Menü nicht angezeigt in der app

Für einige Grund mein Menü Aktion verschwand in meinem Android-Studio app. Ich bin nach einem tutorial zu lernen, wie zum erstellen einer android-app, aber ich landete mit diesem problem.

Tutorial, das ich verwende atm: http://www.raywenderlich.com/56109/make-first-android-app-part-2

Dies ist, was mein main.xml sieht aus wie:

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- Share item -->
    <item
        android:id="@+id/menu_item_share"
        android:showAsAction="ifRoom"
        android:title="Share"
        android:actionProviderClass= "android.widget.ShareActionProvider" />
</menu>

menu_main.xml:

<!-- Defines the menu item that will appear on the Action Bar in MainActivity -->
<menu xmlns:tools="http://schemas.android.com/tools"
    xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- Share item -->
    <item
        android:id="@+id/menu_item_share"
        android:showAsAction="ifRoom"
        android:title="Share"
        android:actionProviderClass= "android.widget.ShareActionProvider"
        tools:ignore="AppCompatResource" />
</menu>

Was habe ich falsch gemacht in diesem code? Ich bekam keine Fehler. Und ich ziemlich viel kopieren eingefügt, das aus dem tutorial.

Ich glaube nicht, dass es meine java-code, aber noch ist es hier falls jemand denkt, dass das problem im code liegt. MainActivity.java:

package android.stefan.testappnieuw;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;

import java.util.ArrayList;


public class MainActivity extends Activity implements View.OnClickListener, AdapterView.OnItemClickListener {

    TextView mainTextView;
    Button mainButton;
    EditText mainEditText;
    ListView mainListView;
    ArrayAdapter mArrayAdapter;
    ArrayList mNameList = new ArrayList();
    android.widget.ShareActionProvider mShareActionProvider;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //1. Access the TextView defined in layout XML
        //and then set its text
        mainTextView = (TextView) findViewById(R.id.main_textview);
        mainTextView.setText("Set in Java!");
        //2. Access the Button defined in layout XML
        //and listen for it here
        mainButton = (Button) findViewById(R.id.main_button);
        mainButton.setOnClickListener(this);
        //3. Access the EditText defined in layout XML
        mainEditText = (EditText) findViewById(R.id.main_edittext);
        //4. Access the ListView
        mainListView = (ListView) findViewById(R.id.main_listview);
        //5. Set this activity to react to list items being pressed
        mainListView.setOnItemClickListener(this);

        //Create an ArrayAdapter for the ListView
        mArrayAdapter = new ArrayAdapter(this,
                android.R.layout.simple_list_item_1,
                mNameList);

        //Set the ListView to use the ArrayAdapter
        mainListView.setAdapter(mArrayAdapter);
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {

        //Inflate the menu.
        //Adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);

        //Access the Share Item defined in menu XML
        MenuItem shareItem = menu.findItem(R.id.menu_item_share);

        //Access the object responsible for
        //putting together the sharing submenu
        if (shareItem != null) {
            mShareActionProvider = (android.widget.ShareActionProvider)shareItem.getActionProvider();
        }

        //Create an Intent to share your content
        setShareIntent();

        return true;
    }

    private void setShareIntent() {

        if (mShareActionProvider != null) {

            //create an Intent with the contents of the TextView
            Intent shareIntent = new Intent(Intent.ACTION_SEND);
            shareIntent.setType("text/plain");
            shareIntent.putExtra(Intent.EXTRA_SUBJECT, "Android Development");
            shareIntent.putExtra(Intent.EXTRA_TEXT, mainTextView.getText());

            //Make sure the provider knows
            //it should work with that Intent
            mShareActionProvider.setShareIntent(shareIntent);
        }
    }

    @Override
    public void onClick(View v) {
        //Take what was typed into the EditText
        //and use in TextView
        mainTextView.setText(mainEditText.getText().toString()
                + " Hallo");
        //Also add that value to the list shown in the ListView
        mNameList.add(mainEditText.getText().toString());
        mArrayAdapter.notifyDataSetChanged();
        //6. The text you'd like to share has changed,
        //and you need to update
        setShareIntent();
    }

    @Override
    public void onItemClick(AdapterView parent, View view, int position, long id) {
        //Log the item's position and contents
        //to the console in Debug
        Log.d("omg android", position + ": " + mNameList.get(position));
    }
}

Ich habe wirklich keine Ahnung was falsch ist ich bin neu in java/android und für einige Grund die Menüleiste wird angezeigt, in dem tutorial, aber nicht für mich.

Danke fürs Lesen/helfen!

InformationsquelleAutor Stefan | 2015-01-07