android title won't show in toolbar

问题

I have an xml that I use with so many activities with fragments file but my problem is that I can't display the text I want in the toolbar, I use that xml that way because I have a navigation drawer and I needed to handle somethings so I had to do it that way.

my xml:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/frame_container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".StatusActivity"
    android:orientation="vertical" >

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        style="@style/ToolBarStyle"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="?attr/colorPrimary"
        android:minHeight="@dimen/abc_action_bar_default_height_material" />

</RelativeLayout>

One of my activities:

public class GroupChatActivity extends ActionBarActivity {

    @Override
    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_base_layout);

        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
         setSupportActionBar(toolbar);
         getSupportActionBar().setDisplayShowHomeEnabled(true);

         ActionBar actionBar = getSupportActionBar();
         actionBar.setTitle("Groups history");

        Aniways.init(this);

        if(savedInstanceState == null)
        {
            FragmentManager manager = getSupportFragmentManager();

            Fragment fragment = GroupChatFragment.newInstance(getIntent().getIntExtra("uid", 0));
            manager.beginTransaction().add(R.id.frame_container, fragment).commit();
        }
    }
}

as you can see I try to set title to the action bar but it doesn't work.

回答1:

getSupportActionBar().setDisplayShowTitleEnabled(true);

回答2:

Setting,

app:title="@string/my_title"

within the declaration of the the android.support.v7.widget.Toolbar, hard codes the title in the toolbar.

To set the title programatically,

Toolbar toolbar = (Toolbar) findViewById(R.id.my_toolbar);
toolbar.setTitle("my title");
setSupportActionBar(toolbar);

in your activity class.

回答3:

Try this .. this method works for me..!! hope it may help somebody..!!

<android.support.v7.widget.Toolbar  
 xmlns:app="http://schemas.android.com/apk/res-auto"  
 android:id="@+id/my_awesome_toolbar"  
 android:layout_width="match_parent"  
 android:layout_height="wrap_content"  
 android:background="?attr/colorPrimary"  
 android:minHeight="?attr/actionBarSize"  
 app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar" >  

<TextView  
   android:id="@+id/toolbar_title"  
   android:layout_width="wrap_content"  
   android:layout_height="wrap_content"  
   android:layout_gravity="center"  
   android:singleLine="true"  
   android:text="Toolbar Title"  
   android:textColor="@android:color/white"  
   android:textSize="18sp"  
   android:textStyle="bold" />  

</android.support.v7.widget.Toolbar>  

EDIT

You can also use this.

setSupportActionBar(toolbar);
if (getSupportActionBar() != null)
      getSupportActionBar().setTitle("Toolbar title");

回答4:

Try toolbar.setTitle('Groups history');

回答5:

getActionBar().setTitle("Groups History");

or if you are using AppCompat libraries;

getSupportActionBar().setTitle("Groups History");

回答6:

I did a custom action bar.

Layout iguepardos_action_bar.xml with this code

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:local="http://schemas.android.com/apk/res-auto"
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/blanco"
android:minHeight="?attr/actionBarSize">

    <TextView
    android:id="@+id/toolbar_title"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="left"
    android:singleLine="true"
    android:text="Toolbar Title"
    android:textColor="@color/naranja"
    android:textSize="18sp" />

</android.support.v7.widget.Toolbar>

In my Class extended AppCompatActivity I had this:

protected void onCreate(Bundle savedInstanceState) {
.... 
....

getSupportActionBar().setDisplayShowCustomEnabled(true); // is for specify use custom bar 
getSupportActionBar().setCustomView(R.layout.iguepardos_action_bar);  // my custom layout
getSupportActionBar().setDisplayHomeAsUpEnabled(true); // Button for come back

View mCustomView = getSupportActionBar().getCustomView(); // Set the view
TextView TitleToolBar = (TextView) mCustomView.findViewById(R.id.toolbar_title); // find title control
TitleToolBar.setText("The Title Show"); // Set the Title

}

回答7:

I actually had to get the toolbar_title to set the text into each different activity:

    toolbar = findViewById(R.id.toolbar);
    toolbarTitle = findViewById(R.id.toolbar_title);   //<----- here
    toolbarTitle.setText(getString(R.string.my_activity_toolbar_title));
    setSupportActionBar(toolbar);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);

回答8:

I spent about a day looking for the cause of the issue. Neither supportActionBar?.title = "SomeTitle" nor supportActionBar?.setDisplayShowTitleEnabled(true) did not work, nor hacks with custom toolbars from answers here looked good.

My activity is using CollapsingToolbarLayout but not displaying any title, nor label from manifest, nor dynamically set one. But the sample ScrollingActivity (New - Activity - ...) displayed the title.

Finally I set up a sample project, copied MyActivity and ScrollingActivity and looked through the diff.

layout_height both of the AppBarLayout and CollapsingToolbarLayout must be set to match_parent or fixed size. Thats all. See working code below.

<com.google.android.material.appbar.AppBarLayout
            android:id="@+id/app_bar"
            android:layout_width="match_parent"
            android:layout_height="180dp"
            android:fitsSystemWindows="true"
            android:theme="@style/AppTheme.AppBarOverlay"
            >

        <com.google.android.material.appbar.CollapsingToolbarLayout
                android:id="@+id/toolbar_layout"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:fitsSystemWindows="true"
                app:layout_scrollFlags="scroll|exitUntilCollapsed"
                app:toolbarId="@id/toolbar"
                app:contentScrim="?attr/colorPrimary"
                >

            <androidx.appcompat.widget.Toolbar
                    android:id="@+id/toolbar"
                    android:layout_width="match_parent"
                    android:layout_height="?attr/actionBarSize"
                    android:background="?attr/colorPrimary"
                    app:popupTheme="@style/AppTheme.PopupOverlay"
                    app:layout_collapseMode="pin"
                    />

        </com.google.android.material.appbar.CollapsingToolbarLayout>
    </com.google.android.material.appbar.AppBarLayout>

来源：https://stackoverflow.com/questions/27643248/android-title-wont-show-in-toolbar