diff --git a/demo/src/main/res/layout/activity_tag_editor.xml b/demo/src/main/res/layout/activity_tag_editor.xml
index a767685..6749944 100644
--- a/demo/src/main/res/layout/activity_tag_editor.xml
+++ b/demo/src/main/res/layout/activity_tag_editor.xml
@@ -14,5 +14,5 @@
     <me.gujun.android.taggroup.TagGroup
         android:id="@+id/tag_group"
         style="@style/TagGroup"
-        app:isAppendMode="true"/>
+        app:atg_isAppendMode="true"/>
 </LinearLayout>
\ No newline at end of file
diff --git a/library/src/main/java/me/gujun/android/taggroup/TagGroup.java b/library/src/main/java/me/gujun/android/taggroup/TagGroup.java
index 29e4a64..5f2ae99 100644
--- a/library/src/main/java/me/gujun/android/taggroup/TagGroup.java
+++ b/library/src/main/java/me/gujun/android/taggroup/TagGroup.java
@@ -154,25 +154,25 @@ public TagGroup(Context context, AttributeSet attrs, int defStyleAttr) {
         // Load styled attributes.
         final TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.TagGroup, defStyleAttr, R.style.TagGroup);
         try {
-            isAppendMode = a.getBoolean(R.styleable.TagGroup_isAppendMode, false);
-            inputHint = a.getText(R.styleable.TagGroup_inputHint);
-            borderColor = a.getColor(R.styleable.TagGroup_borderColor, default_border_color);
-            textColor = a.getColor(R.styleable.TagGroup_textColor, default_text_color);
-            backgroundColor = a.getColor(R.styleable.TagGroup_backgroundColor, default_background_color);
-            dashBorderColor = a.getColor(R.styleable.TagGroup_dashBorderColor, default_dash_border_color);
-            inputHintColor = a.getColor(R.styleable.TagGroup_inputHintColor, default_input_hint_color);
-            inputTextColor = a.getColor(R.styleable.TagGroup_inputTextColor, default_input_text_color);
-            checkedBorderColor = a.getColor(R.styleable.TagGroup_checkedBorderColor, default_checked_border_color);
-            checkedTextColor = a.getColor(R.styleable.TagGroup_checkedTextColor, default_checked_text_color);
-            checkedMarkerColor = a.getColor(R.styleable.TagGroup_checkedMarkerColor, default_checked_marker_color);
-            checkedBackgroundColor = a.getColor(R.styleable.TagGroup_checkedBackgroundColor, default_checked_background_color);
-            pressedBackgroundColor = a.getColor(R.styleable.TagGroup_pressedBackgroundColor, default_pressed_background_color);
-            borderStrokeWidth = a.getDimension(R.styleable.TagGroup_borderStrokeWidth, default_border_stroke_width);
-            textSize = a.getDimension(R.styleable.TagGroup_textSize, default_text_size);
-            horizontalSpacing = (int) a.getDimension(R.styleable.TagGroup_horizontalSpacing, default_horizontal_spacing);
-            verticalSpacing = (int) a.getDimension(R.styleable.TagGroup_verticalSpacing, default_vertical_spacing);
-            horizontalPadding = (int) a.getDimension(R.styleable.TagGroup_horizontalPadding, default_horizontal_padding);
-            verticalPadding = (int) a.getDimension(R.styleable.TagGroup_verticalPadding, default_vertical_padding);
+            isAppendMode = a.getBoolean(R.styleable.TagGroup_atg_isAppendMode, false);
+            inputHint = a.getText(R.styleable.TagGroup_atg_inputHint);
+            borderColor = a.getColor(R.styleable.TagGroup_atg_borderColor, default_border_color);
+            textColor = a.getColor(R.styleable.TagGroup_atg_textColor, default_text_color);
+            backgroundColor = a.getColor(R.styleable.TagGroup_atg_backgroundColor, default_background_color);
+            dashBorderColor = a.getColor(R.styleable.TagGroup_atg_dashBorderColor, default_dash_border_color);
+            inputHintColor = a.getColor(R.styleable.TagGroup_atg_inputHintColor, default_input_hint_color);
+            inputTextColor = a.getColor(R.styleable.TagGroup_atg_inputTextColor, default_input_text_color);
+            checkedBorderColor = a.getColor(R.styleable.TagGroup_atg_checkedBorderColor, default_checked_border_color);
+            checkedTextColor = a.getColor(R.styleable.TagGroup_atg_checkedTextColor, default_checked_text_color);
+            checkedMarkerColor = a.getColor(R.styleable.TagGroup_atg_checkedMarkerColor, default_checked_marker_color);
+            checkedBackgroundColor = a.getColor(R.styleable.TagGroup_atg_checkedBackgroundColor, default_checked_background_color);
+            pressedBackgroundColor = a.getColor(R.styleable.TagGroup_atg_pressedBackgroundColor, default_pressed_background_color);
+            borderStrokeWidth = a.getDimension(R.styleable.TagGroup_atg_borderStrokeWidth, default_border_stroke_width);
+            textSize = a.getDimension(R.styleable.TagGroup_atg_textSize, default_text_size);
+            horizontalSpacing = (int) a.getDimension(R.styleable.TagGroup_atg_horizontalSpacing, default_horizontal_spacing);
+            verticalSpacing = (int) a.getDimension(R.styleable.TagGroup_atg_verticalSpacing, default_vertical_spacing);
+            horizontalPadding = (int) a.getDimension(R.styleable.TagGroup_atg_horizontalPadding, default_horizontal_padding);
+            verticalPadding = (int) a.getDimension(R.styleable.TagGroup_atg_verticalPadding, default_vertical_padding);
         } finally {
             a.recycle();
         }
diff --git a/library/src/main/res/values/attrs.xml b/library/src/main/res/values/attrs.xml
index 3cfea7e..3cf9b16 100644
--- a/library/src/main/res/values/attrs.xml
+++ b/library/src/main/res/values/attrs.xml
@@ -1,45 +1,45 @@
 <resources>
     <declare-styleable name="TagGroup">
         <!-- Whether the tag group is in append mode. -->
-        <attr name="isAppendMode" format="boolean" />
+        <attr name="atg_isAppendMode" format="boolean" />
         <!-- If the tag group is in append mode, what the hint of input tag. -->
-        <attr name="inputHint" format="string" />
+        <attr name="atg_inputHint" format="string" />
 
         <!-- The tag view outline border color. -->
-        <attr name="borderColor" format="color" />
+        <attr name="atg_borderColor" format="color" />
         <!-- The tag view text color. -->
-        <attr name="textColor" format="color" />
+        <attr name="atg_textColor" format="color" />
         <!-- The tag view background color. -->
-        <attr name="backgroundColor" format="color" />
+        <attr name="atg_backgroundColor" format="color" />
 
         <!-- The dash outline border color, when in append mode. -->
-        <attr name="dashBorderColor" format="color" />
+        <attr name="atg_dashBorderColor" format="color" />
         <!-- The input tag hint text color, when in append mode. -->
-        <attr name="inputHintColor" format="color" />
+        <attr name="atg_inputHintColor" format="color" />
         <!-- The input tag type text color, when in append mode. -->
-        <attr name="inputTextColor" format="color" />
+        <attr name="atg_inputTextColor" format="color" />
 
         <!-- The checked tag view outline border color. -->
-        <attr name="checkedBorderColor" format="color" />
+        <attr name="atg_checkedBorderColor" format="color" />
         <!-- The checked text color. -->
-        <attr name="checkedTextColor" format="color" />
+        <attr name="atg_checkedTextColor" format="color" />
         <!-- The checked marker color. -->
-        <attr name="checkedMarkerColor" format="color" />
+        <attr name="atg_checkedMarkerColor" format="color" />
         <!-- The checked tag view background color. -->
-        <attr name="checkedBackgroundColor" format="color" />
+        <attr name="atg_checkedBackgroundColor" format="color" />
 
         <!-- The tag view background color, when the tag view is being pressed. -->
-        <attr name="pressedBackgroundColor" format="color" />
+        <attr name="atg_pressedBackgroundColor" format="color" />
 
         <!-- The tag view outline border stroke width. -->
-        <attr name="borderStrokeWidth" format="dimension" />
+        <attr name="atg_borderStrokeWidth" format="dimension" />
         <!-- The tag view text size. -->
-        <attr name="textSize" format="dimension" />
+        <attr name="atg_textSize" format="dimension" />
 
-        <attr name="horizontalSpacing" format="dimension" />
-        <attr name="verticalSpacing" format="dimension" />
-        <attr name="horizontalPadding" format="dimension" />
-        <attr name="verticalPadding" format="dimension" />
+        <attr name="atg_horizontalSpacing" format="dimension" />
+        <attr name="atg_verticalSpacing" format="dimension" />
+        <attr name="atg_horizontalPadding" format="dimension" />
+        <attr name="atg_verticalPadding" format="dimension" />
     </declare-styleable>
 
     <declare-styleable name="Themes">
diff --git a/library/src/main/res/values/styles.xml b/library/src/main/res/values/styles.xml
index 1095b7c..416e530 100644
--- a/library/src/main/res/values/styles.xml
+++ b/library/src/main/res/values/styles.xml
@@ -4,61 +4,61 @@
     <style name="TagGroup">
         <item name="android:layout_width">match_parent</item>
         <item name="android:layout_height">wrap_content</item>
-        <item name="isAppendMode">false</item>
-        <item name="inputHint">@string/add_tag</item>
-        <item name="borderColor">#49C120</item>
-        <item name="textColor">#49C120</item>
-        <item name="backgroundColor">#FFFFFF</item>
-        <item name="dashBorderColor">#AAAAAA</item>
-        <item name="inputHintColor">#80000000</item>
-        <item name="inputTextColor">#DE000000</item>
-        <item name="checkedBorderColor">#49C120</item>
-        <item name="checkedTextColor">#FFFFFF</item>
-        <item name="checkedMarkerColor">#FFFFFF</item>
-        <item name="checkedBackgroundColor">#49C120</item>
-        <item name="pressedBackgroundColor">#EDEDED</item>
-        <item name="borderStrokeWidth">0.5dp</item>
-        <item name="textSize">13sp</item>
-        <item name="horizontalSpacing">8dp</item>
-        <item name="verticalSpacing">4dp</item>
-        <item name="horizontalPadding">12dp</item>
-        <item name="verticalPadding">3dp</item>
+        <item name="atg_isAppendMode">false</item>
+        <item name="atg_inputHint">@string/add_tag</item>
+        <item name="atg_borderColor">#49C120</item>
+        <item name="atg_textColor">#49C120</item>
+        <item name="atg_backgroundColor">#FFFFFF</item>
+        <item name="atg_dashBorderColor">#AAAAAA</item>
+        <item name="atg_inputHintColor">#80000000</item>
+        <item name="atg_inputTextColor">#DE000000</item>
+        <item name="atg_checkedBorderColor">#49C120</item>
+        <item name="atg_checkedTextColor">#FFFFFF</item>
+        <item name="atg_checkedMarkerColor">#FFFFFF</item>
+        <item name="atg_checkedBackgroundColor">#49C120</item>
+        <item name="atg_pressedBackgroundColor">#EDEDED</item>
+        <item name="atg_borderStrokeWidth">0.5dp</item>
+        <item name="atg_textSize">13sp</item>
+        <item name="atg_horizontalSpacing">8dp</item>
+        <item name="atg_verticalSpacing">4dp</item>
+        <item name="atg_horizontalPadding">12dp</item>
+        <item name="atg_verticalPadding">3dp</item>
     </style>
 
     <style name="TagGroup.Small" parent="TagGroup">
-        <item name="textSize">10sp</item>
-        <item name="horizontalSpacing">6dp</item>
-        <item name="verticalSpacing">3dp</item>
-        <item name="horizontalPadding">8dp</item>
-        <item name="verticalPadding">2dp</item>
+        <item name="atg_textSize">10sp</item>
+        <item name="atg_horizontalSpacing">6dp</item>
+        <item name="atg_verticalSpacing">3dp</item>
+        <item name="atg_horizontalPadding">8dp</item>
+        <item name="atg_verticalPadding">2dp</item>
     </style>
 
     <style name="TagGroup.Large" parent="TagGroup">
-        <item name="borderStrokeWidth">0.7dp</item>
-        <item name="textSize">15sp</item>
-        <item name="horizontalSpacing">9dp</item>
-        <item name="verticalSpacing">5dp</item>
-        <item name="horizontalPadding">14dp</item>
-        <item name="verticalPadding">4dp</item>
+        <item name="atg_borderStrokeWidth">0.7dp</item>
+        <item name="atg_textSize">15sp</item>
+        <item name="atg_horizontalSpacing">9dp</item>
+        <item name="atg_verticalSpacing">5dp</item>
+        <item name="atg_horizontalPadding">14dp</item>
+        <item name="atg_verticalPadding">4dp</item>
     </style>
 
     <style name="TagGroup.Beauty_Red" parent="TagGroup">
-        <item name="borderColor">#FF3D7F</item>
-        <item name="textColor">#FF3D7F</item>
-        <item name="checkedBorderColor">#FF3D7F</item>
-        <item name="checkedBackgroundColor">#FF3D7F</item>
+        <item name="atg_borderColor">#FF3D7F</item>
+        <item name="atg_textColor">#FF3D7F</item>
+        <item name="atg_checkedBorderColor">#FF3D7F</item>
+        <item name="atg_checkedBackgroundColor">#FF3D7F</item>
     </style>
 
     <style name="TagGroup.Beauty_Red.Inverse" parent="TagGroup">
-        <item name="borderColor">#FF3D7F</item>
-        <item name="textColor">#FFFFFF</item>
-        <item name="backgroundColor">#FF3D7F</item>
-        <item name="inputHintColor">#80FFFFFF</item>
-        <item name="inputTextColor">#DEFFFFFF</item>
-        <item name="checkedBorderColor">#FF3D7F</item>
-        <item name="checkedTextColor">#FF3D7F</item>
-        <item name="checkedMarkerColor">#FF3D7F</item>
-        <item name="checkedBackgroundColor">#FFFFFF</item>
-        <item name="pressedBackgroundColor">#FF99B1</item>
+        <item name="atg_borderColor">#FF3D7F</item>
+        <item name="atg_textColor">#FFFFFF</item>
+        <item name="atg_backgroundColor">#FF3D7F</item>
+        <item name="atg_inputHintColor">#80FFFFFF</item>
+        <item name="atg_inputTextColor">#DEFFFFFF</item>
+        <item name="atg_checkedBorderColor">#FF3D7F</item>
+        <item name="atg_checkedTextColor">#FF3D7F</item>
+        <item name="atg_checkedMarkerColor">#FF3D7F</item>
+        <item name="atg_checkedBackgroundColor">#FFFFFF</item>
+        <item name="atg_pressedBackgroundColor">#FF99B1</item>
     </style>
 </resources>
\ No newline at end of file