Android Fragments에 작업 표시 줄 옵션 메뉴를 추가하는 방법

Android Fragments에 작업 표시 줄 옵션 메뉴를 추가하는 방법

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Android Fragments에 옵션 메뉴를 추가하려고합니다 . ActionBar옵션 메뉴가 내 조각에 표시되지 않습니다.

여기에 내 코드가 있으며 onCreateOptionsMenu()및 onOptionSelected()기능 이 모두 있습니다. 내 코드에 오류가 표시되지 않습니다. 그러나 옵션 메뉴가 표시되지 않습니다.

package org.reachout;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;

import org.general.R;

public class ViewMessageFragment extends Fragment {

    /* (non-Javadoc)
     * @see android.support.v4.app.Fragment#onCreateView(android.view.LayoutInflater, android.view.ViewGroup, android.os.Bundle)
     */
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        if (container == null) {
            // We have different layouts, and in one of them this
            // fragment's containing frame doesn't exist.  The fragment
            // may still be created from its saved state, but there is
            // no reason to try to create its view hierarchy because it
            // won't be displayed.  Note this is not needed -- we could
            // just run the code below, where we would create and return
            // the view hierarchy; it would just never be used.
            return null;
        }
        return (LinearLayout)inflater.inflate(R.layout.viewmessages_tab_fragment_layout, container, false);
    }

    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        // TODO Auto-generated method stub
        super.onCreateOptionsMenu(menu, inflater);
        inflater.inflate(R.menu.askexperts_menu, menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
       // handle item selection
       switch (item.getItemId()) {
          case R.id.action_settings:
             // do s.th.
             return true;
          default:
             return super.onOptionsItemSelected(item);
       }
    }   

}

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당신은 호출 할 필요가 setHasOptionsMenu(true)에서 onCreate().

이전 버전과의 호환성을 위해이 호출을 가능한 한 늦게 onCreate()또는 그 이후에 배치 onActivityCreated()하는 것이 좋습니다.

참조 : https://developer.android.com/reference/android/app/Fragment.html#setHasOptionsMenu(boolean)

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나는 대답에 늦었지만 이것이 여기에 언급되지 않은 또 다른 해결책이라고 생각합니다.

Step 1: Make a xml of menu which you want to add like I have to add a filter action on my action bar so I have created a xml filter.xml. The main line to notice is android:orderInCategory this will show the action icon at first or last wherever you want to show. One more thing to note down is the value, if the value is less then it will show at first and if value is greater then it will show at last.

filter.xml

<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools" >


    <item
        android:id="@+id/action_filter"
        android:title="@string/filter"
        android:orderInCategory="10"
        android:icon="@drawable/filter"
        app:showAsAction="ifRoom" />


</menu>

Step 2: In onCreate() method of fragment just put the below line as mentioned, which is responsible for calling back onCreateOptionsMenu(Menu menu, MenuInflater inflater) method just like in an Activity.

@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setHasOptionsMenu(true);
    }

Step 3: Now add the method onCreateOptionsMenu which will be override as:

@Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        inflater.inflate(R.menu.filter, menu);  // Use filter.xml from step 1
    }

Step 4: Now add onOptionsItemSelected method by which you can implement logic whatever you want to do when you select the added action icon from actionBar:

@Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();
        if(id == R.id.action_filter){
            //Do whatever you want to do 
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

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in AndroidManifest.xml set theme holo like this:

<activity
android:name="your Fragment or activity"
android:label="@string/xxxxxx"
android:theme="@android:style/Theme.Holo" >

참고URL : https://stackoverflow.com/questions/18714322/how-to-add-action-bar-options-menu-in-android-fragments