android--Menu and progress bar

Xml

<?XML version= "1.0" encoding= "Utf-8"?><LinearLayoutxmlns:android= "Http://schemas.android.com/apk/res/android"Xmlns:tools= "Http://schemas.android.com/tools"Android:layout_width= "Match_parent"Android:layout_height= "Match_parent"Android:paddingbottom= "@dimen/activity_vertical_margin"Android:paddingleft= "@dimen/activity_horizontal_margin"Android:paddingright= "@dimen/activity_horizontal_margin"Android:paddingtop= "@dimen/activity_vertical_margin"Tools:context= "Com.example.chenshuai.test322.UiActivity2"android:orientation= "vertical">    <ButtonAndroid:layout_width= "Match_parent"Android:layout_height= "Wrap_content"Android:text= "LONG Press trigger context menu"Android:id= "@+id/bt_changan"/>    <!--The progress bar cannot drag the circle -    <ProgressBarAndroid:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:id= "@+id/pb_1"        />    <!--progress bar Horizontal line -    <ProgressBarAndroid:layout_width= "Match_parent"Android:layout_height= "Wrap_content"style= "? Android:attr/progressbarstylehorizontal"Android:id= "@+id/pb_2"Android:max= "+"android:progress= " the"android:secondaryprogress= "The "        />    <!--The progress bar can be dragged -    <SeekBarAndroid:layout_width= "Match_parent"Android:layout_height= "Wrap_content"Android:max= "+"android:progress= " the"Android:id= "@+id/sbr_1"        />    <!--Star -    <RatingbarAndroid:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:numstars= "6"android:rating= "4.5"Android:isindicator= "true"/></LinearLayout>

Java

 Packagecom.example.chenshuai.test322;ImportAndroid.os.Bundle;Importandroid.support.v7.app.AppCompatActivity;ImportAndroid.view.ContextMenu;ImportAndroid.view.Menu;ImportAndroid.view.MenuInflater;ImportAndroid.view.MenuItem;ImportAndroid.view.SubMenu;ImportAndroid.view.View;ImportAndroid.widget.Button;ImportAndroid.widget.ProgressBar;ImportAndroid.widget.SeekBar;ImportAndroid.widget.Toast;/*** Created by Chenshuai on 2016/3/30.*/ Public classUIActivity2extendsappcompatactivity {@Overrideprotected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);        Setcontentview (R.LAYOUT.ACTIVITY_UI2); Button Bt_changan=(Button) Findviewbyid (R.id.bt_changan); Bt_changan.setoncreatecontextmenulistener ( This); //progress bar//The final life cycle is the entire class        FinalProgressBar pb_1 =(ProgressBar) Findviewbyid (r.id.pb_1); FinalProgressBar pb_2 =(ProgressBar) Findviewbyid (r.id.pb_2); SeekBar sb_1=(SeekBar) Findviewbyid (r.id.sbr_1); Sb_1.setonseekbarchangelistener (NewSeekbar.onseekbarchangelistener () {@Override Public voidOnprogresschanged (SeekBar SeekBar,intProgressBooleanFromuser)            {pb_2.setprogress (progress); }            //Start dragging@Override Public voidOnstarttrackingtouch (SeekBar SeekBar) {}//End Drag@Override Public voidOnstoptrackingtouch (SeekBar SeekBar) {pb_2.setprogress (seekbar.getprogress ()); if(seekbar.getprogress () = =Seekbar.getmax ()) {                    //set invisible gone not occupying position invisible occupy positionpb_1.setvisibility (View.gone); }                Else                {                    //Visiblepb_1.setvisibility (view.visible);    }            }        }); }    //Menu Context Menu@Override Public voidOncreatecontextmenu (ContextMenu menu, View V, contextmenu.contextmenuinfo menuinfo) {menu.add (0,1,0, "Add"); Menu.add (0, 2, 1, "modify"); Menu.add (0,3,2, "Delete"); submenu M= Menu.addsubmenu (0, 4, 3, "Sub-menu"); M.add (0,4-1,0, "Sub-menu item One"); M.add (0,4-2,1, "Sub-menu item Two"); M.add (0,4-3,2, "Sub-menu item three"); M.add (0,4-4,3, "Sub-menu item four"); Super. Oncreatecontextmenu (menu, V, menuinfo); } @Override Public Booleanoncontextitemselected (MenuItem item) {Switch(Item.getitemid ()) { Case1: Toast.maketext (UIActivity2. This, "Add feature triggered", Toast.length_short). Show ();  Break;  Case2: Toast.maketext (UIActivity2. This, "triggered delete function", Toast.length_short). Show ();  Break;  Case3: Toast.maketext (UIActivity2. This, "triggered the modification function", Toast.length_short). Show ();  Break; }        return Super. oncontextitemselected (item); } @Override//overriding methods for creating options menus     Public BooleanOncreateoptionsmenu (Menu menu) {//Add a menu item//The first type of pure coding method        /*menu.add (0, 1, 0, "add");        Menu.add (0, 2, 2, "delete"); Menu.add (0, 3, 1, "Modify");*/        //The second way to load the menu file//1. Get a menu loaderMenuinflater Menuinflater=Getmenuinflater ();        Menuinflater.inflate (R.menu.mymenu,menu); return Super. Oncreateoptionsmenu (menu); } @Override Public Booleanonoptionsitemselected (MenuItem item) {//Toast.maketext (Uiactivity2.this, "The selected menu item is" + Item.gettitle (), Toast.length_short). Show (); //respond to different functions according to menu items        Switch(Item.getitemid ()) { Case1: Toast.maketext (UIActivity2. This, "Add feature triggered", Toast.length_short). Show ();  Break;  Case2: Toast.maketext (UIActivity2. This, "triggered delete function", Toast.length_short). Show ();  Break;  Case3: Toast.maketext (UIActivity2. This, "triggered the modification function", Toast.length_short). Show ();  Break;  CaseR.id.it1:toast.maketext (UIActivity2. This, "triggered removal of a feature", Toast.length_short). Show ();  Break;  CaseR.id.it2:toast.maketext (UIActivity2. This, "triggered add a feature", Toast.length_short). Show ();  Break; }        return Super. onoptionsitemselected (item); }}

android--Menu and progress bar