diff --git a/FDFullscreenPopGesture/UINavigationController+FDFullscreenPopGesture.h b/FDFullscreenPopGesture/UINavigationController+FDFullscreenPopGesture.h
index 1be8de7..cd39b4e 100644
--- a/FDFullscreenPopGesture/UINavigationController+FDFullscreenPopGesture.h
+++ b/FDFullscreenPopGesture/UINavigationController+FDFullscreenPopGesture.h
@@ -39,6 +39,10 @@
 /// Default to YES, disable it if you don't want so.
 @property (nonatomic, assign) BOOL fd_viewControllerBasedNavigationBarAppearanceEnabled;
 
+/// Max allowed initial distance to left edge when you begin the interactive pop
+/// gesture. 0 by default, which means it will ignore this limit.
+@property (nonatomic, assign) CGFloat fd_interactivePopMaxAllowedInitialDistanceToLeftEdge;
+
 @end
 
 /// Allows any view controller to disable interactive pop gesture, which might
@@ -55,8 +59,4 @@
 /// Default to NO, bars are more likely to show.
 @property (nonatomic, assign) BOOL fd_prefersNavigationBarHidden;
 
-/// Max allowed initial distance to left edge when you begin the interactive pop
-/// gesture. 0 by default, which means it will ignore this limit.
-@property (nonatomic, assign) CGFloat fd_interactivePopMaxAllowedInitialDistanceToLeftEdge;
-
 @end
diff --git a/FDFullscreenPopGesture/UINavigationController+FDFullscreenPopGesture.m b/FDFullscreenPopGesture/UINavigationController+FDFullscreenPopGesture.m
index 914f217..d59a4d6 100644
--- a/FDFullscreenPopGesture/UINavigationController+FDFullscreenPopGesture.m
+++ b/FDFullscreenPopGesture/UINavigationController+FDFullscreenPopGesture.m
@@ -46,7 +46,7 @@ - (BOOL)gestureRecognizerShouldBegin:(UIPanGestureRecognizer *)gestureRecognizer
     
     // Ignore when the beginning location is beyond max allowed initial distance to left edge.
     CGPoint beginningLocation = [gestureRecognizer locationInView:gestureRecognizer.view];
-    CGFloat maxAllowedInitialDistance = topViewController.fd_interactivePopMaxAllowedInitialDistanceToLeftEdge;
+    CGFloat maxAllowedInitialDistance = self.navigationController.fd_interactivePopMaxAllowedInitialDistanceToLeftEdge;
     if (maxAllowedInitialDistance > 0 && beginningLocation.x > maxAllowedInitialDistance) {
         return NO;
     }
@@ -237,6 +237,21 @@ - (void)setFd_viewControllerBasedNavigationBarAppearanceEnabled:(BOOL)enabled
     objc_setAssociatedObject(self, key, @(enabled), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
 }
 
+
+- (CGFloat)fd_interactivePopMaxAllowedInitialDistanceToLeftEdge
+{
+#if CGFLOAT_IS_DOUBLE
+    return [objc_getAssociatedObject(self, _cmd) doubleValue];
+#else
+    return [objc_getAssociatedObject(self, _cmd) floatValue];
+#endif
+}
+
+- (void)setFd_interactivePopMaxAllowedInitialDistanceToLeftEdge:(CGFloat)distance
+{
+    SEL key = @selector(fd_interactivePopMaxAllowedInitialDistanceToLeftEdge);
+    objc_setAssociatedObject(self, key, @(MAX(0, distance)), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
 @end
 
 @implementation UIViewController (FDFullscreenPopGesture)
@@ -262,19 +277,4 @@ - (void)setFd_prefersNavigationBarHidden:(BOOL)hidden
 }
 
 
-- (CGFloat)fd_interactivePopMaxAllowedInitialDistanceToLeftEdge
-{
-#if CGFLOAT_IS_DOUBLE
-    return [objc_getAssociatedObject(self, _cmd) doubleValue];
-#else
-    return [objc_getAssociatedObject(self, _cmd) floatValue];
-#endif
-}
-
-- (void)setFd_interactivePopMaxAllowedInitialDistanceToLeftEdge:(CGFloat)distance
-{
-    SEL key = @selector(fd_interactivePopMaxAllowedInitialDistanceToLeftEdge);
-    objc_setAssociatedObject(self, key, @(MAX(0, distance)), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
-}
-
 @end
diff --git a/FDFullscreenPopGestureDemo/FDFullscreenPopGestureDemo/Base.lproj/Main.storyboard b/FDFullscreenPopGestureDemo/FDFullscreenPopGestureDemo/Base.lproj/Main.storyboard
index 017c7a7..b7fda7d 100644
--- a/FDFullscreenPopGestureDemo/FDFullscreenPopGestureDemo/Base.lproj/Main.storyboard
+++ b/FDFullscreenPopGestureDemo/FDFullscreenPopGestureDemo/Base.lproj/Main.storyboard
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="7702" systemVersion="14D136" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" initialViewController="igB-ae-A6d">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="9531" systemVersion="15D21" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" initialViewController="igB-ae-A6d">
     <dependencies>
         <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="7701"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="9529"/>
         <capability name="Constraints with non-1.0 multipliers" minToolsVersion="5.1"/>
     </dependencies>
     <scenes>
@@ -11,18 +11,21 @@
             <objects>
                 <tableViewController id="Yil-vo-4gg" sceneMemberID="viewController">
                     <tableView key="view" clipsSubviews="YES" contentMode="scaleToFill" alwaysBounceVertical="YES" dataMode="static" style="plain" separatorStyle="default" rowHeight="44" sectionHeaderHeight="22" sectionFooterHeight="22" id="vaB-3Z-F8E">
-                        <rect key="frame" x="0.0" y="64" width="320" height="568"/>
+                        <rect key="frame" x="0.0" y="0.0" width="320" height="568"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                         <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
                         <sections>
                             <tableViewSection id="zLC-j9-mLJ">
                                 <cells>
                                     <tableViewCell contentMode="scaleToFill" selectionStyle="default" accessoryType="disclosureIndicator" indentationWidth="10" textLabel="zYM-EQ-Hz3" style="IBUITableViewCellStyleDefault" id="Z6n-oR-iV2">
+                                        <rect key="frame" x="0.0" y="64" width="320" height="44"/>
                                         <autoresizingMask key="autoresizingMask"/>
                                         <tableViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" tableViewCell="Z6n-oR-iV2" id="Tco-xM-mHZ">
+                                            <rect key="frame" x="0.0" y="0.0" width="287" height="43"/>
                                             <autoresizingMask key="autoresizingMask"/>
                                             <subviews>
                                                 <label opaque="NO" multipleTouchEnabled="YES" contentMode="left" text="Push a view controller with bar" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" id="zYM-EQ-Hz3">
+                                                    <rect key="frame" x="15" y="0.0" width="270" height="43"/>
                                                     <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
                                                     <fontDescription key="fontDescription" type="system" pointSize="16"/>
                                                     <color key="textColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="calibratedRGB"/>
@@ -35,11 +38,14 @@
                                         </connections>
                                     </tableViewCell>
                                     <tableViewCell contentMode="scaleToFill" selectionStyle="default" accessoryType="disclosureIndicator" indentationWidth="10" textLabel="xd7-rd-MzF" style="IBUITableViewCellStyleDefault" id="XKC-qi-pHD">
+                                        <rect key="frame" x="0.0" y="108" width="320" height="44"/>
                                         <autoresizingMask key="autoresizingMask"/>
                                         <tableViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" tableViewCell="XKC-qi-pHD" id="aZC-f1-pSy">
+                                            <rect key="frame" x="0.0" y="0.0" width="287" height="43"/>
                                             <autoresizingMask key="autoresizingMask"/>
                                             <subviews>
                                                 <label opaque="NO" multipleTouchEnabled="YES" contentMode="left" text="Push a view controller without bar" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" id="xd7-rd-MzF">
+                                                    <rect key="frame" x="15" y="0.0" width="270" height="43"/>
                                                     <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
                                                     <fontDescription key="fontDescription" type="system" pointSize="16"/>
                                                     <color key="textColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="calibratedRGB"/>
@@ -78,7 +84,7 @@
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                         <subviews>
                             <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="7YL-k9-gxt">
-                                <rect key="frame" x="141" y="186" width="39" height="30"/>
+                                <rect key="frame" x="141" y="174" width="39" height="30"/>
                                 <state key="normal" title="Push ">
                                     <color key="titleShadowColor" white="0.5" alpha="1" colorSpace="calibratedWhite"/>
                                 </state>
@@ -87,13 +93,13 @@
                                 </connections>
                             </button>
                             <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="This view controller's navigation bar is hidden and max allowed pop gesture initial distance is 200" textAlignment="center" lineBreakMode="tailTruncation" numberOfLines="0" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="oMP-QY-pLJ">
-                                <rect key="frame" x="25" y="236" width="270" height="96"/>
+                                <rect key="frame" x="25" y="224" width="270" height="120"/>
                                 <fontDescription key="fontDescription" type="boldSystem" pointSize="20"/>
                                 <color key="textColor" white="0.33333333333333331" alpha="1" colorSpace="calibratedWhite"/>
                                 <nil key="highlightedColor"/>
                             </label>
                         </subviews>
-                        <color key="backgroundColor" cocoaTouchSystemColor="groupTableViewBackgroundColor"/>
+                        <color key="backgroundColor" red="0.93725490199999995" green="0.93725490199999995" blue="0.95686274510000002" alpha="1" colorSpace="calibratedRGB"/>
                         <constraints>
                             <constraint firstItem="oMP-QY-pLJ" firstAttribute="leading" secondItem="Rj7-Fg-Utv" secondAttribute="leading" constant="25" id="4E6-vQ-AfN"/>
                             <constraint firstAttribute="trailing" secondItem="oMP-QY-pLJ" secondAttribute="trailing" constant="25" id="8Os-Zq-V09"/>
@@ -107,9 +113,6 @@
                     <nil key="simulatedTopBarMetrics"/>
                     <userDefinedRuntimeAttributes>
                         <userDefinedRuntimeAttribute type="boolean" keyPath="fd_prefersNavigationBarHidden" value="YES"/>
-                        <userDefinedRuntimeAttribute type="number" keyPath="fd_interactivePopMaxAllowedInitialDistanceToLeftEdge">
-                            <integer key="value" value="200"/>
-                        </userDefinedRuntimeAttribute>
                     </userDefinedRuntimeAttributes>
                 </viewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="4yO-BP-M2q" userLabel="First Responder" sceneMemberID="firstResponder"/>
@@ -136,7 +139,7 @@
                                 </constraints>
                             </imageView>
                             <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="百度知道 iOS 招聘搞基工程师
简历请发 sunyuan01@baidu.com" textAlignment="center" lineBreakMode="tailTruncation" numberOfLines="2" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="ebz-S0-NHG" userLabel="Content Label">
-                                <rect key="frame" x="40" y="302" width="241" height="39"/>
+                                <rect key="frame" x="36" y="302" width="249" height="39"/>
                                 <fontDescription key="fontDescription" type="boldSystem" pointSize="16"/>
                                 <color key="textColor" white="0.33333333333333331" alpha="1" colorSpace="calibratedWhite"/>
                                 <nil key="highlightedColor"/>
@@ -166,6 +169,11 @@
                         <autoresizingMask key="autoresizingMask"/>
                     </navigationBar>
                     <nil name="viewControllers"/>
+                    <userDefinedRuntimeAttributes>
+                        <userDefinedRuntimeAttribute type="number" keyPath="fd_interactivePopMaxAllowedInitialDistanceToLeftEdge">
+                            <integer key="value" value="50"/>
+                        </userDefinedRuntimeAttribute>
+                    </userDefinedRuntimeAttributes>
                     <connections>
                         <segue destination="Yil-vo-4gg" kind="relationship" relationship="rootViewController" id="SMW-gw-xCH"/>
                     </connections>
@@ -178,11 +186,6 @@
     <resources>
         <image name="forkingdog" width="128" height="128"/>
     </resources>
-    <simulatedMetricsContainer key="defaultSimulatedMetrics">
-        <simulatedStatusBarMetrics key="statusBar"/>
-        <simulatedOrientationMetrics key="orientation"/>
-        <simulatedScreenMetrics key="destination" type="retina4"/>
-    </simulatedMetricsContainer>
     <inferredMetricsTieBreakers>
         <segue reference="rTt-jg-esi"/>
     </inferredMetricsTieBreakers>
diff --git a/README.md b/README.md
index a890ad2..517b3c9 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,12 @@ To disable this pop gesture of a view controller:
 viewController.fd_interactivePopDisabled = YES;
 ```
 
+To customer the distance to left edge when you begin the interactive pop gesture.you can set a digit in you UINavigationController like this(0 by default,which means it will ignore this limit):  
+
+``` objc
+navigationController.fd_interactivePopMaxAllowedInitialDistanceToLeftEdge = 20;
+```
+
 Require at least iOS **7.0**.
 
 # View Controller Based Navigation Bar Appearance