Adding the same context menu to multiple activities

Question

I'm trying to figure out how to include common pieces of code in multiple activities.

More specifically, I have a context menu that I would like to include in several activities. I saw this, but just don't understand how to extend to multiple activities. http://developer.android.com/guide/topics/ui/menus.html

I have this set up as Menu.java

    public class Menu extends Activity{

    // bottom menus
    public static final int Menu1 = 1;
    public static final int Menu2 = 2;
    public static final int Menu3 = 3;
    public static final int Menu4 = 4;
    public static final int Menu5 = 5;
    public static final int Menu6 = 6;
    public static final int Menu7 = 7;


    // / Creates the menu items
    public boolean onCreateOptionsMenu(Menu menu) {

        menu.add(0, Menu3, 0, "Create Profile").setIcon(
                this.getResources().getDrawable(R.drawable.ic_menu_add));
        menu.add(0, Menu5, 0, "Log In").setIcon(
                this.getResources().getDrawable(R.drawable.ic_menu_login));
        menu.add(0, Menu2, 0, "Settings").setIcon(
                this.getResources().getDrawable(R.drawable.ic_menu_preferences));
        menu.add(0, Menu4, 0, "About").setIcon(
                this.getResources().getDrawable(R.drawable.ic_menu_help));
        menu.add(0, Menu1, 0, "Report A Bug").setIcon(
                this.getResources().getDrawable(R.drawable.ic_menu_start_conversation));
        menu.add(0, Menu6, 0, "New Stuff").setIcon(
                this.getResources().getDrawable(R.drawable.ic_menu_view));
        return true;
    }



    private MenuItem add(int i, int menu32, int j, String string) {
        // TODO Auto-generated method stub
        return null;
    }



    // Handles item selections from preference menu
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case Menu1:
            startActivity(new Intent(this, Bug.class));
            return true;
        case Menu2:
            startActivity(new Intent(this, EditPreferences.class));
            return true;
        case Menu3:
            startActivity(new Intent(this, CreateAccount.class));
            return true;
        case Menu4:
            startActivity(new Intent(this, About.class));
            return true;
        case Menu5:
            startActivity(new Intent(this, Login.class));
            return true;
        case Menu6:
            startActivity(new Intent(this, NewAdditions.class));
            return true;
        }

        return false;
    }


}

Answer 1

if you want to add same functionality in more than 1 activity than create 1 common activity like BaseActivity and extend that activity will include that common functions in your inherited all activities

for example i have called checklogin function , you can put your menu code here,

public class BaseActivity extends Activity {

      @Override
     protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     settings = getSharedPreferences(PREFS_NAME, 0);
        if (IsFullScreen) {
           requestWindowFeature(Window.FEATURE_NO_TITLE);
           getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);
        }

        this.CheckLogin();
     }

    // Check login function
    // Your menu code

  }

now you can extend it in your activities

public class MainScreen extends BaseActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);

    this.setContentView(R.layout.mainscreen);

   }

}

Answer 2

You can define a menu in an xml file and then load the menu in onCreateOptionsMenu. You will still need to handle each menu item in each activity. You could also create a BaseActivity class that handles the menu stuff that each Activity could extend.

<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:id="@+id/about" android:title="About"
        android:icon="@drawable/ic_menu_about"/>
    <item android:id="@+id/search"
          android:icon="@drawable/ic_menu_search" android:title="Search"></item>
    <item android:id="@+id/my_location"
          android:title="My Location"
          android:icon="@drawable/ic_menu_mylocation">
    </item>
</menu>


public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.options_menu, menu);
        return super.onCreateOptionsMenu(menu);
    }