An Android library that allows you to build text layouts more easily.
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Summary: 1.5.0 is next

Reviewed By: sjkirby

Differential Revision: D8575587

fbshipit-source-id: 91668b882d33f5436176cfeca18719e6549a1a16
Latest commit a0330ea Jun 22, 2018

README.md

TextLayoutBuilder

Build text Layouts easily on Android.

Features

  • Create text Layouts easily.
  • Reuse builders to create similarly styled Layouts.
  • Cache Layouts of commonly used strings.
  • Improve performance by warming up the FreeType cache.

Download

If using Gradle, add this to your build.gradle:

compile 'com.facebook.fbui.textlayoutbuilder:textlayoutbuilder:1.4.0'

or, if using Maven:

<dependency>
  <groupId>com.facebook.fbui.textlayoutbuilder</groupId>
  <artifactId>textlayoutbuilder</artifactId>
  <version>1.3.1</version>
  <type>aar</type>
</dependency>

Usage

  1. Set the properties on the TextLayoutBuilder:
TextLayoutBuilder builder = new TextLayoutBuilder()
    .setText("TextLayoutBuilder makes life easy")
    .setTextColor(Color.BLUE)
    .setWidth(400 /*, MEASURE_MODE_EXACTLY */);
  1. Call build() on the builder to get a Layout:
Layout layout = builder.build();
  1. Use the Layout in your code:
public class CustomView extends View {
    private Layout layout;

    public CustomView(Context context) {
        super(context);
    }

    public void setLayout(Layout layout) {
        this.layout = layout;
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);

        // Draw the layout.
        layout.draw(canvas);
    }
}

Additional Usage

  1. Cache the layouts for commonly used strings by turning on caching in the TextLayoutBuilder.
textLayoutBuilder.setShouldCacheLayout(true);
  1. Glyph warming provides significant performance boost for large blurbs of text. Turn this on and pass in a GlyphWarmer for the TextLayoutBuilder.
textLayoutBuilder
    .setShouldWarmText(true)
    .setGlyphWarmer(new GlyphWarmerImpl());
  1. Import a style defined in XML into a TextLayoutBuilder object.
ResourceTextLayoutHelper.updateFromStyleResource(
    textLayoutBuilder, // builder object
    context,           // Activity context
    resId);            // style resource id

License

TextLayoutBuilder is Apache-2-licensed.