constructor() {
    super(...arguments)
    this.state = {
      selected: 0
    }
  }

  handleSelectBtn() {
    let mark = !this.state.selected
    this.setState(() => {
      return {
        selected: mark
      };
    });
  }

<View
  onClick={this.handleSelectBtn}
  className={`radio ${this.state.selected ? "active" : null}`}
></View>



  .radio {
        width: 32px;
        height: 32px;
        border-radius: 50%;
        overflow: hidden;
        background: white;
        border: 2px solid rgba(3, 118, 232, 1); &.active:after {
          content: '✔';
          font-size: 24px;
          color: rgba(3, 118, 232, 1);
          display: flex;
          justify-content: center;
          align-content: center;
          line-height: 34px;
        }
      }