因此，我正在学习react native中的平面列表，并尝试编写一个函数，通过在按钮中使用onlongpress删除平面列表中的项目，这是终端中显示的项目示例：

Array [
  Object {
    "Friday": false,
    "Monday": true,
    "Saturday": false,
    "Sunday": false,
    "Thursday": false,
    "Tuesday": false,
    "Wednesday": false,
    "key": 0.08631781113770953,
    "workoutName": "",
  },
]

这是我正在使用的函数，我根据教程得到：

removeItem(item){
    this.setState({
       workoutList: this.state.workoutList.filter((item)=>item.key !== item.key)
    });
}

这就是我调用函数的地方：

openTwoButtonAlert = () => {
    Alert.alert(
       'Delete Workout',
      'Are you sure to delete this Workout?',
      [
        {text: 'Delete', onPress: this.removeItem(item)},

        {text: 'Cancel', 
           style: 'cancel',

        },
      ],
    );
  }

这是我的舞蹈家：

<FlatList
              data={this.state.workoutList}
              keyExtractor={(item, index) => item.key.toString()}
              renderItem={(data) => (
                <View style={{padding:20}}>
                  <TouchableOpacity onPress={() => this.props.navigation.navigate("WorkoutCreated", {
                    workoutName: data.item.workoutName,
                    Monday: data.item.Monday,
                    Tuesday: data.item.Tuesday,
                    Wednesday: data.item.Wednesday,
                    Thursday: data.item.Thursday,
                    Friday: data.item.Friday,
                    Saturday: data.item.Saturday,
                    Sunday: data.item.Sunday,
                  })} 
                  onLongPress={this.openTwoButtonAlert()}>
                    <Text>{data.item.workoutName}</Text>       
                  </TouchableOpacity>
                </View>
              )}
            />

要更新的状态是workoutlist，我正在使用一个类组件，当我启动代码时，它返回错误： TypeError: undefined is not an object (evaluating 'this.setState') 提前感谢你的帮助。