Added progressColor(), progressColorRes(), and progressColorAttr() to the Builder, along with a md_progress_color global theme attribute.

README.md

@@ -507,6 +507,13 @@ or operating system. This behavior can be overridden in your Activity themes:
     -->
     <item name="md_negative_color">#673AB7</item>
 
+    <!--
+        By default, a progress dialog's progress indicator color is derived
+        from the colorAccent attribute of AppCompat or android:colorAccent
+        attribute of the Material theme.
+    -->
+    <item name="md_progress_color">#673AB7</item>
+
     <!--
         By default, the list item text color is black for the light
         theme and white for the dark theme.
@@ -671,6 +678,14 @@ dialog.setContent(getString(R.string.done));
 
 See the sample project for this dialog in action, with the addition of threading.
 
+##### Coloring
+
+Like action buttons and many other elements of the Material dialog, you can customize the color of a 
+ progress dialog's progress indicator. The `Builder` class contains a `progressColor()`, `progressColorRes()`,
+ and `progressColorAttr()` method. Their names and parameter annotations make them self explanatory.
+ 
+There's also a global theming attribute as shown in the Global Theming section of this README: `md_progress_color`.
+
 ---
 
 ### Preference Dialogs

library/src/main/java/com/afollestad/materialdialogs/DialogInit.java

@@ -83,6 +83,7 @@ class DialogInit {
         builder.positiveColor = DialogUtils.resolveColor(builder.context, R.attr.md_positive_color, builder.positiveColor);
         builder.neutralColor = DialogUtils.resolveColor(builder.context, R.attr.md_neutral_color, builder.neutralColor);
         builder.negativeColor = DialogUtils.resolveColor(builder.context, R.attr.md_negative_color, builder.negativeColor);
+        builder.progressColor = DialogUtils.resolveColor(builder.context, R.attr.md_progress_color, builder.progressColor);
 
         // Retrieve references to views
         dialog.title = (TextView) dialog.view.findViewById(R.id.title);
@@ -303,18 +304,16 @@ class DialogInit {
         if (builder.mIndeterminateProgress || builder.mProgress > -2) {
             dialog.mProgress = (ProgressBar) dialog.view.findViewById(android.R.id.progress);
 
-            // Manually color progress bar on pre-Lollipop, since Material/AppCompat themes only do it on API 21+
-            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
-                Drawable indDraw = dialog.mProgress.getIndeterminateDrawable();
-                if (indDraw != null) {
-                    indDraw.setColorFilter(builder.accentColor, PorterDuff.Mode.SRC_ATOP);
-                    dialog.mProgress.setIndeterminateDrawable(indDraw);
-                }
-                Drawable regDraw = dialog.mProgress.getProgressDrawable();
-                if (regDraw != null) {
-                    regDraw.setColorFilter(builder.accentColor, PorterDuff.Mode.SRC_ATOP);
-                    dialog.mProgress.setProgressDrawable(regDraw);
-                }
+            // Color the progress bar
+            Drawable indDraw = dialog.mProgress.getIndeterminateDrawable();
+            if (indDraw != null) {
+                indDraw.setColorFilter(builder.progressColor, PorterDuff.Mode.SRC_ATOP);
+                dialog.mProgress.setIndeterminateDrawable(indDraw);
+            }
+            Drawable regDraw = dialog.mProgress.getProgressDrawable();
+            if (regDraw != null) {
+                regDraw.setColorFilter(builder.progressColor, PorterDuff.Mode.SRC_ATOP);
+                dialog.mProgress.setProgressDrawable(regDraw);
             }
 
             if (!builder.mIndeterminateProgress) {

library/src/main/java/com/afollestad/materialdialogs/MaterialDialog.java

@@ -820,7 +820,7 @@ public class MaterialDialog extends DialogBase implements
         protected CharSequence neutralText;
         protected CharSequence negativeText;
         protected View customView;
-        protected int accentColor;
+        protected int progressColor;
         protected int positiveColor;
         protected int negativeColor;
         protected int neutralColor;
@@ -878,30 +878,30 @@ public class MaterialDialog extends DialogBase implements
         public Builder(@NonNull Context context) {
             this.context = context;
             final int materialBlue = context.getResources().getColor(R.color.md_material_blue_600);
+            boolean useAppCompat = true;
             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                 TypedArray a = context.getTheme().obtainStyledAttributes(new int[]{android.R.attr.colorAccent});
                 try {
-                    this.accentColor = a.getColor(0, materialBlue);
-                    this.positiveColor = this.accentColor;
-                    this.negativeColor = this.accentColor;
-                    this.neutralColor = this.accentColor;
+                    this.progressColor = a.getColor(0, materialBlue);
+                    this.positiveColor = this.progressColor;
+                    this.negativeColor = this.progressColor;
+                    this.neutralColor = this.progressColor;
+                    useAppCompat = false;
                 } catch (Exception e) {
-                    this.accentColor = materialBlue;
-                    this.positiveColor = materialBlue;
-                    this.negativeColor = materialBlue;
-                    this.neutralColor = materialBlue;
+                    e.printStackTrace();
                 } finally {
                     a.recycle();
                 }
-            } else {
+            }
+            if (useAppCompat) {
                 TypedArray a = context.getTheme().obtainStyledAttributes(new int[]{R.attr.colorAccent});
                 try {
-                    this.accentColor = a.getColor(0, materialBlue);
-                    this.positiveColor = this.accentColor;
-                    this.negativeColor = this.accentColor;
-                    this.neutralColor = this.accentColor;
+                    this.progressColor = a.getColor(0, materialBlue);
+                    this.positiveColor = this.progressColor;
+                    this.negativeColor = this.progressColor;
+                    this.neutralColor = this.progressColor;
                 } catch (Exception e) {
-                    this.accentColor = materialBlue;
+                    this.progressColor = materialBlue;
                     this.positiveColor = materialBlue;
                     this.negativeColor = materialBlue;
                     this.neutralColor = materialBlue;
@@ -950,6 +950,8 @@ public class MaterialDialog extends DialogBase implements
                 this.btnSelectorNeutral = s.btnSelectorNeutral;
             if (s.btnSelectorNegative != 0)
                 this.btnSelectorNegative = s.btnSelectorNegative;
+            if (s.progressColor != 0)
+                this.progressColor = s.progressColor;
             this.titleGravity = s.titleGravity;
             this.contentGravity = s.contentGravity;
             this.btnStackedGravity = s.btnStackedGravity;
@@ -1284,19 +1286,30 @@ public class MaterialDialog extends DialogBase implements
             return progress(indeterminate, max);
         }
 
+        public Builder progressColor(int color) {
+            this.progressColor = color;
+            return this;
+        }
+
+        public Builder progressColorRes(@ColorRes int colorRes) {
+            return progressColor(this.context.getResources().getColor(colorRes));
+        }
+
+        public Builder progressColorAttr(@AttrRes int colorAttr) {
+            return progressColorRes(DialogUtils.resolveColor(this.context, colorAttr));
+        }
+
         public Builder positiveColor(int color) {
             this.positiveColor = color;
             return this;
         }
 
         public Builder positiveColorRes(@ColorRes int colorRes) {
-            positiveColor(this.context.getResources().getColor(colorRes));
-            return this;
+            return positiveColor(this.context.getResources().getColor(colorRes));
         }
 
         public Builder positiveColorAttr(@AttrRes int colorAttr) {
-            positiveColor(DialogUtils.resolveColor(this.context, colorAttr));
-            return this;
+            return positiveColor(DialogUtils.resolveColor(this.context, colorAttr));
         }
 
         public Builder negativeColor(int color) {
@@ -1305,13 +1318,11 @@ public class MaterialDialog extends DialogBase implements
         }
 
         public Builder negativeColorRes(@ColorRes int colorRes) {
-            negativeColor(this.context.getResources().getColor(colorRes));
-            return this;
+            return negativeColor(this.context.getResources().getColor(colorRes));
         }
 
         public Builder negativeColorAttr(@AttrRes int colorAttr) {
-            negativeColor(DialogUtils.resolveColor(this.context, colorAttr));
-            return this;
+            return negativeColor(DialogUtils.resolveColor(this.context, colorAttr));
         }
 
         public Builder neutralColor(int color) {

library/src/main/java/com/afollestad/materialdialogs/ThemeSingleton.java

@@ -26,6 +26,7 @@ public class ThemeSingleton {
     public int positiveColor = 0;
     public int neutralColor = 0;
     public int negativeColor = 0;
+    public int progressColor = 0;
     public int itemColor = 0;
     public Drawable icon = null;
     public int backgroundColor = 0;
@@ -47,4 +48,4 @@ public class ThemeSingleton {
     public GravityEnum btnStackedGravity = GravityEnum.START;
     public GravityEnum itemsGravity = GravityEnum.START;
     public GravityEnum buttonsGravity = GravityEnum.START;
-}
+}

library/src/main/res/values/attrs.xml

@@ -18,6 +18,7 @@
     <attr name="md_positive_color" format="color" />
     <attr name="md_neutral_color" format="color" />
     <attr name="md_negative_color" format="color" />
+    <attr name="md_progress_color" format="color" />
 
     <attr name="md_item_color" format="color" />
     <attr name="md_divider_color" format="color" />

sample/src/main/java/com/afollestad/materialdialogssample/MainActivity.java

@@ -489,6 +489,7 @@ public class MainActivity extends ActionBarActivity implements
         ThemeSingleton.get().positiveColor = color;
         ThemeSingleton.get().neutralColor = color;
         ThemeSingleton.get().negativeColor = color;
+        ThemeSingleton.get().progressColor = color;
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
             getWindow().setStatusBarColor(darker);
     }