MaterialTextDrawable-for-android

This light-weight library provides drawable with letter/text just like the Gmail/Contacts app. It can be used with existing/custom/network ImageView classes.

Compatibility

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MaterialTextDrawable requires Android Jellybean (API level 16) or higher.

How to

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To add this library in your project follow these steps:

• Step 1. Add the JitPack repository to your root build.gradle file.

  allprojects {
    repositories {
      ...
      maven { url 'https://jitpack.io' }
    }
  }

• Step 2. Add the following dependency to your module build.gradle file.

  dependencies {
    implementation 'com.github.adwardstark:materialtextdrawable-for-android:{latest_version}'
  }

Quick usage

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Simple use cases will look something like this:

    MaterialTextDrawable.with(context)
        .text("Hello")
        .into(imageView)

Usage with other libraries

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You can use this library with any other image-loading library like Glide or Picasso in one easy step, first define an object of MaterialTextDrawable like this:

    val textDrawable = MaterialTextDrawable.with(context)
        .text("Hello")
        .get()

and then use this textDrawable object with the image-loading-library.

Glide Example

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    Glide.with(context)
        .load("https://some_url")
        .placeholder(textDrawable)
        .into(imageView)

Configuration

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You can configure the look/shape/size of the text-drawable generated by MaterialTextDrawable using following configuration methods:

• with(context: Context): Used to create the MaterialTextDrawable instance by passing the Activity or Fragment context.

• text(text: String): This method is used to generate the initial character of the text-drawable, the text has to be passed using this method before calling the get() or into() methods else a NullPointerException will be thrown.

• textSize(size: Int): Define the height and width of the text-drawable, by default it uses a size of 150. Example textSize(200) means 200x200.

• shape(shape: MaterialShape): Define the shape of drawable using the MaterialShape enum, by default it uses MaterialShape.CIRCLE which returns a circular text-drawable.

• colorMode(mode: MaterialColorMode): Sets a random-color on drawable using the MaterialColorMode enum, by default it uses MaterialColorMode.MEDIUM for random-color.

• get(): Returns a BitmapDrawable generated by the builder which can then be used to set the drawable on an ImageView.

• into(view: ImageView): Apply the text-drawable to an ImageView directly, no need to call get() when using this method. This method needs to be called on the MainThread else an IllegalArgumentException will be thrown.

• into(view: ImageView, scale: ImageView.ScaleType): Apply the text-drawable to an ImageView directly along with scaling option of the ImageView class, no need to call get() when using this method. This method needs to be called on the MainThread else an IllegalArgumentException will be thrown.

Enums

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Following are the enums provided by the library:

• MaterialShape

  CIRCLE
  RECTANGLE

• MaterialColorMode

  LIGHT     // Material 900
  MEDIUM    // Material 700
  DARK      // Material 400

Thanks

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• AmosKorir for the AvatarImageGenerator implementation MaterialTextDrawable's foundation is based on.
• Everyone who has contributed or will contribute code and report/reported issues!

License

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Apache 2.0. See the LICENSE file for details.