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diff --git a/java/com/android/dialer/theme/base/ThemeUtil.java b/java/com/android/dialer/theme/base/ThemeUtil.java
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+++ b/java/com/android/dialer/theme/base/ThemeUtil.java
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+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * 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.android.dialer.theme.base;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.support.annotation.ColorInt;
+import android.support.annotation.IntDef;
+import android.support.annotation.StyleRes;
+import android.view.ContextThemeWrapper;
+import android.view.LayoutInflater;
+import com.android.dialer.common.Assert;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+/** Utility for fetching */
+@SuppressWarnings("unused")
+public class ThemeUtil {
+
+  /** IntDef for the different themes Dialer supports. */
+  @Retention(RetentionPolicy.SOURCE)
+  @IntDef({UNKNOWN, LIGHT, DARK})
+  public @interface Theme {}
+
+  public static final int UNKNOWN = 0;
+  public static final int LIGHT = 1;
+  public static final int DARK = 2;
+
+  private static @Theme int theme = UNKNOWN;
+
+  private static int colorIcon = -1;
+  private static int colorIconSecondary = -1;
+  private static int colorPrimary = -1;
+  private static int colorPrimaryDark = -1;
+  private static int colorAccent = -1;
+  private static int textColorPrimary = -1;
+  private static int textColorSecondary = -1;
+  private static int textColorPrimaryInverse = -1;
+  private static int textColorHint = -1;
+  private static int colorBackground = -1;
+  private static int colorBackgroundFloating = -1;
+  private static int colorTextOnUnthemedDarkBackground = -1;
+  private static int colorIconOnUnthemedDarkBackground = -1;
+
+  public static void initializeTheme(Context context) {
+    // TODO(a bug): add share prefs check to configure this
+    theme = LIGHT;
+
+    context = context.getApplicationContext();
+    context.setTheme(getApplicationThemeRes());
+    TypedArray array =
+        context
+            .getTheme()
+            .obtainStyledAttributes(
+                getApplicationThemeRes(),
+                new int[] {
+                  android.R.attr.colorPrimary,
+                  android.R.attr.colorPrimaryDark,
+                  android.R.attr.colorAccent,
+                  android.R.attr.textColorPrimary,
+                  android.R.attr.textColorSecondary,
+                  android.R.attr.textColorPrimaryInverse,
+                  android.R.attr.textColorHint,
+                  android.R.attr.colorBackground,
+                  android.R.attr.colorBackgroundFloating,
+                  R.attr.colorIcon,
+                  R.attr.colorIconSecondary,
+                  R.attr.colorTextOnUnthemedDarkBackground,
+                  R.attr.colorIconOnUnthemedDarkBackground,
+                });
+    colorPrimary = array.getColor(/* index= */ 0, /* defValue= */ -1);
+    colorPrimaryDark = array.getColor(/* index= */ 1, /* defValue= */ -1);
+    colorAccent = array.getColor(/* index= */ 2, /* defValue= */ -1);
+    textColorPrimary = array.getColor(/* index= */ 3, /* defValue= */ -1);
+    textColorSecondary = array.getColor(/* index= */ 4, /* defValue= */ -1);
+    textColorPrimaryInverse = array.getColor(/* index= */ 5, /* defValue= */ -1);
+    textColorHint = array.getColor(/* index= */ 6, /* defValue= */ -1);
+    colorBackground = array.getColor(/* index= */ 7, /* defValue= */ -1);
+    colorBackgroundFloating = array.getColor(/* index= */ 8, /* defValue= */ -1);
+    colorIcon = array.getColor(/* index= */ 9, /* defValue= */ -1);
+    colorIconSecondary = array.getColor(/* index= */ 10, /* defValue= */ -1);
+    colorTextOnUnthemedDarkBackground = array.getColor(/* index= */ 11, /* defValue= */ -1);
+    colorIconOnUnthemedDarkBackground = array.getColor(/* index= */ 12, /* defValue= */ -1);
+    array.recycle();
+  }
+
+  /**
+   * Returns the {@link Theme} that the application is using. Activities should check this value if
+   * their custom style needs to customize further based on the application theme.
+   */
+  public static @Theme int getTheme() {
+    Assert.checkArgument(theme != UNKNOWN);
+    return theme;
+  }
+
+  public static @StyleRes int getApplicationThemeRes() {
+    switch (theme) {
+      case DARK:
+        return R.style.Dialer_Dark_ThemeBase_NoActionBar;
+      case LIGHT:
+        return R.style.Dialer_ThemeBase_NoActionBar;
+      case UNKNOWN:
+      default:
+        throw Assert.createIllegalStateFailException("Theme hasn't been set yet.");
+    }
+  }
+
+  public static Context getThemedContext(Context context) {
+    return new ContextThemeWrapper(context, getApplicationThemeRes());
+  }
+
+  public static LayoutInflater getThemedLayoutInflator(LayoutInflater inflater) {
+    return inflater.cloneInContext(getThemedContext(inflater.getContext()));
+  }
+
+  public static @ColorInt int getColorIcon() {
+    Assert.checkArgument(colorIcon != -1);
+    return colorIcon;
+  }
+
+  public static @ColorInt int getColorIconSecondary() {
+    Assert.checkArgument(colorIconSecondary != -1);
+    return colorIconSecondary;
+  }
+
+  public static @ColorInt int getColorPrimary() {
+    Assert.checkArgument(colorPrimary != -1);
+    return colorPrimary;
+  }
+
+  public static @ColorInt int getColorAccent() {
+    Assert.checkArgument(colorAccent != -1);
+    return colorAccent;
+  }
+
+  public static @ColorInt int getTextColorSecondary() {
+    Assert.checkArgument(textColorSecondary != -1);
+    return textColorSecondary;
+  }
+
+  public static @ColorInt int getTextColorPrimary() {
+    Assert.checkArgument(textColorPrimary != -1);
+    return textColorPrimary;
+  }
+
+  public static @ColorInt int getColorTextOnUnthemedDarkBackground() {
+    Assert.checkArgument(colorTextOnUnthemedDarkBackground != -1);
+    return colorTextOnUnthemedDarkBackground;
+  }
+
+  public static @ColorInt int getColorIconOnUnthemedDarkBackground() {
+    Assert.checkArgument(colorIconOnUnthemedDarkBackground != -1);
+    return colorIconOnUnthemedDarkBackground;
+  }
+}