Demonstrating how to tile a (Vector) Drawable

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  Copyright 2017 Google Inc.

  Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
  in compliance with the License. You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software distributed under the License
  is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
  or implied. See the License for the specific language governing permissions and limitations under
  the License.
  -->

<ImageView
    android:id="@+id/image"
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:scaleType="fitXY"
    tools:context="com.example.tiledrawable.MainActivity" />

MainActivity.kt

/*
 *  Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the
 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the specific language governing
 * permissions and limitations under the License.
 */

package com.example.tiledrawable

import android.graphics.Shader
import android.support.v7.app.AppCompatActivity
import android.os.Bundle
import android.support.v4.content.ContextCompat
import android.view.View
import android.widget.ImageView

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        val iv = findViewById<ImageView>(R.id.image)
        val d = ContextCompat.getDrawable(this, R.drawable.pattern)
        iv.setImageDrawable(TileDrawable(d, Shader.TileMode.REPEAT))

        iv.systemUiVisibility = View.SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR or
                View.SYSTEM_UI_FLAG_LAYOUT_STABLE or
                View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN or
                View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
    }
}

pattern.png

pattern.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  Copyright 2017 Google Inc.

  Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
  in compliance with the License. You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software distributed under the License
  is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
  or implied. See the License for the specific language governing permissions and limitations under
  the License.
  -->

<vector
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="94dp"
    android:height="59dp"
    android:viewportWidth="946"
    android:viewportHeight="589">
    <path
        android:pathData="M 0 0 L 946 0 L 946 589 L 0 589 Z"
        android:fillColor="#393939"/>
    <path
        android:pathData="M 106.555 106.429 L 99.144 131.937 C 96.651 140.518 101.123 145.089 109.748 142.778 L 137.299 135.396 C 145.925 133.084 147.54 126.846 141.118 120.623 L 122.194 102.287 C 115.74 96.033 109.062 97.801 106.555 106.429 Z M 102.714 105.313 C 106.062 93.79 116.359 91.063 124.978 99.414 L 143.902 117.75 C 152.555 126.134 149.963 136.143 138.334 139.259 L 110.784 146.642 C 99.147 149.76 91.941 142.394 95.303 130.821 L 102.714 105.313 Z"
        android:fillColor="#000000"/>
    <path
        android:pathData="M 302.454 208.945 L 279.177 221.741 C 271.346 226.046 271.276 232.441 279.009 236.905 L 303.71 251.166 C 311.445 255.632 316.998 252.362 316.857 243.421 L 316.441 217.074 C 316.299 208.088 310.327 204.616 302.454 208.945 Z M 300.527 205.439 C 311.043 199.659 320.251 205.012 320.44 217.011 L 320.856 243.358 C 321.047 255.405 312.137 260.65 301.71 254.631 L 277.009 240.369 C 266.576 234.346 266.689 224.042 277.25 218.236 L 300.527 205.439 Z"
        android:fillColor="#000000"/>
    <path
        android:pathData="M 829.454 478.945 L 806.177 491.741 C 798.346 496.046 798.276 502.441 806.009 506.905 L 830.71 521.166 C 838.445 525.632 843.998 522.362 843.857 513.421 L 843.441 487.074 C 843.299 478.088 837.327 474.616 829.454 478.945 Z M 827.527 475.439 C 838.043 469.659 847.251 475.012 847.44 487.011 L 847.856 513.358 C 848.047 525.405 839.137 530.65 828.71 524.631 L 804.009 510.369 C 793.576 504.346 793.689 494.042 804.25 488.236 L 827.527 475.439 Z"
        android:fillColor="#000000"/>
    <path
        android:pathData="M 290.562 50.939 L 279.039 57.029 C 275.786 58.748 275.745 60.885 278.926 62.721 L 291.832 70.172 C 295.015 72.01 296.873 70.899 296.755 67.227 L 296.339 54.285 C 296.218 50.525 293.895 49.177 290.562 50.939 Z M 288.693 47.403 C 294.64 44.26 300.121 47.44 300.337 54.157 L 300.753 67.098 C 300.972 73.907 295.73 77.042 289.832 73.637 L 276.926 66.185 C 271.019 62.775 271.137 56.681 277.17 53.493 L 288.693 47.403 Z"
        android:fillColor="#000000"/>
    <path
        android:pathData="M 264.039 501.029 C 260.786 502.748 260.745 504.885 263.926 506.721 L 276.832 514.172 C 280.015 516.01 281.873 514.899 281.755 511.227 L 281.339 498.286 C 281.218 494.525 278.895 493.177 275.562 494.939 L 264.039 501.029 Z M 285.337 498.157 L 285.753 511.098 C 285.972 517.907 280.73 521.042 274.832 517.637 L 261.926 510.185 C 256.019 506.775 256.137 500.681 262.17 497.493 L 273.693 491.403 C 279.64 488.26 285.121 491.44 285.337 498.157 Z"
        android:fillColor="#000000"/>
    <path
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        android:fillColor="#000000"/>
    <path
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        android:fillColor="#000000"/>
    <path
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        android:fillColor="#000000"/>
    <path
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        android:fillColor="#000000"/>
    <path
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        android:fillColor="#000000"/>
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        android:fillColor="#000000"/>
    <path
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    <path
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TileDrawable.kt

/*
 *  Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the
 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the specific language governing
 * permissions and limitations under the License.
 */

package com.example.tiledrawable

import android.graphics.Bitmap
import android.graphics.BitmapShader
import android.graphics.Canvas
import android.graphics.ColorFilter
import android.graphics.Paint
import android.graphics.PixelFormat
import android.graphics.Shader
import android.graphics.drawable.BitmapDrawable
import android.graphics.drawable.Drawable

class TileDrawable(drawable: Drawable, tileMode: Shader.TileMode) : Drawable() {

    private val paint: Paint

    init {
        paint = Paint().apply {
            shader = BitmapShader(getBitmap(drawable), tileMode, tileMode)
        }
    }

    override fun draw(canvas: Canvas) {
        canvas.drawPaint(paint)
    }

    override fun setAlpha(alpha: Int) {
        paint.alpha = alpha
    }

    override fun getOpacity() = PixelFormat.TRANSLUCENT

    override fun setColorFilter(colorFilter: ColorFilter?) {
        paint.colorFilter = colorFilter
    }

    private fun getBitmap(drawable: Drawable): Bitmap {
        if (drawable is BitmapDrawable) {
            return drawable.bitmap
        }
        val bmp = Bitmap.createBitmap(drawable.intrinsicWidth, drawable.intrinsicHeight,
                Bitmap.Config.ARGB_8888)
        val c = Canvas(bmp)
        drawable.setBounds(0, 0, drawable.intrinsicWidth, drawable.intrinsicHeight)
        drawable.draw(c)
        return bmp
    }

}