Typeface.CustomFallbackBuilder Class

Reference

Definition

Namespace:: Android.Graphics

Assembly:: Mono.Android.dll

Important

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A builder class for creating new Typeface instance.

[Android.Runtime.Register("android/graphics/Typeface$CustomFallbackBuilder", ApiSince=29, DoNotGenerateAcw=true)]
public sealed class Typeface.CustomFallbackBuilder : Java.Lang.Object

[<Android.Runtime.Register("android/graphics/Typeface$CustomFallbackBuilder", ApiSince=29, DoNotGenerateAcw=true)>]
type Typeface.CustomFallbackBuilder = class
    inherit Object

Inheritance: Object

Object
Typeface.CustomFallbackBuilder

Attributes: RegisterAttribute

Remarks

A builder class for creating new Typeface instance.

There are two font fallback mechanisms, custom font fallback and system font fallback. The custom font fallback is a simple ordered list. The text renderer tries to see if it can render a character with the first font and if that font does not support the character, try next one and so on. It will keep trying until end of the custom fallback chain. The maximum length of the custom fallback chain is 64. The system font fallback is a system pre-defined fallback chain. The system fallback is processed only when no matching font is found in the custom font fallback.

Examples, 1) Create Typeface from single ttf file.

<code>
            Font font = new Font.Builder("your_font_file.ttf").build();
            FontFamily family = new FontFamily.Builder(font).build();
            Typeface typeface = new Typeface.CustomFallbackBuilder(family).build();
</code>

2) Create Typeface from multiple font files and select bold style by default.

<code>
            Font regularFont = new Font.Builder("regular.ttf").build();
            Font boldFont = new Font.Builder("bold.ttf").build();
            FontFamily family = new FontFamily.Builder(regularFont)
                .addFont(boldFont).build();
            Typeface typeface = new Typeface.CustomFallbackBuilder(family)
                .setWeight(Font.FONT_WEIGHT_BOLD)  // Set bold style as the default style.
                                                   // If the font family doesn't have bold style font,
                                                   // system will select the closest font.
                .build();
</code>

3) Create Typeface from single ttf file and if that font does not have glyph for the characters, use "serif" font family instead.

<code>
            Font font = new Font.Builder("your_font_file.ttf").build();
            FontFamily family = new FontFamily.Builder(font).build();
            Typeface typeface = new Typeface.CustomFallbackBuilder(family)
                .setSystemFallback("serif")  // Set serif font family as the fallback.
                .build();
</code>

4) Create Typeface from single ttf file and set another ttf file for the fallback.

<code>
            Font font = new Font.Builder("English.ttf").build();
            FontFamily family = new FontFamily.Builder(font).build();

            Font fallbackFont = new Font.Builder("Arabic.ttf").build();
            FontFamily fallbackFamily = new FontFamily.Builder(fallbackFont).build();
            Typeface typeface = new Typeface.CustomFallbackBuilder(family)
                .addCustomFallback(fallbackFamily)  // Specify fallback family.
                .setSystemFallback("serif")  // Set serif font family as the fallback.
                .build();
</code>

</p>

Java documentation for android.graphics.Typeface.CustomFallbackBuilder.

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

Constructors

Typeface.CustomFallbackBuilder(FontFamily)

Constructs a builder with a font family.

Properties

Class	Returns the runtime class of this `Object`. (Inherited from Object)
Handle	The handle to the underlying Android instance. (Inherited from Object)
JniIdentityHashCode	(Inherited from Object)
JniPeerMembers
MaxCustomFallbackCount	Returns the maximum capacity of custom fallback families.
PeerReference	(Inherited from Object)
ThresholdClass	This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. (Inherited from Object)
ThresholdType	This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. (Inherited from Object)

Methods

AddCustomFallback(FontFamily)
Build()	Create the Typeface based on the configured values.
Clone()	Creates and returns a copy of this object. (Inherited from Object)
Dispose()	(Inherited from Object)
Dispose(Boolean)	(Inherited from Object)
Equals(Object)	Indicates whether some other object is "equal to" this one. (Inherited from Object)
GetHashCode()	Returns a hash code value for the object. (Inherited from Object)
JavaFinalize()	Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. (Inherited from Object)
Notify()	Wakes up a single thread that is waiting on this object's monitor. (Inherited from Object)
NotifyAll()	Wakes up all threads that are waiting on this object's monitor. (Inherited from Object)
SetHandle(IntPtr, JniHandleOwnership)	Sets the Handle property. (Inherited from Object)
SetStyle(FontStyle)
SetSystemFallback(String)
ToArray<T>()	(Inherited from Object)
ToString()	Returns a string representation of the object. (Inherited from Object)
UnregisterFromRuntime()	(Inherited from Object)
Wait()	Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>. (Inherited from Object)
Wait(Int64, Int32)	Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object)
Wait(Int64)	Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object)

Explicit Interface Implementations

IJavaPeerable.Disposed()	(Inherited from Object)
IJavaPeerable.DisposeUnlessReferenced()	(Inherited from Object)
IJavaPeerable.Finalized()	(Inherited from Object)
IJavaPeerable.JniManagedPeerState	(Inherited from Object)
IJavaPeerable.SetJniIdentityHashCode(Int32)	(Inherited from Object)
IJavaPeerable.SetJniManagedPeerState(JniManagedPeerStates)	(Inherited from Object)
IJavaPeerable.SetPeerReference(JniObjectReference)	(Inherited from Object)

Extension Methods

JavaCast<TResult>(IJavaObject)	Performs an Android runtime-checked type conversion.
JavaCast<TResult>(IJavaObject)
GetJniTypeName(IJavaPeerable)

Applies to

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