diff --git a/SmartRefreshControl.js b/SmartRefreshControl.js
index 9fbdc44..accbe29 100644
--- a/SmartRefreshControl.js
+++ b/SmartRefreshControl.js
@@ -48,7 +48,7 @@ class SmartRefreshControl extends Component {
 
         return findNodeHandle(this.refs.refreshLayout);
     }
-    componentWillMount() {
+    componentDidMount() {
         this._panResponder = PanResponder.create({
             onMoveShouldSetPanResponderCapture: (evt, gestureState) => {
                 if(this.shiftPercent >= 0.039 || this.footerShiftPercent >= 0.068){//满足条件捕获事件
@@ -127,7 +127,7 @@ class SmartRefreshControl extends Component {
             <SmartRefreshLayout
                 ref="refreshLayout"
                 {...nativeProps}
-                {...this._panResponder.panHandlers}
+                {...this._panResponder?.panHandlers}
             >
                 {this.renderHeader()}
                 {this.props.children}
@@ -169,4 +169,4 @@ SmartRefreshControl.propTypes = {
 SmartRefreshControl.defaultProps={
     overScrollBounce:false
 }
-export default SmartRefreshControl;
\ No newline at end of file
+export default SmartRefreshControl;
diff --git a/index.d.ts b/index.d.ts
index dee1987..d68f974 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -1,4 +1,4 @@
-import react, { Component } from "react"
+import React, { Component } from "react"
 import {ViewProps} from "react-native";
 interface SmartRefreshLayoutProps extends ViewProps{
     onRefresh?:()=>void,