刚开始我是这样写的 

let arrs= this.state.receive.splice(i,1);
this.setState({
   receive:arrs
});

 结果是有四组数据，点击删除，只剩下一组数据。

修改之后，就可以点一个删除一个

 const arrs= this.state.receive;
 arrs.splice(i,1);
 this.setState({
    receive:arrs
 });