title: Set a title in Toolbar from fragment in Android
body: <p>I have been using the latest Toolbar from AppCompatv7 lib.I have placed a textview in the ToolBar ViewGroup And I want to set a title into this Textview from the fragment in my activity.In case of a custom action bar ((ActionBarActivity)getActivity).setcustomView(..) would have done the job.But due to use of this ToolBar I am not able to use that.Also I have implemented a method in my BaseActivity that is inherited by all Activities.This BaseActivity contains my method to initialize a sliding drawer to the left.I have to initialize the initDrawerLayout() method in activity else the drawer would not be initialized.And if I initialize it in fragment its giving me all empty results,neither the toggle button for drawer and nor is the custom title getting set.</p>
  
  <p>This is my initDrawer code..</p>
  
  <pre><code>public void initDrawerLayout(String toolbar_text) {
          mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
          mDrawerRelative = (RelativeLayout) findViewById(R.id.drawer_relative);
          if (mDrawerLayout != null) {
              findViewById(R.id.drawer_btn_a).setOnClickListener(this);
              findViewById(R.id.drawer_btn_b).setOnClickListener(this);
              findViewById(R.id.drawer_btn_c).setOnClickListener(this);
              findViewById(R.id.drawer_btn_d).setOnClickListener(this);
              findViewById(R.id.drawer_btn_e).setOnClickListener(this);
              findViewById(R.id.drawer_btn_f).setOnClickListener(this);
              findViewById(R.id.drawer_btn_g).setOnClickListener(this);
              findViewById(R.id.drawer_btn_h).setOnClickListener(this);
              findViewById(R.id.drawer_btn_i).setOnClickListener(this);
              findViewById(R.id.drawer_btn_j).setOnClickListener(this);
              findViewById(R.id.drawer_btn_k).setOnClickListener(this);
              findViewById(R.id.drawer_btn_l).setOnClickListener(this);
              findViewById(R.id.my_layout).setOnClickListener(this);
  
  
  
  
  
              Toolbar toolbar = (Toolbar) findViewById(R.id.my_awesome_toolbar);
              toolbar.setBackground(getResources().getDrawable(R.drawable.icn_actionbar_background));
              TextView mTitle = (TextView) toolbar.findViewById(R.id.toolbar_title);
              mTitle.setText(toolbar_text);
              mTitle.setTypeface(Typeface.DEFAULT_BOLD);
              if (toolbar != null) {
                  setSupportActionBar(toolbar);
                   getSupportActionBar().setDisplayHomeAsUpEnabled(true);
              }
              toolbar.setNavigationIcon(R.drawable.ic_drawer);
  
               mDrawerToggle = new ActionBarDrawerToggle(
                      this,  mDrawerLayout, toolbar,
                      R.string.drawer_open, R.string.drawer_close
                  );
                  mDrawerLayout.setDrawerListener(mDrawerToggle);
  
  
              toolbar.setNavigationOnClickListener(new OnClickListener() {
  
                  @Override
                  public void onClick(View v) {
                      if (mDrawerLayout.isDrawerOpen(Gravity.LEFT)) {
                          mDrawerLayout.closeDrawer(Gravity.LEFT);
                      } else {
                          mDrawerLayout.openDrawer(Gravity.LEFT);
                      }
                  }
              });
              mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow,
                      GravityCompat.START);
  
              mDrawerLayout.setScrimColor(getResources().getColor(
                      android.R.color.transparent));
              getSupportActionBar().setDisplayHomeAsUpEnabled(true);
              getSupportActionBar().setHomeButtonEnabled(true);
              getSupportActionBar().setDisplayShowTitleEnabled(false);
  
          }
      }
  </code></pre>
  
  <p>And this my code in the fragment..</p>
  
  <p><code>((FirstActivity) getActivity()).initDrawerLayout(mFirst.name);</code>
      where mFirst is a object of class Person</p>
  
  <p>and the toolbar code..</p>
  
  <pre><code>&lt;android.support.v7.widget.Toolbar
              android:id="@+id/my_awesome_toolbar"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:minHeight="?attr/actionBarSize"&gt;
             &lt;TextView
                  android:id="@+id/toolbar_title"
                  android:layout_width="wrap_content"
                  android:layout_height="wrap_content"
                  android:layout_gravity="center"
                  android:gravity="center"
                  android:text="Toolbar Title"
                  android:textColor="@color/action_text-color"
                  android:textSize="18sp"
                  android:textStyle="bold" /&gt; 
  
              &lt;/android.support.v7.widget.Toolbar&gt;
  </code></pre>
  
  <p>Please help guys..</p>