Android Learning notes--Create a simple context menu ContextMenu

Example goal:

in a displayed content area, touch the screen to display a context menu, and implement listening, when the Zecai item is selected, the content of the item that the user selects.  Implementation principle:1, to the content activity needs to display the context menu content Area Registration context Menu Response2. Design context Menu Style3. How to implement context menu in activity Code:the XML content of the context menu

<?xml version= "1.0" encoding= "Utf-8"?>
<menu xmlns:android= "Http://schemas.android.com/apk/res/android" >
    <item android:id= "@+id/menu1"
        Android:title= "Menu One"
        />
    <item android:id= "@+id/menu2"
        Android:title= "Menu Two"
        />
</menu>

This section needs to be placed under the Res/menu directorya simple content area (menu departure area)

<?xml version= "1.0" encoding= "Utf-8"?>
<linearlayout xmlns:android= "Http://schemas.android.com/apk/res/android"
    Android:layout_width= "Match_parent"
    android:layout_height= "Match_parent" >
        <textview
            Android:id= "@+id/menuview"
            Android:layout_width= "Match_parent"
            android:layout_height= "Wrap_content"
            android:text= "Aaaaaaa"/>
</LinearLayout>

for simplicity, just have a label. The most important part of the activity's code, first registering the context menu response in the OnCreate method

@Override
protected void OnCreate (Bundle savedinstancestate) {
    Super.oncreate (savedinstancestate);
    Setcontentview (R.layout.context_menu);
    TextView view = (TextView) Findviewbyid (R.id.menuview);
    Registerforcontextmenu (view);
}

we first acquired the TextView area we defined and registered the context menu. ways to implement touch screen response menusOncreatecontextmenu

@Override
public void Oncreatecontextmenu (ContextMenu menu, View V, contextmenu.contextmenuinfo menuinfo) {
    Super.oncreatecontextmenu (menu, V, menuinfo);
    Menuinflater menuinflater = Getmenuinflater ();
    Menuinflater.inflate (R.menu.my_menu, menu);
}

When selecting a menu, a response is required, which is oncontextitemselected

@Override
public boolean oncontextitemselected (MenuItem item) {
    Switch (Item.getitemid ()) {
        Case R.ID.MENU1:
            Toast.maketext (This,
                    "Select Menu One",
                    Toast.length_short). Show ();
            return true;
        Case R.ID.MENU2:
            Toast.maketext (This,
                    "Select Menu Two",
                    Toast.length_short). Show ();
            return true;
        Default
            return super.oncontextitemselected (item);
    }
}

when the menu is selected, the user is prompted to choose which menu to use.

Android Learning notes--Create a simple context menu ContextMenu