native 拨打电话

没几句话，也记录一下吧！

import {
  Linking,
} from 'react-native'

handlerLinkCall() {
      let url = "tel://10086"
      Linking.canOpenURL(url).then(supported => {
        if (!supported) {
          console.log('请先打开拨号权限');
        } else {
          return Linking.openURL(url);
        }
      }).catch(err => console.error('An error occurred', err));
}