你把選擇與展開(kāi)混淆了。
1樓回答正解！

  render() {
    return (
      <div>
        <Tree
          multiple={true}
          expandedKeys={this.state.expandKey || []}// （受控）展開(kāi)指定的樹節(jié)點(diǎn)
          selectedKeys={this.state.checkedKey || []}// （受控）設(shè)置選中的樹節(jié)點(diǎn)
          onSelect={this.onSelect}// 點(diǎn)擊樹節(jié)點(diǎn)觸發(fā)
          onExpand={this.onExpands}// 展開(kāi)/收起節(jié)點(diǎn)時(shí)觸發(fā)
        >
          <TreeNode title="parent 1" key="0-0">
            <TreeNode title="parent 1-0" key="0-0-0">
              <TreeNode title="leaf" key="0-0-0-0" />
              <TreeNode title="leaf" key="0-0-0-1" />
            </TreeNode>
            <TreeNode title="parent 1-1" key="0-0-1">
              <TreeNode title="sss" key="0-0-1-0" />
            </TreeNode>
          </TreeNode>
        </Tree>
        <button onClick={this.checkedKeys}>給復(fù)選框值</button>
      </div>
    );
  }
  checkedKeys = () => {
    this.setState({ expandKey: ['0-0-0','0-0-0-1','0-0-1-0'],checkedKey: ['0-0-0','0-0-0-1','0-0-1-0'] });
  }
  onSelect = (onSelect, info) => {
    this.setState({ checkedKey: onSelect });
  }
  onExpands = (onExpands, info) => {
    this.setState({ expandKey: onExpands });
  }

 onExpands = (selectedKeys, info) => {
    this.setState({ checkedKey: selectedKeys });
  }

這里寫錯(cuò)了，checkedKey和expandKey用兩個(gè)變量來(lái)存，他們是兩個(gè)東西