TextDrawable

This light-weight library provides images with letter/text like the Gmail app. It extends the Drawable class thus can be used with existing/custom/network ImageView classes. Also included is a fluent interface for creating drawables and a customizable ColorGenerator.

How to use

Import with Gradle:

repositories{
    maven {
        url 'http://dl.bintray.com/amulyakhare/maven'
    }
}

dependencies {
    compile 'com.amulyakhare:com.amulyakhare.textdrawable:1.0.1'
}

1. Create simple tile:

<ImageView android:layout_width="60dp"
	       android:layout_height="60dp"
	       android:id="@+id/image_view"/>
XML

Note: Specify width/height for the ImageView and the drawable will auto-scale to fit the size.

TextDrawable drawable = TextDrawable.builder()
                .buildRect("A", Color.RED);

ImageView image = (ImageView) findViewById(R.id.image_view);
image.setImageDrawable(drawable);
Java

2. Create rounded corner or circular tiles:

TextDrawable drawable1 = TextDrawable.builder()
                .buildRoundRect("A", Color.RED, 10); // radius in px

TextDrawable drawable2 = TextDrawable.builder()
                .buildRound("A", Color.RED);
Java

3. Add border:

TextDrawable drawable = TextDrawable.builder()
                .beginConfig()
                    .withBorder(4) /* thickness in px */
                .endConfig()
                .buildRoundRect("A", Color.RED, 10);
Java

4. Modify font style:

TextDrawable drawable = TextDrawable.builder()
                .beginConfig()
	                .textColor(Color.BLACK)
                    .useFont(Typeface.DEFAULT)
                    .fontSize(30) /* size in px */
                    .bold()
                    .toUpperCase()
                .endConfig()
                .buildRect("a", Color.RED)
Java

5. Built-in color generator:

ColorGenerator generator = ColorGenerator.MATERIAL; // or use DEFAULT
// generate random color
int color1 = generator.getRandomColor();
// generate color based on a key (same key returns the same color), useful for list/grid views
int color2 = generator.getColor("user@gmail.com")

// declare the builder object once.
TextDrawable.IBuilder builder = TextDrawable.builder()
				.beginConfig()
					.withBorder(4)
				.endConfig()
				.rect();

// reuse the builder specs to create multiple drawables
TextDrawable ic1 = builder.build("A", color1);
TextDrawable ic2 = builder.build("B", color2);
Java

6. Specify the width / height:

<ImageView android:layout_width="wrap_content"
	       android:layout_height="wrap_content"
	       android:id="@+id/image_view"/>
XML

Note: The ImageView could use wrap_content width/height. You could set the width/height of the drawable using code.

TextDrawable drawable = TextDrawable.builder()
				.beginConfig()
					.width(60)  // width in px
					.height(60) // height in px
				.endConfig()
                .buildRect("A", Color.RED);

ImageView image = (ImageView) findViewById(R.id.image_view);
image.setImageDrawable(drawable);
Java

GitHub