Mystringbuilder.insert (6, "Beautiful"); //Mystringbuilder.remove (5,7); //mystringbuilder.replace ('! ', '? '); //The code example specifies that the Mystringbuilder object can be expanded to a maximum of 25 blanks. //Stringbuildermystringbuilder = new StringBuilder ("Hello world!", +);                if(sleepcheckbox.ischecked ()) {Sb.append (Sleep); }                if(dadoudoucheckbox.ischecked ()) {Sb.append ("Hit the peas."); }                if(gamecheckbox.ischecked ()) {Sb.append (Game); }                if(shoppingcheckbox.ischecked ()) {Sb.append (Shopping); }                if(filmcheckbox.ischecked ()) {Sb.append (Movie); }                if(sportcheckbox.ischecked ()) {Sb.append (Movement);            } toast.maketext (Context, sb.tostring (), Toast.length_long). Show ();    }        }); } @Override Public voidOnCheckedChanged (Compoundbutton Buttonview,BooleanisChecked) {        intID =Buttonview.getid (); Switch(ID) { CaseR.id.sleepcheckboxid:if(isChecked) {toast.maketext (context,"You chose to sleep.", Toast.length_short). Show (); }Else{toast.maketext (context,"You have deselected \" Sleep \ ", Toast.length_short). Show (); }             Break;  CaseR.id.dadoudoucheckboxid:if(isChecked) {toast.maketext (context,"You chose \" hit the Peas. ", Toast.length_short). Show (); }Else{toast.maketext (context,"You have deselected \" hit the Peas. ", Toast.length_short). Show (); }             Break;  CaseR.id.gamecheckboxid:if(isChecked) {toast.maketext (context,"You have chosen \" Game \ "", Toast.length_short). Show (); }Else{toast.maketext (context,"You have deselected \" game \ "", Toast.length_short). Show (); }             Break;  CaseR.id.shoppingcheckboxid:if(isChecked) {toast.maketext (context,"You have selected \" Shopping "", Toast.length_short). Show (); }Else{toast.maketext (context,"You have deselected \" shopping \ ", Toast.length_short). Show (); }             Break;  CaseR.id.filmcheckboxid:if(isChecked) {toast.maketext (context,"You chose the movie \" ", Toast.length_short). Show (); }Else{toast.maketext (context,"You have deselected \" movie \ "", Toast.length_short). Show (); }             Break;  CaseR.id.sportcheckboxid:if(isChecked) {toast.maketext (context,"You chose the sport.", Toast.length_short). Show (); }Else{toast.maketext (context,"You have deselected \" Sport \ "", Toast.length_short). Show (); }             Break; }    }    }

The 2.xml files are as follows:

<?xml version= "1.0" encoding= "Utf-8"?><!--check box page--><linearlayout xmlns:android= "/http" Schemas.android.com/apk/res/android "Android:layout_width= "Match_parent"Android:layout_height= "Match_parent"android:orientation= "Vertical"android:padding= "5DP" > <TextView android:layout_width= "Match_parent"Android:layout_height= "Wrap_content"Android:text= "Interest:"android:textsize= "20sp"/> <LinearLayout android:layout_width= "Match_parent"Android:layout_height= "Wrap_content"android:orientation= "Horizontal" > <CheckBox Android:id= "@+id/sleepcheckboxid"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:text= "Sleeping"/> <CheckBox Android:id= "@+id/dadoudoucheckboxid"Android:layout_width= "85DP"Android:layout_height= "Wrap_content"Android:text= "Hit the Peas"/> <CheckBox Android:id= "@+id/gamecheckboxid"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:text= "Game"/> </LinearLayout> <LinearLayout android:layout_width= "Match_parent"Android:layout_height= "Wrap_content"android:orientation= "Horizontal" > <CheckBox Android:id= "@+id/shoppingcheckboxid"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:text= "Shopping"/> <CheckBox Android:id= "@+id/filmcheckboxid"Android:layout_width= "85DP"Android:layout_height= "Wrap_content"Android:text= "movie"/> <CheckBox Android:id= "@+id/sportcheckboxid"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:text= "Sport"/> </LinearLayout> <Button Android:id= "@+id/submitbuttonid"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"android:layout_gravity= "Right"Android:text= "OK"android:textsize= "20SP"/></linearlayout>

3. as follows:

Multi-select button (CheckBox)