工具栏菜单项单击片段

Question

我知道有人问过这个问题，但在看了那些答案后我无法解决我的问题。我有一个带有片段的 Activity。在片段中，我添加了工具栏，我想处理来自片段的工具栏菜单项单击事件。

在菜单中，我添加了一个共享按钮。我收到向上导航（箭头主页按钮）的点击事件回调，但我的片段中没有收到共享按钮的点击事件回调。

可以指出我在这里做错了什么吗？

menu.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" 
     tools:context="com.rahul.haridasasampada.details.DescriptionActivity">
     <item
         android:id="@+id/action_share"
         android:title="Share"
         android:orderInCategory="100"
         app:showAsAction="always"           
         app:actionProviderClass="android.support.v7.widget.ShareActionProvider"/>
 </menu>

我已将工具栏添加到片段布局中。我的 Activity 的代码 -

public class DescriptionActivity extends ActionBarActivity {



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_description);

        if (savedInstanceState == null) {
            Article articleExtra = (Article) getIntent().getParcelableExtra(DescriptionFragment.ARGS_EXTRA);
            DescriptionFragment descriptionFragment = DescriptionFragment.newInstance(articleExtra);
            getSupportFragmentManager().beginTransaction()
                    .add(R.id.container, descriptionFragment)
                    .commit();
        }
    }

    @Override
    protected void onResume() {
        super.onResume();
        getSupportActionBar().setTitle(R.string.app_name_in_kannada);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_description, menu);
        Log.d("debug", "activity : onCreateOptionsMenu");
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()){
            case android.R.id.home:
                Log.d("debug","activity: action home has clicked");
                onBackPressed();
                return false;
            case R.id.action_share:
                Log.d("debug","activity: action share has clicked");
                return false;
        }

        return super.onOptionsItemSelected(item);
    }


}

我的片段代码 -

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

@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    ActionBarActivity actionBarActivity = (ActionBarActivity) getActivity();
    Toolbar toolbar = (Toolbar) getView().findViewById(R.id.toolbar_actionbar);
    actionBarActivity.setSupportActionBar(toolbar);
    toolbar.setOnMenuItemClickListener(this);
    toolbar.inflateMenu(R.menu.menu_description);
}

@Override
public boolean onMenuItemClick(MenuItem menuItem) {
    switch (menuItem.getItemId()) {
        case R.id.action_share:
            if (menuItem.getItemId() == R.id.action_share)
                Log.d("debug","action share has clicked");
            return true;
    }
    return false;
}

@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    super.onCreateOptionsMenu(menu, inflater);
    Log.d("debug", "fragment : onCreateOptionsMenu");
    MenuItem shareMenuItem = menu.findItem(R.id.action_share);
    mShareActionProvider =(ShareActionProvider)MenuItemCompat.getActionProvider(shareMenuItem);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()){
        case android.R.id.home:
            Log.d("debug","fragment : action home has clicked");
            return true;
        case R.id.action_share:
            Log.d("debug","fragment: action share has clicked");
            return true;
    }
    return super.onOptionsItemSelected(item);
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    View detailFragmentView = inflater.inflate(R.layout.fragment_description, null);

    return detailFragmentView;
}

Answer 1

您应该从 activity class 中获取指针工具栏并在片段 class 中扩充菜单。

你可以看看这个例子：

 @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        activity = ((DescriptionActivity ) getActivity());
        Toolbar tollbar=getView.findViewById(R.id.your_toolbar);
        activity.setSupportActionBar(toolbar);
        activity.toolbar.inflateMenu(R.menu.menu_search); 
        activity.toolbar.setOnMenuItemClickListener(this);     

    }



@Override
public boolean onMenuItemClick(MenuItem menuItem) {
    switch (menuItem.getItemId()) {
        case R.id.action_search:              
            break;
    }
    return false;
}

Answer 2

来自 Android 文档，Fragment：

public void onCreateOptionsMenu (Menu menu, MenuInflater inflater)

Initialize the contents of the Activity's standard options menu. You should place your menu items in to menu. For this method to be called, you must have first called setHasOptionsMenu(boolean).

所以你想在Fragment中控制actionbar菜单，那么你必须在Fragment的onCreate(...)中更好地调用setHasOptionsMenu方法：

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

同样重要的是，你不应该同时使用 inflateMenu 和 onCreateOptionsMenu 来实现相同的 ToolBar，inflateMenu 是独立的，没有将 ToolBar 设置为ActionBar.

建议：

在 Activity 中保留一个 ToolBar 作为您的应用程序的 ActionBar，另一个 ToolBar 独立于 Fragment.

希望对您有所帮助！

Answer 3

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) 
 {
   View v = inflater.inflate(R.layout.training1_fragment, container, 
              false);

       setHasOptionMenu(true);

       return v;
 }

@Override
 public boolean onOptionsItemSelected(MenuItem item) {
 switch (item.getItemId()) {
    case R.id.action_save : 
       {
       //Write here what to do you on click
        return true;
     }
   }
  return super.onOptionsItemSelected(item);
 }

Answer 4

import android.support.v7.widget.Toolbar;
import android.view.MenuItem;


public class MyFragment extends Fragment implements Toolbar.OnMenuItemClickListener {


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

        Toolbar toolbar= (Toolbar) getActivity().findViewById(R.id.toolbar);
        toolbar.inflateMenu(R.menu.menu_main);
        toolbar.setOnMenuItemClickListener(this);

        return rootView;
    }


    @Override
    public boolean onMenuItemClick(MenuItem menuItem) {
        switch (menuItem.getItemId()) {
            case R.id.action_menu:
                //do sth here
                return true;
        }
        return false;
    }

Answer 5

点击Fragment选项菜单点击请参考此 link.

工具栏菜单项单击片段

toolbar menu item click in fragments

android

android-toolbar