Question

无法更改工具栏标题我在manifeast.xml＆amp;中设置了标题还使用了setTitle("TITLE");

我将标题设为历史＆amp;报告，但它显示不同的标题通知，这是另一个活动标题。

我查了manifeast.xml但没有变化，有人可以帮我解决这个问题。

这是我的代码

public class Nav_HistoryAndReports extends AppCompatActivity {

private Toolbar toolbar;
private TabLayout tabLayout;
private ViewPager viewPager;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setTitle("History & Reports");
    setContentView(R.layout.nav_history_and_reports);

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

    viewPager = (ViewPager) findViewById(R.id.viewpager);
    setupViewPager(viewPager);

    tabLayout = (TabLayout) findViewById(R.id.tabs);
    tabLayout.setupWithViewPager(viewPager);
}

public void setToolbar(Toolbar toolbar) {
    setSupportActionBar(toolbar);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}

private void setupViewPager(ViewPager viewPager) {
    ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
    adapter.addFragment(new FragmentHistoryAndReports_Visits(), "VISITS");
    adapter.addFragment(new FragmentHistoryAndReports_Visitors(), "VISITORS");
    adapter.addFragment(new FragmentHistoryAndReports_Map(), "MAP");
    viewPager.setAdapter(adapter);
}

class ViewPagerAdapter extends FragmentPagerAdapter {
    private final List<Fragment> mFragmentList = new ArrayList<>();
    private final List<String> mFragmentTitleList = new ArrayList<>();

    public ViewPagerAdapter(FragmentManager manager) {
        super(manager);
    }

    @Override
    public Fragment getItem(int position) {
        return mFragmentList.get(position);
    }

    @Override
    public int getCount() {
        return mFragmentList.size();
    }

    public void addFragment(Fragment fragment, String title) {
        mFragmentList.add(fragment);
        mFragmentTitleList.add(title);
    }

    @Override
    public CharSequence getPageTitle(int position) {
        return mFragmentTitleList.get(position);
    }
}

toolbar.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_margin="1dp"
    android:background="@color/white"
    android:fitsSystemWindows="true"
    android:minHeight="?attr/actionBarSize"
    android:titleTextColor="@color/colorPrimary"
    app:layout_scrollFlags="scroll|enterAlways"
    app:navigationIcon="?attr/homeAsUpIndicator"
    app:theme="@style/GalaxyZooThemeToolbarDarkOverflow">

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

Answer 1

工具栏标题可以通过两种方式设置

1.在布局XML

<android.support.design.widget.AppBarLayout

android:id="@+id/appBarLayout"
android:layout_width="match_parent"
android:layout_height="56dp"
android:elevation="4dp"
android:theme="@style/AppTheme.AppBarOverlay"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        app:title="Main Activity"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:background="?attr/colorPrimary"
        app:navigationIcon="@drawable/ic_arrow_back_white_24dp"

        app:popupTheme="@style/AppTheme.PopupOverlay" />

</android.support.design.widget.AppBarLayout>

<强> 2。在Java中它将在AppCompatActivity中运行

Toolbar toolbar = findViewById(R.id.toolbar);
toolbar.setTitle("Notice Board"); 
setSupportActionBar(toolbar);

Answer 2

我使用下面的行来更改工具栏标题

getSupportActionBar().setTitle("YOUR_TITLE");

Answer 3

在此行toolbar = findViewById(R.id.toolbar);之后添加toolbar.setTitle("History & Reports");

并删除setTitle("History & Reports");

Answer 4

在布局中设置标题，如下所示

    <?xml version="1.0" encoding="utf-8"?>
    <android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="1dp"
        android:background="@color/white"
        android:fitsSystemWindows="true"
        android:minHeight="?attr/actionBarSize"
        android:titleTextColor="@color/colorPrimary"
        app:layout_scrollFlags="scroll|enterAlways"
        app:navigationIcon="?attr/homeAsUpIndicator"
        app:theme="@style/GalaxyZooThemeToolbarDarkOverflow">

        <TextView
            android:id="@+id/textViewTitle"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/app_name"
            android:layout_marginLeft="5dp"
            android:textAppearance="@android:style/TextAppearance.DeviceDefault.Large"/>

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

并在您的活动中只需设置工具栏并禁用其默认标题，如下所示

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

    ActionBar actionBar = getSupportActionBar();
    if(actionBar != null)
        actionBar.setDisplayShowTitleEnabled(false);

Answer 5

我找到了解决方案

    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    if (getSupportActionBar() != null)
        getSupportActionBar().setTitle(getString(R.string.calender));

这个对我有用

Answer 6

如果您使用支持@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_favorite); Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(toolbar); try { getSupportActionBar().setDisplayHomeAsUpEnabled(true); getSupportActionBar().setDisplayShowHomeEnabled(true); } catch (NullPointerException e) { Log.d(TAG, "onCreate: back button not supported!"); } // here you set your activity title getSupportActionBar().setTitle("Your Activity Title");的工具栏，则应执行以下代码：

 .mat-menu-item{
   max-height: 50px;
 }

Answer 7

尝试添加getsupportActionBar（）。setTitle（）;

Answer 8

Litle改变你的代码看起来像这样..

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

在setToolbar之后看

 public void setToolbar(Toolbar toolbar) {
    toolbar.setTitle("History & Reports");
    setSupportActionBar(toolbar);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}

Answer 9

正如 Mike M 所说

我刚刚在调用你的setToolbar（）方法结束时或之后添加了getSupportActionBar().setTitle("History & Reports");。

Android工具栏标题

9 个答案: