无法捕获工具栏主页按钮点击事件

108
我已经使用最新的appcompat库,并将Toolbar用作操作栏。但问题是我无法捕获主页按钮/汉堡图标的点击事件。我尝试并查找了所有内容,但似乎没有找到类似的问题。
这是我的Activity类:
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    // Set up the drawer.
    navDrawerFragment = 
        (NavigationDrawerFragment) getSupportFragmentManager()
        .findFragmentById(R.id.navigation_drawer);
    navDrawerFragment.setUp(
        R.id.navigation_drawer, 
        (DrawerLayout) findViewById(R.id.drawer_layout), 
        toolbar);
}

这是我的NavigationDrawerFragment类:

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    if (savedInstanceState != null) {
        currentSelectedPosition = savedInstanceState.getInt(
            STATE_SELECTED_POSITION);
        fromSavedInstanceState = true;
    }

    // Select either the default item (0) or the last selected item.
    selectItem(currentSelectedPosition);
}

@Override
public void onActivityCreated (Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    // Indicate that this fragment would like 
    // to influence the set of actions in the action bar.
    setHasOptionsMenu(true);
}

public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        drawerListView = (ListView) inflater.inflate(
            R.layout.fragment_navigation_drawer, container, false);
        drawerListView.setOnItemClickListener(
            new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, 
                View view, int position, long id) {
                selectItem(position);
            }
        });
        //mDrawerListView.setAdapter();
        //mDrawerListView.setItemChecked(mCurrentSelectedPosition, true);
        return drawerListView;
}

public void setUp(int fragmentId, DrawerLayout drawerLayout, Toolbar toolbar) {
    fragmentContainerView = getActivity().findViewById(fragmentId);
    this.drawerLayout = drawerLayout;

    // set a custom shadow that overlays the main 
    // content when the drawer opens
    drawerLayout.setDrawerShadow(
        R.drawable.drawer_shadow, GravityCompat.START);
    // set up the drawer's list view 
    // with items and click listener

    ActionBar actionBar = getActionBar();
    actionBar.setDisplayHomeAsUpEnabled(true);
    actionBar.setHomeButtonEnabled(true);

    // ActionBarDrawerToggle ties together the the proper interactions
    // between the navigation drawer and the action bar app icon.
    drawerToggle = new ActionBarDrawerToggle(
        getActivity(), 
        drawerLayout, 
        toolbar, 
        R.string.navigation_drawer_open, 
        R.string.navigation_drawer_close) {
        public void onDrawerClosed(View view) {
            super.onDrawerClosed(view);
        }

        public void onDrawerOpened(View drawerView) {
            super.onDrawerOpened(drawerView);
        }
    };

    // If the user hasn't 'learned' about the drawer, 
    // open it to introduce them to the drawer,
    // per the navigation drawer design guidelines.
    if (!userLearnedDrawer && !fromSavedInstanceState) {
        drawerLayout.openDrawer(fragmentContainerView);
    }

    // Defer code dependent on restoration of previous instance state.
    drawerLayout.post(new Runnable() {
        @Override
        public void run() {
            drawerToggle.syncState();
        }
    });

    drawerLayout.setDrawerListener(drawerToggle);
}

@Override
public void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    outState.putInt(STATE_SELECTED_POSITION, currentSelectedPosition);
}

@Override
public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);
    // Forward the new configuration the drawer toggle component.
    drawerToggle.onConfigurationChanged(newConfig);
}

@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    super.onCreateOptionsMenu(menu, inflater);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    Log.d("cek", "item selected");
    if (drawerToggle.onOptionsItemSelected(item)) {
        Log.d("cek", "home selected");
        return true;
    }

    return super.onOptionsItemSelected(item);
}

当我点击菜单项时,日志“item selected”被调用。但是当我点击主页按钮时,它会打开导航抽屉,但日志“home selected”从未被调用。我已经在我的Activity中设置了onOptionsItemSelected方法,但它仍然没有被调用。请注意保留HTML标签。
12个回答

231

如果您想知道何时单击主页是AppCompatActivity,则应像此示例一样尝试:

首先告诉Android您要将Toolbar用作ActionBar

setSupportActionBar(toolbar);

然后通过 setDisplayShowHomeEnabled 将主页设置为可显示,像这样:

getSupportActionBar().setDisplayShowHomeEnabled(true);

最后像往常一样监听android.R.id.home上的单击事件:

@Override
public boolean onOptionsItemSelected(MenuItem menuItem) {
    if (menuItem.getItemId() == android.R.id.home) {
        Timber.d("Home pressed");
    }
    return super.onOptionsItemSelected(menuItem);
}

如果您想知道如何在不使用AppCompatActivity类的情况下,检测到导航工具栏按钮被点击时,您可以使用以下方法设置导航图标,并侦听它的点击事件。 导航图标将出现在您的Toolbar左侧,就像“home”按钮所在的位置一样。

toolbar.setNavigationIcon(getResources().getDrawable(R.drawable.ic_nav_back));
toolbar.setNavigationOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        Log.d("cek", "home selected");
    }
});

如果您想知道何时单击汉堡包并何时打开抽屉,您已经通过 onDrawerOpenedonDrawerClosed 监听了这些事件,因此您需要查看这些回调是否符合您的要求。


1
您IP地址为143.198.54.68,由于运营成本限制,当前对于免费用户的使用频率限制为每个IP每72小时10次对话,如需解除限制,请点击左下角设置图标按钮(手机用户先点击左上角菜单按钮)。 - Dark Leonhart
2
当您为工具栏设置setNavigationOnClickListener时,您会失去“本地”抽屉行为 :( - IliaEremin
7
现在我们需要一个单独的点击监听器,而以前在片段中我们可以在onOptionsItemSelected()中检查android.R.id.home吗?这真的很恼人。 - Daniel Wilson
1
关于工具栏,如果您使用setNavigationOnClickListener设置了新的NavigationOnClickListener,则可以通过使用您的ActionBarDrawerToggle再次调用setDrawerListener,在适当的时候重新启用NavDrawer。 - straya
@straya 这个让我在不断地撞墙后终于得救了。重新设置监听器是缺失的一部分。谢谢! - Osborne Cox
显示剩余5条评论

25
    mActionBarDrawerToggle = mNavigationDrawerFragment.getActionBarDrawerToggle();
    mActionBarDrawerToggle.setToolbarNavigationClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            // event when click home button
        }
    });

在我的情况下,这段代码运行得非常完美。


你真的很棒,它起作用了,我从来没有想过我能够通过DrawerToggle处理工具栏返回按钮。 - Sai
要让ActionBarDrawerToggle.setToolbarNavigationClickListener正常工作,首先必须调用以下代码:mActionBarDrawerToggle.setHomeAsUpIndicator(R.drawable.menu_icon); mActionBarDrawerToggle.setDrawerIndicatorEnabled(false); 并自行处理点击事件(打开/关闭抽屉)。 - luky

13

这就是我如何实现返回到正确的片段,否则如果您在同一级别上有多个片段,则不覆盖工具栏后退按钮的行为会返回第一个片段。

toolbar.setNavigationOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            finish();
        }
    });

在 Kotlin 中是否有“覆盖”点击方法? - Akhila
@AkhilaMadari 在 Kotlin 中可以尝试这样做:val toolbar = findViewById(R.id.toolbar) as Toolbar setSupportActionBar(toolbar) toolbar.setNavigationOnClickListener { /你想要做的事情/ finish() } - Marcos

4

我认为使用支持库21的正确解决方案如下:

// action_bar is def resource of appcompat; 
// if you have not provided your own toolbar I mean  
Toolbar toolbar = (Toolbar) findViewById(R.id.action_bar);
if (toolbar != null) {
    // change home icon if you wish
    toolbar.setLogo(this.getResValues().homeIconDrawable());
    toolbar.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            //catch here title and home icon click                          
        }                       
    });                 
}

this.getResValues().homeIconDrawable() 中,this 是谁? - LuisComS
这是一个活动。Getresvalues是我的方法,所以它在这里不相关。Setlogo接受可绘制的资源ID。 - Čikić Nenad
4
这将处理工具栏上任何位置的用户单击,我不认为这是他询问的内容。 - Mina Fawzy

2
我已经处理了导航抽屉中的返回和主页按钮,如下所示:
public class HomeActivity extends AppCompatActivity
        implements NavigationView.OnNavigationItemSelectedListener {
    private ActionBarDrawerToggle drawerToggle;
    private DrawerLayout drawerLayout;
    NavigationView navigationView;
    private Context context;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_home);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        resetActionBar();

        navigationView = (NavigationView) findViewById(R.id.navigation_view);
        navigationView.setNavigationItemSelectedListener(this);

        //showing first fragment on Start
        getSupportFragmentManager().beginTransaction().setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN).replace(R.id.content_fragment, new FirstFragment()).commit();
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        //listener for home
        if(id==android.R.id.home)
        {  
            if (getSupportFragmentManager().getBackStackEntryCount() > 0)
                onBackPressed();
            else
                drawerLayout.openDrawer(navigationView);
            return  true;
        }

        return super.onOptionsItemSelected(item);
    }

    @Override
    public void onBackPressed() {
       if (drawerLayout.isDrawerOpen(GravityCompat.START)) 
            drawerLayout.closeDrawer(GravityCompat.START);
       else 
            super.onBackPressed();
    }

    @Override
    public boolean onNavigationItemSelected(MenuItem item) {
        // Begin the transaction

        Fragment fragment = null;
        // Handle navigation view item clicks here.
        int id = item.getItemId();
        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        if (id == R.id.nav_companies_list) {
            fragment = new FirstFragment();
            // Handle the action
        } 


        // Begin the transaction
        if(fragment!=null){

            if(item.isChecked()){
                if(getSupportFragmentManager().getBackStackEntryCount()==0){
                    drawer.closeDrawers();
            }else{
                    removeAllFragments();
                    getSupportFragmentManager().beginTransaction().setTransition(FragmentTransaction.TRANSIT_FRAGMENT_CLOSE).replace(R.id.WikiCompany, fragment).commit();
                    drawer.closeDrawer(GravityCompat.START);
                }

            }else{
                removeAllFragments();
                getSupportFragmentManager().beginTransaction().setTransition(FragmentTransaction.TRANSIT_FRAGMENT_CLOSE).replace(R.id.WikiCompany, fragment).commit();
                drawer.closeDrawer(GravityCompat.START);
            }
        }

        return true;
    }

    public void removeAllFragments(){
        getSupportFragmentManager().popBackStackImmediate(null,
                FragmentManager.POP_BACK_STACK_INCLUSIVE);
    }

    public void replaceFragment(final Fragment fragment) {
        FragmentManager fragmentManager = getSupportFragmentManager();
        fragmentManager.beginTransaction().setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN)
                .replace(R.id.WikiCompany, fragment).addToBackStack("")
                .commit();
    }


    public void updateDrawerIcon() {
        final Handler handler = new Handler();
        handler.postDelayed(new Runnable() {
            @Override
            public void run() {
                try {
                    Log.i("", "BackStackCount: " + getSupportFragmentManager().getBackStackEntryCount());
                    if (getSupportFragmentManager().getBackStackEntryCount() > 0)
                        drawerToggle.setDrawerIndicatorEnabled(false);
                    else
                        drawerToggle.setDrawerIndicatorEnabled(true);
                } catch (Exception ex) {
                    ex.printStackTrace();
                }
            }
        }, 50);
    }

    public void resetActionBar()
    {
        //display home
        getSupportActionBar().setDisplayShowHomeEnabled(true);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setHomeButtonEnabled(true);
    }

    public void setActionBarTitle(String title) {
        getSupportActionBar().setTitle(title);
    }
}

在每个onViewCreated中,我都会调用以下内容:

@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    ((HomeActivity)getActivity()).updateDrawerIcon();
    ((HomeActivity) getActivity()).setActionBarTitle("List");
}

1
最简单的方法是将主页图标更改为已知图标,然后比较可绘制对象(因为android.R.id.home图标可能会因不同的api版本而有所不同)。
因此,将工具栏设置为操作栏,使用以下代码: SetSupportActionBar(_toolbar);
_toolbar.NavigationIcon = your_known_drawable_here;

   for (int i = 0; i < _toolbar.ChildCount; i++)
            {
                View v = _toolbar.GetChildAt(i);
                if (v is ImageButton)
                {
                    ImageButton imageButton = v as ImageButton;

                    if (imageButton.Drawable.GetConstantState().Equals(_bookMarkIcon.GetConstantState()))
                    {
                       //here v is the widget that contains the home  icon you can add your click events here 
                    }
                }
            }

1

我稍微修改了DrawerLayout以获取事件并能够消耗事件,例如,如果您想在详细视图中将actionToggle用作返回:

public class ListenableDrawerLayout extends DrawerLayout {

    private OnToggleButtonClickedListener mOnToggleButtonClickedListener;
    private boolean mManualCall;

    public ListenableDrawerLayout(Context context) {
        super(context);
    }

    public ListenableDrawerLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public ListenableDrawerLayout(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    /**
     * Sets the listener for the toggle button
     *
     * @param mOnToggleButtonClickedListener
     */
    public void setOnToggleButtonClickedListener(OnToggleButtonClickedListener mOnToggleButtonClickedListener) {
        this.mOnToggleButtonClickedListener = mOnToggleButtonClickedListener;
    }

    /**
     * Opens the navigation drawer manually from code<br>
     * <b>NOTE: </b>Use this function instead of the normal openDrawer method
     *
     * @param drawerView
     */
    public void openDrawerManual(View drawerView) {
        mManualCall = true;
        openDrawer(drawerView);
    }

    /**
     * Closes the navigation drawer manually from code<br>
     * <b>NOTE: </b>Use this function instead of the normal closeDrawer method
     *
     * @param drawerView
     */
    public void closeDrawerManual(View drawerView) {
        mManualCall = true;
        closeDrawer(drawerView);
    }


    @Override
    public void openDrawer(View drawerView) {

        // Check for listener and for not manual open
        if (!mManualCall && mOnToggleButtonClickedListener != null) {

            // Notify the listener and behave on its reaction
            if (mOnToggleButtonClickedListener.toggleOpenDrawer()) {
                return;
            }

        }
        // Manual call done
        mManualCall = false;

        // Let the drawer layout to its stuff
        super.openDrawer(drawerView);
    }

    @Override
    public void closeDrawer(View drawerView) {

        // Check for listener and for not manual close
        if (!mManualCall && mOnToggleButtonClickedListener != null) {

            // Notify the listener and behave on its reaction
            if (mOnToggleButtonClickedListener.toggleCloseDrawer()) {
                return;
            }

        }
        // Manual call done
        mManualCall = false;

        // Let the drawer layout to its stuff
        super.closeDrawer(drawerView);
    }

    /**
     * Interface for toggle button callbacks
     */
    public static interface OnToggleButtonClickedListener {

        /**
         * The ActionBarDrawerToggle has been pressed in order to open the drawer
         *
         * @return true if we want to consume the event, false if we want the normal behaviour
         */
        public boolean toggleOpenDrawer();

        /**
         * The ActionBarDrawerToggle has been pressed in order to close the drawer
         *
         * @return true if we want to consume the event, false if we want the normal behaviour
         */
        public boolean toggleCloseDrawer();
    }

}

1

对于任何寻找Xamarin实现的人(因为C#中的事件处理方式不同),我只需创建了以下NavClickHandler类:

public class NavClickHandler : Java.Lang.Object, View.IOnClickListener
{
    private Activity mActivity;
    public NavClickHandler(Activity activity)
    {
        this.mActivity = activity;
    }
    public void OnClick(View v)
    {
        DrawerLayout drawer = (DrawerLayout)mActivity.FindViewById(Resource.Id.drawer_layout);
        if (drawer.IsDrawerOpen(GravityCompat.Start))
        {
            drawer.CloseDrawer(GravityCompat.Start);
        }
        else
        {
            drawer.OpenDrawer(GravityCompat.Start);
        }
    }
}

然后,像这样分配一个自定义汉堡菜单按钮:

        SupportActionBar.SetDisplayHomeAsUpEnabled(true);
        SupportActionBar.SetDefaultDisplayHomeAsUpEnabled(false);
        this.drawerToggle.DrawerIndicatorEnabled = false;
        this.drawerToggle.SetHomeAsUpIndicator(Resource.Drawable.MenuButton);

最后,将抽屉菜单切换器分配给我之前创建的类类型的ToolbarNavigationClickListener:
        this.drawerToggle.ToolbarNavigationClickListener = new NavClickHandler(this);

然后您将拥有一个自定义菜单按钮,并处理点击事件。

1
尝试这段代码。
@Override
public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();
    if(id == android.R.id.home){
        //You can get 
    }
    return super.onOptionsItemSelected(item);
}

将以下代码添加到您的onCreate()方法中

ActionBar ab = getSupportActionBar();
    ab.setDisplayHomeAsUpEnabled(true);

1
这是我在 Material Design 之前实现的方式,现在我已经切换到新的 Toolbar,它似乎仍然有效。在我的情况下,如果用户在未登录的情况下尝试打开侧边栏,我希望将其登录(并捕获事件以防止侧边栏打开)。在您的情况下,您不能 return true;
@Override
public boolean onOptionsItemSelected(MenuItem item) {
    if (!isLoggedIn() && item.getItemId() == android.R.id.home) {
        login();
        return true;
    }
    return mDrawerToggle.onOptionsItemSelected(item) || super.onOptionsItemSelected(item);
}

啊,我忘了,在一个片段中无法捕获主页按钮的点击事件,我在这里提出了一个问题,并建议一种解决方法,即手动将事件传递到所有片段。https://dev59.com/g3zaa4cB1Zd3GeqPUchz - darnmason

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