字体在Android Studio预览中更改,但在模拟器设备中未更改

概述我正在尝试更改textviews,复选框,按钮和android.support.design.widget.TextInputLayout的默认字体.为了清楚说明,我设置了“android：fontFamily”>cursive<.如下所示,它似乎在AndroidStudio预览中正确显示,但在模拟器中却不正确.另请注意,密码(提示)似乎在这两种方式中均不起

我正在尝试更改textvIEws,复选框,按钮和android.support.design.Widget.TextinputLayout的默认字体.为了清楚说明,我设置了“ androID：FontFamily”> cursive<.如下所示,它似乎在Android Studio预览中正确显示,但在模拟器中却不正确.另请注意,密码(提示)似乎在这两种方式中均不起作用.非常感谢您的帮助,以强调为什么会这样.

styles.xml：

<!-- Base application theme. --><style name="Apptheme" parent="theme.AppCompat.light.DarkActionbar">    <!-- Customize your theme here. -->    <item name="colorPrimary">@color/colorPrimary</item>    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>    <item name="colorAccent">@color/colorAccent</item>    <item name="androID:textcolor">#ed328b</item>    <item name="androID:TitleTextcolor">#ed328b</item>    <item name="androID:textSize">14sp</item>    <item name="androID:FontFamily">cursive</item></style><style name="TextLabel" parent="Widget.Design.TextinputLayout">    <!-- Hint color and label color in FALSE state -->    <item name="androID:textcolorHint">#ed328b</item>    <item name="androID:textSize">14sp</item>    <!-- Label color in TRUE state and bar color FALSE and TRUE State -->    <item name="colorAccent">#ed328b</item>    <item name="androID:textcolor">#ed328b</item>    <item name="colorControlnormal">#ed328b</item>    <item name="colorControlActivated">#ed328b</item>    <item name="androID:textcolorSecondary">#ed328b</item>    <item name="androID:textcolorPrimary">#ed328b</item>    <item name="androID:FontFamily">cursive</item></style>

activity_main.xml：

<androID.support.design.Widget.TextinputLayout            androID:layout_wIDth="match_parent"            androID:layout_height="wrap_content"            androID:theme="@style/TextLabel"            androID:layout_margintop="@dimen/space_2">            <EditText                androID:layout_wIDth="match_parent"                androID:layout_height="wrap_content"                androID:layout_marginBottom="10dp"                androID:inputType="textEmailAddress"                androID:hint="@string/signin_emailaddress"                androID:ID="@+ID/txtEmail" />        </androID.support.design.Widget.TextinputLayout>        <androID.support.design.Widget.TextinputLayout            androID:layout_wIDth="match_parent"            androID:layout_height="wrap_content"            androID:theme="@style/TextLabel"            androID:layout_margintop="@dimen/space_2">            <EditText                androID:layout_wIDth="match_parent"                androID:layout_height="wrap_content"                androID:layout_marginBottom="10dp"                androID:inputType="textPassword"                androID:hint="@string/signin_password"                androID:ID="@+ID/txtPassword" />        </androID.support.design.Widget.TextinputLayout>        <CheckBox            androID:ID="@+ID/rememberBox"            androID:layout_wIDth="wrap_content"            androID:layout_height="wrap_content"            androID:layout_margintop="5dp"            androID:layout_gravity="start"            androID:text="remember my email and password"            androID:textAlignment="center"            androID:textcolor="#ed328b"            androID:textSize="11dp" />

解决方法:

AndroID不支持通过XML将自定义字体直接应用于文本小部件的内置支持.

您可以参考本文档以设置xml中的字体：https://developer.android.com/guide/topics/ui/look-and-feel/fonts-in-xml.html

或者您需要在Java代码中设置字体以@R_669_6502@.

或者,您可以执行以下 *** 作：

第一

您需要定义自己的样式.在您的/ res / values文件夹中,打开/创建attrs.xml文件,并添加一个可声明样式的对象,如下所示：

<?xml version="1.0" enCoding="utf-8"?><resources>    <declare-styleable name="FontText">        <attr name="typefaceAsset" format="string"/>    </declare-styleable></resources>

第二

假设您想经常使用此小部件,则应该为加载的Typeface对象设置一个简单的缓存,因为从内存中动态加载它们会花费一些时间.就像是：

public class FontManager {    private static FontManager instance;    private AssetManager mgr;    private Map<String, Typeface> Fonts;    private FontManager(AssetManager _mgr) {        mgr = _mgr;        Fonts = new HashMap<String, Typeface>();    }    public static voID init(AssetManager mgr) {        instance = new FontManager(mgr);    }    public static FontManager getInstance() {        if (instance == null) {            // App.getContext() is just one way to get a Context here            // getContext() is just a method in an Application subclass            // that returns the application context            AssetManager assetManager = App.getContext().getAssets();            init(assetManager);        }        return instance;    }    public Typeface getFont(String asset) {        if (Fonts.containsKey(asset))            return Fonts.get(asset);        Typeface Font = null;        try {            Font = Typeface.createFromAsset(mgr, asset);            Fonts.put(asset, Font);        } catch (Exception e) {        }        if (Font == null) {            try {                String fixedAsset = fixAssetfilename(asset);                Font = Typeface.createFromAsset(mgr, fixedAsset);                Fonts.put(asset, Font);                Fonts.put(fixedAsset, Font);            } catch (Exception e) {            }        }        return Font;    }    private String fixAssetfilename(String asset) {        // Empty Font filename?        // Just return it. We can't help.        if (TextUtils.isEmpty(asset))            return asset;        // Make sure that the Font ends in '.ttf' or '.ttc'        if ((!asset.endsWith(".ttf")) && (!asset.endsWith(".ttc")))            asset = String.format("%s.ttf", asset);        return asset;    }}

这将允许您使用.ttc文件扩展名,但尚未经过测试.

第三

创建一个新类来继承TextVIEw.此特定示例考虑了已定义的XML字体(粗体,斜体等),并将其应用于字体(假设您使用的是.ttc文件).

/** * TextVIEw subclass which allows the user to define a truetype Font file to use as the vIEw's typeface. */public class FontText extends TextVIEw {    public FontText(Context context) {        this(context, null);    }    public FontText(Context context, AttributeSet attrs) {        this(context, attrs, 0);    }    public FontText(Context context, AttributeSet attrs, int defStyle) {        super(context, attrs, defStyle);        if (isInEditMode())            return;        TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.FontText);        if (ta != null) {            String FontAsset = ta.getString(R.styleable.FontText_typefaceAsset);            if (!TextUtils.isEmpty(FontAsset)) {                Typeface tf = FontManager.getInstance().getFont(FontAsset);                int style = Typeface.norMAL;                float size = getTextSize();                if (getTypeface() != null)                    style = getTypeface().getStyle();                if (tf != null)                    setTypeface(tf, style);                else                    Log.d("FontText", String.format("Could not create a Font from asset: %s", FontAsset));            }        }    }}

最后终于

用完全限定的类名替换XML中的TextVIEw实例.就像使用AndroID名称空间一样声明您的自定义名称空间.请注意,“ typefaceAsset”应指向/ assets目录中包含的.ttf或.ttc文件.

<relativeLayout xmlns:androID="http://schemas.androID.com/apk/res/androID"    xmlns:custom="http://schemas.androID.com/apk/res-auto"    androID:layout_wIDth="match_parent"    androID:layout_height="match_parent">    <com.example.FontText        androID:layout_wIDth="wrap_content"        androID:layout_height="wrap_content"        androID:text="This is a custom Font text"        custom:typefaceAsset="Fonts/AvenirNext-Regular.ttf"/></relativeLayout>

总结

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