can't build android version

[kingctan]

 leaveTimer(action = 0: string) {   <======error here.
    if (action === 'more') {
      this.setState({stateControls: this.state.stateControls + 1});
    } else if (action === 'less') {
      this.setState({stateControls: this.state.stateControls - 1});
    }
    if (this.state.stateControls == -1 && !this.state.controlsWillUnmount) {
      this.onPress();
      this.setState({stateControls: 0});
    }
  }