如何更改android中操作栏中标题的字体

Question

我想在操作栏中更改标题的字体。我以编程方式设置了标题，在 xml 中它没有显示任何效果。现在我想更改该标题的字体。我看到了一些与此相关的帖子，但它没有遇到我面临的问题。

这是我的代码。

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

    //SETTING ITS LAYOUT
    setContentView(R.layout.activity_start);
Typeface typeface = getResources().getFont(R.font.dancingscriptregular);


    //SETTING TITLE OF THE APP IN BLUE COULOR
    getSupportActionBar().setTitle(Html.fromHtml("<font color='#1F9FD9'>Expense Manager <font>"));

  ...

 }

现在下一步是什么？，如何使用字体来设置我的标题的字体。

请帮忙！

在 androidMenifest.xml 中

<activity
        android:parentActivityName=".StartActivity"
        android:name=".ExpenseActivity"
        android:fitsSystemWindows="true"
        android:label="@string/expenseActivity" <!--This Line is not working-->
        android:screenOrientation="portrait"
        android:textColor="@color/batteryChargedBlue"
        android:theme="@style/ExpenseTheme" />
    <activity

费用主题

<style name="ExpenseTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/white</item>
    <item name="colorPrimaryDark">@color/batteryChargedBlue</item>
    <item name="colorAccent">@color/greenBlue</item>
    <item name="android:navigationBarColor">@color/batteryChargedBlue</item>

</style>

activity_start.xml 代码

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".StartActivity">

<LinearLayout
    android:id="@+id/part_1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:layout_above="@+id/part_2"
    android:gravity="center"
    >

    <TextView
        android:id="@+id/welcome"
        android:gravity="center"
        android:layout_marginBottom="20dp"
        android:textColor="@color/greenBlue"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:fontFamily="@font/caviar_dreams_bold"
        android:text="Welcome !!!"
        android:textSize="55dp"


        />

    <TextView
        android:id="@+id/info"
        android:gravity="center"
        android:layout_marginTop="10dp"
        android:textColor="@color/greenBlue"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:fontFamily="@font/dancingscriptregular"
        android:text="@string/info"
        android:textSize="35dp"
        />

    <EditText
        android:id="@+id/imaEt"
        android:layout_marginTop="60dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:hint="@string/enterIMA"
        android:background="@drawable/border_and_lines_tp"
        android:padding="15dp"
        android:textColorHint="@color/greenBlue"
        android:fontFamily="@font/caviar_dreams_bold"
        android:layout_gravity="center"
        android:inputType="numberDecimal"
        />

    <com.google.android.material.button.MaterialButton
        android:id="@+id/imaBtn"
        android:layout_width="110dp"
        android:layout_height="55dp"
        android:background="@color/batteryChargedBlue"
        android:theme="@style/ButtonTheme"
        android:text="Enter"
        android:textSize="15sp"
        android:gravity="center"
        android:layout_marginTop="15dp"
        android:onClick="setInitialMonthlyAmount"
        app:cornerRadius="5dp"
        android:textColor="@color/white"/>

    <com.google.android.material.button.MaterialButton
        android:id="@+id/imaSkip"
        android:layout_width="75dp"
        android:layout_height="50dp"
        android:background="@color/batteryChargedBlue"
        android:theme="@style/AppTheme"
        android:text="Skip"
        android:textSize="15sp"
        android:gravity="center"
        android:layout_marginTop="15dp"
        android:onClick="setOnSkipClicked"
        app:cornerRadius="5dp"
        android:textColor="@color/white"/>

    <!-- <Button
         android:id="@+id/imaBtn"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_gravity="center"
         android:layout_marginTop="15dp"
         android:background="@drawable/borders_and_lines"
         android:onClick="setInitialMonthlyAmount"
         android:text="Enter"
         android:textColor="#FFF" /> -->

    <!-- <Button
         android:id="@+id/imaSkip"
         android:layout_gravity="center"
         android:layout_marginTop="15dp"
         android:text="Continue >>"
         android:textColor="#FFF"
         android:onClick="setOnSkipClicked"
         android:background="@drawable/borders_and_lines"
         android:layout_width="100dp"
         android:layout_height="30dp"
         /> -->



</LinearLayout>

<LinearLayout
    android:id="@+id/part_2"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true">

    <TextView
        android:id="@+id/help"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/help"
        android:textColor="@color/greenBlue"
        android:fontFamily="@font/dancingscriptregular"
        android:textStyle="bold"
        android:layout_marginBottom="10dp"
        android:layout_marginRight="10dp"
        android:gravity="right"
        android:textSize="20dp"
        android:clickable="true"/>

</LinearLayout>
</RelativeLayout>

这是我的实际布局，我是通过使用我发布的以下文件实现的。现在我只想更改黑色圆圈文本的字体。

Answer 1

你有不同的选择。
在您的活动中，您可以在布局中使用类似的内容：

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

        <com.google.android.material.appbar.MaterialToolbar
            style="@style/MyToolbar"
            ...
            />

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

然后你可以定义一个自定义样式：

  <!-- Toolbar -->
  <style name="MyToolbar" parent="Widget.MaterialComponents.Toolbar">
    <item name="titleTextAppearance">@style/My_TextAppearance_Toolbar</item>    
  </style>

  <style name="My_TextAppearance_Toolbar" parent="@style/TextAppearance.MaterialComponents.Headline6">
    <item name="fontFamily">....</item>
    <item name="android:fontFamily">....</item>
    <item name="android:textStyle">bold|italic</item>
  </style>

否则，你也可以使用该ToolbarAPI：

   toolbar.setTitle("Material Title");
   toolbar.setTitleTextAppearance(this,R.style.My_TextAppearance_Toolbar);

另一种选择是app:titleTextAppearance在布局中使用属性：

  <com.google.android.material.appbar.MaterialToolbar
            android:id="@+id/toolbar"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:titleTextAppearance="@style/My_TextAppearance_Toolbar"
            .../>

Answer 2

只需使用这些代码：

如果您使用“Holo 主题”，请使用：

    int titleId = getResources().getIdentifier("action_bar_title", "id",
            "android");
    TextView yourTextView = (TextView) findViewById(titleId);
    yourTextView.setTextColor(getResources().getColor(R.color.black));
   Typeface yourTypeface = Typeface.createFromAsset(getAssets(), "fonts/your_font.ttf");
   //or get from resource
   yourTextView.setTypeface(yourTypeface);

如果您使用“Material Theme”，请使用：

Toolbar toolbar = (Toolbar) findViewById(R.id.action_bar);
TextView textView1 = (TextView) toolbar.getChildAt(0);//title
TextView textView2 = (TextView) toolbar.getChildAt(1);//subtitle
textView1.setTextColor(getResources().getColor(R.color.colorPrimaryDark));
textView2.setTextColor(getResources().getColor(R.color.colorAccent));
   Typeface yourTypeface1 = Typeface.createFromAsset(getAssets(), "fonts/your_font1.ttf");
   Typeface yourTypeface2 = Typeface.createFromAsset(getAssets(), "fonts/your_font2.ttf");
   //or get from resource
   textView1.setTypeface(yourTypeface1);
   textView2.setTypeface(yourTypeface2);

它有效而且非常简单！