Question

我无法完成它。我的应用程序从标准字体开始，自定义活动布局膨胀，然后我的字体更改。据我所知，我不能直接将自定义字体编码到我打算膨胀到操作栏的布局的xml文件中，所以我从网上的另一个主题获得了一个代码，通过引用TextView来进行更改。操作栏并在课堂上设置它。有没有办法制作字体＆＃34;标准＆＃34;，以便应用程序已经启动显示我的自定义字体？

以下是主要活动的相关代码，我试图更改：

    public class Amd extends Activity {

    DatabaseHandler dh = new DatabaseHandler(this);
    public ProgressDialog mProgressDialog;
    public JSONObject jsonOb;
    public Filme m;
    public ArrayList<Genero> g;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.amd);
        setActionBar();
    }

    @SuppressLint("InflateParams") private void setActionBar(){
        this.getActionBar().setDisplayShowCustomEnabled(true);

        LayoutInflater inflator = LayoutInflater.from(this);
        View v = inflator.inflate(R.layout.custom_action_bar, null);

        Typeface font = Typeface.createFromAsset(this.getAssets(), "tcb.ttf");
        TextView textoActionBar = (TextView) getWindow().findViewById(Resources.getSystem().getIdentifier("action_bar_title", "id", "android"));
        textoActionBar.setTypeface(font);
        textoActionBar.setText("TESTE");
        this.getActionBar().setCustomView(v);
    }

这是样式xml，我也用它来设置主题并为操作栏着色：

    <resources xmlns:android="http://schemas.android.com/apk/res/android">

    <!--
        Base application theme for API 14+. This theme completely replaces
        AppBaseTheme from BOTH res/values/styles.xml and
        res/values-v11/styles.xml on API 14+ devices.
    -->
    <style name="AppBaseTheme" parent="android:Theme.Holo.Light.DarkActionBar">
        <!-- API 14 theme customizations can go here. -->
        <item name="android:actionBarStyle">@style/PurpleActionBar</item>
    </style>

    <style name="PurpleActionBar" parent="@android:style/Widget.Holo.Light.ActionBar">
        <item name="android:background">#5D4480</item>
        <item name="android:titleTextStyle">@style/ActionText</item>
    </style>

    <style name="ActionText" parent="@android:style/TextAppearance">
        <item name="android:textColor">#975CE6</item>
    </style>

</resources>

这是清单：

    <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.virosys.amd"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="16"
        android:targetSdkVersion="16" />

    <uses-permission android:name="android.permission.INTERNET" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppBaseTheme" >
        <activity
            android:name="com.virosys.amd.activities.Amd"
            android:label="AMD"
            android:screenOrientation="portrait" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

以下是我主要活动的布局：

    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="@color/Purple"
    tools:context="com.virosys.amd.activities.Amd" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:orientation="horizontal" >

        <ImageButton
            android:id="@+id/imageButton1"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:layout_marginLeft="4dp"
            android:layout_marginTop="4dp"
            android:layout_marginRight="2dp"
            android:layout_marginBottom="2dp"
            android:onClick="listasOuFilmes"
            android:scaleType="fitXY"
            android:background="@null"
            android:src="@drawable/filmes" />

        <ImageButton
            android:id="@+id/imageButton2"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:layout_marginRight="4dp"
            android:layout_marginTop="4dp"
            android:layout_marginLeft="2dp"
            android:layout_marginBottom="2dp"
            android:onClick="buscarFilme"
            android:scaleType="fitXY"
            android:background="@null"
            android:src="@drawable/busca" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:orientation="horizontal" >

        <ImageButton
            android:id="@+id/ImageButton3"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:layout_marginLeft="4dp"
            android:layout_marginBottom="4dp"
            android:layout_marginRight="2dp"
            android:layout_marginTop="2dp"
            android:onClick="inserirFilme"
            android:scaleType="fitXY"
            android:background="@null"
            android:src="@drawable/noimage" />

        <ImageButton
            android:id="@+id/ImageButton4"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:layout_marginRight="4dp"
            android:layout_marginBottom="4dp"
            android:layout_marginLeft="2dp"
            android:layout_marginTop="2dp"
            android:scaleType="fitXY"
            android:background="@null"
            android:src="@drawable/config" />
    </LinearLayout>

</LinearLayout>

我还需要指定什么，或者您是否需要其他任何代码来了解我尝试做什么？

Answer 1

由于Android ActionBar setTitle方法收到CharSequence作为参数，您只需将setActionBar()方法的调用替换为下一行，即使用span：

Typeface font = Typeface.createFromAsset(this.getAssets(), "tcb.ttf");
String actionBarTitle = "TESTE";
SpannableStringBuilder ssb = new SpannableStringBuilder(actionBarTitle);
ssb.setSpan(new CustomTypefaceSpan("", font), 0, actionBarTitle.length(), Spanned.SPAN_EXCLUSIVE_INCLUSIVE);
getActionBar().setTitle(ssb);

并且不要忘记将此自定义字体span类添加到项目中。

public class CustomTypefaceSpan extends TypefaceSpan {

    private final Typeface newType;

    public CustomTypefaceSpan(String family, Typeface type) {
        super(family);
        newType = type;
    }

    @Override
    public void updateDrawState(TextPaint ds) {
        applyCustomTypeFace(ds, newType);
    }

    @Override
    public void updateMeasureState(TextPaint paint) {
        applyCustomTypeFace(paint, newType);
    }

    private static void applyCustomTypeFace(Paint paint, Typeface tf) {
        int oldStyle;
        Typeface old = paint.getTypeface();
        if (old == null) {
            oldStyle = 0;
        } else {
            oldStyle = old.getStyle();
        }

        int fake = oldStyle & ~tf.getStyle();
        if ((fake & Typeface.BOLD) != 0) {
            paint.setFakeBoldText(true);
        }

        if ((fake & Typeface.ITALIC) != 0) {
            paint.setTextSkewX(-0.25f);
        }

        paint.setTypeface(tf);
    }
}

Answer 2

您要做的是创建一个扩展TextView的自定义类，然后在构造函数中设置您的默认字体。然后在xml中引用自定义textview而不是Androids TextView。

如何为操作栏文本设置自定义字体，并在启动时实现？

2 个答案: