Question

我刚拿了开发者android网站共享的示例代码。我想创建一个选项卡式菜单以及操作栏中的选项菜单。我希望我的活动将导航标签与操作栏菜单一起使用。我没有得到动作栏菜单。但我已经看到了具有导航标签的应用程序以及操作栏菜单项。如果有人帮助我，那将会有很大的帮助。

MainActivity Class

public class MainActivity extends FragmentActivity implements ActionBar.TabListener {
AppSectionsPagerAdapter mAppSectionsPagerAdapter;

/**
 * The {@link ViewPager} that will display the three primary sections of the app, one at a
 * time.
 */
ViewPager mViewPager;

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    // Create the adapter that will return a fragment for each of the three primary sections
    // of the app.
    mAppSectionsPagerAdapter = new AppSectionsPagerAdapter(getSupportFragmentManager());

    // Set up the action bar.
    final ActionBar actionBar = getActionBar();

    // Specify that the Home/Up button should not be enabled, since there is no hierarchical
    // parent.
    actionBar.setHomeButtonEnabled(true);

    // Specify that we will be displaying tabs in the action bar.
    actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
    // Set up the ViewPager, attaching the adapter and setting up a listener for when the
    // user swipes between sections.
    mViewPager = (ViewPager) findViewById(R.id.pager);
    mViewPager.setAdapter(mAppSectionsPagerAdapter);
    mViewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
        @Override
        public void onPageSelected(int position) {
            // When swiping between different app sections, select the corresponding tab.
            // We can also use ActionBar.Tab#select() to do this if we have a reference to the
            // Tab.
            actionBar.setSelectedNavigationItem(position);
        }
    });

    // For each of the sections in the app, add a tab to the action bar.
    for (int i = 0; i < mAppSectionsPagerAdapter.getCount(); i++) {
        // Create a tab with text corresponding to the page title defined by the adapter.
        // Also specify this Activity object, which implements the TabListener interface, as the
        // listener for when this tab is selected.
        actionBar.addTab(
                actionBar.newTab()
                        .setText(mAppSectionsPagerAdapter.getPageTitle(i))
                        .setTabListener(this));
    }
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {


    getMenuInflater().inflate(R.menu.template_actvity, menu);
    Toast.makeText(getApplicationContext(), "Indie onCreateOptionsMenu", Toast.LENGTH_SHORT).show();

    return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    return super.onOptionsItemSelected(item);
}

@Override
public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
}

@Override
public void onTabSelected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
    // When the given tab is selected, switch to the corresponding page in the ViewPager.
    mViewPager.setCurrentItem(tab.getPosition());
}

@Override
public void onTabReselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
}

/**
 * A {@link FragmentPagerAdapter} that returns a fragment corresponding to one of the primary
 * sections of the app.
 */
public static class AppSectionsPagerAdapter extends FragmentPagerAdapter {

    public AppSectionsPagerAdapter(FragmentManager fm) {
        super(fm);
    }

    @Override
    public Fragment getItem(int i) {
        switch (i) {
            case 0:
                // The first section of the app is the most interesting -- it offers
                // a launchpad into the other demonstrations in this example application.
                return new LaunchpadSectionFragment();

            default:
                // The other sections of the app are dummy placeholders.
                Fragment fragment = new DummySectionFragment();
                Bundle args = new Bundle();
                args.putInt(DummySectionFragment.ARG_SECTION_NUMBER, i + 1);
                fragment.setArguments(args);
                return fragment;
        }
    }

    @Override
    public int getCount() {
        return 3;
    }

    @Override
    public CharSequence getPageTitle(int position) {
        return "Section " + (position + 1);
    }
}

/**
 * A fragment that launches other parts of the demo application.
 */
public static class LaunchpadSectionFragment extends Fragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fragment_section_launchpad, container, false);

        // Demonstration of a collection-browsing activity.
        rootView.findViewById(R.id.demo_collection_button)
                .setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View view) {
                        Intent intent = new Intent(getActivity(), CollectionDemoActivity.class);
                        startActivity(intent);
                    }
                });

        // Demonstration of navigating to external activities.
        rootView.findViewById(R.id.demo_external_activity)
                .setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View view) {
                        // Create an intent that asks the user to pick a photo, but using
                        // FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET, ensures that relaunching
                        // the application from the device home screen does not return
                        // to the external activity.
                        Intent externalActivityIntent = new Intent(Intent.ACTION_PICK);
                        externalActivityIntent.setType("image/*");
                        externalActivityIntent.addFlags(
                                Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
                        startActivity(externalActivityIntent);
                    }
                });

        return rootView;
    }
}

/**
 * A dummy fragment representing a section of the app, but that simply displays dummy text.
 */
public static class DummySectionFragment extends Fragment {

    public static final String ARG_SECTION_NUMBER = "section_number";

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fragment_section_dummy, container, false);
        Bundle args = getArguments();
        ((TextView) rootView.findViewById(android.R.id.text1)).setText(
                getString(R.string.dummy_section_text, args.getInt(ARG_SECTION_NUMBER)));
        return rootView;
    }
}

}

Activity_main XML文件

<android.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent" />

template_activity菜单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/addTemplate"
    android:orderInCategory="100"
    android:icon="@drawable/ic_action_new"
    android:title="Add Template"
    app:showAsAction="always"/>

Answer 1

以下是一些尝试：

我认为您在template_activity.xml中记得包含</menu>标记？（您可能只是错过了复制+将其粘贴到您的问题中）。
尝试在您的活动中使用此代码：

@Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); getMenuInflater().inflate(R.menu.template_activity, menu); return true; }

注意：您的getMenuInflater().inflate(R.menu.template_actvity, menu);行可能也可能出现拼写错误。具体来说，你错误拼写了＃34;活动＆＃34;。

编辑：为菜单XML文件尝试以下XML：

<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    tools:context=".MainActivity" >
  <item
      android:id="@+id/addTemplate"
      android:orderInCategory="1"
      android:icon="@drawable/ic_action_new"
      android:title="Add Template"
      android:showAsAction="always"/>
</menu>

至于获得＆＃34;三点＆＃34;溢出按钮，我现在意识到你正在使用带有内置菜单按钮的设备。有意这些设备不包括溢出按钮。但是，如果您仍想实现此功能，可以阅读更多相关信息here。

使用导航选项卡在android中添加选项菜单

1 个答案: