单击导航抽屉图标时如何打开导航抽屉

Question

单击导航抽屉图标时如何打开导航抽屉。

我想像这样打开导航抽屉

![导航抽屉][1]

我添加了一个菜单但仍然没有显示

toggle = new ActionBarDrawerToggle(
            DashBordActivity.this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
    drawer.setDrawerListener(toggle);
    toggle.syncState();
    if (navigationView != null) {
        setupDrawerContent(navigationView);
    }


@Override
public void onBackPressed() {
    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawerLayout);
    if (drawer.isDrawerOpen(GravityCompat.START)) {
        drawer.closeDrawer(GravityCompat.START);
    } else {
        super.onBackPressed();
    }
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    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();

    //noinspection SimplifiableIfStatement

    return super.onOptionsItemSelected(item);
}

@SuppressWarnings("StatementWithEmptyBody")
//@Override
public boolean onNavigationItemSelected(MenuItem item) {
    // Handle navigation view item clicks here.
    int id = item.getItemId();

    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawerLayout);
    drawer.closeDrawer(GravityCompat.START);
    return true;
}

public void setupToolbar(String title) {
    setSupportActionBar(toolbar);
    getSupportActionBar().setTitle(title);
    toolbar.setTitleTextColor(Color.BLACK);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}

private void setupDrawerContent(NavigationView navigationView) {
    //revision: this don't works, use setOnChildClickListener() and setOnGroupClickListener() above instead
    navigationView.setNavigationItemSelectedListener(
            new NavigationView.OnNavigationItemSelectedListener() {
                @Override
                public boolean onNavigationItemSelected(MenuItem menuItem) {
                    menuItem.setChecked(true);
                    drawer.closeDrawers();
                    return true;
                }
            });
}

当我点击抽屉时导航抽屉没有打开如何解决这个问题

我的代码中是否缺少任何代码。

Answer 1

  Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
       toolbar.setNavigationIcon(R.drawable.menu);
        toolbar.setNavigationOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                drawer.openDrawer(START);
            }
        });

Answer 2

尝试这个，

<item
        android:id="@+id/nav_camera"
        android:icon="@drawable/ic_menu_camera"
        android:title="@string/import" />

</group>

Answer 3

尝试这个：

本教程非常有帮助，例如：-

• 添加导航抽屉布局
• 在抽屉布局中设置图标和文本

我参考这个链接

https://www.androidhive.info/2013/11/android-sliding-menu-using-navigation-drawer/

试试这个很有帮助