android - 自定义字体 EditText 焦点

Question

我在前 Lollipop 设备的样式中使用 Lollipop 的新功能，例如 coloraccent、colorPrimary。

styles.xml

<resources>

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <item name="colorPrimary">@color/material_teal500</item>
    <item name="colorPrimaryDark">@color/material_teal600</item>
    <item name="colorAccent">@color/material_white</item>
</style>

现在我想为我的 TextView 、编辑文本和按钮创建自定义字体。 在样式中，我将 coloraccent 用作白色。所以在编辑文本的焦点上应该出现白色。请参阅下图了解默认的 edittext 焦点。这很好用。

但每当我创建自定义字体编辑文本时，焦点行为就会不同。 它不显示白色。相反，它以黑色显示。请参阅下图了解我的电子邮件自定义编辑文本行为。

这是我自定义的 edittext 字体类。

public class TypefaceButton extends Button {

    /*
     * Permissible values ​​for the "typeface" attribute.
     */
    private final static int ROBOTO_THIN = 0;
    private final static int ROBOTO_THIN_ITALIC = 1;
    private final static int ROBOTO_LIGHT = 2;
    private final static int ROBOTO_LIGHT_ITALIC = 3;
    private final static int ROBOTO_REGULAR = 4;
    private final static int ROBOTO_ITALIC = 5;
    private final static int ROBOTO_MEDIUM = 6;
    private final static int ROBOTO_MEDIUM_ITALIC = 7;
    private final static int ROBOTO_BOLD = 8;
    private final static int ROBOTO_BOLD_ITALIC = 9;
    private final static int ROBOTO_BLACK = 10;
    private final static int ROBOTO_BLACK_ITALIC = 11;
    private final static int ROBOTO_CONDENSED = 12;
    private final static int ROBOTO_CONDENSED_ITALIC = 13;
    private final static int ROBOTO_CONDENSED_BOLD = 14;
    private final static int ROBOTO_CONDENSED_BOLD_ITALIC = 15;
    /**
     * List of created typefaces for later reused.
     */
    private final static SparseArray<Typeface> mTypefaces = new SparseArray<Typeface>(16);

    /**
     * Simple constructor to use when creating a view from code.
     *
     * @param context The Context the view is running in, through which it can
     *                access the current theme, resources, etc.
     */
    public TypefaceButton(Context context) {
        super(context);
    }

    /**
     * Constructor that is called when inflating a view from XML. This is called
     * when a view is being constructed from an XML file, supplying attributes
     * that were specified in the XML file. This version uses a default style of
     * 0, so the only attribute values applied are those in the Context's Theme
     * and the given AttributeSet.
     * <p/>
     * <p/>
     * The method onFinishInflate() will be called after all children have been
     * added.
     *
     * @param context The Context the view is running in, through which it can
     *                access the current theme, resources, etc.
     * @param attrs   The attributes of the XML tag that is inflating the view.
     * @see #TypefaceButton(android.content.Context, android.util.AttributeSet, int)
     */
    public TypefaceButton(Context context, AttributeSet attrs) {
        super(context, attrs);
        parseAttributes(context, attrs);
    }

    /**
     * Perform inflation from XML and apply a class-specific base style. This
     * constructor of View allows subclasses to use their own base style when
     * they are inflating.
     *
     * @param context  The Context the view is running in, through which it can
     *                 access the current theme, resources, etc.
     * @param attrs    The attributes of the XML tag that is inflating the view.
     * @param defStyle The default style to apply to this view. If 0, no style
     *                 will be applied (beyond what is included in the theme). This may
     *                 either be an attribute resource, whose value will be retrieved
     *                 from the current theme, or an explicit style resource.
     * @see #TypefaceButton(android.content.Context, android.util.AttributeSet)
     */
    public TypefaceButton(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        parseAttributes(context, attrs);
    }

    /**
     * Parse the attributes.
     *
     * @param context The Context the view is running in, through which it can access the current           theme, resources, etc.
     * @param attrs   The attributes of the XML tag that is inflating the view.
     */
    private void parseAttributes(Context context, AttributeSet attrs) {
        TypedArray values = context.obtainStyledAttributes(attrs, R.styleable.TypefaceTextView);

        int typefaceValue = values.getInt(R.styleable.TypefaceTextView_typeface, 0);
        values.recycle();

        setTypeface(obtaintTypeface(context, typefaceValue));
    }

    /**
     * Obtain typeface.
     *
     * @param context       The Context the view is running in, through which it can
     *                      access the current theme, resources, etc.
     * @param typefaceValue values ​​for the "typeface" attribute
     * @return Roboto {@link android.graphics.Typeface}
     * @throws IllegalArgumentException if unknown `typeface` attribute value.
     */
    private Typeface obtaintTypeface(Context context, int typefaceValue) throws IllegalArgumentException {
        Typeface typeface = mTypefaces.get(typefaceValue);
        if (typeface == null) {
            typeface = createTypeface(context, typefaceValue);
            mTypefaces.put(typefaceValue, typeface);
        }
        return typeface;
    }

    /**
     * Create typeface from assets.
     *
     * @param context       The Context the view is running in, through which it can
     *                      access the current theme, resources, etc.
     * @param typefaceValue values ​​for the "typeface" attribute
     * @return Roboto {@link android.graphics.Typeface}
     * @throws IllegalArgumentException if unknown `typeface` attribute value.
     */
    private Typeface createTypeface(Context context, int typefaceValue) throws IllegalArgumentException {
        Typeface typeface;
        switch (typefaceValue) {
            case ROBOTO_THIN:
                typeface = Typeface.createFromAsset(context.getAssets(), "fonts/Roboto-Thin.ttf");
                break;
            case ROBOTO_THIN_ITALIC:
                typeface = Typeface.createFromAsset(context.getAssets(), "fonts/Roboto-ThinItalic.ttf");
                break;
            case ROBOTO_LIGHT:
                typeface = Typeface.createFromAsset(context.getAssets(), "fonts/Roboto-Light.ttf");
                break;
            case ROBOTO_LIGHT_ITALIC:
                typeface = Typeface.createFromAsset(context.getAssets(), "fonts/Roboto-LightItalic.ttf");
                break;
            case ROBOTO_REGULAR:
                typeface = Typeface.createFromAsset(context.getAssets(), "fonts/Roboto-Regular.ttf");
                break;
            case ROBOTO_ITALIC:
                typeface = Typeface.createFromAsset(context.getAssets(), "fonts/Roboto-Italic.ttf");
                break;
            case ROBOTO_MEDIUM:
                typeface = Typeface.createFromAsset(context.getAssets(), "fonts/Roboto-Medium.ttf");
                break;
            case ROBOTO_MEDIUM_ITALIC:
                typeface = Typeface.createFromAsset(context.getAssets(), "fonts/Roboto-MediumItalic.ttf");
                break;
            case ROBOTO_BOLD:
                typeface = Typeface.createFromAsset(context.getAssets(), "fonts/Roboto-Bold.ttf");
                break;
            case ROBOTO_BOLD_ITALIC:
                typeface = Typeface.createFromAsset(context.getAssets(), "fonts/Roboto-BoldItalic.ttf");
                break;
            case ROBOTO_BLACK:
                typeface = Typeface.createFromAsset(context.getAssets(), "fonts/Roboto-Black.ttf");
                break;
            case ROBOTO_BLACK_ITALIC:
                typeface = Typeface.createFromAsset(context.getAssets(), "fonts/Roboto-BlackItalic.ttf");
                break;
            case ROBOTO_CONDENSED:
                typeface = Typeface.createFromAsset(context.getAssets(), "fonts/Roboto-Condensed.ttf");
                break;
            case ROBOTO_CONDENSED_ITALIC:
                typeface = Typeface.createFromAsset(context.getAssets(), "fonts/Roboto-CondensedItalic.ttf");
                break;
            case ROBOTO_CONDENSED_BOLD:
                typeface = Typeface.createFromAsset(context.getAssets(), "fonts/Roboto-BoldCondensed.ttf");
                break;
            case ROBOTO_CONDENSED_BOLD_ITALIC:
                typeface = Typeface.createFromAsset(context.getAssets(), "fonts/Roboto-BoldCondensedItalic.ttf");
                break;
            default:
                throw new IllegalArgumentException("Unknown `typeface` attribute value " + typefaceValue);
        }
        return typeface;
    }

}

我在 xml 中使用自定义字体，如下所示。

<appname.utilities.TypefaceEditText
        android:id="@+id/editText2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:layout_margin="@dimen/ten_dp"
        custom:typeface="roboto_light"
        android:ems="10"
        android:hint="@string/user_email"
        android:inputType="textEmailAddress"
        android:textColor="@color/material_grey200"
        android:textColorHint="@color/material_grey200" />

我该如何解决这个问题!任何的想法？我知道我可以在 java 类文件中实现自定义字体。但是我想以这种方式实现。在我自己的自定义编辑文本中，我也想显示相同的强调色。在此先致谢!

Answer 1

我找到了!要应用 colorAccent，只需扩展您的自定义 EditText 类android.support.v7.widget.AppCompatEditText